efc847b8b22dabeb00e19343831018c9cfea125c6885524aefbf6cb3dfe16a25

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18-04-2024 05:46

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General

Target

2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe
Size

389KB
MD5

57dc53d4c436d7f20e14905df7e355d8
SHA1

8d4288bf8c6d9b33b92305596e312782911d90d2
SHA256

efc847b8b22dabeb00e19343831018c9cfea125c6885524aefbf6cb3dfe16a25
SHA512

8d974f2f2ded35d4900267d1a165d06691e2942b1fb5db079ec0b2ebaf7756c2f4d74a48bf44e501080d2e78255556e28859c9ebc5a65559d23edc694f71a612
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzX3:nnOflT/ZFIjBz3xjTxynGUOUhX3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023418-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
380	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 4756 wrote to memory of 380	4756	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe	86
PID 4756 wrote to memory of 380	4756	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe	86
PID 4756 wrote to memory of 380	4756	2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_57dc53d4c436d7f20e14905df7e355d8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:380

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
389KB

MD5
36e877283893aefdc9b70a80a87b200a

SHA1
923ccc012ef7d7c9a37a20276b2a01cbd541effb

SHA256
21dcf7238c7d41ed939223c4f761a25b5bf250ef8561de58f61ff20c57963e86

SHA512
c952c68663187aa5b1ea2edfbe66bff4139b6690b903b751ab842962138e2eca3c77bf0d463098034aa154f2ee356ee08ec1582a6fa605eea831e6e5ddcfce8d

Download Submit
memory/380-19-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/380-17-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/4756-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4756-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4756-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download