MALICIOUS — b26f1ab703d1322ceb04f40be8ce888bd9645af14e91dca056b2e2af843818ea

MALICIOUS — b26f1ab703d1322ceb04f40be8ce888bd9645af14e91dca056b2e2af843818ea 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: b26f1ab703d1322ceb04f40be8ce888bd9645af14e91dca056b2e2af843818ea
SHA-1: 3d813b6ae68d7c7ffa2f50a000a6af1a261f2c41
MD5: 7baad4792261baba4f470028cd195444
imphash: 7cb28e403eb5845395a6e833a4cff526
ssdeep: 1536:jCy+5ns5p/klMBh6i4znnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnp:ed5ns5FFGFF
TLSH: T13A3900D7634298D6E6F5E1AB0C6D0FDE208D4B401B3B004D2E6E971E9B8D473A13196E
Submitted as: b26f1ab703d1322ceb04f40be8ce888bd9645af14e91dca056b2e2af843818ea
File type: pe · Size: 86016 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): Trojan.GenericKDZ.80216
Kaspersky (KVRT): Worm.Win32.VBNA.b

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 Trojan.GenericKDZ.80216 (rule Trojan.GenericKDZ.80216) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Worm.Win32.VBNA.b (rule Worm.Win32.VBNA.b) - 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 17 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: 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)

38988 behavior events · 3 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\feioli.exe - cde37e10538d5ff3dffb415efa68ddc842c6c4a07c24598cafae95193bdb72ce
c64077b7662a2e8df48646b90ed162ba2732d4880d8c2606e417f7da7aa0ab1e - c64077b7662a2e8df48646b90ed162ba2732d4880d8c2606e417f7da7aa0ab1e
bd74db4fc5a832ecc084eae03f392ef5a7f951a85bf480ecda7a5b64d3237bca - bd74db4fc5a832ecc084eae03f392ef5a7f951a85bf480ecda7a5b64d3237bca
123b374fa94d30c8e6459e0a11ae1577da140baaa203b2b6ea09f83cb8119a58 - 123b374fa94d30c8e6459e0a11ae1577da140baaa203b2b6ea09f83cb8119a58

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://c.pki.goog/r/r1.crl
http://x2.c.lencr.org/
http://ye.c.lencr.org/
http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
http://yr.c.lencr.org/

Embedded domains

ns4.thepicturehut.net
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org

Embedded IP addresses

20.184.175.0
20.247.184.197
4.230.171.124
4.144.132.223
172.64.154.167
40.84.85.40
172.215.188.225
135.234.160.245
72.145.35.100
52.148.114.188
52.110.12.56
52.110.12.49

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report