Analysis

  • max time kernel
    150s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    18-01-2021 10:43

General

  • Target

    SecuriteInfo.com.Trojan.GenericKD.36151210.5662.13366.exe

  • Size

    1.3MB

  • MD5

    40c5609d0196211eae06a33b3bae5ec8

  • SHA1

    a97cc0116b12526e68bdc1b7846810977abf6241

  • SHA256

    5adf963b1c92ba79a5003d87943b4cb6c8a72fb9db63d8922c43f6631ad27995

  • SHA512

    379281e99a5260d17891d9507101d39b3ee1e22c7924fbdb7120bb5af42c69063912a5f114ec258be9dbe41e4d6961098d113e5b3f06c89b9698fec764a68124

Score
10/10

Malware Config

Extracted

Family

remcos

C2

wedsazxcvfghyuiokjhbnvfcdsaweyplmhbvrtud.ydns.eu:1996

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Executes dropped EXE 4 IoCs
  • Adds Run key to start application 2 TTPs 4 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 24 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Program crash 2 IoCs
  • Delays execution with timeout.exe 6 IoCs
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 41 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 71 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.GenericKD.36151210.5662.13366.exe
    "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.GenericKD.36151210.5662.13366.exe"
    1⤵
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4772
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4284
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:3212
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3100
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:4248
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c timeout 1
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3096
      • C:\Windows\SysWOW64\timeout.exe
        timeout 1
        3⤵
        • Delays execution with timeout.exe
        PID:560
    • C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.GenericKD.36151210.5662.13366.exe
      "C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.GenericKD.36151210.5662.13366.exe"
      2⤵
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:856
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1256
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\win.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2444
          • C:\Users\Admin\AppData\Roaming\win.exe
            C:\Users\Admin\AppData\Roaming\win.exe
            5⤵
            • Executes dropped EXE
            • Suspicious use of NtSetInformationThreadHideFromDebugger
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:2848
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4452
              • C:\Windows\SysWOW64\timeout.exe
                timeout 1
                7⤵
                • Delays execution with timeout.exe
                PID:4504
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4488
              • C:\Windows\SysWOW64\timeout.exe
                timeout 1
                7⤵
                • Delays execution with timeout.exe
                PID:4580
            • C:\Windows\SysWOW64\cmd.exe
              "C:\Windows\System32\cmd.exe" /c timeout 1
              6⤵
              • Suspicious use of WriteProcessMemory
              PID:4596
              • C:\Windows\SysWOW64\timeout.exe
                timeout 1
                7⤵
                • Delays execution with timeout.exe
                PID:4620
            • C:\Users\Admin\AppData\Roaming\win.exe
              "C:\Users\Admin\AppData\Roaming\win.exe"
              6⤵
              • Executes dropped EXE
              PID:2656
            • C:\Users\Admin\AppData\Roaming\win.exe
              "C:\Users\Admin\AppData\Roaming\win.exe"
              6⤵
              • Executes dropped EXE
              PID:2844
            • C:\Users\Admin\AppData\Roaming\win.exe
              "C:\Users\Admin\AppData\Roaming\win.exe"
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious behavior: GetForegroundWindowSpam
              • Suspicious use of SetWindowsHookEx
              PID:4728
            • C:\Windows\SysWOW64\WerFault.exe
              C:\Windows\SysWOW64\WerFault.exe -u -p 2848 -s 1584
              6⤵
              • Program crash
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:4292
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4772 -s 1612
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1376

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\install.vbs
    MD5

    4a74e626596d6e66b4bbc59ee6848f2d

    SHA1

    047849ac8735ecc0943428c7cd5e00b52eee06ed

    SHA256

    98bd6dc219a7a3e04d3d67bbec9f0b4d4640831a3a6be0a0078b050041088b0e

    SHA512

    1cd943482d0f1ce2ffaf6ee4a82895e4d57c52051bb14bbda0548cf072b4c5cbe719d2cdb549b5ae7c0241dd9c68dd9d1674acd26aed684b8145500079cc5403

  • C:\Users\Admin\AppData\Roaming\win.exe
    MD5

    40c5609d0196211eae06a33b3bae5ec8

    SHA1

    a97cc0116b12526e68bdc1b7846810977abf6241

    SHA256

    5adf963b1c92ba79a5003d87943b4cb6c8a72fb9db63d8922c43f6631ad27995

    SHA512

    379281e99a5260d17891d9507101d39b3ee1e22c7924fbdb7120bb5af42c69063912a5f114ec258be9dbe41e4d6961098d113e5b3f06c89b9698fec764a68124

  • C:\Users\Admin\AppData\Roaming\win.exe
    MD5

    40c5609d0196211eae06a33b3bae5ec8

    SHA1

    a97cc0116b12526e68bdc1b7846810977abf6241

    SHA256

    5adf963b1c92ba79a5003d87943b4cb6c8a72fb9db63d8922c43f6631ad27995

    SHA512

    379281e99a5260d17891d9507101d39b3ee1e22c7924fbdb7120bb5af42c69063912a5f114ec258be9dbe41e4d6961098d113e5b3f06c89b9698fec764a68124

  • C:\Users\Admin\AppData\Roaming\win.exe
    MD5

    40c5609d0196211eae06a33b3bae5ec8

    SHA1

    a97cc0116b12526e68bdc1b7846810977abf6241

    SHA256

    5adf963b1c92ba79a5003d87943b4cb6c8a72fb9db63d8922c43f6631ad27995

    SHA512

    379281e99a5260d17891d9507101d39b3ee1e22c7924fbdb7120bb5af42c69063912a5f114ec258be9dbe41e4d6961098d113e5b3f06c89b9698fec764a68124

  • C:\Users\Admin\AppData\Roaming\win.exe
    MD5

    40c5609d0196211eae06a33b3bae5ec8

    SHA1

    a97cc0116b12526e68bdc1b7846810977abf6241

    SHA256

    5adf963b1c92ba79a5003d87943b4cb6c8a72fb9db63d8922c43f6631ad27995

    SHA512

    379281e99a5260d17891d9507101d39b3ee1e22c7924fbdb7120bb5af42c69063912a5f114ec258be9dbe41e4d6961098d113e5b3f06c89b9698fec764a68124

  • C:\Users\Admin\AppData\Roaming\win.exe
    MD5

    40c5609d0196211eae06a33b3bae5ec8

    SHA1

    a97cc0116b12526e68bdc1b7846810977abf6241

    SHA256

    5adf963b1c92ba79a5003d87943b4cb6c8a72fb9db63d8922c43f6631ad27995

    SHA512

    379281e99a5260d17891d9507101d39b3ee1e22c7924fbdb7120bb5af42c69063912a5f114ec258be9dbe41e4d6961098d113e5b3f06c89b9698fec764a68124

  • memory/560-16-0x0000000000000000-mapping.dmp
  • memory/856-18-0x0000000000413FA4-mapping.dmp
  • memory/856-17-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

  • memory/856-24-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

  • memory/1256-19-0x0000000000000000-mapping.dmp
  • memory/1376-21-0x00000000048A0000-0x00000000048A1000-memory.dmp
    Filesize

    4KB

  • memory/2444-25-0x0000000000000000-mapping.dmp
  • memory/2848-38-0x00000000057D0000-0x00000000057D1000-memory.dmp
    Filesize

    4KB

  • memory/2848-26-0x0000000000000000-mapping.dmp
  • memory/2848-29-0x00000000732D0000-0x00000000739BE000-memory.dmp
    Filesize

    6.9MB

  • memory/3096-15-0x0000000000000000-mapping.dmp
  • memory/3100-13-0x0000000000000000-mapping.dmp
  • memory/3212-12-0x0000000000000000-mapping.dmp
  • memory/4248-14-0x0000000000000000-mapping.dmp
  • memory/4284-11-0x0000000000000000-mapping.dmp
  • memory/4292-49-0x00000000049B0000-0x00000000049B1000-memory.dmp
    Filesize

    4KB

  • memory/4452-37-0x0000000000000000-mapping.dmp
  • memory/4488-40-0x0000000000000000-mapping.dmp
  • memory/4504-39-0x0000000000000000-mapping.dmp
  • memory/4580-41-0x0000000000000000-mapping.dmp
  • memory/4596-42-0x0000000000000000-mapping.dmp
  • memory/4620-43-0x0000000000000000-mapping.dmp
  • memory/4728-47-0x0000000000413FA4-mapping.dmp
  • memory/4728-52-0x0000000000400000-0x0000000000421000-memory.dmp
    Filesize

    132KB

  • memory/4772-7-0x0000000004F80000-0x0000000004F81000-memory.dmp
    Filesize

    4KB

  • memory/4772-8-0x0000000004F30000-0x0000000004F31000-memory.dmp
    Filesize

    4KB

  • memory/4772-9-0x0000000004F40000-0x0000000004F70000-memory.dmp
    Filesize

    192KB

  • memory/4772-10-0x00000000050B0000-0x00000000050B1000-memory.dmp
    Filesize

    4KB

  • memory/4772-6-0x00000000052E0000-0x00000000052E1000-memory.dmp
    Filesize

    4KB

  • memory/4772-5-0x0000000004D40000-0x0000000004D41000-memory.dmp
    Filesize

    4KB

  • memory/4772-3-0x00000000003E0000-0x00000000003E1000-memory.dmp
    Filesize

    4KB

  • memory/4772-2-0x00000000732D0000-0x00000000739BE000-memory.dmp
    Filesize

    6.9MB