5772879f270ae05bd4b823107e5fd2db0df948bbaa1da54d380300834e8edfb2

Analysis

max time kernel
141s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 17:48

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General

Target

2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe
Size

125KB
MD5

bfca40b9cd2a4c5fc2b1cf4e67c86e4a
SHA1

fc7ee0315653804f113759d0451646d6af85c4f3
SHA256

5772879f270ae05bd4b823107e5fd2db0df948bbaa1da54d380300834e8edfb2
SHA512

c9bbff2f504904a08b783bfadfc84e0c048ab7c6e5bf49766c8808b5908571cf8f8ee32d3029acb9850dc93441ee40e568c621718e2d7b7da5354863d1a417a2
SSDEEP

1536:gUj+AIMOtEvwDpjNbwQEIPlemUhYwkkxGBpI:vCA9OtEvwDpjk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

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

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\misid.exe	CryptoLocker_set1

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exemisid.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

Processes:

misid.exe

pid process

1336 misid.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1336	misid.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe

description	pid	process	target process
PID 5052 wrote to memory of 1336	5052	2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe	misid.exe
PID 5052 wrote to memory of 1336	5052	2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe	misid.exe
PID 5052 wrote to memory of 1336	5052	2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe	misid.exe

C:\Users\Admin\AppData\Local\Temp\2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_bfca40b9cd2a4c5fc2b1cf4e67c86e4a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5052

C:\Users\Admin\AppData\Local\Temp\misid.exe
"C:\Users\Admin\AppData\Local\Temp\misid.exe"
2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1336

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\misid.exe

Filesize
125KB

MD5
6e30da7a638a6d2a95b288353b140ee5

SHA1
40b57959138503b8e5887c3055b30d3da643007e

SHA256
6217749ec062cd97f4f0e133f90b91cd89f3cea9525b613afe551476db00cd21

SHA512
55bb0e97adbd2e216697c48f7b926b68aec5637b43e0364a8a4993f6e6250e019efe7be77dae5d267d6e62908ea99dcae39405c69492897893c2b10f31412b3f

Download Submit
memory/1336-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/5052-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5052-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5052-2-0x0000000000790000-0x0000000000796000-memory.dmp

Filesize
24KB

Download