02d8952ea5f4244218de90db6b6dfaf178f0109dc84de7391a6256b6d89ad965

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 23:20

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General

Target

2024-01-18_c4d1724c1c72729aee9a5d1d124be164_cryptolocker.exe
Size

50KB
MD5

c4d1724c1c72729aee9a5d1d124be164
SHA1

4131dafd5af093d23a564dc0a364d65b0eb43dc1
SHA256

02d8952ea5f4244218de90db6b6dfaf178f0109dc84de7391a6256b6d89ad965
SHA512

43e0ed6883d96da28579e4f98809c3d71ec79317d7336b2fda1fc412b4463d88ebde7ccf5e4352d04c2f4e4555dd2cd8a4a168e536d9bb2ad92014c108e83592
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTCFWpzgVrr:X6QFElP6n+gJBMOtEvwDpjBtELVv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023164-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023164-12.dat	CryptoLocker_set1

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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-18_c4d1724c1c72729aee9a5d1d124be164_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4880	asih.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 1404 wrote to memory of 4880	1404	2024-01-18_c4d1724c1c72729aee9a5d1d124be164_cryptolocker.exe	87
PID 1404 wrote to memory of 4880	1404	2024-01-18_c4d1724c1c72729aee9a5d1d124be164_cryptolocker.exe	87
PID 1404 wrote to memory of 4880	1404	2024-01-18_c4d1724c1c72729aee9a5d1d124be164_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-01-18_c4d1724c1c72729aee9a5d1d124be164_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_c4d1724c1c72729aee9a5d1d124be164_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4880

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\asih.exe

Filesize
50KB

MD5
ba997b9627b89fbdbc1b5a78318b9813

SHA1
dbc7704f096293239733d44f136045a2a9c9cddf

SHA256
c23c768939777f38c13e068dd55524abc302bcbee8f2d386b6eab07b9fe7da22

SHA512
0fd0c2a0ca2fa290c1fb8b0c401ede5d0f6092275299dbe53d5dd78d67adb8e2d959f841e621f8dcdb2b2fd2416413879e8de388d18e00e69f5e6d6df1af780c

Download Submit
memory/1404-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1404-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1404-2-0x0000000000710000-0x0000000000716000-memory.dmp

Filesize
24KB

Download
memory/4880-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4880-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download