MALICIOUS — 65ab6a421fd1f425fca60ebcd0c40b3fafb25ee828f6af060d32ca820af8d555

MALICIOUS — 65ab6a421fd1f425fca60ebcd0c40b3fafb25ee828f6af060d32ca820af8d555 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 4 ATT&CK techniques.

Identification

SHA-256: 65ab6a421fd1f425fca60ebcd0c40b3fafb25ee828f6af060d32ca820af8d555
SHA-1: 1b066a3ecb5a76cf7e6c115798ab3e0d1bad05fe
MD5: eeb7fa859002814716c1c002f449dab0
imphash: 1000cf882e08f17da2dc5a24f96c3baa
ssdeep: 768:dRGPbKE7lQdElbXSDPFlhFM/aCKdN27fx0Xn6YOD5ryTKx:d8PbzDbi9lD8K727fxi6Yix
TLSH: T13338219F4A01A080DDE3E05F395A6EDE00CEA6458B3312DD759B124F3680377A839B9D
Submitted as: 65ab6a421fd1f425fca60ebcd0c40b3fafb25ee828f6af060d32ca820af8d555
File type: pe · Size: 77824 bytes
Verdict: malicious (100/100) · Family: Vobfus

Detections (4 of 56 engines)

ClamAV (daily): Win.Worm.Autorun-440
Microsoft Defender: Worm:Win32/Vobfus.AC
Emsisoft (Emergency Kit): Gen:Trojan.Chinky.2
Kaspersky (KVRT): Worm.Win32.Vobfus.exjr

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 12 weighted signals:

ClamAV (daily) flagged Win.Worm.Autorun-440 (rule Win.Worm.Autorun-440) - 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.Vobfus.exjr (rule Worm.Win32.Vobfus.exjr) - 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
Contacted 17 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)

63646 behavior events · 2 ATT&CK techniques · 5 dropped files.

Dropped files

C:\Users\analyst\teoecu.exe - e22ddff1839744943548aa26d9c0511453495fc47f389c401d6eccb97faf94f4
244cf9f88fe49a864360e4c42c669b43032b585f3698a5a1a566fc290fcc3a90 - 244cf9f88fe49a864360e4c42c669b43032b585f3698a5a1a566fc290fcc3a90
17096a7cdca67fdd8cdc7726d8e94983ba59f10e5a8bc17a7c99dfc3ab43bf8b - 17096a7cdca67fdd8cdc7726d8e94983ba59f10e5a8bc17a7c99dfc3ab43bf8b
28f627f77da772f81b3e701888554f567ab6b763f57280fa19723a5119cbe310 - 28f627f77da772f81b3e701888554f567ab6b763f57280fa19723a5119cbe310
b041fe3bf57a3b36b64875e29faf68e50a8c595bfef3cc7a57c09dbea4f5294c - b041fe3bf57a3b36b64875e29faf68e50a8c595bfef3cc7a57c09dbea4f5294c

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

4.150.223.96
52.123.252.239
20.42.179.204
20.247.184.142
135.233.95.144
20.247.184.197
135.233.95.135
52.182.141.63
4.150.223.111
4.230.171.124
92.223.78.30
72.153.5.97
52.148.114.188
52.110.12.26
52.110.12.1

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report