60802c5e89535593e4ca14baf2cd8dbe45d8b6be6c098d25919892b4d840333a

Analysis

max time kernel
148s
max time network
150s
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 02:15

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General

Target

2024-05-22_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe
Size

79KB
MD5

a72c5b38cb62e0dec5fe46c2a80e01ee
SHA1

3027a9d53c99586da78de04a29c01cd339956a9c
SHA256

60802c5e89535593e4ca14baf2cd8dbe45d8b6be6c098d25919892b4d840333a
SHA512

238af1f38a3bcff2628b447091ee229579bd91c6b9b78b9ff3625c60b52e6a4a7604d873a86b83ec3d2b34b415962da3a9002593778e942a08352a63c759d269
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdJcRb:T6a+rdOOtEvwDpjNti

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1352-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/1352-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1088-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1088-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1352-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/1352-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1088-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1088-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1352-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/1352-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1088-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1088-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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_a72c5b38cb62e0dec5fe46c2a80e01ee_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_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1088 asih.exe

pid	process
1088	asih.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1352-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/1352-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1088-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1088-27-0x0000000000500000-0x0000000000510000-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

Processes:

2024-05-22_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe

description	pid	process	target process
PID 1352 wrote to memory of 1088	1352	2024-05-22_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe	asih.exe
PID 1352 wrote to memory of 1088	1352	2024-05-22_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe	asih.exe
PID 1352 wrote to memory of 1088	1352	2024-05-22_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_a72c5b38cb62e0dec5fe46c2a80e01ee_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1352

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1088

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
79KB

MD5
63f817c25869bd642fca35724560ddfc

SHA1
e98f71abf3090bfbdc82e693d18d8be1be76c14f

SHA256
73b56d748dbe4d1d5f3d5f3b5fc32f8aef73894e1a0ec1e483ae59d48a7273b2

SHA512
91feed0b7fd42445171dec1f75a330d0e1354bafecc1acee94f02e8a06c4902440b536e82ea35b0c06cf2c87104cd5c0c244af974e5cef45f0d1805ab32c53e3

Download Submit
memory/1088-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1088-26-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1088-20-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1088-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1352-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1352-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1352-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1352-9-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1352-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download