quasar | f1946c208e4a8f7428f97e8e40f31ffa95885b61571dc4ab9ba6a3356336fc12

General

Target

f1946c208e4a8f7428f97e8e40f31ffa95885b61571dc4ab9ba6a3356336fc12
Size

12.8MB
Sample

221130-v3arqsah45
MD5

1c1cd3ee6e73a4e599c7c32bae300b05
SHA1

dd22b9c9531efdecd80d37b01254e96728ef26c3
SHA256

f1946c208e4a8f7428f97e8e40f31ffa95885b61571dc4ab9ba6a3356336fc12
SHA512

484ab45694f4789a8f385dd6346c2711d8b79368760819065592163f763a8724c91993fbc0bfbf58ce0c1d0f7d9132f9b59a99645790e4e68ece6650b99cd037
SSDEEP

393216:IY/d0T2My8oDotr3LItcM4epPOgmYQbml1ay:IYeqvE1Sd/WmSy

Score

10^/10

Malware Config

Extracted

Family

quasar

Version

2.1.0.0

Botnet

greedens

C2

127.0.0.1:4782

Mutex

VNM_MUTEX_7DOOh0yZCLxX4Y4Ltu

Attributes

encryption_key
ZSBFYPSY9jJS688RgNV6
install_name
$77setup.exe
log_directory
gameboard
reconnect_delay
3000
startup_key
drivers
subdirectory
$77

Targets

- Target
  
  f1946c208e4a8f7428f97e8e40f31ffa95885b61571dc4ab9ba6a3356336fc12
- Size
  
  12.8MB
- MD5
  
  1c1cd3ee6e73a4e599c7c32bae300b05
- SHA1
  
  dd22b9c9531efdecd80d37b01254e96728ef26c3
- SHA256
  
  f1946c208e4a8f7428f97e8e40f31ffa95885b61571dc4ab9ba6a3356336fc12
- SHA512
  
  484ab45694f4789a8f385dd6346c2711d8b79368760819065592163f763a8724c91993fbc0bfbf58ce0c1d0f7d9132f9b59a99645790e4e68ece6650b99cd037
- SSDEEP
  
  393216:IY/d0T2My8oDotr3LItcM4epPOgmYQbml1ay:IYeqvE1Sd/WmSy
Score

10^/10

quasar venomrat greedens evasion persistence rat rootkit spyware stealer themida trojan
- Contains code to disable Windows Defender
  A .NET executable tasked with disabling Windows Defender capabilities such as realtime monitoring, blocking at first seen, etc.
- Modifies Windows Defender Real-time Protection settings
  evasion trojan
- Quasar RAT
  Quasar is an open source Remote Access Tool.
  trojan spyware quasar
- Quasar payload
- VenomRAT
  VenomRAT is a modified version of QuasarRAT with some added features, such as rootkit and stealer capabilites.
  rat rootkit stealer venomrat
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
  evasion
- Executes dropped EXE
- 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.
- Deletes itself
- Loads dropped DLL
- Themida packer
  Detects Themida, an advanced Windows software protection system.
  themida
- Windows security modification
  evasion trojan
- Adds Run key to start application
  persistence
- Checks whether UAC is enabled
  evasion trojan
- Looks up external IP address via web service
  Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory
- Suspicious use of NtSetInformationThreadHideFromDebugger
behavioral1 behavioral2