General

  • Target

    walient.exe

  • Size

    121KB

  • Sample

    240704-zgdcysxfrj

  • MD5

    5c76d15a7d3f57f26edc494bd9db318b

  • SHA1

    cfa089d8d7e9fde67b6cb85827d33431b2d80066

  • SHA256

    af872e954905dbfeb165da42d722889a7dfc4b84e88b52c9abc9de18a1a9d74f

  • SHA512

    3d7a621dcb56a8d8ded08e49c34c77071bcb8e8f408acd2ec9c00ff887342d1e3be935f3ad56b33ef7a96d0d85e1e36b6cccc9498a2b0fe96dab7b5d5747c1fb

  • SSDEEP

    3072:0ojAQkj90n5EIrHshi+LFUWHnGWdw8OkG2Li0HbovOm:YjWnSeGisFXnJw8Ziib

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

https://download.anydesk.com/AnyDesk.exe

Targets

    • Target

      walient.exe

    • Size

      121KB

    • MD5

      5c76d15a7d3f57f26edc494bd9db318b

    • SHA1

      cfa089d8d7e9fde67b6cb85827d33431b2d80066

    • SHA256

      af872e954905dbfeb165da42d722889a7dfc4b84e88b52c9abc9de18a1a9d74f

    • SHA512

      3d7a621dcb56a8d8ded08e49c34c77071bcb8e8f408acd2ec9c00ff887342d1e3be935f3ad56b33ef7a96d0d85e1e36b6cccc9498a2b0fe96dab7b5d5747c1fb

    • SSDEEP

      3072:0ojAQkj90n5EIrHshi+LFUWHnGWdw8OkG2Li0HbovOm:YjWnSeGisFXnJw8Ziib

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Blocklisted process makes network request

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

MITRE ATT&CK Matrix ATT&CK v13

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Persistence

Account Manipulation

1
T1098

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Scheduled Task/Job

1
T1053

Scheduled Task

1
T1053.005

Defense Evasion

Modify Registry

1
T1112

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Command and Control

Web Service

1
T1102

Tasks