cryptolocker | c6a916c33096cd488ca57c28863c433cf5279128aa50ea156761bab6444f4937

Resubmissions

24/02/2024, 15:44

240224-s6pzqafh5310

24/02/2024, 14:06

240224-relmjsdh4510

24/02/2024, 11:48

240224-nyvssabe4w3

Analysis

max time kernel
600s
max time network
609s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 14:06

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General

Target
Ransomware.CryptoLocker.exe
Size 338KB
Sample240224-relmjsdh45
SHA256 d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
MD5 04fb36199787f2e3e2135611a38321eb
SHA1 65559245709fe98052eb284577f1fd61c01ad20d
SHA512 533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
SSDEEP 6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
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
1928	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
1928	{34184A33-0407-212E-3320-09040709E2C2}.exe
4204	{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-1-5-21-1414748551-1520717498-2956787782-1000\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 1636 wrote to memory of 1928	1636	Ransomware.CryptoLocker.exe	88
PID 1636 wrote to memory of 1928	1636	Ransomware.CryptoLocker.exe	88
PID 1636 wrote to memory of 1928	1636	Ransomware.CryptoLocker.exe	88
PID 1928 wrote to memory of 4204	1928	{34184A33-0407-212E-3320-09040709E2C2}.exe	89
PID 1928 wrote to memory of 4204	1928	{34184A33-0407-212E-3320-09040709E2C2}.exe	89
PID 1928 wrote to memory of 4204	1928	{34184A33-0407-212E-3320-09040709E2C2}.exe	89

C:\Users\Admin\AppData\Local\Temp\Ransomware.CryptoLocker.exe
"C:\Users\Admin\AppData\Local\Temp\Ransomware.CryptoLocker.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1636
- 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\Ransomware.CryptoLocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1928
- - 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:4204

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 338KB
SHA256 d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
MD5 04fb36199787f2e3e2135611a38321eb
SHA1 65559245709fe98052eb284577f1fd61c01ad20d
SHA512 533d6603f6e2a77bd1b2c6591a135c4717753d53317c1be06e43774e896d9543bcd0ea6904a0688aa84b2d8424641d68994b1e7dc4aa46d66c36feecb6145444
SSDEEP 6144:sWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvC:sWkEuCaNT85I2vCMX5l+ZRv
MD5 SHA1 SHA512 SSDEEP

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Resubmissions

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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