cryptolocker | 9345dca87ef550116e235df4675ffd44110d5c6060c5bc0e100c1d1c279d5e8e

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 21:04

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General

Target

2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe
Size

390KB
MD5

e83149488595683e0c78febb79881ed5
SHA1

32d867c375c50d906c4a5d08f8bd96012548ecde
SHA256

9345dca87ef550116e235df4675ffd44110d5c6060c5bc0e100c1d1c279d5e8e
SHA512

12e16991a414d3eb4b1a961f18548b6dd0b052767b253b33a63f646b904a41940ad9cfeca7b9028e224e42be3cf1982ce21a0899e420717b84d31b4429e415ce
SSDEEP

6144:oWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCPD4SsSOg:oWkEuCaNT85I2vCMX5l+ZRv//G

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2740	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2740	{34184A33-0407-212E-3320-09040709E2C2}.exe
2548	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
1540	2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe
2740	{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-1-5-21-330940541-141609230-1670313778-1000\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 1540 wrote to memory of 2740	1540	2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe	28
PID 1540 wrote to memory of 2740	1540	2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe	28
PID 1540 wrote to memory of 2740	1540	2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe	28
PID 1540 wrote to memory of 2740	1540	2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe	28
PID 2740 wrote to memory of 2548	2740	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2740 wrote to memory of 2548	2740	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2740 wrote to memory of 2548	2740	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2740 wrote to memory of 2548	2740	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_e83149488595683e0c78febb79881ed5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1540
- 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_e83149488595683e0c78febb79881ed5_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2740
- - 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:2548

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
e83149488595683e0c78febb79881ed5

SHA1
32d867c375c50d906c4a5d08f8bd96012548ecde

SHA256
9345dca87ef550116e235df4675ffd44110d5c6060c5bc0e100c1d1c279d5e8e

SHA512
12e16991a414d3eb4b1a961f18548b6dd0b052767b253b33a63f646b904a41940ad9cfeca7b9028e224e42be3cf1982ce21a0899e420717b84d31b4429e415ce

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads