MALICIOUS — virussign.com_35b1caaa2e06132953db7b15f30cd4f0.vir

MALICIOUS — virussign.com_35b1caaa2e06132953db7b15f30cd4f0.vir is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the MmJfa4pdRVd family. 6 of 52 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: 392313c88ff884e1f4ca97e22e258a22c40c7e78acf2238816a9457c98253661
SHA-1: 7dc67992528e4c572361376f2d1d506f143cfd7d
MD5: 35b1caaa2e06132953db7b15f30cd4f0
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 3072:IyrN/sVywaEj1Us10nfbyrN/sVywaEj1UsxoVgQDzYA4Jid+g3vWr8Bt+OqeyrVm:Nh9wv1Uveh9wv1U6eHwOz/QOuwC+D
TLSH: T148421307998692BCD4D7ADA41C98F34DECA35F6C1260DB8424822F66600DAA3F1F47DD
Submitted as: virussign.com_35b1caaa2e06132953db7b15f30cd4f0.vir
File type: pe · Size: 210944 bytes
Verdict: malicious (99/100) · Family: MmJfa4pdRVd

Source: VirusSign · first seen 2026-07-31T00:00:00.000Z · SHA-256 verified

Detections (6 of 52 engines)

MalwareAnalyser heuristics (entropy/packer): UPX
ClamAV (daily): Win.Ransomware.Somhoveran-9870372-0
Detect It Easy (packer/type): DIE:UPX 1.24
Microsoft Defender: Trojan:Win32/Vindor!pz
Emsisoft (Emergency Kit): Gen:Trojan.ShellHook.mmJfa4pdRVd
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 (KmJfa4pdRVd): c7c7432e04f60949b4bc7f555663a7dece20bd745be93090aadf7e0b7f833b22 - dynamic signal, weight 0.80, 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 34 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
Detect It Easy (packer/type) flagged DIE:UPX 1.24 (rule DIE:UPX 1.24) - engine signal, weight 0.35, confidence 0.70
Packing/obfuscation: UPX, high-entropy-sections:UPX1, UPX 1.24 - 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)

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

Dropped files

/opt/CAPEv2/storage/analyses/30551/files/c7c7432e04f60949b4bc7f555663a7dece20bd745be93090aadf7e0b7f833b22 - c7c7432e04f60949b4bc7f555663a7dece20bd745be93090aadf7e0b7f833b22
/opt/CAPEv2/storage/analyses/30551/files/1b848ae584ff19c28d3ddbe30697d88816b41d98aba115c68993fbb4bf73c463 - 1b848ae584ff19c28d3ddbe30697d88816b41d98aba115c68993fbb4bf73c463
/opt/CAPEv2/storage/analyses/30551/files/3488c5147c971d16f54c40921b882a17b0fce5c65ca94220968d2ab8168aeb50 - 3488c5147c971d16f54c40921b882a17b0fce5c65ca94220968d2ab8168aeb50
/opt/CAPEv2/storage/analyses/30551/files/6e0e2e8a8603376d8bc5e502a4b323022334fc44c1ab72d98b1efa996d0bed02 - 6e0e2e8a8603376d8bc5e502a4b323022334fc44c1ab72d98b1efa996d0bed02

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/2cbcf400-ac8d-4d86-9d69-c7f0dff56d2e/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com

Embedded IP addresses

4.150.223.112
20.247.184.142
4.230.171.124
4.247.188.233
85.210.193.152
74.178.240.61
4.150.223.103
135.232.92.97
20.231.239.246
40.99.134.2
52.123.129.14
52.123.128.14
172.178.240.163
162.159.142.9
72.145.35.109
74.179.71.159
52.148.114.188
52.110.12.15
203.26.79.13
52.110.12.40

More MmJfa4pdRVd samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report