4d6233f5c2b1b671265464df97642a1bd1c5a0e96a12d1fc52a6a08cc1787f44

Analysis

max time kernel
135s
max time network
126s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:28

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General

Target

2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe
Size

35KB
MD5

4732bd6938064bee2916d934faf7cbb2
SHA1

efbd3d0ad01755e6633ed869b7199da410083abe
SHA256

4d6233f5c2b1b671265464df97642a1bd1c5a0e96a12d1fc52a6a08cc1787f44
SHA512

44a895687213636ff8b50243daedb1af5abb97fa72de23b0454daa24b3c1764370b165c1b28cd5e22aa341a8e5bb3e405bcc93c1d640ce8efb3ede06d796a34f
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg9Arbkzos5Pp7JV:bxNrC7kYo1Fxf2rY1dV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\pissa.exe	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exepissa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	pissa.exe

Executes dropped EXE 1 IoCs

Processes:

pissa.exe

pid process

4308 pissa.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4308	pissa.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe

description	pid	process	target process
PID 928 wrote to memory of 4308	928	2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe	pissa.exe
PID 928 wrote to memory of 4308	928	2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe	pissa.exe
PID 928 wrote to memory of 4308	928	2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe	pissa.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_4732bd6938064bee2916d934faf7cbb2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:928

C:\Users\Admin\AppData\Local\Temp\pissa.exe
"C:\Users\Admin\AppData\Local\Temp\pissa.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4308

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\pissa.exe
Filesize
36KB

MD5
3ad694c755107e0956c3bee265025b64

SHA1
2b913009c2f404869bfb11dc124b443a71dabb2e

SHA256
9556ae1e891153d59cf4c9f1c281e171ba973f93b2d017deea6751440a605bb5

SHA512
c9581dbd5525a405f165422e5299e32f52b81f38f77baf66c693893e5f32b0d53223d03cbe2c31fc9f6a2c64f1c92dcdb0d6efa7ef39a598b9ff88ee8e8f0bc1

Download Submit
C:\Users\Admin\AppData\Local\Temp\pissec.exe
Filesize
261B

MD5
11bed1c06d8f4680de5154405be20365

SHA1
9c3095f1aa0b02924c23592d1e86673bb0081ca1

SHA256
bcc0582f122db6e61d2aa06628275f5b882c01ca037699427d0f68e48d744666

SHA512
050bb38ff33ab7e8e8aa647cffb26d2b0a54074340e79f0acf0db8f076c421505f1e4c1ce169d55aeacd4085ce258a78d24327c9393650642963beb130517da8

Download Submit
memory/928-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/928-1-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/928-8-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4308-23-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download