dd04b081c712435f6b611a0d49470c28774acfd26a72bc8f96a9eb8379e45358

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 20:08

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General

Target

2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe
Size

54KB
MD5

97c6465934d1a1393453c3cd6dac0a37
SHA1

ffd507c583c52a6c751acd8cfeaa717968b2c5fc
SHA256

dd04b081c712435f6b611a0d49470c28774acfd26a72bc8f96a9eb8379e45358
SHA512

9bee22bf3882989ed1597526fd21e5c043f811dbcb6e82489411236cee6b0f233cbea6621183bc9f8cadadbb00d15ade7519a6ccb68eeb4b26f1f1701a38ca83
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdMFbz:79mqyNhQMOtEvwDpjBPY7xv3g8ZFbz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3932-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/3932-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/348-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3932-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/3932-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/348-18-0x0000000000500000-0x000000000050F000-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:

2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

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

System Information Discovery
T1082

pid	process
348	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe

description	pid	process	target process
PID 3932 wrote to memory of 348	3932	2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe	asih.exe
PID 3932 wrote to memory of 348	3932	2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe	asih.exe
PID 3932 wrote to memory of 348	3932	2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_97c6465934d1a1393453c3cd6dac0a37_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3932

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:348

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
54KB

MD5
903333f0fe73ee5e3f2980baaa73ffcb

SHA1
29f64e00d7467b807ec25199562f7d2d9db8ce31

SHA256
1743483e107b48e0f4602661cf68994ccc99629719cb4f62e696843a15fe300f

SHA512
f5e33c5aeb7dd759a6b8d642e9f32d2a5b71b8f47967dcbf4be123579f9285dfe9aee6d44866e7220da6d258df113f17d2094b58ab49d334ec5f336e3bac521e

Download Submit
memory/348-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/348-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/348-26-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/3932-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3932-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3932-2-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3932-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3932-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download