MALICIOUS — 83e8613bddb3265c56ffb5db9dcea24dd91c0e4f3441f853e4c6c9e9255d1658

MALICIOUS — 83e8613bddb3265c56ffb5db9dcea24dd91c0e4f3441f853e4c6c9e9255d1658 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: 83e8613bddb3265c56ffb5db9dcea24dd91c0e4f3441f853e4c6c9e9255d1658
SHA-1: b60e11741aab1eb02b2455fffe0969323d9dcdd7
MD5: fb1b345cb1c56fde4b79b11b5b63be28
imphash: b806352ebc796e5060cd13bc5e12711d
ssdeep: 1536:Ozl0ccWBnqqxbjOB+dGrNjjmJ2NuKuFr1M5B4QbCcIsn:JWB5OB++jOWxn
TLSH: T17C3B91C40CE8D0A1CEA497878E8569FC058EEDABB222507418C5AA1BD7C21FF507E15F
Submitted as: 83e8613bddb3265c56ffb5db9dcea24dd91c0e4f3441f853e4c6c9e9255d1658
File type: pe · Size: 102400 bytes
Verdict: malicious (100/100) · Family: Vobfus

Detections (5 of 56 engines)

ClamAV (daily): Win.Trojan.Changeup-6169544-0
Microsoft Defender: Worm:Win32/Vobfus.EH
Emsisoft (Emergency Kit): Gen:Variant.Injector.836
Trellix Stinger (McAfee): W32/Autorun.worm.ru
Kaspersky (KVRT): Trojan.Win32.Jorik.Vobfus.ahog

MITRE ATT&CK

Why this verdict

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

ClamAV (daily) flagged Win.Trojan.Changeup-6169544-0 (rule Win.Trojan.Changeup-6169544-0) - 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.EH (rule Worm:Win32/Vobfus.EH) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.Injector.836 (rule Gen:Variant.Injector.836) - engine signal, weight 0.55, confidence 0.85
Trellix Stinger (McAfee) flagged W32/Autorun.worm.ru (rule W32/Autorun.worm.ru) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Trojan.Win32.Jorik.Vobfus.ahog (rule Trojan.Win32.Jorik.Vobfus.ahog) - 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 1 external host(s) and 5 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1497.001, T1082, T1622 - 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)

45933 behavior events · 3 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\paeruiv.exe - d7a650b9a86f06624c3c9febc2410f2f368ad2bac39944f8389019646b0fc2da
b8613d058761f840c4da7d50d1f9e8a4187767005ba33d8a3927035d8d74b6a8 - b8613d058761f840c4da7d50d1f9e8a4187767005ba33d8a3927035d8d74b6a8
f4629b133aaf83314e6821b9bfcb945392cb03bf8c7118790979140798f66b47 - f4629b133aaf83314e6821b9bfcb945392cb03bf8c7118790979140798f66b47
11e068f64a6bea4e989a14605b044077c93fb7539e65e808ebbed59736810579 - 11e068f64a6bea4e989a14605b044077c93fb7539e65e808ebbed59736810579

Embedded URLs

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

Embedded domains

ns1.spansearcher.net
ns1.spinsearcher.org
ns1.player1352.net

Embedded IP addresses

40.79.150.120
4.230.171.124
52.230.59.222
57.155.104.224
52.110.12.47
52.110.12.1
135.233.45.221
20.42.179.204
40.84.85.40
52.110.12.20
52.110.12.37
52.148.114.188
72.153.5.97

File paths

C:\Program
C:\Windows\system32;C:\Windows\system;

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report