3bef42cf8c6f87c7b4a51d4e566d34a980aac8545664c4f6c4b5723d1514c40f

Analysis

max time kernel
148s
max time network
151s
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 00:44

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General

Target

2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe
Size

41KB
MD5

41587a3b9b14e1abc6b6afc019c07525
SHA1

93ae2c0b535581dbaca624f673128b448f386d58
SHA256

3bef42cf8c6f87c7b4a51d4e566d34a980aac8545664c4f6c4b5723d1514c40f
SHA512

12743e4fcc56af94d9e2785e7f0c41d1c025b185d2a62d14298854dab1ea7ee74f60b4bd5618639ceb91eb80605864d4beac0a18f9c49cfb430f1ded336ea37f
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfr9Orj:X6QFElP6n+gJQMOtEvwDpjBsYK6r0rj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	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_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4576 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4576	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe

description	pid	process	target process
PID 3940 wrote to memory of 4576	3940	2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe	asih.exe
PID 3940 wrote to memory of 4576	3940	2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe	asih.exe
PID 3940 wrote to memory of 4576	3940	2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_41587a3b9b14e1abc6b6afc019c07525_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3940

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4576

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
42KB

MD5
57ee2cb2561a6e6d1b4b05e092ecb94a

SHA1
bee0eab8f703b8f92fe0e6c2dae627678faae9b6

SHA256
3d86ecd1e1c541263ba7fee660e56a99e4d6fa085a5c20d776de67865b38a612

SHA512
7cdd8841ccff872774a8039c4169b7bcef47f52eb5b647db5ee7bf0ca66ce2e4dbf161dda9eee5282c879972f1d11036654e0ef2d9333f38172c2439f8f923ec

Download Submit
memory/3940-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3940-1-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3940-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4576-18-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4576-17-0x0000000002140000-0x0000000002146000-memory.dmp

Filesize
24KB

Download