Overview

overview

10

Static

static

3

f9235b9b51...18.exe

windows7-x64

10

f9235b9b51...18.exe

windows10-2004-x64

10

$PLUGINSDI...cu.dll

windows7-x64

10

$PLUGINSDI...cu.dll

windows10-2004-x64

1

Sharing

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General

  • Target

    f9235b9b51702c123e3b6c8c7dafaad1_JaffaCakes118

  • Size

    312KB

  • Sample

    240419-a7hypacg3y

  • MD5

    f9235b9b51702c123e3b6c8c7dafaad1

  • SHA1

    9e5867039896c5d1e5f06185dc0eeb9d4a53ac5a

  • SHA256

    5f2ff12584a99c9720d27bf219ec4691f80ea258d71e391ca28f4590f360a775

  • SHA512

    a21857672861bbaff86a5cedb9cc04df4f05a9a948135336849b6d8f2112da85de2a0b71de7e75dad7ddc66b4a80dfb53094ea91650f2e2ba96b9db13f77ba0b

  • SSDEEP

    6144:wBlL/cYcRhkSQU1DHVOnYBYJal4j9Rz/7R/Ug5X1tZaDTcoe:CelhMtYBYsWjLz/9vtUTcT

Score
10/10
asyncratdefaultrat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

tinrinrin.kozow.com:9091

Mutex

AsyncMutex_6SI8OkPnk

Attributes
  • delay

    3

  • install

    true

  • install_file

    Edge.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      f9235b9b51702c123e3b6c8c7dafaad1_JaffaCakes118

    • Size

      312KB

    • MD5

      f9235b9b51702c123e3b6c8c7dafaad1

    • SHA1

      9e5867039896c5d1e5f06185dc0eeb9d4a53ac5a

    • SHA256

      5f2ff12584a99c9720d27bf219ec4691f80ea258d71e391ca28f4590f360a775

    • SHA512

      a21857672861bbaff86a5cedb9cc04df4f05a9a948135336849b6d8f2112da85de2a0b71de7e75dad7ddc66b4a80dfb53094ea91650f2e2ba96b9db13f77ba0b

    • SSDEEP

      6144:wBlL/cYcRhkSQU1DHVOnYBYJal4j9Rz/7R/Ug5X1tZaDTcoe:CelhMtYBYsWjLz/9vtUTcT

    Score
    10/10
    asyncratdefaultrat

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

      ratasyncrat

    • Async RAT payload

      rat

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

    • Target

      $PLUGINSDIR/vzjtdshtcu.dll

    • Size

      29KB

    • MD5

      433747be519bda968dfcb35f6970fa5b

    • SHA1

      faaea3969400d0302544ad4fd9cb031b7637936f

    • SHA256

      5d362cfb794eebda011289c7ffaf328b9537e87dca13e79d60508773b538f6c6

    • SHA512

      6a97c1f265546f71910bad5465c767314ed97e2246363e25077471db1a5cfdd92a56b1da02e8620775fdbc8a231636f147c6e66c781b38f03fe05b3da256530a

    • SSDEEP

      768:M2TzWszi/+6IQBM9x22OgNDiSn1n4RT1:MmnzvPQBM9x2ZSnKR

    Score
    10/10
    asyncratdefaultrat

    • AsyncRat

      AsyncRAT is designed to remotely monitor and control other computers written in C#.

      ratasyncrat

    • Async RAT payload

      rat

    • Executes dropped EXE

    • Loads dropped DLL

    • Suspicious use of SetThreadContext

    behavioral3behavioral4

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Scheduled Task/Job

2
T1053

Persistence

Scheduled Task/Job

2
T1053

Privilege Escalation

Scheduled Task/Job

2
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Tasks