cryptolocker | 3b1ff12e997c8d1c689607526cf57b4486a2edea7f01c2428beee8cbcfb0b150

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 23:30

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General

Target

2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe
Size

420KB
MD5

88e6167278358736fa4d97bb6565a859
SHA1

1c101c0566da79e001b98f54428bc62249c0d436
SHA256

3b1ff12e997c8d1c689607526cf57b4486a2edea7f01c2428beee8cbcfb0b150
SHA512

e6a177273948c082694209955c9508f8164a004a34f4483fba2dcb3c5ff61dba3708ac8887e1a57491507dfb63767c82433538fd802edfd4b24e5096f4b9296c
SSDEEP

6144:CWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCoCzfDOSBg:CWkEuCaNT85I2vCMX5l+ZRvUWl

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2344	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2344	{34184A33-0407-212E-3320-09040709E2C2}.exe
2640	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
1720	2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe
2344	{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-1-5-21-3452737119-3959686427-228443150-1000\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 1720 wrote to memory of 2344	1720	2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe	28
PID 1720 wrote to memory of 2344	1720	2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe	28
PID 1720 wrote to memory of 2344	1720	2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe	28
PID 1720 wrote to memory of 2344	1720	2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe	28
PID 2344 wrote to memory of 2640	2344	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2344 wrote to memory of 2640	2344	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2344 wrote to memory of 2640	2344	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2344 wrote to memory of 2640	2344	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_88e6167278358736fa4d97bb6565a859_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1720
- 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_88e6167278358736fa4d97bb6565a859_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2344
- - 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:2640

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
420KB

MD5
88e6167278358736fa4d97bb6565a859

SHA1
1c101c0566da79e001b98f54428bc62249c0d436

SHA256
3b1ff12e997c8d1c689607526cf57b4486a2edea7f01c2428beee8cbcfb0b150

SHA512
e6a177273948c082694209955c9508f8164a004a34f4483fba2dcb3c5ff61dba3708ac8887e1a57491507dfb63767c82433538fd802edfd4b24e5096f4b9296c

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads