General

  • Target

    5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47

  • Size

    1.9MB

  • Sample

    240527-n1vwkabe26

  • MD5

    6b9a4d2e63304d3f921dc8b50443a348

  • SHA1

    2df6b1d896fb623e62509adec6b147abfcb77340

  • SHA256

    5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47

  • SHA512

    30e33013fc89667a5ddaa4ab5bf4ad614a28bd40e6180e882d23019274138a06d220bcae4278f8719adb13c9a15edd3514b224ddbc7ec6119e475baeb45f3dec

  • SSDEEP

    49152:CdKfTn6vKJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnJtIuoITsdZ

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://steamcommunity.com/profiles/76561199689717899

https://t.me/copterwin

Attributes
  • user_agent

    Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:128.0) Gecko/20100101 Firefox/128.0

Targets

    • Target

      5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47

    • Size

      1.9MB

    • MD5

      6b9a4d2e63304d3f921dc8b50443a348

    • SHA1

      2df6b1d896fb623e62509adec6b147abfcb77340

    • SHA256

      5a999f30c3aaba3676b7a62747f74315a7771bc5bdc09c83c7e99d6446136c47

    • SHA512

      30e33013fc89667a5ddaa4ab5bf4ad614a28bd40e6180e882d23019274138a06d220bcae4278f8719adb13c9a15edd3514b224ddbc7ec6119e475baeb45f3dec

    • SSDEEP

      49152:CdKfTn6vKJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnJtIuoITsdZ

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

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

    • 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

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Tasks