d2549d689259f74723cc33f2238195c6664f5cbf4405a9b3b50f8f01569c9b82

Analysis

max time kernel
147s
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 00:48

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General

Target

2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe
Size

52KB
MD5

bd26509f4ecf02482f396725c85bf37f
SHA1

cf9bd5c00f855ae7bc879430e4b805346592831f
SHA256

d2549d689259f74723cc33f2238195c6664f5cbf4405a9b3b50f8f01569c9b82
SHA512

90fae266a8737fdf62339ed73b95077ddd79cac284319c2a3cbe302e8596f3cc15a07c86c398eacd51ef3187c0dca6258d2c98b9802aada795cbcd4016a321d6
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfSAW:79mqyNhQMOtEvwDpjBxe8GGfVW

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2656-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/2656-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2656-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/2656-17-0x0000000000500000-0x000000000050F000-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:

2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4164 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4164	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe

description	pid	process	target process
PID 2656 wrote to memory of 4164	2656	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe	asih.exe
PID 2656 wrote to memory of 4164	2656	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe	asih.exe
PID 2656 wrote to memory of 4164	2656	2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_bd26509f4ecf02482f396725c85bf37f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2656

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4164

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
52KB

MD5
e6d2a732211b5fef197139d678c14c5a

SHA1
0059117af0fbef8b9331dbf2fe4b57eec30d2a1f

SHA256
39cc40c37e8d8bb98da02c882bf340710f5dfbd54f83400787769bb050f125e1

SHA512
de345162fe61c655d3042973990d4f33a0806dd7283bd4ef6f8f1bad76961d34afdbe72ee760bc2fa89c91112329ac892e1033ec102f582a7dad97700820a8e4

Download Submit
memory/2656-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2656-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2656-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2656-9-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2656-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4164-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/4164-25-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download