MALICIOUS — virussign.com_37cec2eda12962a43dc733d3d0ca8520.vir

MALICIOUS — virussign.com_37cec2eda12962a43dc733d3d0ca8520.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the OmJfa4pdRVd family. 6 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: e815dcfcb89b458b27af46ef5bb1dd664a48c01efe8a2f70275a9570a55688d7
SHA-1: 0a82a124d3d4e5a598071ceb326be8fc05663372
MD5: 37cec2eda12962a43dc733d3d0ca8520
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 6144:Nh9wv1Ut3nh9wv1U7pkvociuIudlTa9ajd9x:Nh9wtah9wtPAK5lTawvx
TLSH: T1314312065102A66DD4D6BD513C89992EBC112BA48D27EE80DD0A3FDF9084B37A9F0DCD
Submitted as: virussign.com_37cec2eda12962a43dc733d3d0ca8520.vir
File type: pe · Size: 239104 bytes
Verdict: malicious (99/100) · Family: OmJfa4pdRVd

Source: VirusSign · first seen 2026-08-17T00:00:00.000Z · SHA-256 verified

Detections (6 of 55 engines)

MalwareAnalyser heuristics (entropy/packer): UPX
ClamAV (daily): Win.Ransomware.Somhoveran-9870372-0
Detect It Easy (packer/type): DIE:Turbo Linker
Microsoft Defender: Trojan:Win32/Vindor!pz
Emsisoft (Emergency Kit): Gen:Trojan.ShellHook.omJfa4pdRVd
Kaspersky (KVRT): Worm.Win32.Wenper.b

MITRE ATT&CK

Why this verdict

The malicious score of 99/100 is the fusion of 8 weighted signals:

ClamAV (daily) flagged Win.Ransomware.Somhoveran-9870372-0 (rule Win.Ransomware.Somhoveran-9870372-0) - engine signal, weight 0.90, confidence 0.95
Dropped a malicious payload (Somhoveran): net.cpl - dynamic signal, weight 0.62, confidence 0.90
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 21 external host(s) at runtime (16 HTTP) - network signal, weight 0.40, confidence 0.80
Detect It Easy (packer/type) flagged DIE:Turbo Linker (rule DIE:Turbo Linker) - engine signal, weight 0.35, confidence 0.70
Packing/obfuscation: UPX, high-entropy-sections:UPX1, Turbo Linker - static signal, weight 0.25, confidence 0.55
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90

Dynamic analysis (windows)

316 behavior events · 2 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Windows\System32\net.cpl - 8bff7c3fe98eb8dd0a0d37f7b71d2ba7a920d30d0a252ce1145f0ed55a470baa
C:\Windows\System32\wlogon.dll - a21a0d576ed078783340e3ed405ed676d3b5e8da2a7393b8944bb71c0d2dab66
C:\Windows\System32\lcss.exe - b0a08ebc479c53c52098057b8465266bae9294247b785b8df86c93cdbb0f8742
C:\Windows\System32\crypto.dll - f88fb2dd98f55c445ccc9c1a989a5067e01bb0450c763c4c693c577c689fdcae

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787654757&P2=404&P3=2&P4=ObOFjSPZQItJr4P9yMktBXyJyy8k3LcushewpfTqtgc3LiStuChSeCImJEMgz0JAwi4eVrsVyPnE7Uf0BPYnmw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded IP addresses

92.223.78.30
135.233.95.80
104.46.162.230
52.123.252.233
4.230.171.124
172.215.188.232
20.247.185.124
4.247.188.233
20.165.94.63
20.42.65.91
74.178.240.51
20.112.250.133
52.123.128.14
40.99.133.226
135.234.160.246
203.26.79.13
135.232.92.34
72.153.5.130
52.110.12.48
52.148.114.188
52.110.12.33

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report