c543b0f7362dbcbf7860e0b7cf66a5c8294db9ef11466d30eee343fc1e2414a2

Analysis

max time kernel
48s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
02-02-2024 02:27

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General

Target

2024-02-02_34e8c1af6f3988fd0aa0aec50af54636_cryptolocker.exe
Size

46KB
MD5

34e8c1af6f3988fd0aa0aec50af54636
SHA1

1acfeaa88bd13c1091eda86c08a8305245594e7b
SHA256

c543b0f7362dbcbf7860e0b7cf66a5c8294db9ef11466d30eee343fc1e2414a2
SHA512

fdfed4f5bcd2cb51315b22ff658a3d7670745b948c665371988e565ca73487d003b1e26ac192aa83309ec17203e6195511f83bfe0f464d118c3fa03d02201a2d
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dd3H:bgGYcA/53GAA6y37Q6dd3H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231fd-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-02-02_34e8c1af6f3988fd0aa0aec50af54636_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2924	hasfj.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4696 wrote to memory of 2924	4696	2024-02-02_34e8c1af6f3988fd0aa0aec50af54636_cryptolocker.exe	84
PID 4696 wrote to memory of 2924	4696	2024-02-02_34e8c1af6f3988fd0aa0aec50af54636_cryptolocker.exe	84
PID 4696 wrote to memory of 2924	4696	2024-02-02_34e8c1af6f3988fd0aa0aec50af54636_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-02_34e8c1af6f3988fd0aa0aec50af54636_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_34e8c1af6f3988fd0aa0aec50af54636_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4696
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2924

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
47KB

MD5
edf815bf6c17647d748009eddadf5ff2

SHA1
38dc63b2f4dc8f5f303b577cab74985dacef2192

SHA256
ed6cbb54e565052c59eb7a140d8827b67e2b9278aef32f68cc819db473c4dbbf

SHA512
51aecd3f4b46dbbcbb341e0e6ee517762175ced7734fa5cf3875a7769e495e53a5bc3f94663d12e195f5a9a79038851a9a9504c7de67e229aae6a541ac69b87f

Download Submit
memory/2924-19-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2924-17-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/4696-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4696-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/4696-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download