cryptolocker | 7160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 21:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe
Size

400KB
MD5

a769c781e3748314825f3effbd176b9b
SHA1

23b605d66164573492da31bcdffccc01fd9d3957
SHA256

7160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a
SHA512

8456c3718f529d17e182b865e8c8fb2c00f43abfaa4eabd024bafa6874ddc90a4eb624229ddbad5e9f0e244ff0de107fbef116038cb72fff13f703b46145c536
SSDEEP

6144:VWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCvgCSng:VWkEuCaNT85I2vCMX5l+ZRv9CD

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2980	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2980	{34184A33-0407-212E-3320-09040709E2C2}.exe
2544	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
1740	2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe
2980	{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-1-5-21-3787592910-3720486031-2929222812-1000\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 1740 wrote to memory of 2980	1740	2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe	28
PID 1740 wrote to memory of 2980	1740	2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe	28
PID 1740 wrote to memory of 2980	1740	2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe	28
PID 1740 wrote to memory of 2980	1740	2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe	28
PID 2980 wrote to memory of 2544	2980	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2980 wrote to memory of 2544	2980	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2980 wrote to memory of 2544	2980	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2980 wrote to memory of 2544	2980	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_a769c781e3748314825f3effbd176b9b_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1740
- 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_a769c781e3748314825f3effbd176b9b_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2980
- - 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:2544

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

Replay Monitor

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Roaming\{34184A33-0407-212E-3320-09040709E2C2}.exe

Filesize
400KB

MD5
a769c781e3748314825f3effbd176b9b

SHA1
23b605d66164573492da31bcdffccc01fd9d3957

SHA256
7160b2b41f1b7d0b6546663586ad8207c13a5e240d23cbedbfc9ba81ac406d1a

SHA512
8456c3718f529d17e182b865e8c8fb2c00f43abfaa4eabd024bafa6874ddc90a4eb624229ddbad5e9f0e244ff0de107fbef116038cb72fff13f703b46145c536

Download Submit

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads