Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    18-10-2022 03:41

General

  • Target

    d16605e415481e1825eb32856c4453937080bd0db67b028ea4a8d46aac03d43f.exe

  • Size

    2.0MB

  • MD5

    4baba246d86b3ae08fb2dc9a490be040

  • SHA1

    6bc3ab2e5d1028da543dcbf6e2d343a330e99f53

  • SHA256

    d16605e415481e1825eb32856c4453937080bd0db67b028ea4a8d46aac03d43f

  • SHA512

    2037339888c6cebf47c1ce162004f47ed0093b37ab14b9d577cc272fcd1d1fc2278ed5afd94bd9ce36bf6c1d4b6b0f77d0ca6e60cbfb493a4919b98555a29c7a

  • SSDEEP

    6144:JcFvrd1rWkNYiclkBw1x42dy8r1YAbycKkub86JQPDHDdx/QtqV:+1dCicWy1xFc8r1NbZKbPJQPDHvd

Malware Config

Signatures

  • Modifies WinLogon for persistence 2 TTPs 3 IoCs
  • UAC bypass 3 TTPs 11 IoCs
  • Adds policy Run key to start application 2 TTPs 18 IoCs
  • Disables RegEdit via registry modification 6 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 64 IoCs
  • Checks whether UAC is enabled 1 TTPs 6 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.

  • 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.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • System policy modification 1 TTPs 33 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d16605e415481e1825eb32856c4453937080bd0db67b028ea4a8d46aac03d43f.exe
    "C:\Users\Admin\AppData\Local\Temp\d16605e415481e1825eb32856c4453937080bd0db67b028ea4a8d46aac03d43f.exe"
    1⤵
    • Modifies WinLogon for persistence
    • UAC bypass
    • Adds policy Run key to start application
    • Disables RegEdit via registry modification
    • Loads dropped DLL
    • Adds Run key to start application
    • Checks whether UAC is enabled
    • Suspicious use of WriteProcessMemory
    • System policy modification
    PID:364
    • C:\Users\Admin\AppData\Local\Temp\ximkv.exe
      "C:\Users\Admin\AppData\Local\Temp\ximkv.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
      • System policy modification
      PID:1868
    • C:\Users\Admin\AppData\Local\Temp\ximkv.exe
      "C:\Users\Admin\AppData\Local\Temp\ximkv.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
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • System policy modification
      PID:1944

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\ximkv.exe

    Filesize

    3.0MB

    MD5

    3e71fcd468f2a704a9cb335ab1454cb0

    SHA1

    0faaa9e5a02c15992014bec2beb02ae00dd8621c

    SHA256

    fce06cae6d1c841ac48dec24e4cd4f789a40b3f9256fe937360a9d1da1e751f3

    SHA512

    c3aacda4c3dc1521ee950247a02d73ae74658e415c3c7f7474c7adf8d77aeb807eecfc9f9f83748f5d4105cec20382a710c6c30f2dc3d8e543e452b70638839e

  • C:\Users\Admin\AppData\Local\Temp\ximkv.exe

    Filesize

    3.0MB

    MD5

    3e71fcd468f2a704a9cb335ab1454cb0

    SHA1

    0faaa9e5a02c15992014bec2beb02ae00dd8621c

    SHA256

    fce06cae6d1c841ac48dec24e4cd4f789a40b3f9256fe937360a9d1da1e751f3

    SHA512

    c3aacda4c3dc1521ee950247a02d73ae74658e415c3c7f7474c7adf8d77aeb807eecfc9f9f83748f5d4105cec20382a710c6c30f2dc3d8e543e452b70638839e

  • \Users\Admin\AppData\Local\Temp\ximkv.exe

    Filesize

    3.0MB

    MD5

    3e71fcd468f2a704a9cb335ab1454cb0

    SHA1

    0faaa9e5a02c15992014bec2beb02ae00dd8621c

    SHA256

    fce06cae6d1c841ac48dec24e4cd4f789a40b3f9256fe937360a9d1da1e751f3

    SHA512

    c3aacda4c3dc1521ee950247a02d73ae74658e415c3c7f7474c7adf8d77aeb807eecfc9f9f83748f5d4105cec20382a710c6c30f2dc3d8e543e452b70638839e

  • \Users\Admin\AppData\Local\Temp\ximkv.exe

    Filesize

    3.0MB

    MD5

    3e71fcd468f2a704a9cb335ab1454cb0

    SHA1

    0faaa9e5a02c15992014bec2beb02ae00dd8621c

    SHA256

    fce06cae6d1c841ac48dec24e4cd4f789a40b3f9256fe937360a9d1da1e751f3

    SHA512

    c3aacda4c3dc1521ee950247a02d73ae74658e415c3c7f7474c7adf8d77aeb807eecfc9f9f83748f5d4105cec20382a710c6c30f2dc3d8e543e452b70638839e

  • \Users\Admin\AppData\Local\Temp\ximkv.exe

    Filesize

    3.0MB

    MD5

    3e71fcd468f2a704a9cb335ab1454cb0

    SHA1

    0faaa9e5a02c15992014bec2beb02ae00dd8621c

    SHA256

    fce06cae6d1c841ac48dec24e4cd4f789a40b3f9256fe937360a9d1da1e751f3

    SHA512

    c3aacda4c3dc1521ee950247a02d73ae74658e415c3c7f7474c7adf8d77aeb807eecfc9f9f83748f5d4105cec20382a710c6c30f2dc3d8e543e452b70638839e

  • \Users\Admin\AppData\Local\Temp\ximkv.exe

    Filesize

    3.0MB

    MD5

    3e71fcd468f2a704a9cb335ab1454cb0

    SHA1

    0faaa9e5a02c15992014bec2beb02ae00dd8621c

    SHA256

    fce06cae6d1c841ac48dec24e4cd4f789a40b3f9256fe937360a9d1da1e751f3

    SHA512

    c3aacda4c3dc1521ee950247a02d73ae74658e415c3c7f7474c7adf8d77aeb807eecfc9f9f83748f5d4105cec20382a710c6c30f2dc3d8e543e452b70638839e

  • memory/364-54-0x0000000076681000-0x0000000076683000-memory.dmp

    Filesize

    8KB

  • memory/364-65-0x00000000747A1000-0x00000000747A3000-memory.dmp

    Filesize

    8KB

  • memory/1868-67-0x0000000074801000-0x0000000074803000-memory.dmp

    Filesize

    8KB

  • memory/1868-66-0x00000000747B1000-0x00000000747B3000-memory.dmp

    Filesize

    8KB

  • memory/1868-57-0x0000000000000000-mapping.dmp

  • memory/1868-68-0x00000000745E1000-0x00000000745E3000-memory.dmp

    Filesize

    8KB

  • memory/1868-71-0x0000000074471000-0x0000000074473000-memory.dmp

    Filesize

    8KB

  • memory/1868-72-0x00000000745E1000-0x00000000745E3000-memory.dmp

    Filesize

    8KB

  • memory/1868-93-0x00000000745E1000-0x00000000745E3000-memory.dmp

    Filesize

    8KB

  • memory/1944-62-0x0000000000000000-mapping.dmp

  • memory/1944-92-0x0000000074471000-0x0000000074473000-memory.dmp

    Filesize

    8KB

  • memory/1944-94-0x0000000074471000-0x0000000074473000-memory.dmp

    Filesize

    8KB