8d09a52a5c814874f0514567d6af9efcaeff16a1bd255887bfe215375dfa5836

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
29/04/2024, 15:27

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General

Target

2024-04-29_6c12b81136955b0a804ca9ea25832a37_cryptolocker.exe
Size

40KB
MD5

6c12b81136955b0a804ca9ea25832a37
SHA1

34ee21363dc277753dc48cc0ed0b88ca95108894
SHA256

8d09a52a5c814874f0514567d6af9efcaeff16a1bd255887bfe215375dfa5836
SHA512

6512bb3c8be4b208dd09ff5ce91699b9b5386af7366220ecf2c0486b3b76f30e47b34df429a7528214195a63ee42504751fd9c70bcdcb799939728b9d2e51649
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5axRVZD:V6QFElP6n+gMQMOtEvwDpjyaYaLD

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b24-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023b24-12.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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation	2024-04-29_6c12b81136955b0a804ca9ea25832a37_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
728	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 4044 wrote to memory of 728	4044	2024-04-29_6c12b81136955b0a804ca9ea25832a37_cryptolocker.exe	83
PID 4044 wrote to memory of 728	4044	2024-04-29_6c12b81136955b0a804ca9ea25832a37_cryptolocker.exe	83
PID 4044 wrote to memory of 728	4044	2024-04-29_6c12b81136955b0a804ca9ea25832a37_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-29_6c12b81136955b0a804ca9ea25832a37_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_6c12b81136955b0a804ca9ea25832a37_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:728

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
40KB

MD5
5a21b04a3715d8374221342a43cfd869

SHA1
9bd0ba1f7bbf0c86ee61e5360f5eead6b06aa3e1

SHA256
2768304e22f5a8ecebb30bca6aa88a8e3ed44bdb6274cb8e94ecffebc3d3f457

SHA512
ba11a23f694654559b910d8ba8e28422a5e4337446df852e6f0765e96ab6358cfbb200185ef198f2876439df8fa75affb52a523de14ce9286e224f327d0a84c6

Download Submit
memory/728-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/728-23-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4044-0-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/4044-1-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/4044-8-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download