dc0a4db5abb5eb59ab67da5c063f6da9339f7311655cdb249d69b6fed2bd6a4e

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_4300c5cc31350b98947b25f70810290f_cryptolocker.exe
Size

64KB
MD5

4300c5cc31350b98947b25f70810290f
SHA1

1f61b45b4808c02cedd5d231262267c47be38baa
SHA256

dc0a4db5abb5eb59ab67da5c063f6da9339f7311655cdb249d69b6fed2bd6a4e
SHA512

17f82f7fee2c3c7465eb5eb0d3b5f62e8ff2727bdd6acd71ea3fae3ed51f14dfd6665c1f9dc16e8d6223afcc810f14d645fb0c894e612e62c3441c17b64f2c9e
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xblzogj:X6a+SOtEvwDpjBrOV

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_4300c5cc31350b98947b25f70810290f_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	2024-05-22_4300c5cc31350b98947b25f70810290f_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3008 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3008	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_4300c5cc31350b98947b25f70810290f_cryptolocker.exe

description	pid	process	target process
PID 4712 wrote to memory of 3008	4712	2024-05-22_4300c5cc31350b98947b25f70810290f_cryptolocker.exe	asih.exe
PID 4712 wrote to memory of 3008	4712	2024-05-22_4300c5cc31350b98947b25f70810290f_cryptolocker.exe	asih.exe
PID 4712 wrote to memory of 3008	4712	2024-05-22_4300c5cc31350b98947b25f70810290f_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_4300c5cc31350b98947b25f70810290f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_4300c5cc31350b98947b25f70810290f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4712

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3008

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
65KB

MD5
0ebc2e195eb7365e5f2e951f410b57a4

SHA1
97aee52c8271e784707f2d7d4f82bc39bc232421

SHA256
9911366338040ca131783e2d7a576728567c2b38d28214334fa6f5c2caa961fe

SHA512
6b41ad3a7c76eb90c291c802b2ba37259fc7fb2736d72f0a2760fc027d357d183b3c1c7f8c8256ca405119d643c3edf17669f95ae37bd32838f61e4b477cbadd

Download Submit
memory/3008-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3008-23-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/4712-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4712-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4712-8-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download