Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240220-en
  • resource tags

    arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
  • submitted
    09-03-2024 23:39

General

  • Target

    bd1a94b7afc34843b33c32ed3c3613f0.exe

  • Size

    796KB

  • MD5

    bd1a94b7afc34843b33c32ed3c3613f0

  • SHA1

    06d293b2f9921fbe8e6861387622f6034fb4da8c

  • SHA256

    c4e584cf945824aa5c88fa352b2a598695ae61ac591a1a4e7580503b4b8a3402

  • SHA512

    28533f33cca14da40298c4f0377509b0cc93b2b999b71f705ba8ef50eabd588c0895f812ea175c18ccf4f90b18b4f97bf9856d84aec971981709030b144aef88

  • SSDEEP

    24576:2scQPFc8HTWK0g+W2r7fiYBlh73yTLeV38HuHf2D:2xQSUDV+W2TR7CeVM5

Malware Config

Extracted

Family

vidar

Version

39.9

Botnet

921

C2

https://prophefliloc.tumblr.com/

Attributes
  • profile_id

    921

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Vidar Stealer 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Accesses 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Suspicious use of SetThreadContext 1 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\bd1a94b7afc34843b33c32ed3c3613f0.exe
    "C:\Users\Admin\AppData\Local\Temp\bd1a94b7afc34843b33c32ed3c3613f0.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2860
    • C:\Users\Admin\AppData\Local\Temp\bd1a94b7afc34843b33c32ed3c3613f0.exe
      C:\Users\Admin\AppData\Local\Temp\bd1a94b7afc34843b33c32ed3c3613f0.exe
      2⤵
      • Checks processor information in registry
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      PID:2496

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

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

Query Registry

2
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

2
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\ProgramData\softokn3.dll
    Filesize

    275B

    MD5

    a378c450e6ad9f1e0356ed46da190990

    SHA1

    d457a2c162391d2ea30ec2dc62c8fb3b973f6a66

    SHA256

    b745b0c0db87a89de5e542e9ae0a06f585793ac3f4240bff3524e7dbdba79978

    SHA512

    e6cdc8f570af97e48b1d8968730db0afc46f9dd6ad7366a936a5518801debb61c86cc61526e5e26e7ad3b3daeb76a19b32d7c0da33140597f6d19163683c12b5

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

    67KB

    MD5

    753df6889fd7410a2e9fe333da83a429

    SHA1

    3c425f16e8267186061dd48ac1c77c122962456e

    SHA256

    b42dc237e44cbc9a43400e7d3f9cbd406dbdefd62bfe87328f8663897d69df78

    SHA512

    9d56f79410ad0cf852c74c3ef9454e7ae86e80bdd6ff67773994b48ccac71142bcf5c90635da6a056e1406e81e64674db9584928e867c55b77b59e2851cf6444

  • C:\Users\Admin\AppData\Local\Temp\Tar767E.tmp
    Filesize

    175KB

    MD5

    dd73cead4b93366cf3465c8cd32e2796

    SHA1

    74546226dfe9ceb8184651e920d1dbfb432b314e

    SHA256

    a6752b7851b591550e4625b832a393aabcc428de18d83e8593cd540f7d7cae22

    SHA512

    ce1bdd595065c94fa528badf4a6a8777893807d6789267612755df818ba6ffe55e4df429710aea29526ee4aa8ef20e25f2f05341da53992157d21ae032c0fb63

  • memory/2496-4-0x0000000000400000-0x00000000004A1000-memory.dmp
    Filesize

    644KB

  • memory/2496-6-0x0000000000400000-0x00000000004A1000-memory.dmp
    Filesize

    644KB

  • memory/2496-8-0x0000000000400000-0x00000000004A1000-memory.dmp
    Filesize

    644KB

  • memory/2496-91-0x0000000000400000-0x00000000004A1000-memory.dmp
    Filesize

    644KB

  • memory/2860-0-0x0000000000C60000-0x0000000000D2A000-memory.dmp
    Filesize

    808KB

  • memory/2860-1-0x0000000074050000-0x000000007473E000-memory.dmp
    Filesize

    6.9MB

  • memory/2860-2-0x0000000005140000-0x0000000005180000-memory.dmp
    Filesize

    256KB

  • memory/2860-3-0x0000000000260000-0x0000000000286000-memory.dmp
    Filesize

    152KB

  • memory/2860-7-0x0000000074050000-0x000000007473E000-memory.dmp
    Filesize

    6.9MB