MALICIOUS — 83f93990620da956fffe203a2b77fd2c251764a25ec118aabc4490720ac0e8ad

MALICIOUS — 83f93990620da956fffe203a2b77fd2c251764a25ec118aabc4490720ac0e8ad is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (97/100), attributed to the Pidgeon family. 10 of 52 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 83f93990620da956fffe203a2b77fd2c251764a25ec118aabc4490720ac0e8ad
• SHA-1: 60d29b66bd8fc19c5a6b1929b7e78e9350b908d5
• MD5: 7e614d5de1c4580fe4002dcc842e1b7e
• imphash: 01392ca861cf87b8d28ad9ea90016bb4
• ssdeep: 49152:fPiR4BakOElMaFLkDydB3I2PiR4BakOElMaFLkDydB3I:1ak76WCcak76WC
• TLSH: T1DC609D899216F70BE3F1DA511C408D5C9061BAFD21BF28CD56C2C86E66EAC37A1540EF
• Submitted as: 83f93990620da956fffe203a2b77fd2c251764a25ec118aabc4490720ac0e8ad
• File type: pe · Size: 3520105 bytes
• Verdict: malicious (97/100) · Family: Pidgeon

Detections (10 of 52 engines)

• capa (capabilities): capability:collection/keylog
• MalwareAnalyser heuristics (entropy/packer): ASPack
• ClamAV (daily): Win.Packed.Pidgeon-9909600-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• YARA: Yara-Rules community: YR_Packer_ASPack_MPRESS
• Detect It Easy (packer/type): DIE:Microsoft Linker
• Microsoft Defender: flagged
• Emsisoft (Emergency Kit): Gen:Heur.Mint.Autorunner.1
• Trellix Stinger (McAfee): W32/Worm-GBW!7E614D5DE1C4
• Kaspersky (KVRT): Worm.Win32.AutoRun.vx

MITRE ATT&CK

• T1071.001
• T1056.001

Why this verdict

The malicious score of 97/100 is the fusion of 8 weighted signals:

• ClamAV (daily) flagged Win.Packed.Pidgeon-9909600-0 (rule Win.Packed.Pidgeon-9909600-0) - engine signal, weight 0.90, confidence 0.95
• 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: Yara-Rules community flagged YR_Packer_ASPack_MPRESS (rule YR_Packer_ASPack_MPRESS) - engine signal, weight 0.35, confidence 0.70
• Detect It Easy (packer/type) flagged DIE:Microsoft Linker (rule DIE:Microsoft Linker) - engine signal, weight 0.35, confidence 0.70
• Embedded network infrastructure: http://nsis.sf.net/NSIS_Error, 5.1.131.0 - static signal, weight 0.35, confidence 0.60
• communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
• Packing/obfuscation: ASPack, high-entropy-sections:.text, Microsoft Linker - static signal, weight 0.25, confidence 0.55

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://nsis.sf.net/NSIS_Error
• 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/windows/2004/02/mit/task
• http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
• http://www.microsoft.com/windows0
• http://www.microsoft.com/pki/certs/MicTimStaPCA_2010-07-01.crt0
• 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

Embedded domains

• nsis.sf.net
• 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
• www.microsoft.com
• crl.microsoft.com
• office.microsoft.com
• settings-win.data.microsoft.com

Embedded IP addresses

• 5.1.131.0

File paths

• C:\Windows\system32\sc.exe
• F:\Office\Target\x86\ship\postc2r\x-none\orgchart.pdb
• L:\:o:z:
• V:\:r:x:
• N:\:i:f;~;
• V:\:b:h:n:t:z:
• C:\btvsts\3783\private\softgrid\shared\include\shared\file_utils.hpp
• T:\:d:l:t:
• X:\:`:d:h:l:p:t:x:
• X:\:`:h:
• L:\:h:p:

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report