MALICIOUS — wlogon.dll

MALICIOUS — wlogon.dll is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the HmJfa4pdRVd family. 6 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: 341c1edbb9a4a8b81e2d4a7b612a709f3598786f877fd6578fb6312b39ae152e
SHA-1: 8cc8cbafe5fd08fbb1ac23e485986891b3abb851
MD5: f345feb16ac41d4c31032f05f3a97f07
imphash: e60d0e6577962a1096407913ed128742
ssdeep: 3072:IyrN/sVywaEj1Us10nfbyrN/sVywaEj1UsAcr+RENo:Nh9wv1Uveh9wv1UDvMo
TLSH: T1143C0207A9D2A0BCE4D3F9A41C94E32DF8955F6C1435998039432B6A901D7637CA8ECD
Submitted as: wlogon.dll
File type: pe · Size: 118784 bytes
Verdict: malicious (99/100) · Family: HmJfa4pdRVd

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.hmJfa4pdRVd
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 22 external host(s) at runtime (15 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)

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

Dropped files

C:\Windows\System32\net.cpl - 0d8d14527bc93787ed6891e86edf8225d50bc11b5a2a452879ae108963576380
C:\Windows\System32\lcss.exe - 1786df4c559bf91f7d77a6cb9a0c90cbf7b41c4c897cdfbabad9e60b5f412b78
C:\Windows\System32\crypto.dll - 778bfc951bb5986b83bebce14998af02683962608ad63036f8d29baddf666964
C:\Windows\System32\wlogon.dll - a981949a58f37fba3cf33ccf87b89c509f7af90b07184b294af1719418754130

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

Embedded IP addresses

52.110.12.42
52.110.12.28
135.233.95.80
40.84.85.40
4.150.223.103
4.230.171.124
20.42.179.192
20.247.185.124
74.179.77.204
135.232.92.97
20.42.65.85
4.150.223.110
20.231.239.246
40.103.64.226
52.123.129.14
135.234.160.245
203.26.79.13
72.153.5.137
74.178.232.29
52.148.114.188
52.110.12.37
52.110.12.5

More HmJfa4pdRVd samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report