965186964b84d3753c308705a02d05d611b2b42624e00714fcb26f9d1235e176

Analysis

max time kernel
149s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26/01/2024, 19:31

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General

Target

2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe
Size

80KB
MD5

6ad3826b921d4b96ff30553348ea7571
SHA1

13763dddb3838632abf6db27b44c0e86674d50fe
SHA256

965186964b84d3753c308705a02d05d611b2b42624e00714fcb26f9d1235e176
SHA512

ca7924c20a7ee55cd5c44fe3a6ab3e2b1cd61219b4dd6bece1e4e3b33f0aa60ba7736f301af18ab97f935f54f37eae0098bf01c5d7052d8bf17311a906cc0e1b
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT7W6:T6a+rdOOtEvwDpjN3

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4316-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000600000002320b-13.dat	CryptoLocker_rule2
behavioral2/memory/4316-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4708-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4316-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000600000002320b-13.dat	CryptoLocker_set1
behavioral2/memory/4316-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4708-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4316-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000600000002320b-13.dat	UPX
behavioral2/memory/4316-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4708-26-0x0000000000500000-0x0000000000510000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4708	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4316-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000600000002320b-13.dat	upx
behavioral2/memory/4316-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4708-26-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 4316 wrote to memory of 4708	4316	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe	86
PID 4316 wrote to memory of 4708	4316	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe	86
PID 4316 wrote to memory of 4708	4316	2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_6ad3826b921d4b96ff30553348ea7571_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4708

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
80KB

MD5
528562e3ddd44c81331dcb75e7661c40

SHA1
ff47d745f8df3b097193d8d1812a5b57a6dcfe5b

SHA256
d2ad7b54dc3b63d21bc67af386313235307dba674c022ec80806df8d1dcd309c

SHA512
a9a8f21321da55c9134afa07080f394b3b69a27ecab7866da3a2e28e25453e7be4d870d37987f01e119cf668e5c46e90684abe0039f419102eaef2c2a0741a4c

Download Submit
memory/4316-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4316-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4316-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4316-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4316-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4708-22-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/4708-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download