General

  • Target

    bf34325a650f4d90b01e9d7edd833c7d0d379de58c39dab8fbb4e569186d716c

  • Size

    2.0MB

  • Sample

    240525-e6cshaef54

  • MD5

    8fdbae58a20ed5349b9ca0636cd5a77a

  • SHA1

    b341962a6befd6e9866361700dfd1081e24be17e

  • SHA256

    bf34325a650f4d90b01e9d7edd833c7d0d379de58c39dab8fbb4e569186d716c

  • SHA512

    91db049085430cb663a6f8f6e60f19cd783479851927e7aec4f0c5a6db26bfac35d48a32bc7b20435f0a26b521245c90f4803985fa842cf36b6e6ea821e710c8

  • SSDEEP

    49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ

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

      bf34325a650f4d90b01e9d7edd833c7d0d379de58c39dab8fbb4e569186d716c

    • Size

      2.0MB

    • MD5

      8fdbae58a20ed5349b9ca0636cd5a77a

    • SHA1

      b341962a6befd6e9866361700dfd1081e24be17e

    • SHA256

      bf34325a650f4d90b01e9d7edd833c7d0d379de58c39dab8fbb4e569186d716c

    • SHA512

      91db049085430cb663a6f8f6e60f19cd783479851927e7aec4f0c5a6db26bfac35d48a32bc7b20435f0a26b521245c90f4803985fa842cf36b6e6ea821e710c8

    • SSDEEP

      49152:s4K3x1vUKJtTF+TxMoxc1TU+j+dAzGwlrh:s4Ex18KtIuoITsdZ

    • 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