MALICIOUS — 88828f1a9692ace84023e6f67113e6e770185849a131b1f27f4cbcf4fed8b8f1

MALICIOUS — 88828f1a9692ace84023e6f67113e6e770185849a131b1f27f4cbcf4fed8b8f1 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vobfus family. 4 of 56 detection engines flagged it, exhibiting 5 ATT&CK techniques.

Identification

SHA-256: 88828f1a9692ace84023e6f67113e6e770185849a131b1f27f4cbcf4fed8b8f1
SHA-1: 3d76ad10f12502fdbd8afa481da614cc83bbce7f
MD5: 0a6c7a8b4386f89542d7da85aedf157e
imphash: 8d07b6b486ec2177dda749e56f17a12d
ssdeep: 768:brmBfFyvn+GCeeNl5jT1gn/kzwKa0z22vL8LHlxf2l/xMe07UGjJdk2fBWvXOmen:PmBfFy2nfen8gp2pxOUGg1CTOVc
TLSH: T1B93861971AA9D429C0F6E49F08493F7F148D574405BE01792EDA720F28D62B3A232F6D
Submitted as: 88828f1a9692ace84023e6f67113e6e770185849a131b1f27f4cbcf4fed8b8f1
File type: pe · Size: 81920 bytes
Verdict: malicious (100/100) · Family: Vobfus

Detections (4 of 56 engines)

ClamAV (daily): Win.Worm.Vobfus-7460240-0
Microsoft Defender: Worm:Win32/Vobfus.AC
Emsisoft (Emergency Kit): Gen:Trojan.Chinky.2
Kaspersky (KVRT): Worm.Win32.VBNA.brwx

MITRE ATT&CK

Why this verdict

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

ClamAV (daily) flagged Win.Worm.Vobfus-7460240-0 (rule Win.Worm.Vobfus-7460240-0) - 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.AC (rule Worm:Win32/Vobfus.AC) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Trojan.Chinky.2 (rule Gen:Trojan.Chinky.2) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Worm.Win32.VBNA.brwx (rule Worm.Win32.VBNA.brwx) - 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 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
enumerate processes (rule enumerate processes) - capa signal, weight 0.20, confidence 0.60
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: 2 finding(s) elsewhere in the guest, not attributed to this sample, e.g. SSDT hook (rule windows.ssdt.SSDT) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

52634 behavior events · 3 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\suianah.exe - 3f1987a4d9d8e82868bd5276bf8449e42da43c0fb67c977edae949ecee7ee7d5
0b8f9487f9fdb215093452829bb77ccd7a18a48d14a846ca77a52b06dcbc7dc2 - 0b8f9487f9fdb215093452829bb77ccd7a18a48d14a846ca77a52b06dcbc7dc2
bfa50cdac399a547afe1d330959450b1c6b3535f686033a229217b0dc8138235 - bfa50cdac399a547afe1d330959450b1c6b3535f686033a229217b0dc8138235
abe944f2dc3a87bbe547b74aafd0129e4b3f71da12cf1c94b62c5ca6d60fffac - abe944f2dc3a87bbe547b74aafd0129e4b3f71da12cf1c94b62c5ca6d60fffac

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

20.184.175.2
52.123.252.194
20.247.184.197
4.230.171.124
104.18.33.89
52.110.12.46
57.155.104.224
172.178.240.162
52.148.114.188
52.110.12.21
72.145.35.106
52.110.12.16

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report