General

  • Target

    8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c

  • Size

    1.9MB

  • Sample

    240527-wxr99sea63

  • MD5

    0b9c39a0be0ab2bd1317486bbb3a133a

  • SHA1

    3ab5156839e02bd89b39f9d2b01b234e315e3015

  • SHA256

    8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c

  • SHA512

    e65d555537f3248ed270d02864ae6f28df9f8ec2e2799309a28a199fa62183ebe45fe37b796bef4d3bddc941229059e19f378423837332849224410900c6d9a1

  • SSDEEP

    49152:CdKfTn6v2JtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnFtIuoITsdZ

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

      8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c

    • Size

      1.9MB

    • MD5

      0b9c39a0be0ab2bd1317486bbb3a133a

    • SHA1

      3ab5156839e02bd89b39f9d2b01b234e315e3015

    • SHA256

      8dd5303574d1139eb32f3d974c3e7f8028f239b75db7f2723d3b215b771b182c

    • SHA512

      e65d555537f3248ed270d02864ae6f28df9f8ec2e2799309a28a199fa62183ebe45fe37b796bef4d3bddc941229059e19f378423837332849224410900c6d9a1

    • SSDEEP

      49152:CdKfTn6v2JtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTnFtIuoITsdZ

    • 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