387e80feed59c6269d9fcf9d5e0b32327d0fe170ea1ca69bf3ffd2ca66f3df32

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 05:13

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General

Target

2024-02-24_c8f15b517b15738628c740b70c70d799_cryptolocker.exe
Size

48KB
MD5

c8f15b517b15738628c740b70c70d799
SHA1

46ac21d6145d861dc02b00277bfd4236ebc7908c
SHA256

387e80feed59c6269d9fcf9d5e0b32327d0fe170ea1ca69bf3ffd2ca66f3df32
SHA512

9a31ed3234965f611263b2c14d059d7e682e3cfb8ee697e77d46146210b91ce113262720f6cd7b41d97de8a55450392ce612f731b8094308bdaf702a5efdb545
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZRQK:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f4-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f4-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2132103209-3755304320-2959162027-1000\Control Panel\International\Geo\Nation	2024-02-24_c8f15b517b15738628c740b70c70d799_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2020	asih.exe

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 4392 wrote to memory of 2020	4392	2024-02-24_c8f15b517b15738628c740b70c70d799_cryptolocker.exe	86
PID 4392 wrote to memory of 2020	4392	2024-02-24_c8f15b517b15738628c740b70c70d799_cryptolocker.exe	86
PID 4392 wrote to memory of 2020	4392	2024-02-24_c8f15b517b15738628c740b70c70d799_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-02-24_c8f15b517b15738628c740b70c70d799_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_c8f15b517b15738628c740b70c70d799_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4392
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2020

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
49KB

MD5
871f9e6e49162cc9710d15bcb1879330

SHA1
f8b4992e56d6c4f51b37cd30acef10fcbe3ccd6c

SHA256
f954b65e84414985093448f967e2b3666e0028f0653da8960bd860bbada12385

SHA512
d905618a8a63426e4dc33d62a4611a188693204b426dee72a63455cd790ab3107fc0547afab324f65ff3f8b0c7f735c75c22ed355e7b23b3d3e3ed47dd24fe4c

Download Submit
memory/2020-17-0x0000000000690000-0x0000000000696000-memory.dmp

Filesize
24KB

Download
memory/2020-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4392-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4392-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4392-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download