MALICIOUS — d5a4f063d0092d4adc3a4d187a4cbbd5199ee32e92ae20da423ab3daff81a10a

MALICIOUS — d5a4f063d0092d4adc3a4d187a4cbbd5199ee32e92ae20da423ab3daff81a10a 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: d5a4f063d0092d4adc3a4d187a4cbbd5199ee32e92ae20da423ab3daff81a10a
SHA-1: 85b01cda7ef3b135ea610e33466a084b9897f4f3
MD5: 4a55e465f91338547e78162a274910d8
imphash: 8d07b6b486ec2177dda749e56f17a12d
ssdeep: 768:bBGBfFyvn+GCuYNJTjR1AHcKa0z22vL8LHlxf2l/xMe07UGjJdk2fBWvXOme1s8j:dGBfFy2HtuHgp2pxOUGg1CTOJw
TLSH: T18338519717D9C0A8C0F6E4AF09493FBF268D5744057A04685E9A270F6CD22B3A131FAD
Submitted as: d5a4f063d0092d4adc3a4d187a4cbbd5199ee32e92ae20da423ab3daff81a10a
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 6 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
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)

52207 behavior events · 3 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\lmtaed.exe - 86686fe4bbb73f8d7113533d3404460fe90625cd818c020317adf543c2bfdf92
694a96977edb134d35e866c81ef643b83b7b115f3c7f910695e9acd7776eb956 - 694a96977edb134d35e866c81ef643b83b7b115f3c7f910695e9acd7776eb956
11acae4b292ec638b8eaf7fb7746e8c7594d51484772bb9f6ed984bcbb1974aa - 11acae4b292ec638b8eaf7fb7746e8c7594d51484772bb9f6ed984bcbb1974aa
2c067f66e4f2f0056070d4e0cfb53de14271a81b42da47c6f9b397f06e7312f3 - 2c067f66e4f2f0056070d4e0cfb53de14271a81b42da47c6f9b397f06e7312f3

Embedded URLs

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

Embedded domains

ns3.thepicturehut.net

Embedded IP addresses

20.184.175.11
20.42.179.204
52.230.60.54
4.230.171.124
57.154.63.210
135.232.92.97
74.178.240.61
51.105.71.137
135.233.95.144
172.64.154.167
92.223.78.30
135.234.160.244
57.155.104.224
72.153.5.60
52.148.114.188
52.110.12.18
52.110.12.25

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report