cryptolocker | 9ab9779a9def35098b51524c517bd75fc302904fc248a1c02498bdd7e11fa99f

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 21:24

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General

Target

2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe
Size

390KB
MD5

3843b3578a814cf378bb000394095425
SHA1

6d43a52d954c7c48b5ac7c81dcdae271c65ba766
SHA256

9ab9779a9def35098b51524c517bd75fc302904fc248a1c02498bdd7e11fa99f
SHA512

388d2d8642802cec6ffe78ff1d6e9f75db458a9df7a7f7d46e8bb433df55143bb27e0417a1d043a21994c2ef183431ea660577dada7d54f5a73c0e3d29712eaf
SSDEEP

6144:aWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCJDBSig:aWkEuCaNT85I2vCMX5l+ZRve+

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2532	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2532	{34184A33-0407-212E-3320-09040709E2C2}.exe
2084	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2120	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe
2532	{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-1-5-21-1298544033-3225604241-2703760938-1000\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 8 IoCs

description	pid	Process	procid_target
PID 2120 wrote to memory of 2532	2120	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe	28
PID 2120 wrote to memory of 2532	2120	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe	28
PID 2120 wrote to memory of 2532	2120	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe	28
PID 2120 wrote to memory of 2532	2120	2024-03-02_3843b3578a814cf378bb000394095425_cryptolocker.exe	28
PID 2532 wrote to memory of 2084	2532	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2532 wrote to memory of 2084	2532	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2532 wrote to memory of 2084	2532	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2532 wrote to memory of 2084	2532	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

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⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2120
- 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
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe
    "C:\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe" /w000000CC
    3⤵
    - Executes dropped EXE
    PID:2084

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

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

Filesize
390KB

MD5
3843b3578a814cf378bb000394095425

SHA1
6d43a52d954c7c48b5ac7c81dcdae271c65ba766

SHA256
9ab9779a9def35098b51524c517bd75fc302904fc248a1c02498bdd7e11fa99f

SHA512
388d2d8642802cec6ffe78ff1d6e9f75db458a9df7a7f7d46e8bb433df55143bb27e0417a1d043a21994c2ef183431ea660577dada7d54f5a73c0e3d29712eaf

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads