General

  • Target

    d83b46ddb754b838983651b38bcd55ccdd09cae1e79ea9c0e8b3d0c01e2db59f

  • Size

    3.1MB

  • Sample

    240606-r32nnsfe8s

  • MD5

    50be5d01f679a874802ddaac7c5f0169

  • SHA1

    d8e512434a94b0e123d1b7e0f4f4044252d7f238

  • SHA256

    d83b46ddb754b838983651b38bcd55ccdd09cae1e79ea9c0e8b3d0c01e2db59f

  • SHA512

    24e252b66ffe35845a03a5553096a018f91d6b3d0a36ba3aa0afab9e006dea35a14075e860b34a7fec9b7d34fd7a8e0516d43d9306afd70ee9a882fd27634f37

  • SSDEEP

    98304:yrvT3E7GFI/apsT+9w0+xobK8U9Ve7MpSfwYfiJkju9wxZmcp4/uV8rSBgXmVVKJ:i3E7GFI/apsT+9w0+xobK8U9Ve7MpSfk

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/r8z0l

https://steamcommunity.com/profiles/76561199698764354

Attributes
  • user_agent

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

Targets

    • Target

      d83b46ddb754b838983651b38bcd55ccdd09cae1e79ea9c0e8b3d0c01e2db59f

    • Size

      3.1MB

    • MD5

      50be5d01f679a874802ddaac7c5f0169

    • SHA1

      d8e512434a94b0e123d1b7e0f4f4044252d7f238

    • SHA256

      d83b46ddb754b838983651b38bcd55ccdd09cae1e79ea9c0e8b3d0c01e2db59f

    • SHA512

      24e252b66ffe35845a03a5553096a018f91d6b3d0a36ba3aa0afab9e006dea35a14075e860b34a7fec9b7d34fd7a8e0516d43d9306afd70ee9a882fd27634f37

    • SSDEEP

      98304:yrvT3E7GFI/apsT+9w0+xobK8U9Ve7MpSfwYfiJkju9wxZmcp4/uV8rSBgXmVVKJ:i3E7GFI/apsT+9w0+xobK8U9Ve7MpSfk

    • Detect Vidar Stealer

    • Stealc

      Stealc is an infostealer written in C++.

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

    • Downloads MZ/PE file

    • .NET Reactor proctector

      Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • 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 Enterprise v15

Tasks