a5b41cb3bdfe82d1c57d8fd4cc03a1eada1fc69fc94e606e2aa15b675f09b537

Analysis

max time kernel
0s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
07/01/2024, 12:15

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General

Target

2024-01-06_b633cddfc003be9be432541d3516dd5a_cryptolocker.exe
Size

99KB
MD5

b633cddfc003be9be432541d3516dd5a
SHA1

b5c202b233bf703a6b7661e0424cbb3eb0953772
SHA256

a5b41cb3bdfe82d1c57d8fd4cc03a1eada1fc69fc94e606e2aa15b675f09b537
SHA512

e606ec2d2dba01464656a1dd8a280121882d52d55b9721972f94cfa7aa2d9ee23e109f50ae8d174888b3a2af9c912321c0f0ef7420d05bbd074bdefa5a99b260
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwNgpwqWsviP1g:AnBdOOtEvwDpj6zg

Score

7^/10

upx

Malware Config

Signatures

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-06_b633cddfc003be9be432541d3516dd5a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2888	asih.exe

UPX packed file 3 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1472-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1472-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/2888-25-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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 1472 wrote to memory of 2888	1472	2024-01-06_b633cddfc003be9be432541d3516dd5a_cryptolocker.exe	14
PID 1472 wrote to memory of 2888	1472	2024-01-06_b633cddfc003be9be432541d3516dd5a_cryptolocker.exe	14
PID 1472 wrote to memory of 2888	1472	2024-01-06_b633cddfc003be9be432541d3516dd5a_cryptolocker.exe	14

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
1⤵
- Executes dropped EXE
PID:2888

C:\Users\Admin\AppData\Local\Temp\2024-01-06_b633cddfc003be9be432541d3516dd5a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-06_b633cddfc003be9be432541d3516dd5a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1472

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

memory/1472-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1472-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1472-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1472-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1472-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2888-25-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download