1a07d36518f9de32a3b29c083e553e21f6b03b34201920480c8f9b820968a336

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
07/03/2024, 18:56

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General

Target

2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe
Size

49KB
MD5

ae4ed7d2da881f0cd252ef93f4fdb6ed
SHA1

a7432564f9f332255da07763fe3d5e5281ad66de
SHA256

1a07d36518f9de32a3b29c083e553e21f6b03b34201920480c8f9b820968a336
SHA512

59139134df7bae3dde5707162691285a1bacc8310418f4fccab083b356b749a635600f4a692dec85749a80412ba5f8acd0640dae82feec109c1a051108ac4541
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDlC6JFbK37Yl6dIKld5CSn:bgGYcA/53GAA6y37Q6dI+d5v

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e5eb-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-1-5-21-983155329-280873152-1838004294-1000\Control Panel\International\Geo\Nation	2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3884	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 3724 wrote to memory of 3884	3724	2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe	87
PID 3724 wrote to memory of 3884	3724	2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe	87
PID 3724 wrote to memory of 3884	3724	2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_ae4ed7d2da881f0cd252ef93f4fdb6ed_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3724
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3884

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
49KB

MD5
662c242adf7899b48754724fd9523ec5

SHA1
f429b46b62322922eddc5dc78461bced5a8155a1

SHA256
d8f472c7bb7a15e20c512a76f7ab052dc337e2524d1def0102d07d002c38ec4f

SHA512
108cb70b956ebb0dcd470dad61fc4d42344f1e220a1596ac490c1859d760472c8a4cefc5b09da35a5993111348eeef09bb21895e6f983ba983c603635d9b7c19

Download Submit
memory/3724-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3724-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3724-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/3884-17-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download
memory/3884-18-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download