Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows7_x64
  • resource
    win7-20240221-en
  • resource tags

    arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
  • submitted
    02-03-2024 20:52

General

  • Target

    2024-03-02_a9c7211eb7e2a5bacb6256554ca760fc_cryptolocker.exe

  • Size

    412KB

  • MD5

    a9c7211eb7e2a5bacb6256554ca760fc

  • SHA1

    a7c811659c1062b42a6d29cbed1cca8d38e6af6d

  • SHA256

    3386dcb841b528ec70cb2c44ef5eaed7a12eaee4afcc69047f0770303bdb9fdb

  • SHA512

    c19c5d87c67fd73f07ddb303ea3627b460cfd57d0ee36a1d9694cec0ace699bef0ab46d8faa5d935de2132deaa17a3f629db5f28d561ec8207f89eda1603c374

  • SSDEEP

    6144:EWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCBt933bpyjzx4oQDxS2g:EWkEuCaNT85I2vCMX5l+ZRvUtZC

Malware Config

Signatures

  • CryptoLocker

    Ransomware family with multiple variants.

  • Deletes itself 1 IoCs
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2024-03-02_a9c7211eb7e2a5bacb6256554ca760fc_cryptolocker.exe
    "C:\Users\Admin\AppData\Local\Temp\2024-03-02_a9c7211eb7e2a5bacb6256554ca760fc_cryptolocker.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:2492
    • C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
      "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" "/rC:\Users\Admin\AppData\Local\Temp\2024-03-02_a9c7211eb7e2a5bacb6256554ca760fc_cryptolocker.exe"
      2⤵
      • Deletes itself
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2208
      • C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
        "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w000000C8
        3⤵
        • Executes dropped EXE
        PID:2888

Network

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

1
T1112

Replay Monitor

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Downloads

  • \Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    Filesize

    412KB

    MD5

    a9c7211eb7e2a5bacb6256554ca760fc

    SHA1

    a7c811659c1062b42a6d29cbed1cca8d38e6af6d

    SHA256

    3386dcb841b528ec70cb2c44ef5eaed7a12eaee4afcc69047f0770303bdb9fdb

    SHA512

    c19c5d87c67fd73f07ddb303ea3627b460cfd57d0ee36a1d9694cec0ace699bef0ab46d8faa5d935de2132deaa17a3f629db5f28d561ec8207f89eda1603c374