8c45fae91073df81161c36b0cb68005ff820f019f5fde8cee89dc2014cb2a81c

Analysis

max time kernel
141s
max time network
165s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19-04-2024 09:24

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General

Target

2024-04-19_158e4dd00489568c0596cb5175e4c215_cryptolocker.exe
Size

49KB
MD5

158e4dd00489568c0596cb5175e4c215
SHA1

793ea3301201f8aaac8772c431b841fe42d44af6
SHA256

8c45fae91073df81161c36b0cb68005ff820f019f5fde8cee89dc2014cb2a81c
SHA512

9d54d14ea24e3db2c3d09c38e7004f35ed51ba0a50e97680108af2ca9691e6bf3f078d75c9af101257cae74fa420d2e74d5b554c1251150778c3e258c01944a2
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu55id3AMWZF:X6QFElP6n+gJQMOtEvwDpjB0GIWiWLr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002350a-11.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002350a-11.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-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	2024-04-19_158e4dd00489568c0596cb5175e4c215_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3148	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 1452 wrote to memory of 3148	1452	2024-04-19_158e4dd00489568c0596cb5175e4c215_cryptolocker.exe	94
PID 1452 wrote to memory of 3148	1452	2024-04-19_158e4dd00489568c0596cb5175e4c215_cryptolocker.exe	94
PID 1452 wrote to memory of 3148	1452	2024-04-19_158e4dd00489568c0596cb5175e4c215_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-04-19_158e4dd00489568c0596cb5175e4c215_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_158e4dd00489568c0596cb5175e4c215_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1452
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3148

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
49KB

MD5
201f0d00c77eba7dc2a6dd37831dd187

SHA1
c3419e5167d875d32761882ff60e6664e42dd53a

SHA256
340a808b7797877c201c8fa704cfc4b92637ab611bee8ae7f7563115e7b140be

SHA512
82d78630f4c6f2b21e8e7f04c6fa6d0a141fccb56c5634aba456e50415f7c9f5bfb1b8143ddfa711e156fd9b75a546f894bf54e50aeceb11a1dd687c0b7125fa

Download Submit
memory/1452-0-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1452-1-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1452-2-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3148-17-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3148-19-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download