General

  • Target

    af66942f952aeadb01e580733caa3c884f50a44da34ef989dace1dbb11a518a4

  • Size

    1.9MB

  • Sample

    240527-svgtzagh2z

  • MD5

    067c661513da0ad7b1bd513dde653098

  • SHA1

    8672484bb0ebaaa94ede8f77d88c94e9117a2685

  • SHA256

    af66942f952aeadb01e580733caa3c884f50a44da34ef989dace1dbb11a518a4

  • SHA512

    8afe4a9ee8a2908eb3b72e108331a15a79928d68c0d7168b23b99c9eb063a51d6ece7492ff04b9526692eda30638a6a1fb7990a274965f75cf2a7305a5d8bff9

  • SSDEEP

    49152:CdKfTn6vqJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn5tIuoITsdZ

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

      af66942f952aeadb01e580733caa3c884f50a44da34ef989dace1dbb11a518a4

    • Size

      1.9MB

    • MD5

      067c661513da0ad7b1bd513dde653098

    • SHA1

      8672484bb0ebaaa94ede8f77d88c94e9117a2685

    • SHA256

      af66942f952aeadb01e580733caa3c884f50a44da34ef989dace1dbb11a518a4

    • SHA512

      8afe4a9ee8a2908eb3b72e108331a15a79928d68c0d7168b23b99c9eb063a51d6ece7492ff04b9526692eda30638a6a1fb7990a274965f75cf2a7305a5d8bff9

    • SSDEEP

      49152:CdKfTn6vqJtTF+TxMoxc1TU+j+dAzGwlrh:CdKfTn5tIuoITsdZ

    • 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