MALICIOUS — 6983c98760a84404895edbba4bce622b4c9f10cb1780cfee25b1282c3aa82ee2
MALICIOUS — 6983c98760a84404895edbba4bce622b4c9f10cb1780cfee25b1282c3aa82ee2 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Bulz family. 8 of 55 detection engines flagged it, exhibiting 6 ATT&CK techniques.
Identification
- SHA-256:
6983c98760a84404895edbba4bce622b4c9f10cb1780cfee25b1282c3aa82ee2 - SHA-1:
778a654bfd018291ea50d3a0cb14448461d02b87 - MD5:
aedc8e84c7d24769cc3e967349e81d52 - imphash:
4237acd5d4d4c9a98a443ba83a0bc7f8 - ssdeep:
3072:cTXDAERVH8R11GTh28jGRuO+dxGQiHnejo5Sq3AOU:cTTAERVHW1228j4uO+jxo5AOU - TLSH:
T132406DB09321B145F2F6EE6668D08D8D90123B7EB0B65DDE4343C72B94E5C33A4E914A - Submitted as: 6983c98760a84404895edbba4bce622b4c9f10cb1780cfee25b1282c3aa82ee2
- File type: pe · Size: 164352 bytes
- Verdict: malicious (100/100) · Family: Bulz
Detections (8 of 55 engines)
- YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
- ClamAV (daily): Win.Malware.Bulz-9854497-0
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- YARA: MalwareAnalyser community pack: TL_Shellcode_VirtualAlloc_Exec
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Microsoft Defender: Trojan:Win64/Latot!pz
- Emsisoft (Emergency Kit): Generic.Dacic.4874.6C349BEE
- Kaspersky (KVRT): HEUR:Trojan-Spy.Win32.Screenshoter.gen
MITRE ATT&CK
YARA
- Windows_Injection_Api_Combo
Why this verdict
The malicious score of 100/100 is the fusion of 13 weighted signals:
- ClamAV (daily) flagged Win.Malware.Bulz-9854497-0 (rule
Win.Malware.Bulz-9854497-0) - 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 - 1 behavioral detection(s): Defense Evasion: disable AV / Defender [high] (rule
tl-defender-tamper) - dynamic signal, weight 0.60, confidence 0.90 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 24 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
- 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_AntiDebug_Checks (rule
YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70 - enumerate processes (rule
enumerate processes) - capa signal, weight 0.20, confidence 0.60 - Dropped 2 executable file(s) at runtime - dynamic signal, weight 0.20, 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)
44468 behavior events · 2 ATT&CK techniques · 3 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
- licensing.mp.microsoft.com
- windows.msn.com
- msedge.api.cdp.microsoft.com
- oneocsp.microsoft.com
Dropped files
- C:\Windows\SysWOW64\maxsvc32.dll -
4e24b7cbaf955b492a3cdfd9e957a5598422c0edeefb6d43e367304ba20a62d9 - C:\Windows\SysWOW64\insvc32.exe -
092f1d112fe7e7e9b4661be993e96a17f8d89efd946900c7046f076c90807e8d - 5348bc31e1fa328535981697da27d399b8888e1ec1a7fac2f39b894670b2e043 -
5348bc31e1fa328535981697da27d399b8888e1ec1a7fac2f39b894670b2e043
Embedded URLs
- 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=1787808936&P2=404&P3=2&P4=g%2baTfK9ch09Nb6DhuGTfoe5Q%2fMRfVvAhOZJcrSZ6nBT3gRbkq3er9ivlhcGP4Gs6yjUt8bH4qodFkJU6JJTupg%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=1787809009&P2=404&P3=2&P4=lIMx8Rlk%2bnQp3NsH2zl2OtDGUiX5cmIlPaAwk3S%2feJNWNZmPnCKHMOsQicE8lb8Uy%2fBvfblHbr%2f5rKOdr9BBQA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 4.150.223.115
- 20.247.184.142
- 172.215.188.232
- 135.233.95.80
- 135.233.95.144
- 20.184.175.4
- 20.165.94.54
- 203.26.79.13
- 20.184.175.22
- 52.123.129.14
- 20.236.44.162
- 52.123.128.14
- 207.148.97.227
- 4.230.171.124
- 135.233.45.221
- 52.110.12.48
- 52.148.114.188
- 52.110.12.14
- 135.234.160.246
- 125.56.205.114
- 125.56.205.51
- 72.154.7.109
- 40.79.163.154
- 52.110.12.37
More Bulz samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report