5448836f47379d10e133583b018151fd0c92cb5f26d9ba5a69e394b487b08a38

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 06:15

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General

Target

2024-02-20_ed0be8e1217696241fd77eeea9e7a55d_cryptolocker.exe
Size

41KB
MD5

ed0be8e1217696241fd77eeea9e7a55d
SHA1

d7c282b3b6cf21b49a36acd9f3e0bde64123d514
SHA256

5448836f47379d10e133583b018151fd0c92cb5f26d9ba5a69e394b487b08a38
SHA512

8245a25d86715becc23e56b8916c86ba3054ae575fbf990c648dffaa7d394e32c6faed58e43f1b96d3adbfdb2cb7cbb3fcabab320a5b0b3f0f3c82a7dd1321b9
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAX:b/pYayGig5HjS3NPAX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023239-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-02-20_ed0be8e1217696241fd77eeea9e7a55d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1516	retln.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3056 wrote to memory of 1516	3056	2024-02-20_ed0be8e1217696241fd77eeea9e7a55d_cryptolocker.exe	84
PID 3056 wrote to memory of 1516	3056	2024-02-20_ed0be8e1217696241fd77eeea9e7a55d_cryptolocker.exe	84
PID 3056 wrote to memory of 1516	3056	2024-02-20_ed0be8e1217696241fd77eeea9e7a55d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-20_ed0be8e1217696241fd77eeea9e7a55d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_ed0be8e1217696241fd77eeea9e7a55d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3056
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
42KB

MD5
197c14f0b8327a19f5a74761181bd404

SHA1
945c622f2c99a5c28bd63ad1b90e9eb8d932f35b

SHA256
96eef085cb4af1a872f58ffa3cd32386359881184b853fe590f3c74ff66b4b57

SHA512
85deedbb4cfc7bcdb7f5d1047932fd2d5e4b931b1cb5e04e78ddf0c7467a207c081461f23db8dccc6fef368859df11dc4882eb8690dcffdb8d925c02d4bb2ba2

Download Submit
memory/3056-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3056-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3056-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download