cryptolocker | 6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

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

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General

Target

2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe
Size

404KB
MD5

e256554751f567643b949445307bbbd4
SHA1

a3ec05323d9c7ed51868615f46449818dd69201c
SHA256

6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9
SHA512

a1dfafb2a9229e42e30a794cac4bcc89e7007487b93d262779f1f076c80c7d0752fc910e7bc3ceee70443902cc169b3dc835cb02267ca8490620fa7ebf1bab5e
SSDEEP

6144:HWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCGJdZ3:HWkEuCaNT85I2vCMX5l+ZRvJdZ3

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
1880	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
1880	{34184A33-0407-212E-3320-09040709E2C2}.exe
2900	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2248	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe
1880	{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 2248 wrote to memory of 1880	2248	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe	28
PID 2248 wrote to memory of 1880	2248	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe	28
PID 2248 wrote to memory of 1880	2248	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe	28
PID 2248 wrote to memory of 1880	2248	2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe	28
PID 1880 wrote to memory of 2900	1880	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1880 wrote to memory of 2900	1880	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1880 wrote to memory of 2900	1880	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 1880 wrote to memory of 2900	1880	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_e256554751f567643b949445307bbbd4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2248
- 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_e256554751f567643b949445307bbbd4_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1880
- - 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:2900

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
404KB

MD5
e256554751f567643b949445307bbbd4

SHA1
a3ec05323d9c7ed51868615f46449818dd69201c

SHA256
6b14c5898323db58c5ff44149f65fc99b04924ba76dac72c18872e53d4829af9

SHA512
a1dfafb2a9229e42e30a794cac4bcc89e7007487b93d262779f1f076c80c7d0752fc910e7bc3ceee70443902cc169b3dc835cb02267ca8490620fa7ebf1bab5e

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads