51f74b38455ed0f1ee9e1408ce988d2d3fd732e8bdc32ee1e40648a951fc78bd

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
08/05/2024, 03:32

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General

Target

2024-05-08_7734bbd1982271c9b94e3f59e99fad3b_cryptolocker.exe
Size

51KB
MD5

7734bbd1982271c9b94e3f59e99fad3b
SHA1

215622fd097224e101631c770fb26a27ad124c87
SHA256

51f74b38455ed0f1ee9e1408ce988d2d3fd732e8bdc32ee1e40648a951fc78bd
SHA512

45de0f1218b411550bb04a776e0d14b9612eaa353c13fca775554ab0cc8e64835e7748c39909f454cd65f7b3e51c0883605736e2fc7ab7ca23225e4aeace5d62
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vxmlcaf2A:X6QFElP6n+gJBMOtEvwDpjBtExmln2A

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	2024-05-08_7734bbd1982271c9b94e3f59e99fad3b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4688	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 1524 wrote to memory of 4688	1524	2024-05-08_7734bbd1982271c9b94e3f59e99fad3b_cryptolocker.exe	84
PID 1524 wrote to memory of 4688	1524	2024-05-08_7734bbd1982271c9b94e3f59e99fad3b_cryptolocker.exe	84
PID 1524 wrote to memory of 4688	1524	2024-05-08_7734bbd1982271c9b94e3f59e99fad3b_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-08_7734bbd1982271c9b94e3f59e99fad3b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-08_7734bbd1982271c9b94e3f59e99fad3b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4688

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
52KB

MD5
e9a463b3a64881abea86415e6dee27d7

SHA1
7f4015c95a819257b9f7123e82b96250ed21c632

SHA256
463373d2908b418c69189a8620c16d492b91d4de34a671595838a18683dbeb55

SHA512
e5ab92391390dc1ba9756438a700d4dd098e5a88f87dbf8bda1fa2b36f6000aebd9be0ba6d8452ffcf62dc88ba28d35c393e6c6048da8578ca99052392235d04

Download Submit
memory/1524-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1524-1-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1524-8-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4688-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4688-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download