cryptolocker | 52529731c9efe8195b73ccff56562453b513d85d85b5bc2643e91cc1431a15ad

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 20:56

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General

Target

2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe
Size

412KB
MD5

b96d73c84ccbd9f3e1ec466891504108
SHA1

a894f16e89f3a92857700ee995c71072c01e2e97
SHA256

52529731c9efe8195b73ccff56562453b513d85d85b5bc2643e91cc1431a15ad
SHA512

eef43a7e1ef99120d7b22daaa9d5ab216b6620d91aac0a1576f7e1f0db994e537c0ced4a9d0b388eeab69a51142ecd66870ed753ecaf6d4adbeacd8d9eec27ee
SSDEEP

6144:2Wmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCKp4p3bpyjzx4oQD4Slg:2WkEuCaNT85I2vCMX5l+ZRvnfd

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
1300	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
1300	{34184A33-0407-212E-3320-09040709E2C2}.exe
2180	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2792	2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe
1300	{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-1-5-21-2721934792-624042501-2768869379-1000\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 2792 wrote to memory of 1300	2792	2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe	28
PID 2792 wrote to memory of 1300	2792	2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe	28
PID 2792 wrote to memory of 1300	2792	2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe	28
PID 2792 wrote to memory of 1300	2792	2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe	28
PID 1300 wrote to memory of 2180	1300	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1300 wrote to memory of 2180	1300	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1300 wrote to memory of 2180	1300	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1300 wrote to memory of 2180	1300	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2792
- 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_b96d73c84ccbd9f3e1ec466891504108_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1300
- - 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:2180

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
412KB

MD5
b96d73c84ccbd9f3e1ec466891504108

SHA1
a894f16e89f3a92857700ee995c71072c01e2e97

SHA256
52529731c9efe8195b73ccff56562453b513d85d85b5bc2643e91cc1431a15ad

SHA512
eef43a7e1ef99120d7b22daaa9d5ab216b6620d91aac0a1576f7e1f0db994e537c0ced4a9d0b388eeab69a51142ecd66870ed753ecaf6d4adbeacd8d9eec27ee

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Analysis

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General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads