0d0999ec062d3f87d01a0b6e6797b61c4daa662da56ff2e10e0408d551ce8631

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 00:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe
Size

52KB
MD5

6f6c64fc6d8de5531a4513903dde9bec
SHA1

56bce042abf0d6b335dd3dc8f0de88910446f4e2
SHA256

0d0999ec062d3f87d01a0b6e6797b61c4daa662da56ff2e10e0408d551ce8631
SHA512

8427954b299ff26fe73135b2e7b0f77340a4dd3d72e8d8f99b7f00a4ba1d022f5178b52dfbc4e7e474ccf13e90771e92fae97ac5aa18afe9b5a056f0722d9b4d
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfaO2:79mqyNhQMOtEvwDpjBxe8GGfaR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4256-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4256-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4256-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/4256-17-0x0000000000500000-0x000000000050F000-memory.dmp	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

Processes:

2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3484 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3484	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe

description	pid	process	target process
PID 4256 wrote to memory of 3484	4256	2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe	asih.exe
PID 4256 wrote to memory of 3484	4256	2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe	asih.exe
PID 4256 wrote to memory of 3484	4256	2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_6f6c64fc6d8de5531a4513903dde9bec_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4256

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3484

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
52KB

MD5
77b354e8ee12d830cdaa4a4585cc9c7e

SHA1
8053a0115c96a4845adcac0db17627d1f5ee83ed

SHA256
5dfd28aacb0f5488e84bdfb429705321ab57a1e2d2db3e2ba9a661b641c883c0

SHA512
9bd22164747420300111353eaa879cb670cbb83f41e7e1f21b3fd748929372f215e392c794a04046e8f183416c284b93329d8f2ae42d9a08ae63dd0800649b7d

Download Submit
memory/3484-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/3484-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4256-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4256-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4256-3-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4256-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4256-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download