MALICIOUS — 43e3857780182e5311459a8355d46ddeb2b1163b85314e451111c14629a1e4e4
MALICIOUS — 43e3857780182e5311459a8355d46ddeb2b1163b85314e451111c14629a1e4e4 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Bulz family. 6 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.
Identification
- SHA-256:
43e3857780182e5311459a8355d46ddeb2b1163b85314e451111c14629a1e4e4 - SHA-1:
9534df12201301b369ea9125b10fc8b4adda5645 - MD5:
4058c5c6721d289d1418f3521f55020f - imphash:
f34d5f2d4577ed6d9ceec516c1f5a744 - ssdeep:
24576:dSOg8O3xzfadB3IisNBM/9/fwK/FTwfCBM0VZeg15:dNrO1ydB3IisNBk9/fw2BwfmM0fV - TLSH:
T1A8568D99120AFB41F1B69B402C902E1CE07AF5FE25BF28CC5652C42FABF5D6774184A4 - Submitted as: 43e3857780182e5311459a8355d46ddeb2b1163b85314e451111c14629a1e4e4
- File type: pe · Size: 1343053 bytes
- Verdict: malicious (99/100) · Family: Bulz
Detections (6 of 55 engines)
- YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
- capa (capabilities): capability:collection/keylog
- ClamAV (daily): Win.Trojan.Bulz-9889567-0
- YARA: MalwareAnalyser community pack: TL_Shellcode_VirtualAlloc_Exec
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Microsoft Defender: Trojan:Win32/Wacatac.C!ml
MITRE ATT&CK
YARA
- Windows_Injection_Api_Combo
Why this verdict
The malicious score of 99/100 is the fusion of 9 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 - capture keystrokes (rule
capture keystrokes) - capa signal, weight 0.40, confidence 0.80 - Contacted 21 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- 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_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: 5.1.131.0 - static signal, weight 0.35, 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 (windows)
325 behavior events · 0 ATT&CK techniques · 0 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- settings-win.data.microsoft.com
- www.msn.com
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://office.microsoft.com
- http://www.msftconnecttest.com/connecttest.txt
- http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
- http://rb.symcb.com/rb.crl
- http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787799357&P2=404&P3=2&P4=ToZkdVGj9AZO6zvOORQYeXDEbEjV64sMDQEVN4Svr9PEiY%2bds2Tk7On1HGPUFcEIXnmvkM5sfMxjA2iTdXYpXw%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787799414&P2=404&P3=2&P4=choQ4valc%2fYW7QxbQowmykTZ1uEifYaaN%2fkGCVgj5lBOIz7DspNmT7DkPVKnI7PkMcOCFzi55WLlSCt9w%2f%2ftrA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- crl.microsoft.com
- www.microsoft.com
- office.microsoft.com
Embedded IP addresses
- 5.1.131.0
- 4.150.223.114
- 52.123.252.246
- 85.210.196.11
- 4.230.171.124
- 52.253.84.76
- 52.123.252.215
- 74.178.240.61
- 135.232.92.97
- 13.89.179.12
- 20.76.201.171
- 52.123.128.14
- 20.184.175.13
- 203.26.79.13
- 52.123.252.238
- 74.178.76.44
- 135.233.45.221
- 52.168.117.175
- 52.148.114.188
- 72.154.7.103
- 52.110.12.3
- 52.110.12.54
File paths
- 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:
- F:\Office\Target\x86\ship\postc2r\x-none\msqry32.pdb
- H:\:c:
- W:\:l:
- T:\:a:i:n:v:{:
- X:\:l:p:t:x:
More Bulz samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report