546518a648c254cfa95299873e9c6872827b064447fc47f6b50e8c78d7d97bdf

Analysis

max time kernel
150s
max time network
147s
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 20:21

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General

Target

2024-02-12_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe
Size

41KB
MD5

d104ff42f4a3e1802c80dd2e6ee96a85
SHA1

f4def39f80375602d6c2999dc2f5254093aec73b
SHA256

546518a648c254cfa95299873e9c6872827b064447fc47f6b50e8c78d7d97bdf
SHA512

2f6281e59d74f54e5d6ae6c67bb02422da5b1fae53b34921fe3b26796b1576f00b296920f08fcf8fafa7bf1c4f4d5f1b3c21a8cfd2c5bc224a0301ee2b202f85
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37YbD4Is:bgGYcA/53GAA6y374s

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2

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_d104ff42f4a3e1802c80dd2e6ee96a85_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_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

4940 hasfj.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4940	hasfj.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe

description	pid	process	target process
PID 5100 wrote to memory of 4940	5100	2024-02-12_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe	hasfj.exe
PID 5100 wrote to memory of 4940	5100	2024-02-12_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe	hasfj.exe
PID 5100 wrote to memory of 4940	5100	2024-02-12_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_d104ff42f4a3e1802c80dd2e6ee96a85_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5100

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:4940

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\hasfj.exe

Filesize
41KB

MD5
f23f74262b9adeb6e30d1c7cc667f560

SHA1
b2da9ba02bdb7bd841827493f34eea63a6151f66

SHA256
e44788954d40a114a54d4b72e3f0a8222501da241dd737c2064090c8ee6d4c9a

SHA512
a41f6be988bc33fb67242c926d8273836390428012255872a26f5082a23bbcdbaa695b61c60704697e07a42701a2eb6b9b35e97daca8c2a20aa295f92c5bc209

Download Submit
memory/4940-19-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4940-17-0x0000000002ED0000-0x0000000002ED6000-memory.dmp

Filesize
24KB

Download
memory/5100-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5100-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5100-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download