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Analysis

  • max time kernel
    151s
  • max time network
    155s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220812-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25/11/2022, 19:51

General

  • Target

    57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe

  • Size

    284KB

  • MD5

    04d173a9e11d4c4116d495df2d9a6660

  • SHA1

    2d99f8c5c95a557644c7d6c303510520cb0ff255

  • SHA256

    57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5

  • SHA512

    d77e16b2003284e22f6683ab529dc84908dd1dc0458b5126c3852bdf90a87308bec5b8b53181cd1aea830489f32fe6c91ba30bebf92412484a338c1a1103c60e

  • SSDEEP

    3072:mSQ0EWVwZhKxC5Rt+k60Zh+qw6PYSsszfHZTZJ2lC:mPA6wxmuJspr2l

Score
8/10

Malware Config

Signatures

  • Adds policy Run key to start application 2 TTPs 2 IoCs
  • Executes dropped EXE 3 IoCs
  • UPX packed file 8 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Adds Run key to start application 2 TTPs 2 IoCs
  • Maps connected drives based on registry 3 TTPs 2 IoCs

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

  • Suspicious use of SetThreadContext 3 IoCs
  • Drops file in Program Files directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 50 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 34 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe
    "C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1080
    • C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe
      "C:\Users\Admin\AppData\Local\Temp\57e1b15cbdcc6fe5308ef05e1686bff246f3460b19d4f521e27a0579bd1738c5.exe"
      2⤵
      • Checks computer location settings
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:3696
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VLMJS.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:5096
        • C:\Windows\SysWOW64\reg.exe
          REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Skype" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe" /f
          4⤵
          • Adds Run key to start application
          PID:1456
      • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
        "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:3656
        • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
          "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          PID:2128
        • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe
          "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"
          4⤵
          • Executes dropped EXE
          • Maps connected drives based on registry
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of WriteProcessMemory
          PID:4212
          • C:\Windows\SysWOW64\svchost.exe
            C:\Windows\syswow64\svchost.exe
            5⤵
            • Adds policy Run key to start application
            • Drops file in Program Files directory
            PID:3396

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\VLMJS.bat

    Filesize

    139B

    MD5

    0654f004b2e314bad7f75867e91da37d

    SHA1

    4232c22e7340b12108d86e3cb35ed288a3dbc7f1

    SHA256

    ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249

    SHA512

    dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553

  • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe

    Filesize

    284KB

    MD5

    e80a828436452814a8a1871cf4f2a08d

    SHA1

    b9c9c22835ad0ff0689ca6d968895be0edb428f7

    SHA256

    27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

    SHA512

    9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

  • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe

    Filesize

    284KB

    MD5

    e80a828436452814a8a1871cf4f2a08d

    SHA1

    b9c9c22835ad0ff0689ca6d968895be0edb428f7

    SHA256

    27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

    SHA512

    9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

  • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe

    Filesize

    284KB

    MD5

    e80a828436452814a8a1871cf4f2a08d

    SHA1

    b9c9c22835ad0ff0689ca6d968895be0edb428f7

    SHA256

    27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

    SHA512

    9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

  • C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe

    Filesize

    284KB

    MD5

    e80a828436452814a8a1871cf4f2a08d

    SHA1

    b9c9c22835ad0ff0689ca6d968895be0edb428f7

    SHA256

    27d9bdf225098d9260a9ebbda53c7969c701dcb6ab0e2f6324108b79e1bde0e5

    SHA512

    9b0aa6bb0dd37bad418d0d18b6def4e8ad7e660174cb33aff038035efcf3d3c03af0a16e77bfb729b1aee5e192ca152aaa89f211fb1d31a8917579cb3b38eace

  • memory/2128-168-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/2128-167-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3396-169-0x0000000000680000-0x0000000000685000-memory.dmp

    Filesize

    20KB

  • memory/3396-166-0x0000000000680000-0x0000000000685000-memory.dmp

    Filesize

    20KB

  • memory/3396-165-0x0000000000760000-0x0000000000765000-memory.dmp

    Filesize

    20KB

  • memory/3696-135-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3696-164-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3696-137-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3696-150-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3696-138-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/3696-141-0x0000000000400000-0x000000000040B000-memory.dmp

    Filesize

    44KB

  • memory/4212-156-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB

  • memory/4212-163-0x0000000000400000-0x0000000000405000-memory.dmp

    Filesize

    20KB