MALICIOUS — ff1f64a0c30b839dad8540139fb29a2ac9ac1ec3ef6ffbb240674232fcde35a3

MALICIOUS — ff1f64a0c30b839dad8540139fb29a2ac9ac1ec3ef6ffbb240674232fcde35a3 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Infostealer family. 4 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: ff1f64a0c30b839dad8540139fb29a2ac9ac1ec3ef6ffbb240674232fcde35a3
• SHA-1: cf729ec74df4b81f3ed0bada644e0191f3056525
• MD5: 85f4064922bb48a1470d8c53fcd16041
• imphash: f34d5f2d4577ed6d9ceec516c1f5a744
• ssdeep: 192:QSBksuv9MuIpieMZZ3E93VnjdwqzU3TgCJDS:2lgieM4FnhwqopJD
• TLSH: T1EE22FCDF6A5C5B43CE79E41B6156CA3E9440749B28F22B8C05044733557842398BE7EB
• Submitted as: ff1f64a0c30b839dad8540139fb29a2ac9ac1ec3ef6ffbb240674232fcde35a3
• File type: pe · Size: 9728 bytes
• Verdict: malicious (100/100) · Family: Infostealer

Detections (4 of 56 engines)

• ClamAV (daily): Win.Malware.Msilkrypt-9839010-0
• Microsoft Defender: PWS:MSIL/Infostealer.PAC!MTB
• Emsisoft (Emergency Kit): Gen:Trojan.Mardom.PN.18
• Kaspersky (KVRT): HEUR:Trojan.MSIL.Agent.gen

MITRE ATT&CK

• T1543.003
• T1112

Why this verdict

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

• ClamAV (daily) flagged Win.Malware.Msilkrypt-9839010-0 (rule Win.Malware.Msilkrypt-9839010-0) - engine signal, weight 0.90, confidence 0.95
• Microsoft Defender flagged PWS:MSIL/Infostealer.PAC!MTB (rule PWS:MSIL/Infostealer.PAC!MTB) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Trojan.Mardom.PN.18 (rule Gen:Trojan.Mardom.PN.18) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Trojan.MSIL.Agent.gen (rule HEUR:Trojan.MSIL.Agent.gen) - engine signal, weight 0.55, confidence 0.85
• Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
• 1 behavioral detection(s) across 1 rule(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
• Contacted 1 external host(s) and 3 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
• Anti-analysis: T1082 - dynamic signal, weight 0.40, confidence 0.75
• Extracted RedLine config (0 C2) - engine signal, weight 0.45, confidence 0.60
• Embedded network infrastructure: http://tempuri.org/IUserService/GetUsersT, http://194.87.145.184:6484/UserService, 194.87.145.184 - 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
• Memory forensics: 4 finding(s) elsewhere in the guest, not attributed to this sample, e.g. RWX/private injected region in SppExtComObj.E (pid 5644) (rule windows.malfind.Malfind) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

4060 behavior events · 2 ATT&CK techniques · 0 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• update.googleapis.com
• login.live.com
• desktop-hsgcbep
• v20.events.data.microsoft.com
• licensing.mp.microsoft.com
• config.edge.skype.com
• windows.msn.com
• officeclient.microsoft.com
• www.msn.com
• odc.officeapps.live.com
• assets.msn.com
• www.bing.com
• th.bing.com
• watson.events.data.microsoft.com
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D

Embedded URLs

• http://tempuri.org/IUserService/GetUsersT
• http://194.87.145.184:6484/UserService
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl

Embedded domains

• schemas.datacontract.org
• tempuri.org

Embedded IP addresses

• 194.87.145.184
• 13.89.179.15
• 20.247.184.197
• 52.123.252.235
• 4.230.171.124
• 104.18.33.89
• 135.234.160.245
• 172.66.2.5
• 52.110.12.47
• 52.110.12.37

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report