General

  • Target

    libreoffice_out.exe

  • Size

    391KB

  • Sample

    230125-vnnp2saf21

  • MD5

    d69cc73dfdba7cecce5ec8ba5302991a

  • SHA1

    1a31b98b3a15aa30c9142b2bd6f1fc803219f490

  • SHA256

    c0b6a90bb020f1795ae0c9eacf27dd940a69ca694670c1eb6afdcb65edb9e59b

  • SHA512

    74ebd532c0e79f5b6a72af8dc13cade0909204d3e9af2d89bc89588a0cb45e3909eeaf053d0cb55910a0fbedebda4c8c6485aa81b87034f5e6c5defac37c65d1

  • SSDEEP

    12288:WbCG7F1wjOLak1PCgqaapo2RvxC1WyOPwQOhGwYyY9ZGyooo3RZNzBjlww43vmOC:mzww4fmOa6IglK

Malware Config

Extracted

Family

redline

Botnet

redline

C2

79.137.133.225:25999

Attributes
  • auth_value

    38284dbf15da9b4a9eaee0ef0d2b343f

Extracted

Family

aurora

C2

79.137.133.225:8081

Targets

    • Target

      libreoffice_out.exe

    • Size

      391KB

    • MD5

      d69cc73dfdba7cecce5ec8ba5302991a

    • SHA1

      1a31b98b3a15aa30c9142b2bd6f1fc803219f490

    • SHA256

      c0b6a90bb020f1795ae0c9eacf27dd940a69ca694670c1eb6afdcb65edb9e59b

    • SHA512

      74ebd532c0e79f5b6a72af8dc13cade0909204d3e9af2d89bc89588a0cb45e3909eeaf053d0cb55910a0fbedebda4c8c6485aa81b87034f5e6c5defac37c65d1

    • SSDEEP

      12288:WbCG7F1wjOLak1PCgqaapo2RvxC1WyOPwQOhGwYyY9ZGyooo3RZNzBjlww43vmOC:mzww4fmOa6IglK

    • Aurora

      Aurora is a crypto wallet stealer written in Golang.

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • UAC bypass

    • Executes dropped EXE

    • Checks computer location settings

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

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Bypass User Account Control

1
T1088

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

4
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks