cryptolocker | 6ce538003451f172118e593922997afb745a618aad609b010224278e6d262091

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
04-03-2024 04:11

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General

Target

d15685fbb5e5e45d4f9d31078268f345.exe
Size

390KB
MD5

d15685fbb5e5e45d4f9d31078268f345
SHA1

9551d766b07a5a8e98146bc91473eb027dc0968c
SHA256

6ce538003451f172118e593922997afb745a618aad609b010224278e6d262091
SHA512

c4c768d8bb2af978ccaaf62e6cdbdd1e8c524a678929a064017e5b9a9b178d4430a76ac19d569e6849f300b13aa97f6b8d08d573f5fdd4e74793d02573dd5455
SSDEEP

6144:rWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCJS9SGg:rWkEuCaNT85I2vCMX5l+ZRvqKK

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2800	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2800	{34184A33-0407-212E-3320-09040709E2C2}.exe
1872	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2220	d15685fbb5e5e45d4f9d31078268f345.exe
2800	{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-1-5-21-406356229-2805545415-1236085040-1000\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 2220 wrote to memory of 2800	2220	d15685fbb5e5e45d4f9d31078268f345.exe	28
PID 2220 wrote to memory of 2800	2220	d15685fbb5e5e45d4f9d31078268f345.exe	28
PID 2220 wrote to memory of 2800	2220	d15685fbb5e5e45d4f9d31078268f345.exe	28
PID 2220 wrote to memory of 2800	2220	d15685fbb5e5e45d4f9d31078268f345.exe	28
PID 2800 wrote to memory of 1872	2800	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2800 wrote to memory of 1872	2800	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2800 wrote to memory of 1872	2800	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2800 wrote to memory of 1872	2800	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\d15685fbb5e5e45d4f9d31078268f345.exe
"C:\Users\Admin\AppData\Local\Temp\d15685fbb5e5e45d4f9d31078268f345.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2220
- 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\d15685fbb5e5e45d4f9d31078268f345.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2800
- - 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:1872

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
d15685fbb5e5e45d4f9d31078268f345

SHA1
9551d766b07a5a8e98146bc91473eb027dc0968c

SHA256
6ce538003451f172118e593922997afb745a618aad609b010224278e6d262091

SHA512
c4c768d8bb2af978ccaaf62e6cdbdd1e8c524a678929a064017e5b9a9b178d4430a76ac19d569e6849f300b13aa97f6b8d08d573f5fdd4e74793d02573dd5455

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads