General

  • Target

    334496c07a653ece94711c224327bd6f9c6b2af058b90eacfd7ff27441baa64d

  • Size

    2.0MB

  • Sample

    240526-yylj8aae5x

  • MD5

    f9cd1150b406c82398836b6b2844b71c

  • SHA1

    b984d355b0e4d0691ae77d71e73d6e3d5b38ac10

  • SHA256

    334496c07a653ece94711c224327bd6f9c6b2af058b90eacfd7ff27441baa64d

  • SHA512

    3df097d1b1e9788ffc61d519327b3abe096746ab1edfbe26d6f0652bf545413ba0f24a0593fdab65aeb86f19c732946beda8946204ad425594c19e57501bb2b7

  • SSDEEP

    49152:OePpQEZJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEZtIuoITsdZ

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

      334496c07a653ece94711c224327bd6f9c6b2af058b90eacfd7ff27441baa64d

    • Size

      2.0MB

    • MD5

      f9cd1150b406c82398836b6b2844b71c

    • SHA1

      b984d355b0e4d0691ae77d71e73d6e3d5b38ac10

    • SHA256

      334496c07a653ece94711c224327bd6f9c6b2af058b90eacfd7ff27441baa64d

    • SHA512

      3df097d1b1e9788ffc61d519327b3abe096746ab1edfbe26d6f0652bf545413ba0f24a0593fdab65aeb86f19c732946beda8946204ad425594c19e57501bb2b7

    • SSDEEP

      49152:OePpQEZJtTF+TxMoxc1TU+j+dAzGwlrh:OePpQEZtIuoITsdZ

    • 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