General

  • Target

    #!~#0Pen_9898_P@$SW0rd~!!$.zip

  • Size

    14.0MB

  • Sample

    240614-rldwaatgje

  • MD5

    142b855d560838f934e48fd1cc796822

  • SHA1

    94b2a4a1693b2f64d3263a30afaa4b74464b8d3a

  • SHA256

    1f7553701ef80138d6fd387a8a5919bd34684600b8c81e45102d2a4c720786c1

  • SHA512

    ef07724d5bf7f2bf03af211254eea92f0ccb67ba6948d14390c427a1f4f84a023a949cb4824db04171d1afc6e679b104655b4f4b3c264ef641932f8d8da170da

  • SSDEEP

    393216:JxIfFgaw9F68oNIRzSlnsmLb4bNkqo6WugG0J:JuyaXNIRzSlnsS4aU7mJ

Malware Config

Extracted

Family

stealc

rc4.plain

Targets

    • Target

      #!~#0Pen_9898_P@$SW0rd~!!$/Setup.exe

    • Size

      5.4MB

    • MD5

      ad2735f096925010a53450cb4178c89e

    • SHA1

      c6d65163c6315a642664f4eaec0fae9528549bfe

    • SHA256

      4e775b5fafb4e6d89a4694f8694d2b8b540534bd4a52ff42f70095f1c929160e

    • SHA512

      1868b22a7c5cba89545b06f010c09c5418b3d86039099d681eee9567c47208fdba3b89c6251cf03c964c58c805280d45ba9c3533125f6bd3e0bc067477e03ab9

    • SSDEEP

      98304:o/zx+riUDpJowboU+XEsumY2XW6jBYeZ1ER:2x+riUDwUj12X1tY5

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads data files stored by FTP clients

      Tries to access configuration files associated with programs like FileZilla.

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • 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

    • Checks installed software on the system

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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Credential Access

Unsecured Credentials

4
T1552

Credentials In Files

4
T1552.001

Discovery

Query Registry

3
T1012

System Information Discovery

3
T1082

Collection

Data from Local System

4
T1005

Tasks