njrat | 10749906bc204c15934fdba1c3c5bb113156aadacd47d8609a3e543620f05c9a

General

Target

VIR Virus.zip
Size

295.2MB
Sample

240528-1h2bvadd2x
MD5

4568557191778f07e87931a3cb8bb19f
SHA1

2de50b104aaa20166ac4a5ca54ffa2f7a10967ff
SHA256

10749906bc204c15934fdba1c3c5bb113156aadacd47d8609a3e543620f05c9a
SHA512

e29c43a141e5b83bb83bbb2cb86ce7b2b100163e1ec5557522cf4b6c5d2e83066539b4359f0adce282517300d5ce988e7c7f88a03b8d984c303a49033b915d6c
SSDEEP

6291456:iw1tbMVOw5GAdBLYWk8KmMzMr+Z3NaUSCs5rTZ/eLRl5:i8QhooYQKtzMr+ZdG/Y

Score

10^/10

Malware Config

Extracted

Family

quasar

Attributes

reconnect_delay
3000

Extracted

Family

quasar

Version

1.4.1

Botnet

romka

C2

jozzu420-51305.portmap.host:51305

Mutex

0445c342-b551-411c-9b80-cd437437f491

Attributes

encryption_key
E1BF1D99459F04CAF668F054744BC2C514B0A3D6
install_name
Romilyaa.exe
log_directory
Logs
reconnect_delay
3000
startup_key
Windows 10 Boot
subdirectory
SubDir

Targets

- Target
  
  VIR Virus.zip
- Size
  
  295.2MB
- MD5
  
  4568557191778f07e87931a3cb8bb19f
- SHA1
  
  2de50b104aaa20166ac4a5ca54ffa2f7a10967ff
- SHA256
  
  10749906bc204c15934fdba1c3c5bb113156aadacd47d8609a3e543620f05c9a
- SHA512
  
  e29c43a141e5b83bb83bbb2cb86ce7b2b100163e1ec5557522cf4b6c5d2e83066539b4359f0adce282517300d5ce988e7c7f88a03b8d984c303a49033b915d6c
- SSDEEP
  
  6291456:iw1tbMVOw5GAdBLYWk8KmMzMr+Z3NaUSCs5rTZ/eLRl5:i8QhooYQKtzMr+ZdG/Y
Score

10^/10

privateloader quasar umbral romka bootkit discovery evasion execution exploit loader persistence ransomware spyware stealer trojan upx
- Detect Umbral payload
- Modifies WinLogon for persistence
  persistence
- Modifies firewall policy service
  evasion
- PrivateLoader
  PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
  loader privateloader
- Quasar RAT
  Quasar is an open source Remote Access Tool.
  trojan spyware quasar
- Quasar payload
- UAC bypass
  evasion trojan
- Umbral
  Umbral stealer is an opensource moduler stealer written in C#.
  stealer umbral
- Windows security bypass
  evasion trojan
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
  evasion
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
  Using powershell.exe command.
  execution
- Downloads MZ/PE file
- Manipulates Digital Signatures
  Attackers can apply techniques such as changing the registry keys of authenticode & Cryptography to obtain their binary as valid.
- Modifies Windows Firewall
  evasion
- Possible privilege escalation attempt
  exploit
- .NET Reactor proctector
  Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
- Checks BIOS information in registry
  BIOS information is often read in order to detect sandboxing environments.
- Drops startup file
- Executes dropped EXE
- Loads dropped DLL
- Modifies file permissions
  discovery
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Windows security modification
  evasion trojan
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Checks whether UAC is enabled
  evasion trojan
- 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.
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- AutoIT Executable
  AutoIT scripts compiled to PE executables.
- Drops file in System32 directory
- Sets desktop wallpaper using registry
  ransomware
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
behavioral1
- Target
  
  vir.exe
- Size
  
  336.1MB
- MD5
  
  bc82ea785da1180a8a964b3e54ad106c
- SHA1
  
  4c1952ce778455af8ed10dca7b9f77d7815e8d0a
- SHA256
  
  c283ed662a29c18b117ba63ac41cca356934c6a29a1eb66e30d8305637e3411b
- SHA512
  
  62bf34d75e913a47185664a34555678d0b8c2cf03c9e922b0bdcb085713322bafba2bf396b43a4cda7e0be6d315aea027bba29c628fe561d01e3026b4e0b405b
- SSDEEP
  
  6291456:72qVJw+odBeWFv1k4R4b0ewZkhT4ofHwJjvZDQPf2tLSkHZdHVeVF0oJ:yr+WeSWgfecGT4RjvqP85/A33
Score

10^/10

njrat privateloader quasar umbral romka bootkit discovery evasion execution loader persistence ransomware spyware stealer trojan upx
- Detect Umbral payload
- Modifies firewall policy service
  evasion
- PrivateLoader
  PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
  loader privateloader
- Quasar RAT
  Quasar is an open source Remote Access Tool.
  trojan spyware quasar
- Quasar payload
- UAC bypass
  evasion trojan
- Umbral
  Umbral stealer is an opensource moduler stealer written in C#.
  stealer umbral
- Windows security bypass
  evasion trojan
- njRAT/Bladabindi
  Widely used RAT written in .NET.
  trojan njrat
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
  evasion
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
  Run Powershell and hide display window.
  execution
- Downloads MZ/PE file
- .NET Reactor proctector
  Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.
- Checks BIOS information in registry
  BIOS information is often read in order to detect sandboxing environments.
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Drops startup file
- Executes dropped EXE
- Loads dropped DLL
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- UPX packed file
  Detects executables packed with UPX/modified UPX open source packer.
  upx
- Windows security modification
  evasion trojan
- Checks installed software on the system
  Looks up Uninstall key entries in the registry to enumerate software on the system.
  discovery
- Checks whether UAC is enabled
  evasion trojan
- Drops Chrome extension
- Drops desktop.ini file(s)
- 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.
- Writes to the Master Boot Record (MBR)
  Bootkits write to the MBR to gain persistence at a level below the operating system.
  bootkit persistence
- AutoIT Executable
  AutoIT scripts compiled to PE executables.
- Drops file in System32 directory
- Sets desktop wallpaper using registry
  ransomware
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
behavioral2