6bdc380b9bec289e536d5dc07cfac29457a9c783cb42cc6a21e08cd6da60e9b2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:30

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General

Target

2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe
Size

73KB
MD5

4343130078e7b0916272a1ef4bb973ff
SHA1

129c725ad4ffde537ecf0325013aeee0de949d66
SHA256

6bdc380b9bec289e536d5dc07cfac29457a9c783cb42cc6a21e08cd6da60e9b2
SHA512

97c73b022162c30a3b0fa3c14a1e220fe935e29a1c22dae3fa89604f563e5c53d76802f54762a2729c8b2126dc65d6177677fbe1fd61b1d79eabf1d6b930f5af
SSDEEP

768:u6LsoEEeegiZPvEhHSG+gZgtOOtEvwDpjeY10Y/YMsZ:u6QFElP6n+gWMOtEvwDpjJGYQbZ

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:

2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4556 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4556	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe

description	pid	process	target process
PID 3104 wrote to memory of 4556	3104	2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe	asih.exe
PID 3104 wrote to memory of 4556	3104	2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe	asih.exe
PID 3104 wrote to memory of 4556	3104	2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_4343130078e7b0916272a1ef4bb973ff_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3104

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4556

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
73KB

MD5
2f89881ebd841926086112dbe67a0d7c

SHA1
27bb28be4fe09065c8c828b4b9ab3e2dc12641fa

SHA256
f9ea87cb6b61ccd974c0c5404f55190d5c13ec4667ed9cf5074ffd0ba29b2b55

SHA512
0deadbd7824f659a87c3cece489279c26335efc01251349a029abfe3c2f472f7f2861c7c3217157e039d47615c12eec74c76378883145fe4b7a06a2be3c97ee6

Download Submit
memory/3104-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/3104-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/3104-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4556-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4556-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download