f1634a2ef6694bab4b76a02fef5c3e3c224419240cdf0314b4388c395304c8f6

Analysis

max time kernel
150s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
12-02-2024 09:51

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General

Target

2024-02-12_ea0e1999466a00da2216a380c360c51a_cryptolocker.exe
Size

58KB
MD5

ea0e1999466a00da2216a380c360c51a
SHA1

aa5b3c3bb45646b2c50c8c7ac42b2a6012b76e9b
SHA256

f1634a2ef6694bab4b76a02fef5c3e3c224419240cdf0314b4388c395304c8f6
SHA512

ee805368e9ec07a55e5683f26b7a503cc4a3f31db06ed80e482b7ed0690a64b7199204efd7816ceddd716cb76225f8588334182a723b81d97d9d4de37cb59d94
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbt7gY:V6a+pOtEvwDpjvA

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320c-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002320c-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-02-12_ea0e1999466a00da2216a380c360c51a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3956	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 4344 wrote to memory of 3956	4344	2024-02-12_ea0e1999466a00da2216a380c360c51a_cryptolocker.exe	84
PID 4344 wrote to memory of 3956	4344	2024-02-12_ea0e1999466a00da2216a380c360c51a_cryptolocker.exe	84
PID 4344 wrote to memory of 3956	4344	2024-02-12_ea0e1999466a00da2216a380c360c51a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-12_ea0e1999466a00da2216a380c360c51a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-12_ea0e1999466a00da2216a380c360c51a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4344
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3956

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
58KB

MD5
0db04f9298b5f4bab19dc363aeccd693

SHA1
ad0523687abe1463040229fd1e241593fcde4b29

SHA256
b18d1dc7754fc4639988c20c3064282a28bda2ea50041d2c11e7251cf8622d88

SHA512
045226829d68fc232ddb7c9b3d69a7db4320365d3a7d98b794b32f0a97d9ac444c89bf837f147eb345746b3c60f491b24d8503e112e2ca11c158f0ecfa4f26a1

Download Submit
memory/3956-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3956-18-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4344-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4344-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4344-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download