MALICIOUS — 907_WinX.OperationDianxun.bin

MALICIOUS — 907_WinX.OperationDianxun.bin is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the CobaltStrikeLoader family. 5 of 52 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

• SHA-256: cf65cc6e4b2b0c3f602b16398c8c30c277b8cfaed689fe7cb61b92560d4e5b1b
• SHA-1: 2e8c3764d3d4550fc94baf8423ef5b059831f689
• MD5: a8e3b108e5ccf3d1d0d8fb34e5f96391
• imphash: f34d5f2d4577ed6d9ceec516c1f5a744
• ssdeep: 384:QcBAVdmKEr84dWa882G8ap2b1deDo76m99Ti8NcgATTW6VVWwbkzYcEAG8PZ:7BAVdmKErbdR6W0deDI6mrO8GpFwYcE
• TLSH: T1592BF8CFE628670BC6A9ED061145A4BF6062F8ED88B9306C074001B17B55F27DCAB65F
• Submitted as: 907_WinX.OperationDianxun.bin
• File type: pe · Size: 22528 bytes
• Verdict: malicious (99/100) · Family: CobaltStrikeLoader

Detections (5 of 52 engines)

• capa (capabilities): capability:execution/powershell
• Microsoft Defender: Backdoor:MSIL/CobaltStrikeLoader.F!MTB
• Emsisoft (Emergency Kit): Gen:Variant.MSILPerseus.234641
• Trellix Stinger (McAfee): Trojan-FSZD!A8E3B108E5CC
• Kaspersky (KVRT): UDS:Trojan.MSIL.Wcl.gen

MITRE ATT&CK

• T1059.001
• T1112
• T1105

Why this verdict

The malicious score of 99/100 is the fusion of 11 weighted signals:

• Memory forensics: 3 finding(s), e.g. RWX/private injected region in svchost.exe (pid 928) (rule windows.malfind.Malfind) - memory signal, weight 0.60, confidence 0.85
• Microsoft Defender flagged Backdoor:MSIL/CobaltStrikeLoader.F!MTB (rule Backdoor:MSIL/CobaltStrikeLoader.F!MTB) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Variant.MSILPerseus.234641 (rule Gen:Variant.MSILPerseus.234641) - engine signal, weight 0.55, confidence 0.85
• Trellix Stinger (McAfee) flagged Trojan-FSZD!A8E3B108E5CC (rule Trojan-FSZD!A8E3B108E5CC) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged UDS:Trojan.MSIL.Wcl.gen (rule UDS:Trojan.MSIL.Wcl.gen) - engine signal, weight 0.55, confidence 0.85
• Dropped a suspicious payload: cf65cc6e4b2b0c3f602b16398c8c30c277b8cfaed689fe7cb61b92560d4e5b1b - dynamic signal, weight 0.50, confidence 0.90
• execute via PowerShell (rule execute via PowerShell) - capa signal, weight 0.40, confidence 0.80
• Anti-analysis: T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
• Embedded network infrastructure: 16.0.2.1 - static signal, weight 0.35, confidence 0.60
• Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
• Extracted generic config (1 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

6752 behavior events · 1 ATT&CK techniques · 2 dropped files.

Runtime network

• none

Dropped files

• /opt/CAPEv2/storage/analyses/6154/files/8fde3cfd1baba5009073d1e52dd01be49eedcf1855f801a2b464a480c9b2b05c - 8fde3cfd1baba5009073d1e52dd01be49eedcf1855f801a2b464a480c9b2b05c
• /opt/CAPEv2/storage/analyses/6154/files/cf65cc6e4b2b0c3f602b16398c8c30c277b8cfaed689fe7cb61b92560d4e5b1b - cf65cc6e4b2b0c3f602b16398c8c30c277b8cfaed689fe7cb61b92560d4e5b1b

Embedded URLs

• http://schemas.microsoft.com/SMI/2005/WindowsSettings

Embedded domains

• schemas.microsoft.com

Embedded IP addresses

• 16.0.2.1

File paths

• C:\Users\user\Desktop\tools\ConsoleApp2\ConsoleApp2\ConsoleApp2\obj\Release\ConsoleApp2.pdb

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report