MALICIOUS — 3aa31049337404bd038772db2a6dbf0d868ff000de3754407a37fb0762458e15
MALICIOUS — 3aa31049337404bd038772db2a6dbf0d868ff000de3754407a37fb0762458e15 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Bulz family. 7 of 56 detection engines flagged it, exhibiting 5 ATT&CK techniques.
Identification
- SHA-256:
3aa31049337404bd038772db2a6dbf0d868ff000de3754407a37fb0762458e15 - SHA-1:
8f1ccbee1f00fe30284094e3d167f471a9ba78e9 - MD5:
61d266aed751c526864c020ac2da9b7b - imphash:
f34d5f2d4577ed6d9ceec516c1f5a744 - ssdeep:
49152:dN/lj6sNBk9/fw2BwfmM0fPoJdXN0BMOwLloBrugPWWhipXq:dNwsNi9XwgwfoIJdXN0B7+sco - TLSH:
T1035DAEC8061BB701E2B6EB546C501E5CA036F1E974BB29CC2743C97F99E3D73A4A4069 - Submitted as: 3aa31049337404bd038772db2a6dbf0d868ff000de3754407a37fb0762458e15
- File type: pe · Size: 2789740 bytes
- Verdict: malicious (100/100) · Family: Bulz
Detections (7 of 56 engines)
- YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
- capa (capabilities): capability:collection/keylog
- ClamAV (daily): Win.Trojan.Bulz-9889567-0
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- YARA: MalwareAnalyser community pack: TL_Shellcode_VirtualAlloc_Exec
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Microsoft Defender: Program:Win32/Wacapew.C!ml
MITRE ATT&CK
YARA
- Windows_Injection_Api_Combo
Why this verdict
The malicious score of 100/100 is the fusion of 17 weighted signals:
- ClamAV (daily) flagged Win.Trojan.Bulz-9889567-0 (rule
Win.Trojan.Bulz-9889567-0) - 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 - Microsoft Defender flagged Program:Win32/Wacapew.C!ml (rule
Program:Win32/Wacapew.C!ml) - engine signal, weight 0.55, confidence 0.85 - YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70 - 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 - capture keystrokes (rule
capture keystrokes) - capa signal, weight 0.40, confidence 0.80 - Contacted 5 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1082, T1497 - dynamic signal, weight 0.40, confidence 0.75
- YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - YARA: MalwareAnalyser built-in flagged Windows_Injection_Api_Combo (rule
Windows_Injection_Api_Combo) - engine signal, weight 0.35, confidence 0.70 - capa (capabilities) flagged capability:collection/keylog (rule
capability:collection/keylog) - 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 0.30, confidence 0.70 - Embedded network infrastructure: https://services.acrobat.com, https://services.acrobat.com/account/wsapi/, https://v2.services.acrobat.com - static signal, weight 0.35, confidence 0.60
- communicate over HTTP (rule
communicate over HTTP) - capa signal, weight 0.30, confidence 0.60 - Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90 - inject code into another process (rule
inject code into another process) - capa signal, weight 0.12, confidence 0.60
Dynamic analysis (windows)
48940 behavior events · 2 ATT&CK techniques · 3 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- ctldl.windowsupdate.com
- update.googleapis.com
- login.live.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- www.msn.com
- officeclient.microsoft.com
- odc.officeapps.live.com
- settings-win.data.microsoft.com
- licensing.mp.microsoft.com
- assets.msn.com
- www.bing.com
- th.bing.com
- fe3cr.delivery.mp.microsoft.com
Dropped files
- C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_tsk_e24d2aad8b0d_94d7f578ad328b4ce4ae5c1fbe79339f8523f5_00000000_f18bc8a7-c83f-47b6-b95a-3ba46f15bab2\Report.wer -
ff21ddffe85c3423b971e74eda975ff1f7bca92fbde27876b3afbc5af84ad7ed - d597c55c4de218daf60244749eb8ef52714cdf2b7a5612db019b06eb917f50cd -
d597c55c4de218daf60244749eb8ef52714cdf2b7a5612db019b06eb917f50cd - 1e1dccd1a2d1780f4ff65304d97a523a794e245964ce771e3d5f5e2fd0283fe3 -
1e1dccd1a2d1780f4ff65304d97a523a794e245964ce771e3d5f5e2fd0283fe3
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://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
- http://www.microsoft.com/pki/certs/MicTimStaPCA_2010-07-01.crt0
- http://office.microsoft.com
- https://services.acrobat.com
- https://services.acrobat.com/account/wsapi/
- https://v2.services.acrobat.com
- https://tob.acrobat.com/TOB/
- https://api.share.acrobat.com
- https://api.share.acrobat.com/webservices/api/v1/
- https://createpdf.acrobat.com
- https://api2.acrobat.com/webservices
- https://v2.services.acrobat.com/
- https://api2.acrobat.com
- http://ns.adobe.com/Acrobat/RSS/Inbox/feedUI
- http://ns.adobe.com/Acrobat/RSS/Inbox/icon
- http://ns.adobe.com/Acrobat/RSS/Reviews/deadline
- http://ns.adobe.com/synchronizer/ttl
- http://ns.adobe.com/synchronizer/dependency
- http://www.w3.org/2005/Atom
- http://purl.org/atom/ns#
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://www.w3.org/2005/Atommodifled
Embedded domains
- crl.microsoft.com
- www.microsoft.com
- office.microsoft.com
- u.jp
- services.acrobat.com
- v2.services.acrobat.com
- tob.acrobat.com
- api.share.acrobat.com
- createpdf.acrobat.com
- api2.acrobat.com
- ns.adobe.com
- www.w3.org
- purl.org
- crl.thawte.com
- ts-aia.ws.symantec.com
- ts-crl.ws.symantec.com
- crl.verisign.com
- www.verisign.com
- logo.verisign.com
- www.symauth.com
- evcs-crl.ws.symantec.com
- evcs-aia.ws.symantec.com
- schemas.microsoft.com
Embedded IP addresses
- 52.168.117.175
- 52.123.252.226
- 4.144.132.223
- 4.230.171.124
- 40.84.85.40
- 74.179.77.164
- 20.184.175.13
- 74.179.77.204
- 172.64.154.167
- 135.233.45.222
- 52.110.12.54
- 52.110.12.46
File paths
- C:\btvsts\3481\private\softgrid\shared\include\command_line_cleaner.hpp
- T:\:d:l:t:
- X:\:`:d:h:l:p:t:x:
- T:\:h:
- F:\Office\Target\x86\ship\postc2r\x-none\msqry32.pdb
- H:\:c:
- W:\:l:
- T:\:a:i:n:v:{:
- X:\:l:p:t:x:
- X:\:x:
- X:\:`:d:h:l:p:t:
- X:\:l:p:
- H:\:d:l:
More Bulz samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report