70a058f48aaa7528843e3fa33dc7ba85fc7860930128ed049e54efd75dd2c1e5

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
21-05-2024 14:32

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General

Target

2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe
Size

46KB
MD5

cf06a6f14e67bf70c3659fd2b90ec9d8
SHA1

5939fbc374f66acc4baeeb262838a8e6c5f7c621
SHA256

70a058f48aaa7528843e3fa33dc7ba85fc7860930128ed049e54efd75dd2c1e5
SHA512

3a46713eddef6f6f01e0cf9a4dd98e9f24143ce279132e8e339c688a0a16ef8679fc59475fb23bbf12a94ed5e641570b86d2a838cf491c73d04d8e81ca0f974d
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsJE:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3x

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:

2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2696 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2696	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe

description	pid	process	target process
PID 2240 wrote to memory of 2696	2240	2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe	asih.exe
PID 2240 wrote to memory of 2696	2240	2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe	asih.exe
PID 2240 wrote to memory of 2696	2240	2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_cf06a6f14e67bf70c3659fd2b90ec9d8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2240

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2696

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
46KB

MD5
be0bbbb8b46c958d15d5dfee0f5e2d31

SHA1
d01011c64c2957611fe4ad1cee01e10cc084ee51

SHA256
5016e990288299917c77e6ca346ac519b8105efccc2fd23f77c5ce4e84cef42b

SHA512
704e17c581194e4bab09a5b8edea2f7f69d99baf2ce41347b7fdacf5f85d4d5a5d0c48479cbc986ed375610c6c93d013a2b94b6a952eb8ef1e9fb6af79bbf4e1

Download Submit
memory/2240-0-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2240-8-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2696-18-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2696-17-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download