8434ff7b994655e5dcb9f3df0ddc5e652ebf74d4ebe6b4603a8ab5333dc08e0d

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
24/02/2024, 22:25

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General

Target

2024-02-24_36b10e442dc3da529d71dbb7e866d1ce_cryptolocker.exe
Size

94KB
MD5

36b10e442dc3da529d71dbb7e866d1ce
SHA1

4cdd6981388d97f9c323d6666bdb93f0ee6b8da6
SHA256

8434ff7b994655e5dcb9f3df0ddc5e652ebf74d4ebe6b4603a8ab5333dc08e0d
SHA512

7ef913b840db95702ee90a3cc6867a7f7fd5a663be1f632caa6b06b7131a88a10706b0372b25f5316df029e8912533647948c681fc5bd581534a9683ad1512fd
SSDEEP

1536:Z6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNC42P:Z6a+pOtEvwDpjtz0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e96f-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-1-5-21-1392040655-2056082574-619088944-1000\Control Panel\International\Geo\Nation	2024-02-24_36b10e442dc3da529d71dbb7e866d1ce_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4832	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 4796 wrote to memory of 4832	4796	2024-02-24_36b10e442dc3da529d71dbb7e866d1ce_cryptolocker.exe	89
PID 4796 wrote to memory of 4832	4796	2024-02-24_36b10e442dc3da529d71dbb7e866d1ce_cryptolocker.exe	89
PID 4796 wrote to memory of 4832	4796	2024-02-24_36b10e442dc3da529d71dbb7e866d1ce_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-02-24_36b10e442dc3da529d71dbb7e866d1ce_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_36b10e442dc3da529d71dbb7e866d1ce_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4796
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4832

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\asih.exe

Filesize
94KB

MD5
aca2d6497c00bf0fcd3cac715aa7c02a

SHA1
157d203d0a1a2cbad23750aa9d4d13fa05f2e753

SHA256
ccdd4322ce89b3aebf259999137646480742ffaaef854eda988351327b3bd375

SHA512
cfb0bff5399f2f1587be44c4b7fe5acbe1665290bb67e0998e2c8e754026c30a7782e4f63fcded8d08dd2f124614b1ac3687b9b5a27b95bd1052d8294c7e2e24

Download Submit
memory/4796-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4796-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4796-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4832-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4832-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download