680e342ebaeeda359aa09b99ae97330a0a44ae4cc82a14bc54ea7bb57ccd19d0

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
06/03/2024, 05:36

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General

Target

2024-03-06_26d1e8cd1cd75b4fce9e92a49c2c1e1b_cryptolocker.exe
Size

49KB
MD5

26d1e8cd1cd75b4fce9e92a49c2c1e1b
SHA1

fcc74f3dc92d7852044410b9f69cdb2fd949472b
SHA256

680e342ebaeeda359aa09b99ae97330a0a44ae4cc82a14bc54ea7bb57ccd19d0
SHA512

e99c9cbe620c6937b89cddb5ce585da698d9ec3f5e96a0952c0a5f557ac8158e729943ce41c7fa1ee314334fda30072e4ad28f0f6c954cceb5ab0acf1b505c7d
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZD:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-06_26d1e8cd1cd75b4fce9e92a49c2c1e1b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3320	asih.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 2800 wrote to memory of 3320	2800	2024-03-06_26d1e8cd1cd75b4fce9e92a49c2c1e1b_cryptolocker.exe	87
PID 2800 wrote to memory of 3320	2800	2024-03-06_26d1e8cd1cd75b4fce9e92a49c2c1e1b_cryptolocker.exe	87
PID 2800 wrote to memory of 3320	2800	2024-03-06_26d1e8cd1cd75b4fce9e92a49c2c1e1b_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-06_26d1e8cd1cd75b4fce9e92a49c2c1e1b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_26d1e8cd1cd75b4fce9e92a49c2c1e1b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3320

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
49KB

MD5
9982db71f60a051f91fa1fc4c2ff21a4

SHA1
52a1556f6d492c4d49f0efe67e151a1eecdd3650

SHA256
98740b4e588deabceb163c0f5b64f4f34324aa5c9080aff2914088bc370fe987

SHA512
674ed0772393600905f20ccffce48f3512f4a1e2b9ea61e4e9902313854ae76a2c7233d08ce2ce93f0211f0a3b6e05239f5845d563720c9b0f7e84603522486f

Download Submit
memory/2800-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2800-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2800-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3320-17-0x0000000002000000-0x0000000002006000-memory.dmp

Filesize
24KB

Download
memory/3320-19-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download