General

  • Target

    main1.bat

  • Size

    15KB

  • Sample

    241122-a5w3ja1jgw

  • MD5

    837e6e693eab2459822a681dd8829347

  • SHA1

    77417d665e66ae2f962f52b3d7c916f0772f0615

  • SHA256

    57970a3c842bcaf6860a9d271b2725b08fc07a50ca18ff852983d8e80905a0c7

  • SHA512

    54f3d0f4a69d785dd6012f5376d131f3d4cdfa1885577c46468bf1e37aed1d7da86cc11b7efcddf53eede8a4803a16e14c008493404906e3b870ccd441278a48

  • SSDEEP

    384:wK1+KSlKC8kumFq/vM2pHz6YBM3P6QDSJO4ytvJ2/N2cGTuEhckk7VgFHbWvaPn0:wK1+KSlKC8++vM23b+CJXPn

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

bot

C2

wooting2000-47095.portmap.host:47095

Mutex

2e05f1ef-743b-4020-b18a-7f4276517e8b

Attributes
  • encryption_key

    E83D6FC31962786DAEA703F111D2381786DF06CA

  • install_name

    Modification1.5.14.12.exe

  • log_directory

    Logs

  • reconnect_delay

    3126

  • startup_key

    explorer.dll

  • subdirectory

    SubDir

Targets

    • Target

      main1.bat

    • Size

      15KB

    • MD5

      837e6e693eab2459822a681dd8829347

    • SHA1

      77417d665e66ae2f962f52b3d7c916f0772f0615

    • SHA256

      57970a3c842bcaf6860a9d271b2725b08fc07a50ca18ff852983d8e80905a0c7

    • SHA512

      54f3d0f4a69d785dd6012f5376d131f3d4cdfa1885577c46468bf1e37aed1d7da86cc11b7efcddf53eede8a4803a16e14c008493404906e3b870ccd441278a48

    • SSDEEP

      384:wK1+KSlKC8kumFq/vM2pHz6YBM3P6QDSJO4ytvJ2/N2cGTuEhckk7VgFHbWvaPn0:wK1+KSlKC8++vM23b+CJXPn

    • Quasar RAT

      Quasar is an open source Remote Access Tool.

    • Quasar family

    • Quasar payload

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Powershell Invoke Web Request.

    • Downloads MZ/PE file

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Executes dropped EXE

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Enterprise v15

Tasks