MALICIOUS — 4ac6ed587c585ad493c53681ad0fb1e52819af136b30c307fdf512e8a6092dfd

MALICIOUS — 4ac6ed587c585ad493c53681ad0fb1e52819af136b30c307fdf512e8a6092dfd 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: 4ac6ed587c585ad493c53681ad0fb1e52819af136b30c307fdf512e8a6092dfd
SHA-1: ab8639e65feaa0f2ac189f5a42473ebb54573252
MD5: 943a9370cddf8db210c6bc04bb2d851c
imphash: b6230692891661869cecd581561a21f4
ssdeep: 12288:zW6n3sX4yCFr2ZemYOpSPIsGWeKZl4q7sioXB:zW6ncoyqOp6IsTl/mXB
TLSH: T15F4CBED87AC7CD54E8E97B86E44554BDD68BD12F582D2E8F0392C2386F812F3A472112
Submitted as: 4ac6ed587c585ad493c53681ad0fb1e52819af136b30c307fdf512e8a6092dfd
File type: pe · Size: 534731 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 31 external host(s) at runtime (14 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)

72780 behavior events · 2 ATT&CK techniques · 27 dropped files.

Dropped files

/opt/CAPEv2/storage/analyses/7604/files/585ab97c5d836f292edc9eb1a3c88aec467134ac6e14a0e452ed16e8ed7cdaa0 - 585ab97c5d836f292edc9eb1a3c88aec467134ac6e14a0e452ed16e8ed7cdaa0
/opt/CAPEv2/storage/analyses/7604/files/082acb2f46bffe3edb8e3c532163d24a9a516e3d01fa9e12f591c8203d89688c - 082acb2f46bffe3edb8e3c532163d24a9a516e3d01fa9e12f591c8203d89688c
/opt/CAPEv2/storage/analyses/7604/files/29221ca4e2d433a0194d670daabd74535fce38b5859211ddeb5f0e1d295ef5e1 - 29221ca4e2d433a0194d670daabd74535fce38b5859211ddeb5f0e1d295ef5e1
/opt/CAPEv2/storage/analyses/7604/files/0a838e132386d1097331ce643ae135905e84899c833b97a9a21a37e86de42bde - 0a838e132386d1097331ce643ae135905e84899c833b97a9a21a37e86de42bde
/opt/CAPEv2/storage/analyses/7604/files/00f20ceb0c27eeed6b792e95d8a0d2b132770b9d14a9450cbde95035b74a3133 - 00f20ceb0c27eeed6b792e95d8a0d2b132770b9d14a9450cbde95035b74a3133
/opt/CAPEv2/storage/analyses/7604/files/ab7ad0f5ec5a5bf075d84aef0f356eadb3e62abb6be2057ec1534d0cc619835a - ab7ad0f5ec5a5bf075d84aef0f356eadb3e62abb6be2057ec1534d0cc619835a
/opt/CAPEv2/storage/analyses/7604/files/95d6170ec9b1db48a88e35b4f51f473955e551910725cabdffa3959e891b31ed - 95d6170ec9b1db48a88e35b4f51f473955e551910725cabdffa3959e891b31ed
/opt/CAPEv2/storage/analyses/7604/files/23f2a28e24d2b4af72006c498276a631c9951cc8295911516d77bacea75c5163 - 23f2a28e24d2b4af72006c498276a631c9951cc8295911516d77bacea75c5163
/opt/CAPEv2/storage/analyses/7604/files/ce015f3a7e07cab40881444fdc2d2548d9d160d57bfdf04ad40208d49755d642 - ce015f3a7e07cab40881444fdc2d2548d9d160d57bfdf04ad40208d49755d642
/opt/CAPEv2/storage/analyses/7604/files/860b438425767424eb3f1996daec476801cc4c5a85628c5d1ace7aed02c8c31b - 860b438425767424eb3f1996daec476801cc4c5a85628c5d1ace7aed02c8c31b
/opt/CAPEv2/storage/analyses/7604/files/41d80774cb42cf31c8dc233a2c079a57862c8e85a7e3798a9661e42f8fdd8e9b - 41d80774cb42cf31c8dc233a2c079a57862c8e85a7e3798a9661e42f8fdd8e9b
/opt/CAPEv2/storage/analyses/7604/files/d3ad89a8a128ef75f455324adcf7dc70a53f2692211820389a06af9a3ea75115 - d3ad89a8a128ef75f455324adcf7dc70a53f2692211820389a06af9a3ea75115
/opt/CAPEv2/storage/analyses/7604/files/798007208c7fe4807db0c0d64a6509983e19f270b637a662c1e5c92b8434a3f2 - 798007208c7fe4807db0c0d64a6509983e19f270b637a662c1e5c92b8434a3f2
/opt/CAPEv2/storage/analyses/7604/files/99d7c158679af279d08920319f04e0c4a8ddf81df30990273dbd73a95f0cd612 - 99d7c158679af279d08920319f04e0c4a8ddf81df30990273dbd73a95f0cd612
/opt/CAPEv2/storage/analyses/7604/files/02863af3489058aa6a053400e21afc73d899fd8e7890803b3b38797c1c1ef7d3 - 02863af3489058aa6a053400e21afc73d899fd8e7890803b3b38797c1c1ef7d3

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=1786281803&P2=404&P3=2&P4=htaQQ2yaGdsuhGPViRXGdxON4y9hml35RpvRgg7Zu%2bnHnQjNNdXxKPdrWvAyFl%2bKfsriHOWxyDpQcowBQyFPnA%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=1786281843&P2=404&P3=2&P4=BPMcoCGifKZuF96s5ITOmiF20HO2CfXluPl8fEu3K%2foeYfQgS0cMT92iGthYiEaY7y1YlWxpVNWVXXT%2ftCyYXA%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

20.184.175.21
40.84.97.4
4.230.171.124
4.144.132.114
20.42.179.192
74.178.240.51
74.179.77.204
4.150.223.104
135.232.92.34
52.123.252.242
203.26.79.13
135.233.45.221
92.223.78.30
135.234.160.246
72.154.7.111
52.148.114.188
13.69.109.131
52.110.12.2
52.110.12.26

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