e12e18289caaa5a9bd2d4d7b6acb59f5d5f60e824c4b4e454fb58cde0f1db10d

Analysis

max time kernel
147s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 02:50

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General

Target

2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe
Size

96KB
MD5

cf3eaace859fbe02845560114ef7b236
SHA1

52af03efca73c71d92fbec44c30132bae2ad64b7
SHA256

e12e18289caaa5a9bd2d4d7b6acb59f5d5f60e824c4b4e454fb58cde0f1db10d
SHA512

61a15abaf8b555d86fb44494a9635761063356587f4c8ee30018be0dfc61ac1d4580cc87849e3e78ed875f6cd78808367438067389d46ce86f217daa8fd6e4c7
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp4:V6a+pOtEvwDpjtz7

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_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2692 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2692	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe

description	pid	process	target process
PID 3300 wrote to memory of 2692	3300	2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe	asih.exe
PID 3300 wrote to memory of 2692	3300	2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe	asih.exe
PID 3300 wrote to memory of 2692	3300	2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_cf3eaace859fbe02845560114ef7b236_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3300

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2692

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
97KB

MD5
a576f05e002de540f2de122f2f555a27

SHA1
048b94d7ddc807e0376435489ea236e8d4769e30

SHA256
09596099284e12922817f94cca6582148a60055f4c8cfd5d737f93474d277abc

SHA512
a6854801d229ac545ef735a5a1304f133e00ad77c60334d8cea16b4bf465433718aea891c7f222fe4f0fb925c0e64e102e3dfb4267c67f9ca0182a08a96c6990

Download Submit
memory/2692-17-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2692-18-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/3300-0-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3300-1-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/3300-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download