Analysis

  • max time kernel
    120s
  • max time network
    123s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    08/05/2021, 06:54

General

  • Target
    34d8fd324a2531af7dfc714984c991cf.exe
  • Size 877KB
  • Sample210508-q438dbhvra
  • SHA256 f0cda71528dfdf5b3fbc8af58a61aef5f9d6432c0359ab8d9df62209e6ce6d01
  • MD5 SHA1 SHA512

Malware Config

Extracted

Family
  • raccoon

Botnet
  • 1d76a465540f6a904ac9f1310fe3a3824b5b4549

Attributes
  • url4cnc

    https://tttttt.me/kokajakprozak

rc4.plain
rc4.plain

Signatures

  • Deletes Windows Defender Definitions 2 TTPs 1 IoCs

    Uses mpcmdrun utility to delete all AV definitions.

  • Raccoon

    Simple but powerful infostealer which was very active in 2019.

  • Suspicious use of NtCreateProcessExOtherParentProcess 1 IoCs
  • Disables Task Manager via registry modification
  • Downloads MZ/PE file
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 5 IoCs
  • Modifies system certificate store 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 10 IoCs
  • Suspicious use of WriteProcessMemory 52 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe
    "C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe
      "C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe"
      2⤵
      • Adds Run key to start application
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:872
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\e0de8109-4a76-4637-8cea-0591a8efacab" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        PID:2552
      • C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe
        "C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • Suspicious use of WriteProcessMemory
        PID:2808
        • C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe
          "C:\Users\Admin\AppData\Local\Temp\34d8fd324a2531af7dfc714984c991cf.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:8
          • C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\updatewin1.exe
            "C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\updatewin1.exe"
            5⤵
            • Executes dropped EXE
            • Suspicious use of WriteProcessMemory
            PID:524
            • C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\updatewin1.exe
              "C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\updatewin1.exe" --Admin
              6⤵
              • Executes dropped EXE
              • Suspicious use of WriteProcessMemory
              PID:1124
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                powershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                PID:2364
              • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                powershell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""C:\Users\Admin\AppData\Local\script.ps1""' -Verb RunAs}"
                7⤵
                • Suspicious use of AdjustPrivilegeToken
                • Suspicious use of WriteProcessMemory
                PID:512
                • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
                  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\script.ps1
                  8⤵
                  • Suspicious use of AdjustPrivilegeToken
                  PID:1960
              • C:\Program Files\Windows Defender\mpcmdrun.exe
                "C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all
                7⤵
                • Deletes Windows Defender Definitions
                PID:3152
              • C:\Windows\SysWOW64\cmd.exe
                C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""
                7⤵
                  PID:1820
            • C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\updatewin2.exe
              "C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\updatewin2.exe"
              5⤵
              • Drops file in Drivers directory
              • Executes dropped EXE
              PID:2564
            • C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\5.exe
              "C:\Users\Admin\AppData\Local\55008c59-e80c-48be-90c1-9cd63ef8188f\5.exe"
              5⤵
              • Executes dropped EXE
              PID:2816
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 748
                6⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:664
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 848
                6⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1660
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 896
                6⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1664
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 908
                6⤵
                • Program crash
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:1372
              • C:\Windows\SysWOW64\WerFault.exe
                C:\Windows\SysWOW64\WerFault.exe -u -p 2816 -s 836
                6⤵
                • Suspicious use of NtCreateProcessExOtherParentProcess
                • Program crash
                • Suspicious use of AdjustPrivilegeToken
                PID:1160

    Network

          MITRE ATT&CK Enterprise v6

          Replay Monitor

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          Downloads

          memory/8-128-0x0000000000400000-0x0000000000537000-memory.dmp

          memory/512-216-0x0000000000E00000-0x0000000000E01000-memory.dmp

          memory/512-221-0x0000000000E03000-0x0000000000E04000-memory.dmp

          memory/512-217-0x0000000000E02000-0x0000000000E03000-memory.dmp

          memory/524-137-0x0000000000400000-0x000000000044D000-memory.dmp

          memory/872-114-0x0000000000400000-0x0000000000537000-memory.dmp

          memory/872-117-0x0000000000400000-0x0000000000537000-memory.dmp

          memory/1124-149-0x0000000000400000-0x000000000044D000-memory.dmp

          memory/1892-116-0x0000000002210000-0x000000000232B000-memory.dmp

          memory/1960-225-0x0000000005200000-0x0000000005201000-memory.dmp

          memory/1960-226-0x0000000005202000-0x0000000005203000-memory.dmp

          memory/1960-227-0x000000007EFB0000-0x000000007EFB1000-memory.dmp

          memory/1960-228-0x0000000005203000-0x0000000005204000-memory.dmp

          memory/2364-155-0x00000000074B0000-0x00000000074B1000-memory.dmp

          memory/2364-215-0x0000000000D96000-0x0000000000D98000-memory.dmp

          memory/2364-157-0x0000000007A30000-0x0000000007A31000-memory.dmp

          memory/2364-158-0x0000000007C40000-0x0000000007C41000-memory.dmp

          memory/2364-166-0x00000000089B0000-0x00000000089E3000-memory.dmp

          memory/2364-173-0x0000000008990000-0x0000000008991000-memory.dmp

          memory/2364-178-0x0000000008B00000-0x0000000008B01000-memory.dmp

          memory/2364-179-0x0000000008EC0000-0x0000000008EC1000-memory.dmp

          memory/2364-180-0x000000007F430000-0x000000007F431000-memory.dmp

          memory/2364-182-0x0000000000D93000-0x0000000000D94000-memory.dmp

          memory/2364-154-0x0000000006BF0000-0x0000000006BF1000-memory.dmp

          memory/2364-153-0x0000000007440000-0x0000000007441000-memory.dmp

          memory/2364-152-0x0000000006B50000-0x0000000006B51000-memory.dmp

          memory/2364-156-0x0000000007420000-0x0000000007421000-memory.dmp

          memory/2364-151-0x0000000000D92000-0x0000000000D93000-memory.dmp

          memory/2364-150-0x0000000000D90000-0x0000000000D91000-memory.dmp

          memory/2364-146-0x0000000000CD0000-0x0000000000CD1000-memory.dmp

          memory/2364-147-0x0000000006CA0000-0x0000000006CA1000-memory.dmp

          memory/2564-148-0x0000000000400000-0x000000000044D000-memory.dmp

          memory/2816-142-0x0000000000400000-0x00000000004AC000-memory.dmp

          memory/2816-141-0x00000000020D0000-0x0000000002161000-memory.dmp