cryptolocker | 9ab9779a9def35098b51524c517bd75fc302904fc248a1c02498bdd7e11fa99f

Analysis

max time kernel
150s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-03-2024 01:46

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General

Target

3843b3578a814cf378bb000394095425.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
2312	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2312	{34184A33-0407-212E-3320-09040709E2C2}.exe
2748	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2016	3843b3578a814cf378bb000394095425.exe
2312	{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-1-5-21-2297530677-1229052932-2803917579-1000\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 2016 wrote to memory of 2312	2016	3843b3578a814cf378bb000394095425.exe	28
PID 2016 wrote to memory of 2312	2016	3843b3578a814cf378bb000394095425.exe	28
PID 2016 wrote to memory of 2312	2016	3843b3578a814cf378bb000394095425.exe	28
PID 2016 wrote to memory of 2312	2016	3843b3578a814cf378bb000394095425.exe	28
PID 2312 wrote to memory of 2748	2312	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2312 wrote to memory of 2748	2312	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2312 wrote to memory of 2748	2312	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2312 wrote to memory of 2748	2312	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\3843b3578a814cf378bb000394095425.exe
"C:\Users\Admin\AppData\Local\Temp\3843b3578a814cf378bb000394095425.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2016
- 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\3843b3578a814cf378bb000394095425.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2312
- - 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:2748

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