Analysis

  • max time kernel
    7s
  • max time network
    17s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    07-06-2024 01:48

General

  • Target

    d8227944a7143a04cbd1a443d704fa1df108cccc78370c9f00756587989323ec.exe

  • Size

    2.4MB

  • MD5

    562687a84496956e4fa01811c02f45b4

  • SHA1

    926276d1633db57cdec97f26c1201dfd110048b4

  • SHA256

    d8227944a7143a04cbd1a443d704fa1df108cccc78370c9f00756587989323ec

  • SHA512

    9f42704656bf60b3e6a45722dde3f1e56d274333487a305618038c7ea18affbed1ffdfe580cc8e42589f17d3eb8691b5c3135254824f22cdddd830ae0d2b2c75

  • SSDEEP

    49152:wQc81KnB/a/hNT/dpYa8aesY3Ot4N7G/:wDta/hNT/dpn0etD/

Score
10/10

Malware Config

Extracted

Family

stealc

rc4.plain

Extracted

Family

vidar

C2

https://t.me/ta904ek

https://steamcommunity.com/profiles/76561199695752269

Attributes
  • user_agent

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

Signatures

  • Detect Vidar Stealer 9 IoCs
  • Stealc

    Stealc is an infostealer written in C++.

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d8227944a7143a04cbd1a443d704fa1df108cccc78370c9f00756587989323ec.exe
    "C:\Users\Admin\AppData\Local\Temp\d8227944a7143a04cbd1a443d704fa1df108cccc78370c9f00756587989323ec.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2916
    • C:\Users\Admin\AppData\Local\Temp\katC31.tmp
      C:\Users\Admin\AppData\Local\Temp\katC31.tmp
      2⤵
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2688

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    bb8707c8921487f7e8d3de06fce831f8

    SHA1

    bcfc5fa47c8a6e94b12b1ec082333edb31664191

    SHA256

    56f1af5faf9039cc42cd35e7c10f4439ea353e7a5471b6e61fd0e929809c7fea

    SHA512

    b61f69e0397f1a7a44e46cb2c3ded94a11ea7993034b43079a1b2c5dd4e37dae25df17a8d4c6c05fdf5a20e37c9803d53fc9b26c4eb4b0577f55877d48597f70

  • C:\Users\Admin\AppData\Local\Temp\Tar1849.tmp

    Filesize

    181KB

    MD5

    4ea6026cf93ec6338144661bf1202cd1

    SHA1

    a1dec9044f750ad887935a01430bf49322fbdcb7

    SHA256

    8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

    SHA512

    6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

  • \Users\Admin\AppData\Local\Temp\katC31.tmp

    Filesize

    861KB

    MD5

    66064dbdb70a5eb15ebf3bf65aba254b

    SHA1

    0284fd320f99f62aca800fb1251eff4c31ec4ed7

    SHA256

    6a94dbda2dd1edcff2331061d65e1baf09d4861cc7ba590c5ec754f3ac96a795

    SHA512

    b05c6c09ae7372c381fba591c3cb13a69a2451b9d38da1a95aac89413d7438083475d06796acb5440cd6ec65b030c9fa6cbdaa0d2fe91a926bae6499c360f17f

  • memory/2688-172-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-13-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-24-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-23-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-19-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-11-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-15-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-247-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-17-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-9-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-226-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2688-215-0x000000001E0B0000-0x000000001E30F000-memory.dmp

    Filesize

    2.4MB

  • memory/2688-213-0x0000000000400000-0x0000000000649000-memory.dmp

    Filesize

    2.3MB

  • memory/2916-0-0x00000000003A0000-0x00000000003A1000-memory.dmp

    Filesize

    4KB

  • memory/2916-2-0x00000000032C0000-0x000000000340C000-memory.dmp

    Filesize

    1.3MB

  • memory/2916-21-0x0000000000400000-0x0000000000663000-memory.dmp

    Filesize

    2.4MB