Analysis

  • max time kernel
    129s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240508-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
  • submitted
    22-05-2024 20:47

General

  • Target

    2024-05-22_cb10201367bc9e8d2cbdf250f120faa2_cryptolocker.exe

  • Size

    37KB

  • MD5

    cb10201367bc9e8d2cbdf250f120faa2

  • SHA1

    005db97dd73331216ff9d698571c0d208af61179

  • SHA256

    18e106d2c47f85f4b220e712e909ab3eda05e302cc57e8bee749e7177c635bcc

  • SHA512

    f7a6e4a487de5207b3ee64cdc9b77b00c73174d768a6f13d4447ba632f7d303908bd3b93ced9f7db61dc2d7d2954b534de8af503d2113a5675f06e26279a540e

  • SSDEEP

    768:fTz7y3lhsT+hs1SQtOOtEvwDpjfAu9+4h62:fT+hsMQMOtEvwDpjoIHh62

Score
9/10

Malware Config

Signatures

  • Detection of CryptoLocker Variants 1 IoCs
  • Detection of Cryptolocker Samples 1 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies system certificate store 2 TTPs 8 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-05-22_cb10201367bc9e8d2cbdf250f120faa2_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-05-22_cb10201367bc9e8d2cbdf250f120faa2_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:3540
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Modifies system certificate store
      PID:2620

Network

MITRE ATT&CK Matrix ATT&CK v13

Defense Evasion

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

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

    38KB

    MD5

    9912404ca350ad010af3d87ede88c5ec

    SHA1

    7b80eb9e44851b9720b9a12b85b2dca0276c5c91

    SHA256

    b94dbeed672f2f8244bc7a0f3b7d04000028748798bd769e5cc6f72100f0d4be

    SHA512

    bb5b3966c04ae10d04d0111f634088322c7fafa6a5bd383ec2739ee2acd0e4e5d9b70e16a5c2ed756c5d7141bdf70c402cdc0a3d54ebc73b2b69d9e69b7959ef

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

    315B

    MD5

    a34ac19f4afae63adc5d2f7bc970c07f

    SHA1

    a82190fc530c265aa40a045c21770d967f4767b8

    SHA256

    d5a89e26beae0bc03ad18a0b0d1d3d75f87c32047879d25da11970cb5c4662a3

    SHA512

    42e53d96e5961e95b7a984d9c9778a1d3bd8ee0c87b8b3b515fa31f67c2d073c8565afc2f4b962c43668c4efa1e478da9bb0ecffa79479c7e880731bc4c55765

  • memory/2620-17-0x0000000002110000-0x0000000002116000-memory.dmp
    Filesize

    24KB

  • memory/2620-23-0x0000000000530000-0x0000000000536000-memory.dmp
    Filesize

    24KB

  • memory/3540-2-0x00000000004F0000-0x00000000004F6000-memory.dmp
    Filesize

    24KB

  • memory/3540-1-0x00000000004D0000-0x00000000004D6000-memory.dmp
    Filesize

    24KB

  • memory/3540-0-0x00000000004D0000-0x00000000004D6000-memory.dmp
    Filesize

    24KB