Overview

overview

10

Static

static

10

decrypted.exe

windows7-x64

10

decrypted.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    decrypted.zip

  • Size

    15KB

  • Sample

    230202-w7zgbsfc5s

  • MD5

    0a6616ab6ee90e7be6c212b63242cd64

  • SHA1

    08b04ebd56a22823bc54111b5567dd40d1825e05

  • SHA256

    3ff4956f284c2d0b5a1c8b32e1b73977f05508a814aae92e5aa7919aaf0b3e10

  • SHA512

    8963342463806b4545779cb3616fd616d07d18123f64759f4bb76cc2f8064dc8463fbc88330b354f329c396858d87222ee8ee41abd98310d5df66f43ed146fbc

  • SSDEEP

    384:IaLZLBGtvBdaVRV3VQBdc0/Vv/wa65/Pg52LoTY/WTo+1ysU9OiC:IaLutZAgz7/wv5Hg520To+1yNOZ

Score
10/10
asyncratnjratdefaultevasionpersistencerattrojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

virtual-rome.at.ply.gg:1111

virtual-rome.at.ply.gg:62832
Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    Windows Critical Update.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      decrypted.exe

    • Size

      36KB

    • MD5

      804457c473500f8fe0d57b0864c4c87f

    • SHA1

      633c8ff70bc17c12e2727c3e1278349a8b67fe50

    • SHA256

      601ac6852746a608f82af16fe69b07a5c65afc584d59479a8fcf43bd0537997f

    • SHA512

      f68e765f26d6ff16a4f2a89f367e0cf57278a595f321a362c8b037526106dc319cd6894b4def3d1aa474ce412db0395926e7483d26abca72e196f4eac97247d9

    • SSDEEP

      768:C9S2Mfp8Y8JuL8O2qD86BhEOaDUeKR0F6Ehq5lxOBcmZPtqojC:C9S2MfgQQahEOaDUzRb5lxOWmyl

    Score
    10/10
    asyncratnjratdefaultevasionpersistencerattrojan

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers.

      ratasyncrat

    • njRAT/Bladabindi

      Widely used RAT written in .NET.

      trojannjrat

    • Async RAT payload

      rat

    • Modifies Windows Firewall

      evasion

    • Checks computer location settings

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

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

1
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Exfiltration

Command and Control

Impact

Tasks