cryptolocker | 9ab9779a9def35098b51524c517bd75fc302904fc248a1c02498bdd7e11fa99f

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
02/03/2024, 21:24

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General

Target
2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe
Size 390KB
Sample240302-z9ergsaa65
SHA256 9ab9779a9def35098b51524c517bd75fc302904fc248a1c02498bdd7e11fa99f
MD5 3843b3578a814cf378bb000394095425
SHA1 6d43a52d954c7c48b5ac7c81dcdae271c65ba766
SHA512 388d2d8642802cec6ffe78ff1d6e9f75db458a9df7a7f7d46e8bb433df55143bb27e0417a1d043a21994c2ef183431ea660577dada7d54f5a73c0e3d29712eaf
SSDEEP 6144:aWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCJDBSig:aWkEuCaNT85I2vCMX5l+ZRve+
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
1932	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
1932	{34184A33-0407-212E-3320-09040709E2C2}.exe
4604	{34184A33-0407-212E-3320-09040709E2C2}.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-513485977-2495024337-1260977654-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\CryptoLocker = "C:\\Users\\Admin\\AppData\\Roaming\\{34184A33-0407-212E-3320-09040709E2C2}.exe"	{34184A33-0407-212E-3320-09040709E2C2}.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 940 wrote to memory of 1932	940	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe	87
PID 940 wrote to memory of 1932	940	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe	87
PID 940 wrote to memory of 1932	940	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe	87
PID 1932 wrote to memory of 4604	1932	{34184A33-0407-212E-3320-09040709E2C2}.exe	89
PID 1932 wrote to memory of 4604	1932	{34184A33-0407-212E-3320-09040709E2C2}.exe	89
PID 1932 wrote to memory of 4604	1932	{34184A33-0407-212E-3320-09040709E2C2}.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:940
- 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_3843b3578a814cf378bb000394095425_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1932
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w0000021C
    3⤵
    - Executes dropped EXE
    PID:4604

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

{34184A33-0407-212E-3320-09040709E2C2}.exe

Path C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
Size 390KB
SHA256 9ab9779a9def35098b51524c517bd75fc302904fc248a1c02498bdd7e11fa99f
MD5 3843b3578a814cf378bb000394095425
SHA1 6d43a52d954c7c48b5ac7c81dcdae271c65ba766
SHA512 388d2d8642802cec6ffe78ff1d6e9f75db458a9df7a7f7d46e8bb433df55143bb27e0417a1d043a21994c2ef183431ea660577dada7d54f5a73c0e3d29712eaf
SSDEEP 6144:aWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCJDBSig:aWkEuCaNT85I2vCMX5l+ZRve+
MD5 SHA1 SHA512 SSDEEP

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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