MALICIOUS — be73c49aaa7e8130a636f8996bf47d5d038c1cdbe614f49ea0b3eff3607ff4bc

MALICIOUS — be73c49aaa7e8130a636f8996bf47d5d038c1cdbe614f49ea0b3eff3607ff4bc is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Filerepmalware family. 8 of 55 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

• SHA-256: be73c49aaa7e8130a636f8996bf47d5d038c1cdbe614f49ea0b3eff3607ff4bc
• SHA-1: 721e8c0e28c2d90ad6372c25d08b9e571d2baf5e
• MD5: 822f4bdc5b8d9a30bff06f07b9557fab
• imphash: 7732c84aec7391973c26fbc2c07a6022
• ssdeep: 24576:W8ONP/oXSaGX59FF96X0JxQSv8ONP/oXSaGX59FF96X0JxQ3Q1x:NO+rGVV0O+rGVGQP
• TLSH: T178596B8D421F7301D672CA641F10BE9C50A6B0EB227D7B48DB47C12F67E3B1BA8650A5
• Submitted as: be73c49aaa7e8130a636f8996bf47d5d038c1cdbe614f49ea0b3eff3607ff4bc
• File type: pe · Size: 1780681 bytes
• Verdict: malicious (99/100) · Family: Filerepmalware

Detections (8 of 55 engines)

• YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
• capa (capabilities): capability:collection/keylog
• ClamAV (daily): Win.Malware.Filerepmalware-9871423-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• YARA: MalwareAnalyser community pack: TL_Shellcode_VirtualAlloc_Exec
• YARA: Yara-Rules community: YR_Packer_ASPack_MPRESS
• LIEF (executable format parser): lief:invalid-authenticode
• Microsoft Defender: Trojan:Win32/Sabsik.FL.B!ml

MITRE ATT&CK

• T1055
• T1071.001
• T1057
• T1056.001

YARA

• Windows_Injection_Api_Combo

Why this verdict

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

• ClamAV (daily) flagged Win.Malware.Filerepmalware-9871423-0 (rule Win.Malware.Filerepmalware-9871423-0) - engine signal, weight 0.90, confidence 0.95
• Process injection API combination (rule Windows_Injection_Api_Combo) - yara signal, weight 0.65, confidence 0.90
• capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70
• YARA: MalwareAnalyser community pack flagged TL_Shellcode_VirtualAlloc_Exec (rule TL_Shellcode_VirtualAlloc_Exec) - engine signal, weight 0.35, confidence 0.70
• YARA: Yara-Rules community flagged YR_Packer_ASPack_MPRESS (rule YR_Packer_ASPack_MPRESS) - engine signal, weight 0.35, confidence 0.70
• LIEF (executable format parser) flagged lief:invalid-authenticode (rule lief:invalid-authenticode) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: 6.0.1.0 - static signal, weight 0.35, confidence 0.60
• communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
• enumerate processes (rule enumerate processes) - capa signal, weight 0.20, confidence 0.60
• inject code into another process (rule inject code into another process) - capa signal, weight 0.12, confidence 0.60

Dynamic analysis

No runtime behaviour was captured for this sample, so the analysis above is static only. That is a limit of this run rather than evidence the sample does nothing.

Embedded URLs

• http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0
• http://www.microsoft.com/pki/certs/MicCodSigPCA_08-31-2010.crt0
• http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0T
• http://office.microsoft.com/0
• http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
• http://www.microsoft.com/pki/certs/MicTimStaPCA_2010-07-01.crt0
• http://www.digicert.com/ssl-cps-repository.htm0
• http://crl3.digicert.com/assured-cs-2011a.crl03
• http://crl4.digicert.com/assured-cs-2011a.crl0
• http://cacerts.digicert.com/DigiCertAssuredIDCodeSigningCA-1.crt0
• http://ts-aia.ws.symantec.com/tss-ca-g2.cer0
• http://ts-crl.ws.symantec.com/tss-ca-g2.crl0
• http://crl.thawte.com/ThawteTimestampingCA.crl0
• http://schemas.microsoft.com/SMI/2005/WindowsSettings
• http://office.microsoft.com
• http://www.microsoft.com/pki/certs/CSPCA.crt0
• http://www.microsoft.com/pki/certs/tspca.crt0

Embedded domains

• crl.microsoft.com
• www.microsoft.com
• office.microsoft.com
• www.digicert.com
• cacerts.digicert.com
• crl3.digicert.com
• crl4.digicert.com
• ts-aia.ws.symantec.com
• ts-crl.ws.symantec.com
• crl.thawte.com
• schemas.microsoft.com

Embedded IP addresses

• 6.0.1.0

Registry keys

• HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft

File paths

• c:\builds\moz2_slave\rel-m-rel-w32_bld-000000000000\build\obj-firefox\toolkit\crashreporter\client\crashreporter.pdb
• d:\dbs\el\oc\target\x86\ship\postc2r\x-none\clview.pdb
• U:\:
• L:\:l:u:
• X:\:`:d:h:l:p:t:x:
• X:\:d:l:
• X:\:`:h:l:p:t:x:
• X:\:`:d:
• C:\Program
• X:\:`:
• T:\:d:l:t:

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report