1961ecc5ee556a9d75adfbd7ed262ebb61fbf6fefabe61bd4a9451bed3a945c6

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
02/05/2024, 10:52

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General

Target

2024-05-02_be4ef9318776e3ea23e4f8d456e76aa8_cryptolocker.exe
Size

51KB
MD5

be4ef9318776e3ea23e4f8d456e76aa8
SHA1

cd176453850006cbbc2777ec24accfdcd638f7dc
SHA256

1961ecc5ee556a9d75adfbd7ed262ebb61fbf6fefabe61bd4a9451bed3a945c6
SHA512

3717edf54076a3f64296359fe07df3d8266ef02c8dcd8b3e6302980821230addeb77104a1b50571662c8022e350433742ad05d5645531a3eb6b43e6e95e70e96
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaH:X6QFElP6n+gJBMOtEvwDpjBtExml/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b5b-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b5b-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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-05-02_be4ef9318776e3ea23e4f8d456e76aa8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5116	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 4180 wrote to memory of 5116	4180	2024-05-02_be4ef9318776e3ea23e4f8d456e76aa8_cryptolocker.exe	84
PID 4180 wrote to memory of 5116	4180	2024-05-02_be4ef9318776e3ea23e4f8d456e76aa8_cryptolocker.exe	84
PID 4180 wrote to memory of 5116	4180	2024-05-02_be4ef9318776e3ea23e4f8d456e76aa8_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-02_be4ef9318776e3ea23e4f8d456e76aa8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_be4ef9318776e3ea23e4f8d456e76aa8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4180
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5116

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
51KB

MD5
2108adac2f4bfce43a61e8cf35eb7411

SHA1
b01d405662d83ae96228dcd4f6dd619de19b22f3

SHA256
b91d0e504e3d23def6065659da19bce9bc599768605b7e583aa8228220e8fa6b

SHA512
50b088b859de59727ac753402b145a2520297ffcb98b1a4c075c0b6da7402b27b2ebfa9cdab37b3c191506b41a148a7ffbfee343f68f551f06faeeb71081cb43

Download Submit
memory/4180-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4180-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4180-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5116-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/5116-23-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download