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Overview

overview

10

Static

static

6b95cb3697...cb.exe

windows7-x64

10

6b95cb3697...cb.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    144s
  • max time network
    157s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220901-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
  • submitted
    23/11/2022, 23:53

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General

  • Target

    6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb.exe

  • Size

    320KB

  • MD5

    04b4b2f130705e6e22e4b940f5df3a90

  • SHA1

    d1ea0bf314bfb75b669bae9e2750fd55fe41077a

  • SHA256

    6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb

  • SHA512

    28fc9a38f7e73f09f75de2d73e99983875967140fd3a80330ddfa63351d0ffb97b5bc83acb9ddf2c55b503b857231044211eaa038aab0fc1304d99702657fc57

  • SSDEEP

    6144:jTw1o1IV3puaibGKFHi0mofhaH05kipz016580bHFP86JQPDHDdx/QtqR:nTgvmzFHi0mo5aH0qMzd5807FPPJQPDV

Score
10/10
evasionpersistencetrojan

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
    persistence
  • UAC bypass 3 TTPs 12 IoCs
    evasiontrojan
  • Adds policy Run key to start application 2 TTPs 27 IoCs
    persistence
  • Disables RegEdit via registry modification 6 IoCs
    evasion
  • Executes dropped EXE 2 IoCs
  • 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 64 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 6 IoCs
    evasiontrojan
  • Looks up external IP address via web service 4 IoCs

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

  • Drops file in System32 directory 4 IoCs
  • Drops file in Program Files directory 4 IoCs
  • Drops file in Windows directory 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies registry class 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs
  • System policy modification 1 TTPs 39 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb.exe
    "C:\Users\Admin\AppData\Local\Temp\6b95cb36974c66e4ae11c293e2e8ac530815db72356edcf25df221f181a119cb.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Checks computer location settings
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:3068
    • C:\Users\Admin\AppData\Local\Temp\ktyahr.exe
      "C:\Users\Admin\AppData\Local\Temp\ktyahr.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Drops file in System32 directory
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:3188
    • C:\Users\Admin\AppData\Local\Temp\ktyahr.exe
      "C:\Users\Admin\AppData\Local\Temp\ktyahr.exe" "-"
      2⤵
      • Modifies WinLogon for persistence
      • UAC bypass
      • Adds policy Run key to start application
      • Disables RegEdit via registry modification
      • Executes dropped EXE
      • Adds Run key to start application
      • Checks whether UAC is enabled
      • Modifies registry class
      • Suspicious behavior: GetForegroundWindowSpam
      • System policy modification
      PID:692
  • C:\Windows\System32\rundll32.exe
    C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
    1⤵
      PID:1404

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\ktyahr.exe
      Filesize

      692KB

      MD5

      efc7200c8b6294eed90d23c817e9a06d

      SHA1

      3502afe415884fb20c4809ffecaedcf76a346f98

      SHA256

      15d1c21cf3acea6701d5fa2a658dbbd7f9ac68c2687752de7cdebee1838aaf9e

      SHA512

      0e0e8e4708f9fe70ff220ddd16666c35b5310d26c0bba62dd2df4115ab75d65a87c15858e3dea52de4427e5208fa38538fbe02a3b8a6a96f353e3fb2e030cff2

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\ktyahr.exe
      Filesize

      692KB

      MD5

      efc7200c8b6294eed90d23c817e9a06d

      SHA1

      3502afe415884fb20c4809ffecaedcf76a346f98

      SHA256

      15d1c21cf3acea6701d5fa2a658dbbd7f9ac68c2687752de7cdebee1838aaf9e

      SHA512

      0e0e8e4708f9fe70ff220ddd16666c35b5310d26c0bba62dd2df4115ab75d65a87c15858e3dea52de4427e5208fa38538fbe02a3b8a6a96f353e3fb2e030cff2

      Download Submit

    • C:\Users\Admin\AppData\Local\Temp\ktyahr.exe
      Filesize

      692KB

      MD5

      efc7200c8b6294eed90d23c817e9a06d

      SHA1

      3502afe415884fb20c4809ffecaedcf76a346f98

      SHA256

      15d1c21cf3acea6701d5fa2a658dbbd7f9ac68c2687752de7cdebee1838aaf9e

      SHA512

      0e0e8e4708f9fe70ff220ddd16666c35b5310d26c0bba62dd2df4115ab75d65a87c15858e3dea52de4427e5208fa38538fbe02a3b8a6a96f353e3fb2e030cff2

      Download Submit