fa3d56cbe99e48cf4041a7e70630f60b323cdb15342e342065310d27b245eb3d

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 18:31

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General

Target

2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe
Size

38KB
MD5

e3a32a3cfa4a50415a60692e4e8cca0b
SHA1

1ec4d7ae2607533f0476e95c23279d6c97d0ade0
SHA256

fa3d56cbe99e48cf4041a7e70630f60b323cdb15342e342065310d27b245eb3d
SHA512

bb399165bb203b4e16dbff64a2812b9ba9655725f47710ac4e0a9860f49b28fa634d55d84be0b9b53580d029643d18a09434efb10a2abb4cf47335443fe9bc0a
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HKcfw:X6QFElP6n+gJQMOtEvwDpjBsYK6w

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:

2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3908 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3908	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe

description	pid	process	target process
PID 4804 wrote to memory of 3908	4804	2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe	asih.exe
PID 4804 wrote to memory of 3908	4804	2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe	asih.exe
PID 4804 wrote to memory of 3908	4804	2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_e3a32a3cfa4a50415a60692e4e8cca0b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4804

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3908

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
38KB

MD5
84431f5c640708826c9d31e0d1e34124

SHA1
473a685fd8c9f4b99b5ad9a93018475ba3ce736b

SHA256
d8dbc236229e86e19bba8c41aa7d36306809396c10aaedd5786facd9934f1ef4

SHA512
bd378bbe263d3f8ec2f445de3caec2fbfb3eb856c29ce969513d4fa40d0ef1f0ae7d84129f92cc2461c58fe89b4c65cd3f0a4128c90e6f0d62c2ff163a4f21c4

Download Submit
memory/3908-17-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/3908-19-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4804-0-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4804-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4804-2-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download