66a1818651ac9429ac499fc87f0e1e1f4144b9b99c587843631e63d9ade095d5

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18-04-2024 05:37

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General

Target

2024-04-18_7a6d8b32913b901dcd781ab6e81bdec0_cryptolocker.exe
Size

63KB
MD5

7a6d8b32913b901dcd781ab6e81bdec0
SHA1

59a63b2cdec8c8df129bf50e2f3e0aa02ae27b80
SHA256

66a1818651ac9429ac499fc87f0e1e1f4144b9b99c587843631e63d9ade095d5
SHA512

f0faf83f8ee37b31543db785de8aeb775a2435a102b51ad22d5f322909ef2a319544814f87a452b8fe3704a881f1b495906500e929086cda7829facd4f6bd112
SSDEEP

768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mnVwfXt:zj+soPSMOtEvwDpj4kpmeLmnwt

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_rule2
behavioral2/memory/1008-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1612-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9b1-13.dat	CryptoLocker_set1
behavioral2/memory/1008-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1612-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000300000001e9b1-13.dat	UPX
behavioral2/memory/1008-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1612-26-0x0000000000500000-0x0000000000510000-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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-18_7a6d8b32913b901dcd781ab6e81bdec0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1612	misid.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000300000001e9b1-13.dat	upx
behavioral2/memory/1008-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1612-26-0x0000000000500000-0x0000000000510000-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 1008 wrote to memory of 1612	1008	2024-04-18_7a6d8b32913b901dcd781ab6e81bdec0_cryptolocker.exe	84
PID 1008 wrote to memory of 1612	1008	2024-04-18_7a6d8b32913b901dcd781ab6e81bdec0_cryptolocker.exe	84
PID 1008 wrote to memory of 1612	1008	2024-04-18_7a6d8b32913b901dcd781ab6e81bdec0_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-18_7a6d8b32913b901dcd781ab6e81bdec0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_7a6d8b32913b901dcd781ab6e81bdec0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1008
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1612

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\misid.exe

Filesize
63KB

MD5
32e11e63ce42b9ad11281f4a4e49108d

SHA1
d8e444bc3e1961054aef1ffb1c090e0a88482a7c

SHA256
7a074a5e9c37cdeff2dde257012b44a75a42451eaa319cc72a346087fbe08c70

SHA512
0c1d2c217fde2a3c5506b0c4c29ad2ef83734d4cbf6ab183c160e53a95be6f28593d3e6489f20201b111e00bf44832f22d467f8056e0e1fd61b691c548b78b25

Download Submit
memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1008-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1008-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1008-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1008-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1612-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1612-25-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/1612-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download