cryptolocker | 2514a2fe3d78d5974c2c3b080d20707f95653cd1892be272733264f202de24ac

Analysis

max time kernel
136s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04-03-2024 03:30

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General

Target

b1c38c5beea330b94b80a97980a96762.exe
Size

390KB
MD5

b1c38c5beea330b94b80a97980a96762
SHA1

5e3647cbb76dc43998922e4ebaa741ea7d34126e
SHA256

2514a2fe3d78d5974c2c3b080d20707f95653cd1892be272733264f202de24ac
SHA512

2054280aaa0d94582c1b45e4ff8f7986ea01c212f813a551f908b648f49988a955deaea259ed5d264c610b7c9024231945ced3685d4ce2132e75552a86442a7a
SSDEEP

6144:rWmw0EuCN0pLWgTO3x5N22vWvLRKKAX5l++SybIvCQAISbg:rWkEuCaNT85I2vCMX5l+ZRvmIf

Score

10^/10

cryptolocker persistence ransomware

Malware Config

Signatures

CryptoLocker
Ransomware family with multiple variants.
ransomware cryptolocker

Deletes itself 1 IoCs

pid	Process
2468	{34184A33-0407-212E-3320-09040709E2C2}.exe

Executes dropped EXE 2 IoCs

pid	Process
2468	{34184A33-0407-212E-3320-09040709E2C2}.exe
2576	{34184A33-0407-212E-3320-09040709E2C2}.exe

Loads dropped DLL 2 IoCs

pid	Process
2720	b1c38c5beea330b94b80a97980a96762.exe
2468	{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 2720 wrote to memory of 2468	2720	b1c38c5beea330b94b80a97980a96762.exe	28
PID 2720 wrote to memory of 2468	2720	b1c38c5beea330b94b80a97980a96762.exe	28
PID 2720 wrote to memory of 2468	2720	b1c38c5beea330b94b80a97980a96762.exe	28
PID 2720 wrote to memory of 2468	2720	b1c38c5beea330b94b80a97980a96762.exe	28
PID 2468 wrote to memory of 2576	2468	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2468 wrote to memory of 2576	2468	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2468 wrote to memory of 2576	2468	{34184A33-0407-212E-3320-09040709E2C2}.exe	29
PID 2468 wrote to memory of 2576	2468	{34184A33-0407-212E-3320-09040709E2C2}.exe	29

C:\Users\Admin\AppData\Local\Temp\b1c38c5beea330b94b80a97980a96762.exe
"C:\Users\Admin\AppData\Local\Temp\b1c38c5beea330b94b80a97980a96762.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2720
- 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\b1c38c5beea330b94b80a97980a96762.exe"
  2⤵
  - Deletes itself
  - Executes dropped EXE
  - Loads dropped DLL
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2468
- - 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:2576

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
b1c38c5beea330b94b80a97980a96762

SHA1
5e3647cbb76dc43998922e4ebaa741ea7d34126e

SHA256
2514a2fe3d78d5974c2c3b080d20707f95653cd1892be272733264f202de24ac

SHA512
2054280aaa0d94582c1b45e4ff8f7986ea01c212f813a551f908b648f49988a955deaea259ed5d264c610b7c9024231945ced3685d4ce2132e75552a86442a7a

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads