Analysis

  • max time kernel
    88s
  • max time network
    149s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231222-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
  • submitted
    25-01-2024 17:25

General

  • Target

    2024-01-25_3601743a62cb2f29362aa8ee21b709af_cryptolocker.exe

  • Size

    56KB

  • MD5

    3601743a62cb2f29362aa8ee21b709af

  • SHA1

    893c52a3d227da4c073430a35a8a166581377c83

  • SHA256

    7f7c6608c1043e434d8074fe8f791deb5f348403855c7a225efc806eb6b9dbb7

  • SHA512

    7f6753905d9ef43a41d4eca13128af49ed6dcc608124dacc8c221e07cfc80e88074394205218787bcb39818858f59ee60be0f5f8daed1620a0f306cec0631590

  • SSDEEP

    768:zQz7yVEhs9+syJP6ntOOtEvwDpjFeV0ZOfcpLzbO:zj+soPSMOtEvwDpj4yzbO

Score
10/10

Malware Config

Signatures

  • Kinsing

    Kinsing is a loader written in Golang.

  • Detection of CryptoLocker Variants 5 IoCs
  • Detection of Cryptolocker Samples 5 IoCs
  • UPX dump on OEP (original entry point) 5 IoCs
  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

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

  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-01-25_3601743a62cb2f29362aa8ee21b709af_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-01-25_3601743a62cb2f29362aa8ee21b709af_cryptolocker.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1356
    • C:\Users\Admin\AppData\Local\Temp\misid.exe
      "C:\Users\Admin\AppData\Local\Temp\misid.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      PID:1868

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

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

    Filesize

    56KB

    MD5

    9317a757d0fcc278f6fb769a99ce4096

    SHA1

    13f170b55d577907b2094cf69fbbede79d5337bd

    SHA256

    3fae64f1375d9944730e841a61bd003890556d9e889a870e743cf7f62d71803f

    SHA512

    4c96e25e400c28426eb5d18713b4e20a00eb1690dd15e34b5aa84e85a01e7028812954809d96aae1f4098ab3e49d1c128397cd42343a7d85ae0c319a59d81fe1

  • memory/1356-0-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1356-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/1356-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

    Filesize

    24KB

  • memory/1356-3-0x0000000000590000-0x0000000000596000-memory.dmp

    Filesize

    24KB

  • memory/1356-18-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1868-17-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB

  • memory/1868-20-0x0000000002080000-0x0000000002086000-memory.dmp

    Filesize

    24KB

  • memory/1868-23-0x0000000002050000-0x0000000002056000-memory.dmp

    Filesize

    24KB

  • memory/1868-55-0x0000000000500000-0x0000000000510000-memory.dmp

    Filesize

    64KB