Analysis

  • max time kernel
    140s
  • max time network
    127s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    29-12-2023 22:42

General

  • Target

    05f324f268d89d538d005ed163c25375.exe

  • Size

    513KB

  • MD5

    05f324f268d89d538d005ed163c25375

  • SHA1

    fa7292f7ba4129b4bd67d0068115d427cfd5e137

  • SHA256

    7cfa425be47b2561475067a302230a42d4a90207b2080fe7bc35852d24f91f96

  • SHA512

    e4c424fd31a6bce2366909f084d93aa03fa0c7e8ccc55bdacae00b5e9129f5a66367752afe8bf8d02b285e7dbbbe4b1e21e9ce4b21f7e7daf21667b94d368f50

  • SSDEEP

    12288:F8j5Z8SzMDZDGZQ8Uc169x09BDCQQ7lwPQeit1NxZZL:F6NOGZQ8Ue69x0c7KPQeitxf

Score
10/10

Malware Config

Extracted

Family

vidar

Version

40.1

Botnet

706

C2

https://eduarroma.tumblr.com/

Attributes
  • profile_id

    706

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 4 IoCs
  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\05f324f268d89d538d005ed163c25375.exe
    "C:\Users\Admin\AppData\Local\Temp\05f324f268d89d538d005ed163c25375.exe"
    1⤵
    • Modifies system certificate store
    • Suspicious use of WriteProcessMemory
    PID:2392
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 2392 -s 856
      2⤵
      • Program crash
      PID:1984

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Replay Monitor

Loading Replay Monitor...

Downloads

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

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

  • C:\Users\Admin\AppData\Local\Temp\Tar1F97.tmp
    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

  • memory/2392-2-0x0000000004510000-0x00000000045AD000-memory.dmp
    Filesize

    628KB

  • memory/2392-1-0x00000000002F0000-0x00000000003F0000-memory.dmp
    Filesize

    1024KB

  • memory/2392-3-0x0000000000400000-0x0000000002D0E000-memory.dmp
    Filesize

    41.1MB

  • memory/2392-62-0x0000000000400000-0x0000000002D0E000-memory.dmp
    Filesize

    41.1MB

  • memory/2392-65-0x0000000004510000-0x00000000045AD000-memory.dmp
    Filesize

    628KB

  • memory/2392-64-0x00000000002F0000-0x00000000003F0000-memory.dmp
    Filesize

    1024KB