cryptolocker | e3fa90f7c598daab4c168eabb4dbc9f95ee89b28b857e27c9f1f30ab3b38e915

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02-03-2024 20:51

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General

Target

2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe
Size

415KB
MD5

a060be447351d0e1fdb71f45e8cc3619
SHA1

45179b3f489d99bee2d33def800f7d6978ba9bc3
SHA256

e3fa90f7c598daab4c168eabb4dbc9f95ee89b28b857e27c9f1f30ab3b38e915
SHA512

5fbacdc82196e088a27165be1243fbc78fe797721bce458e654ad96a8c9e00f59154844f15f402ea8fe99b141ff922272c5a8979404864edbed49e7cdf81f4e6
SSDEEP

6144:iWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCOivgUOCo7nuao4S0b28BW7z:iWkEuCaNT85I2vCMX5l+ZRv/S

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2056	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2056	{34184A33-0407-212E-3320-09040709E2C2}.exe
2744	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2240	2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe
2056	{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 2240 wrote to memory of 2056	2240	2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe	28
PID 2240 wrote to memory of 2056	2240	2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe	28
PID 2240 wrote to memory of 2056	2240	2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe	28
PID 2240 wrote to memory of 2056	2240	2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe	28
PID 2056 wrote to memory of 2744	2056	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2056 wrote to memory of 2744	2056	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2056 wrote to memory of 2744	2056	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2056 wrote to memory of 2744	2056	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-02_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240
- 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_a060be447351d0e1fdb71f45e8cc3619_cryptolocker.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2056
- - 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:2744

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
415KB

MD5
a060be447351d0e1fdb71f45e8cc3619

SHA1
45179b3f489d99bee2d33def800f7d6978ba9bc3

SHA256
e3fa90f7c598daab4c168eabb4dbc9f95ee89b28b857e27c9f1f30ab3b38e915

SHA512
5fbacdc82196e088a27165be1243fbc78fe797721bce458e654ad96a8c9e00f59154844f15f402ea8fe99b141ff922272c5a8979404864edbed49e7cdf81f4e6

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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