MALICIOUS — 89bfeaf72c610026ccfcb09e69dac8a28597ba89b62a5ce7f2e2b55399c682b2

MALICIOUS — 89bfeaf72c610026ccfcb09e69dac8a28597ba89b62a5ce7f2e2b55399c682b2 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vobfus family. 5 of 56 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

SHA-256: 89bfeaf72c610026ccfcb09e69dac8a28597ba89b62a5ce7f2e2b55399c682b2
SHA-1: 75355fa5e4375b32c05cbd7b9053cddf9322565f
MD5: 6485e850b1169a7fae2abd181bc2507b
imphash: 68c42d58a53468d63387bfe7a99cdc7c
ssdeep: 1536:WCpqsOFOSPEutHwHiHoHV/NBbgzrqNldFCnDNlN1t7gH:TpqsOFOSc/NBbgzrqNldFCnDNlN1S
TLSH: T18F3860C14664CC59C46FEA0F0F036CAF07CDD58B9D26B841658B770E249E1B32529EAE
Submitted as: 89bfeaf72c610026ccfcb09e69dac8a28597ba89b62a5ce7f2e2b55399c682b2
File type: pe · Size: 76800 bytes
Verdict: malicious (100/100) · Family: Vobfus

Detections (5 of 56 engines)

ClamAV (daily): Html.Trojan.VBSpy-2
Microsoft Defender: Worm:Win32/Vobfus!pz
Emsisoft (Emergency Kit): Gen:Variant.Midie.166536
Trellix Stinger (McAfee): Downloader-CJX.gen.c
Kaspersky (KVRT): Worm.Win32.VBNA.algn

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 13 weighted signals:

ClamAV (daily) flagged Html.Trojan.VBSpy-2 (rule Html.Trojan.VBSpy-2) - engine signal, weight 0.90, confidence 0.95
1 behavioral detection(s) across 1 rule(s): Registry Run Key Persistence [high] (rule tl-run-key) - dynamic signal, weight 0.60, confidence 0.90
Microsoft Defender flagged Worm:Win32/Vobfus!pz (rule Worm:Win32/Vobfus!pz) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.Midie.166536 (rule Gen:Variant.Midie.166536) - engine signal, weight 0.55, confidence 0.85
Trellix Stinger (McAfee) flagged Downloader-CJX.gen.c (rule Downloader-CJX.gen.c) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Worm.Win32.VBNA.algn (rule Worm.Win32.VBNA.algn) - engine signal, weight 0.55, confidence 0.85
Observed at runtime: Registry Run Key Persistence (T1547.001) (rule Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
Contacted 3 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1082, T1622, T1497.001 - dynamic signal, weight 0.40, confidence 0.75
Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Memory forensics: 3 finding(s) elsewhere in the guest, not attributed to this sample, e.g. process hidden from a listing (rule windows.psxview.PsXView) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

21175 behavior events · 3 ATT&CK techniques · 3 dropped files.

Dropped files

C:\Users\analyst\xcrauk.exe - 361ed816fd09f8b6e39b191ff51deb314dbd26800b319055175b4009b8b6b9b3
614b2d7980e148f803c9a057c9340fa534270240428b9041949b256355e89609 - 614b2d7980e148f803c9a057c9340fa534270240428b9041949b256355e89609
a55935a2b81581838dc413693fe7171d3726b94138c053ca2b4367d8d0a6dd98 - a55935a2b81581838dc413693fe7171d3726b94138c053ca2b4367d8d0a6dd98

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded domains

ns4.thepicturehut.net

Embedded IP addresses

20.42.65.89
52.253.84.76
4.230.171.124
172.64.154.167
85.210.196.11
135.233.45.221
72.145.35.100
52.148.114.188
52.110.12.56
52.110.12.10

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report