General

  • Target

    evo.gj.exe

  • Size

    2.8MB

  • Sample

    250329-3g4fxsxpv6

  • MD5

    dee0ebab182b215c4e1fb1c7da903d8a

  • SHA1

    84c3444a053cb709a4dd9b9928b40b4373b78732

  • SHA256

    49fcfcbb8cc1c85f2c7ec36eb139df3b70b898689b8e7f58b7c054ca900a9ce4

  • SHA512

    fa9c0d00dfb679a4d1c324390bcf2f8d562cf779e4f5487cb508f7167842c3453f545db593a218df3633aa36de98578115b9eaff7cd7b59969b1b264f78deb5c

  • SSDEEP

    49152:z7YGtlq/IU6iZXNVxrGiPsPAmpoAzjicaCNH2kLLKevfQfGVGNPq0ATmn9/:X9+brGiPoB421fQOVGU05

Malware Config

Extracted

Language
ps1
Deobfuscated
URLs
exe.dropper

http://3.27.199.84:3000/RuntimeBrokerSvc.exe

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

3.27.199.84:9182

Mutex

gRLpFG01LHh3

Attributes
  • delay

    3

  • install

    true

  • install_file

    RuntimeBrokerSvc.exe

  • install_folder

    %AppData%

aes.plain

Targets

    • Target

      evo.gj.exe

    • Size

      2.8MB

    • MD5

      dee0ebab182b215c4e1fb1c7da903d8a

    • SHA1

      84c3444a053cb709a4dd9b9928b40b4373b78732

    • SHA256

      49fcfcbb8cc1c85f2c7ec36eb139df3b70b898689b8e7f58b7c054ca900a9ce4

    • SHA512

      fa9c0d00dfb679a4d1c324390bcf2f8d562cf779e4f5487cb508f7167842c3453f545db593a218df3633aa36de98578115b9eaff7cd7b59969b1b264f78deb5c

    • SSDEEP

      49152:z7YGtlq/IU6iZXNVxrGiPsPAmpoAzjicaCNH2kLLKevfQfGVGNPq0ATmn9/:X9+brGiPoB421fQOVGU05

    • AsyncRat

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

    • Asyncrat family

    • Async RAT payload

    • 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.

    • 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