bazarbackdoor

Target

230823-139hyshd3w_pw_infected.zip
Size

472KB
Sample

240814-ag3keaxarl
MD5

e3af7d1463d266e02cd03ea7a3add2e4
SHA1

6456c0de00c86db5e7d061fbf7e19792d3dbbc4a
SHA256

8ef176944e54df85db028979ceb66b2b6e807b1615f4254c273d4b433caec0dd
SHA512

855e4ba5316a800113f6f410d37ba7e981c0f72bb23664c26e464777f2a0a96d8f651e77189af89e70be9d032a3a1b7b40b005bd60b9f6dc792c7588b3a8d9bb
SSDEEP

12288:ABgmK1z0D2TuzS4cu2LH6WhBO8RiKrDmlPPoSdERZIhp4TWo3:2BKqSt4AH6Whc2fqPoSdEDRWo3

Malware Config

Extracted

Family

crimsonrat

185.136.161.124

Extracted

Family

metasploit

Version

windows/download_exec

http://149.129.72.37:23456/SNpK

Attributes

headers User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0; NP09; NP09; MAAU)

Targets

- Target
  
  dl2.exe
- Size
  
  849KB
- MD5
  
  c2055b7fbaa041d9f68b9d5df9b45edd
- SHA1
  
  e4bd443bd4ce9029290dcd4bb47cb1a01f3b1b06
- SHA256
  
  342f04c4720590c40d24078d46d9b19d8175565f0af460598171d58f5ffc48f3
- SHA512
  
  18905b75938b8af9468b1aa3ffbae796a139c2762e623aa6ffb9ec2b293dd04aa1f90d1ed5a7dbda7853795a3688e368121a134c7f63e527a8e5e7679301a1dc
- SSDEEP
  
  12288:A3RY3yNqMRTF4q2rxHn2ot/81xpNQyjUXlmoe7ufjHAtjXD7r2:A3RY3R24q+xn/8Xp2yOl5fzQ/2
Score

10^/10

bazarbackdoor crimsonrat darkcomet metasploit revengerat rms agilenet backdoor defense_evasion discovery evasion execution lateral_movement persistence privilege_escalation ransomware rat rezer0 stealer trojan upx
- BazarBackdoor
  Stealthy backdoor targeting corporate networks, believed to be developed by Trickbot's authors.
  backdoor bazarbackdoor
- CrimsonRAT main payload
- CrimsonRat
  Crimson RAT is a malware linked to a Pakistani-linked threat actor.
  rat crimsonrat
- Darkcomet
  DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
  trojan rat darkcomet
- MetaSploit
  Detected malicious payload which is part of the Metasploit Framework, likely generated with msfvenom or similar.
  trojan backdoor metasploit
- Modifies WinLogon for persistence
  persistence
- Process spawned unexpected child process
  This typically indicates the parent process was compromised via an exploit or macro.
- RMS
  Remote Manipulator System (RMS) is a remote access tool developed by Russian organization TektonIT.
  trojan rat rms
- RevengeRAT
  Remote-access trojan with a wide range of capabilities.
  trojan revengerat
- Grants admin privileges
  Uses net.exe to modify the user's privileges.
- Modifies boot configuration data using bcdedit
  ransomware evasion
- ReZer0 packer
  Detects ReZer0, a packer with multiple versions used in various campaigns.
  rezer0
- Remote Service Session Hijacking: RDP Hijacking
  Adversaries may hijack a legitimate user's remote desktop session to move laterally within an environment.
  lateral_movement
- RevengeRat Executable
  stealer
- Blocklisted process makes network request
- Downloads MZ/PE file
- Enables test signing to bypass driver trust controls
  Allows any signed driver to load without validation against a trusted certificate authority.
  defense_evasion
- Modifies Windows Firewall
  evasion
- Sets file to hidden
  Modifies file attributes to stop it showing in Explorer etc.
  evasion
- Stops running service(s)
  evasion execution
- Tries to connect to .bazar domain
  Attempts to lookup or connect to a .bazar domain, used by BazarBackdoor, Trickbot, and potentially others.
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Drops startup file
- Executes dropped EXE
- Modifies file permissions
  discovery
- Obfuscated with Agile.Net obfuscator
  Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.
  agilenet
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Unexpected DNS network traffic destination
  Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Uses the VBS compiler for execution
- Adds Run key to start application
  persistence
- Command and Scripting Interpreter: PowerShell
  Using powershell.exe command.
  execution
- Indicator Removal: Clear Persistence
  Clear artifacts associated with previously established persistence like scheduletasks on a host.
  defense_evasion
- Legitimate hosting services abused for malware hosting/C2
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Password Policy Discovery
  Attempt to access detailed information about the password policy used within an enterprise network.
  discovery
- AutoIT Executable
  AutoIT scripts compiled to PE executables.
- Drops file in System32 directory
behavioral1 behavioral2