Resubmissions

01/06/2022, 14:27

220601-rskbmshbg5

19/09/2021, 03:58

210919-ejryxachcm10

19/09/2021, 01:27

210919-bvbjhscgel10

19/09/2021, 01:24

210919-bsvvdaaba910

12/08/2020, 13:47

200812-vc8ftkz17s10

Analysis

  • max time kernel
    241s
  • max time network
    243s
  • platform
    windows10_x64
  • resource
    win10-en
  • submitted
    19/09/2021, 03:58

General

  • Target
    SearchIndexer.exe
  • Size 91KB
  • Sample210919-ejryxachcm
  • SHA256 b8fda370e83bf776a2f4c4a23f5d701186e21984f771e878f04fe0136faf1fbf
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • diamondfox

C2
  • http://timesync.live/panel/gate.php

  • http://cartierxs.bit/panel/gate.php

  • http://salamsa.bit/panel/gate.php

  • http://rockababy.bit/panel/gate.php

  • http://minon.bit/panel/gate.php

  • http://bloxfox.bit/panel/gate.php

  • http://ggbbee.bit/panel/gate.php

  • http://locksock.bit/panel/gate.php

  • http://misosoup.bit/panel/gate.php

  • http://opseckes.bit/panel/gate.php

  • http://googletabmanager.com/panel/gate.php

Mutex
  • cyjJzYyDay1EfrkaW4HRyO6y4OufUKaS

xor.plain

Signatures

  • DiamondFox

    DiamondFox is a multipurpose botnet with many capabilities.

  • DiamondFox payload 2 IoCs

    Detects DiamondFox payload in file/memory.

  • Executes dropped EXE 1 IoCs
  • Drops file in Windows directory 2 IoCs
  • Checks SCSI registry key(s) 3 TTPs 3 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 26 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 49 IoCs
  • Suspicious use of SendNotifyMessage 49 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe
    "C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe"
    1⤵
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4688
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell Copy-Item -Path 'C:\Users\Admin\AppData\Local\Temp\SearchIndexer.exe' -Destination 'C:\Users\Admin\AppData\Local\xerasr\SearchIndexer.exe';Start-Sleep -s 60;Start-Process 'C:\Users\Admin\AppData\Local\xerasr\SearchIndexer.exe'
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:4792
      • C:\Users\Admin\AppData\Local\xerasr\SearchIndexer.exe
        "C:\Users\Admin\AppData\Local\xerasr\SearchIndexer.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:4444
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:4100
    • C:\Windows\system32\taskmgr.exe
      "C:\Windows\system32\taskmgr.exe" /4
      1⤵
      • Drops file in Windows directory
      • Checks SCSI registry key(s)
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:4620

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          memory/4792-129-0x00000000085E0000-0x00000000085E1000-memory.dmp

          memory/4792-135-0x00000000094C0000-0x00000000094C1000-memory.dmp

          memory/4792-123-0x0000000007062000-0x0000000007063000-memory.dmp

          memory/4792-125-0x0000000007D40000-0x0000000007D41000-memory.dmp

          memory/4792-126-0x0000000007E90000-0x0000000007E91000-memory.dmp

          memory/4792-127-0x0000000008000000-0x0000000008001000-memory.dmp

          memory/4792-128-0x0000000007E10000-0x0000000007E11000-memory.dmp

          memory/4792-130-0x00000000086B0000-0x00000000086B1000-memory.dmp

          memory/4792-124-0x0000000007560000-0x0000000007561000-memory.dmp

          memory/4792-136-0x0000000008A40000-0x0000000008A41000-memory.dmp

          memory/4792-137-0x0000000009420000-0x0000000009421000-memory.dmp

          memory/4792-138-0x0000000009CE0000-0x0000000009CE1000-memory.dmp

          memory/4792-143-0x000000000A860000-0x000000000A861000-memory.dmp

          memory/4792-122-0x0000000007060000-0x0000000007061000-memory.dmp

          memory/4792-121-0x00000000076A0000-0x00000000076A1000-memory.dmp

          memory/4792-120-0x0000000006F30000-0x0000000006F31000-memory.dmp

          memory/4792-154-0x0000000007063000-0x0000000007064000-memory.dmp