MALICIOUS — 88e1ef2eb98e9b4a72efecd86f5b631cbfa742fac43da52c85ecaaebb6677205

MALICIOUS — 88e1ef2eb98e9b4a72efecd86f5b631cbfa742fac43da52c85ecaaebb6677205 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: 88e1ef2eb98e9b4a72efecd86f5b631cbfa742fac43da52c85ecaaebb6677205
SHA-1: c4dfad8ecb4411ca72ef69459867b04f5adbba4d
MD5: 827435307a3c7bb3e115a71be887249f
imphash: b6230692891661869cecd581561a21f4
ssdeep: 12288:zW6n3sX4yCFr2ZemYOpSPIsGWeKZl4q7sioXY:zW6ncoyqOp6IsTl/mXY
TLSH: T17E4CBED87AC7CD54E8E97B86E44554BDD68BD12F582D2E8F0392C2386F812F3A472112
Submitted as: 88e1ef2eb98e9b4a72efecd86f5b631cbfa742fac43da52c85ecaaebb6677205
File type: pe · Size: 534749 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 32 external host(s) at runtime (13 HTTP) - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1497.001 - 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)

72073 behavior events · 2 ATT&CK techniques · 26 dropped files.

Dropped files

/opt/CAPEv2/storage/analyses/7670/files/31e40eeb0aef3024709cac7eba188a53c8580a5e5567c7e518dc007a0ae82048 - 31e40eeb0aef3024709cac7eba188a53c8580a5e5567c7e518dc007a0ae82048
/opt/CAPEv2/storage/analyses/7670/files/86c707c4db91b076281ae95ca3dc6dc77892e4acdd437fe2cb8ddca3b91fc752 - 86c707c4db91b076281ae95ca3dc6dc77892e4acdd437fe2cb8ddca3b91fc752
/opt/CAPEv2/storage/analyses/7670/files/05825c5638accf4944964e49b9255cedadec44f7906037f9262c94b7ffb56a31 - 05825c5638accf4944964e49b9255cedadec44f7906037f9262c94b7ffb56a31
/opt/CAPEv2/storage/analyses/7670/files/24cdaa147af93dbb7752cbd726ddc879dc13e8d5cc902815947eca1f227c36f1 - 24cdaa147af93dbb7752cbd726ddc879dc13e8d5cc902815947eca1f227c36f1
/opt/CAPEv2/storage/analyses/7670/files/0536e105a354acf21527d19a9a6751ee1b838c2040dbf18e686ee2828fe1af10 - 0536e105a354acf21527d19a9a6751ee1b838c2040dbf18e686ee2828fe1af10
/opt/CAPEv2/storage/analyses/7670/files/f1f3c5f9d54b5bcfdcc31ac41df753992e6b3fbf5c9611fecf99cd08b08a964e - f1f3c5f9d54b5bcfdcc31ac41df753992e6b3fbf5c9611fecf99cd08b08a964e
/opt/CAPEv2/storage/analyses/7670/files/680774546885d10f770d96144ede5ac0cc0cc6828e54275bc78288ec1001ca8a - 680774546885d10f770d96144ede5ac0cc0cc6828e54275bc78288ec1001ca8a
/opt/CAPEv2/storage/analyses/7670/files/46552538e0de6fa218fe9151e5bb07281ccc1441c5d605f6df44b7af6adf866b - 46552538e0de6fa218fe9151e5bb07281ccc1441c5d605f6df44b7af6adf866b
/opt/CAPEv2/storage/analyses/7670/files/0e1c916aec6baeedccddc41cecdb8814764c79aea086dd71ec6f84559d147613 - 0e1c916aec6baeedccddc41cecdb8814764c79aea086dd71ec6f84559d147613
/opt/CAPEv2/storage/analyses/7670/files/deb208bbb4574bb3f5f4a8e97460d90e63ae39179ff59e626b2d44b062257e74 - deb208bbb4574bb3f5f4a8e97460d90e63ae39179ff59e626b2d44b062257e74
/opt/CAPEv2/storage/analyses/7670/files/5d33a57e8c94a1b50de906503ad0f437317bc83e419d6761f9da49635e68d26c - 5d33a57e8c94a1b50de906503ad0f437317bc83e419d6761f9da49635e68d26c
/opt/CAPEv2/storage/analyses/7670/files/5414b47da153cc86cb5089a7d4f60f81b9fcd7c651778d82ce86a9a19fd82e6a - 5414b47da153cc86cb5089a7d4f60f81b9fcd7c651778d82ce86a9a19fd82e6a
/opt/CAPEv2/storage/analyses/7670/files/1f76bbf667e50767ae8748539a22678e41fa5a592e873d38104de3f6adba2ffe - 1f76bbf667e50767ae8748539a22678e41fa5a592e873d38104de3f6adba2ffe
/opt/CAPEv2/storage/analyses/7670/files/fe39f524bbaf8002b18497e0093d863b3e358dac430d0b0da58114aca7bc1bd7 - fe39f524bbaf8002b18497e0093d863b3e358dac430d0b0da58114aca7bc1bd7
/opt/CAPEv2/storage/analyses/7670/files/768ea0ea4203607575af6faff021f8b4402c39c3c0cfa98fade97742b1d3b164 - 768ea0ea4203607575af6faff021f8b4402c39c3c0cfa98fade97742b1d3b164

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=1786287002&P2=404&P3=2&P4=F06bwdRjZ%2f4DnsBJx8Kn8OBMyQMBTyqKXFw6JsSZ3DLA5Khcqm5haOte2M1LulKSzN70kR8zxhW8EzV1vf%2f%2fqA%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=1786287065&P2=404&P3=2&P4=lSAABjUWM6ZQO3El6stNXXFY5U87lhqggP%2bdH4Whuz4%2bq6FNmWon8KBTWtdiH5cIyUY6ohElJrz8b%2bHaD8P%2bHw%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

20.42.73.26
52.123.252.195
4.230.171.124
4.247.188.224
4.144.132.223
74.178.76.44
20.165.94.54
74.178.76.128
203.26.79.13
51.116.246.106
172.178.240.161
135.233.45.221
20.184.175.18
4.150.223.102
72.153.5.97
52.148.114.188
74.179.71.159
52.110.12.26
52.110.12.44

Registry keys

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

File paths

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

More Fsysna samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report