MALICIOUS — 833818e85f4e680e0e1a2c0d7cc0e60f57a2fb434bc37344858fefa95ab7adba

MALICIOUS — 833818e85f4e680e0e1a2c0d7cc0e60f57a2fb434bc37344858fefa95ab7adba is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Fsysna family. 6 of 52 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

SHA-256: 833818e85f4e680e0e1a2c0d7cc0e60f57a2fb434bc37344858fefa95ab7adba
SHA-1: d2dc57346ba3bccc3797c4e9e6cb1e64c3bc1857
MD5: 509023ab36456b5b4a334949473dcee6
imphash: b6230692891661869cecd581561a21f4
ssdeep: 12288:zW6n3sX4yCFr2ZemYOpSPIsGWeKZl4q7sioX3:zW6ncoyqOp6IsTl/mX3
TLSH: T1ED4CBED87AC7CD54E8E97B86E44554BDD68BD12F582D2E8F0392C2386F812F3A472112
Submitted as: 833818e85f4e680e0e1a2c0d7cc0e60f57a2fb434bc37344858fefa95ab7adba
File type: pe · Size: 534740 bytes
Verdict: malicious (100/100) · Family: Fsysna

Detections (6 of 52 engines)

ClamAV (daily): Win.Worm.Guap-4
YARA: delivr.to detections: DLV_Maldoc_VBA_AutoExec
YARA: MalwareAnalyser community pack: TL_Windows_Persistence_RunKey
Microsoft Defender: Trojan:Win32/Fsysna!pz
Emsisoft (Emergency Kit): Gen:Heur.Spesr.VB.1
Kaspersky (KVRT): Trojan.Win32.Fsysna.gevi

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 12 weighted signals:

ClamAV (daily) flagged Win.Worm.Guap-4 (rule Win.Worm.Guap-4) - engine signal, weight 0.90, confidence 0.95
Microsoft Defender flagged Trojan:Win32/Fsysna!pz (rule Trojan:Win32/Fsysna!pz) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Heur.Spesr.VB.1 (rule Gen:Heur.Spesr.VB.1) - engine signal, weight 0.55, confidence 0.85
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
1 behavioral detection(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
Contacted 33 external host(s) at runtime (14 HTTP) - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1497.001, T1082 - dynamic signal, weight 0.40, confidence 0.75
YARA: delivr.to detections flagged DLV_Maldoc_VBA_AutoExec (rule DLV_Maldoc_VBA_AutoExec) - engine signal, weight 0.35, confidence 0.70
YARA: MalwareAnalyser community pack flagged TL_Windows_Persistence_RunKey (rule TL_Windows_Persistence_RunKey) - engine signal, weight 0.35, confidence 0.70
persist via registry run key (rule persist via registry run key) - capa signal, weight 0.35, confidence 0.60
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90

Dynamic analysis (windows)

74851 behavior events · 2 ATT&CK techniques · 27 dropped files.

Dropped files

/opt/CAPEv2/storage/analyses/7611/files/a3a081a55d3e5bdb81f24ff75442cba01f535b7b08f9b67e45852ff8c9aa9bf5 - a3a081a55d3e5bdb81f24ff75442cba01f535b7b08f9b67e45852ff8c9aa9bf5
/opt/CAPEv2/storage/analyses/7611/files/9696c3108e45100c153f3acd7f0d93f6e0c7684be8cbefc196f5a4c5a8ae0c39 - 9696c3108e45100c153f3acd7f0d93f6e0c7684be8cbefc196f5a4c5a8ae0c39
/opt/CAPEv2/storage/analyses/7611/files/334a3da122bedf838e4f5f8166dec5010c03485eddf176b713778996179e4896 - 334a3da122bedf838e4f5f8166dec5010c03485eddf176b713778996179e4896
/opt/CAPEv2/storage/analyses/7611/files/e5e02d3684d6dbbc404d1c2a87af3600fe71c0c6459234e43bb00aa2119ceac3 - e5e02d3684d6dbbc404d1c2a87af3600fe71c0c6459234e43bb00aa2119ceac3
/opt/CAPEv2/storage/analyses/7611/files/779720b8db0c3adc323430c5bac895aabbe3ad249511a55f80b934bd59a37625 - 779720b8db0c3adc323430c5bac895aabbe3ad249511a55f80b934bd59a37625
/opt/CAPEv2/storage/analyses/7611/files/33489a1de4a3196deec4537831387c3a6c2f81703b6cc4f86f8117c9cd73b3e1 - 33489a1de4a3196deec4537831387c3a6c2f81703b6cc4f86f8117c9cd73b3e1
/opt/CAPEv2/storage/analyses/7611/files/de3dbcd820172e009bf89118d7df86fbc7c657d4a2460d36bced7ec62a3badef - de3dbcd820172e009bf89118d7df86fbc7c657d4a2460d36bced7ec62a3badef
/opt/CAPEv2/storage/analyses/7611/files/1b87b5d78070586e0aca533b615bca51fdf33c16a9ff85736caf5fedadaf7070 - 1b87b5d78070586e0aca533b615bca51fdf33c16a9ff85736caf5fedadaf7070
/opt/CAPEv2/storage/analyses/7611/files/d03cd78e94970c30741a359d2900b214eb67915e780f37b88659e66522e1b1e0 - d03cd78e94970c30741a359d2900b214eb67915e780f37b88659e66522e1b1e0
/opt/CAPEv2/storage/analyses/7611/files/1c797cd03d032cca0f0f215953545a118fac1b5746df152ccdcf1602fc8879da - 1c797cd03d032cca0f0f215953545a118fac1b5746df152ccdcf1602fc8879da
/opt/CAPEv2/storage/analyses/7611/files/7a12adcee496c306f9be37b4013a99c3eb7997c5ffa497bfdf441ce3b9e51fc7 - 7a12adcee496c306f9be37b4013a99c3eb7997c5ffa497bfdf441ce3b9e51fc7
/opt/CAPEv2/storage/analyses/7611/files/50d4f52199f0aec0c94475c0c27fb186d60265dd280aeac92f7c04ba0308fea7 - 50d4f52199f0aec0c94475c0c27fb186d60265dd280aeac92f7c04ba0308fea7
/opt/CAPEv2/storage/analyses/7611/files/d8a7bb469b288235d4c0aa8746f48911186e6d90996dd3fecd8dee22362b7766 - d8a7bb469b288235d4c0aa8746f48911186e6d90996dd3fecd8dee22362b7766
/opt/CAPEv2/storage/analyses/7611/files/f90f6ae6c1c972d8c0261531507007b4c494e84adba30f8ffe1a5ebcb3a00964 - f90f6ae6c1c972d8c0261531507007b4c494e84adba30f8ffe1a5ebcb3a00964
/opt/CAPEv2/storage/analyses/7611/files/0b61de6b089c147cfa1f8450ba80fd5c978fcda36535f4a6a7ce58991137352d - 0b61de6b089c147cfa1f8450ba80fd5c978fcda36535f4a6a7ce58991137352d

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://203.26.79.13/filestreamingservice//files/736bdc20-582e-46c5-ba31-d31d3d97258e/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice/files/736bdc20-582e-46c5-ba31-d31d3d97258e?P1=1786282243&P2=404&P3=2&P4=CiTyu6RgDljC5PTKiEZUnk82crAqknWKsJRSNnwoDDzq%2bVMvvccD9%2fFCidLpjtYg6eB%2bQFxCeAQM%2bJlWkfoJRQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice//files/c48ae315-f580-4b6c-801e-58a0f885749d/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice/files/c48ae315-f580-4b6c-801e-58a0f885749d?P1=1786282298&P2=404&P3=2&P4=KnsGhgRhn61X0187EEk%2f42HOiKSOCGvo1dnSvqhjPntkQzVOVlYESAC554zzET5uM%2fiWOh%2f1riciJ3ZGC%2f4jPQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded domains

server.com
tsymantec.com
tsecurityresponse.symantec.com
tsarc.com
twww.sarc.com
twww.sophos.com
tsophos.com
twww.mcafee.com
tmcafee.com
tliveupdate.symantecliveupdate.com
twww.viruslist.com
tviruslist.com
tf-secure.com
twww.f-secure.com
tf-prot.com
twww.f-prot.com
tkaspersky.com
tkaspersky-labs.com
twww.avp.com
tavp.com
twww.kaspersky.com
twww.networkassociates.com
tnetworkassociates.com
twww.ca.com
tca.com

Embedded IP addresses

85.210.196.11
52.168.117.168
4.230.171.124
20.247.185.124
40.84.85.40
74.178.240.51
74.179.77.204
135.232.92.34
203.26.79.13
135.234.160.245
92.223.78.30
72.153.5.139
52.110.12.18
52.110.12.46
52.148.114.188
57.154.63.210
13.89.179.15
20.50.201.205
52.110.12.2
52.110.12.25

Registry keys

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

File paths

C:\Program
C:\WINDOWS\system32\drivers\etc\hosts

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report