MALICIOUS — 858a0d063950964c2fcf559e57c2b0b5f0ef462c5ad8c381b6034f62add4a5b7

MALICIOUS — 858a0d063950964c2fcf559e57c2b0b5f0ef462c5ad8c381b6034f62add4a5b7 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: 858a0d063950964c2fcf559e57c2b0b5f0ef462c5ad8c381b6034f62add4a5b7
SHA-1: f33eae4a59de8f523eed6d806482f57ed0456b10
MD5: c518cf7a50514ddd843d3af2bfde1c5f
imphash: 7cb28e403eb5845395a6e833a4cff526
ssdeep: 768:yYgdm0cyphEvwjcxp/k/J/MkH5DAGo6DrdGsy5N:yYSncp/klMBh6i5N
TLSH: T127394DC36681A4E6E5F6E0AB1D5C8FCD208DCB811F3700196A6E972F4DD8473A121A5F
Submitted as: 858a0d063950964c2fcf559e57c2b0b5f0ef462c5ad8c381b6034f62add4a5b7
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 2 external host(s) and 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)

40363 behavior events · 3 ATT&CK techniques · 5 dropped files.

Dropped files

C:\Users\analyst\vnhop.exe - bc9ae05cb468c13ee4b7068772ce0de961cbd042b51926d278cb43659564b534
c57ba73fdc75fc6b3d1f571f35bd4eade1ff66fa08cde3211955a7347345d5ab - c57ba73fdc75fc6b3d1f571f35bd4eade1ff66fa08cde3211955a7347345d5ab
cf8f1cacbfc10f09edf234ac3ee05a286b3879c659091ac9d544dce01919bed7 - cf8f1cacbfc10f09edf234ac3ee05a286b3879c659091ac9d544dce01919bed7
04e99a6e738c5c979d532d124fd3999d466f093be4d69eddaf1180c981924346 - 04e99a6e738c5c979d532d124fd3999d466f093be4d69eddaf1180c981924346
d727f5d0be133f2dcc894aac57ae7f6305bdbf9eb3cd9e2abec67905d595cfd9 - d727f5d0be133f2dcc894aac57ae7f6305bdbf9eb3cd9e2abec67905d595cfd9

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

ns1.thepicturehut.net
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org

Embedded IP addresses

13.69.239.69
52.123.252.231
52.230.60.54
4.230.171.124
20.42.179.192
52.110.12.2
52.110.12.32
4.150.223.113
20.42.65.90
172.178.240.162
184.84.165.171
172.215.188.232
72.154.7.107
52.148.114.188
52.110.12.54
52.110.12.14

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report