b0e46ec37603e725e7e15b56b36ab7bedd19e0927b2ca8b7c63340bf404099dd

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
19-02-2024 09:22

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General

Target

2024-02-19_0af0ae5e7bc0d018527c3dc1dd085d3d_cryptolocker.exe
Size

47KB
MD5

0af0ae5e7bc0d018527c3dc1dd085d3d
SHA1

4f7c9dcb99664240a9e524f49adbf3bb0698b95e
SHA256

b0e46ec37603e725e7e15b56b36ab7bedd19e0927b2ca8b7c63340bf404099dd
SHA512

ffa131d7699b7c24484378a7ddd40bddf5df3e49fccc07628ba9de5f676a09ee07e75dbb2db71d9dd7ec62f19beae15808df8bd184a048b78ace4caa9215f855
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3wwsr0B:X6QFElP6n+gJQMOtEvwDpjBDG

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231d6-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231d6-12.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	2024-02-19_0af0ae5e7bc0d018527c3dc1dd085d3d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4660	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 2444 wrote to memory of 4660	2444	2024-02-19_0af0ae5e7bc0d018527c3dc1dd085d3d_cryptolocker.exe	84
PID 2444 wrote to memory of 4660	2444	2024-02-19_0af0ae5e7bc0d018527c3dc1dd085d3d_cryptolocker.exe	84
PID 2444 wrote to memory of 4660	2444	2024-02-19_0af0ae5e7bc0d018527c3dc1dd085d3d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-19_0af0ae5e7bc0d018527c3dc1dd085d3d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_0af0ae5e7bc0d018527c3dc1dd085d3d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2444
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4660

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
47KB

MD5
ba4ad1bf87e512ae9883d319ee5eb641

SHA1
e75c33279fa45dc0c6a18c4a8d37948815bf319d

SHA256
2a18028d9dbf1b45d2ee76c977626409eec18e2140e80fe78a961de61775bfd0

SHA512
f134b056263345498b05fb6ccb0587d67cc5274ed530f12d35718107c784340b569682ab9d323cff1840c8f848b7b31af48bf999329d890714b8f6f37df99d31

Download Submit
memory/2444-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2444-1-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/2444-2-0x00000000021B0000-0x00000000021B6000-memory.dmp

Filesize
24KB

Download
memory/4660-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/4660-18-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download