705e6eae4f1e312349c4199bf59a27383da843b9c512d29e545f8f47b699680c

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
23-05-2024 02:26

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General

Target

2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe
Size

32KB
MD5

2eec3f4a3604d433d0917d9dad4cf258
SHA1

2d6aa2b4b6ceb6cf24f5b1b9e9c2b706e677a797
SHA256

705e6eae4f1e312349c4199bf59a27383da843b9c512d29e545f8f47b699680c
SHA512

bf2aedff60d3c1c66c7111dad5f86abda26d01903df31312947e61ae715096f5bdbd05c4ddc4a81eb571c9b03c8598fb6285b26e4da157f15ea2bb986eeaef4d
SSDEEP

384:bAvMaNGh4z7CG3POOvbRSLoF/F0QU5XYFnufc/zzo6cJ3v7c:bAvJCYOOvbRPDEgXRcJ4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\demka.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_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exedemka.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	demka.exe

Executes dropped EXE 1 IoCs

Processes:

demka.exe

pid process

1008 demka.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1008	demka.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe

description	pid	process	target process
PID 3652 wrote to memory of 1008	3652	2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe	demka.exe
PID 3652 wrote to memory of 1008	3652	2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe	demka.exe
PID 3652 wrote to memory of 1008	3652	2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe	demka.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_2eec3f4a3604d433d0917d9dad4cf258_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3652

C:\Users\Admin\AppData\Local\Temp\demka.exe
"C:\Users\Admin\AppData\Local\Temp\demka.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1008

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

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Downloads

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

Filesize
32KB

MD5
ed7f6705efa205f39479849b5ff75023

SHA1
075b612815d4acb08e905db984e2b5b707a09ec6

SHA256
5253c8b629bc9dfc4774c2e4677eb89f3cec19dffe7b76343e3d0baf312615f1

SHA512
80c9d9c0fa88c8afd6e39090d28f52eecebbaa65d43b409361811a484e15b156cb49fc2e0dd2211ef209a170696a7ed533d3ba667f97ef4e0e232f4f3bcee298

Download Submit
C:\Users\Admin\AppData\Local\Temp\medkem.exe

Filesize
186B

MD5
dd43db5b3aead43dcf3a1de87f340a60

SHA1
ade10c715340cf93b214fab369207acf1a9a7c07

SHA256
ced0e6650da9b43d3a9c6fa48e261b468edfdc81bb69377e45e1a96229e811ba

SHA512
06cbcab5be689059c4f3aefc07b3b454b3225cfb674e44f72fafc5323c1062db82a88ab62910d8fd44d6e4daa6e88e6fe290c23691f74335306511fd71ae37a0

Download Submit
memory/1008-25-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/3652-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3652-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3652-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download