5d60d964a566dc39fc654e2a8d6d877c9f1b6bb8ca64438f450b810805f9ebba

Analysis

max time kernel
0s
max time network
144s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18-01-2024 22:40

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General

Target

2024-01-18_4135a69adb156e7c2a94376e21023479_cryptolocker.exe
Size

36KB
MD5

4135a69adb156e7c2a94376e21023479
SHA1

a9260cc49d5622cb93d3d1a7b2647a76e45f1e02
SHA256

5d60d964a566dc39fc654e2a8d6d877c9f1b6bb8ca64438f450b810805f9ebba
SHA512

9ee7a13fe5a6f7d3c3ed7f9512907b20044853cc74f2eb9842211adc12c4f9b633acf83f7b03ec06f825a58849285698a04fcb3de9a4749ab379dd9ac51c8a11
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFCpa:X6QFElP6n+gJQMOtEvwDpjBmzDUpa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000001e5df-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000001e5df-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-18_4135a69adb156e7c2a94376e21023479_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3640	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 4480 wrote to memory of 3640	4480	2024-01-18_4135a69adb156e7c2a94376e21023479_cryptolocker.exe	52
PID 4480 wrote to memory of 3640	4480	2024-01-18_4135a69adb156e7c2a94376e21023479_cryptolocker.exe	52
PID 4480 wrote to memory of 3640	4480	2024-01-18_4135a69adb156e7c2a94376e21023479_cryptolocker.exe	52

C:\Users\Admin\AppData\Local\Temp\2024-01-18_4135a69adb156e7c2a94376e21023479_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_4135a69adb156e7c2a94376e21023479_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4480
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3640

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
37KB

MD5
a99388b0e68f438718292ef7f5a29b94

SHA1
a30612c92fe55796fafd4d827868ec57e74e7c97

SHA256
89df2255c91f48cb6b3c56c42d731960cacd989e1a1ecd9232260007b6e19a13

SHA512
e7b9591a5b9379bd84ce67e2e25ce6024033e6dee69bf8b5dd766e8da103c2b5a9611772c93a1a5452e84f5d2679cfa4d34e822c80ad28eadffd3eee8972e025

Download Submit
memory/3640-23-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3640-17-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/4480-2-0x0000000000540000-0x0000000000546000-memory.dmp

Filesize
24KB

Download
memory/4480-1-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/4480-0-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download