38c3868a6f845d0591ecf9029a5f8de4cbef117499d7e8bfd09ed2de5b558430

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
21/04/2024, 04:26

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General

Target

2024-04-21_c11906a69ba95b1fd9e434b8fd6204cf_cryptolocker.exe
Size

55KB
MD5

c11906a69ba95b1fd9e434b8fd6204cf
SHA1

0fbffb0395b6ecb5f6bd647310578ff19a2a881a
SHA256

38c3868a6f845d0591ecf9029a5f8de4cbef117499d7e8bfd09ed2de5b558430
SHA512

fa69db4ce10e43a0456f0373a5192d1832d5ba974e050e720aab55d0c088b35c31a4eddae1f4a0a57c8190200c0700cd35a85690d98eddedc87701decae7f704
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vaTiSfQaV2LJ2:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ2

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e970-12.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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	2024-04-21_c11906a69ba95b1fd9e434b8fd6204cf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2352	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 3148 wrote to memory of 2352	3148	2024-04-21_c11906a69ba95b1fd9e434b8fd6204cf_cryptolocker.exe	86
PID 3148 wrote to memory of 2352	3148	2024-04-21_c11906a69ba95b1fd9e434b8fd6204cf_cryptolocker.exe	86
PID 3148 wrote to memory of 2352	3148	2024-04-21_c11906a69ba95b1fd9e434b8fd6204cf_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-21_c11906a69ba95b1fd9e434b8fd6204cf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_c11906a69ba95b1fd9e434b8fd6204cf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3148
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2352

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
56KB

MD5
d611e7990816d8389de3650007f6d33e

SHA1
8c133a265f1af53b72e0e04fc95bd12ff158211b

SHA256
336b962e4fc2b3cab929452ba566acfcc3b8577a164461573228ff1e334a378d

SHA512
4aeb97c9b1e464a100a124ba931bac28ee8ec5633f2d350c36dc0560bad91857641a0904675d9538f0882be72a43a2ea8101bdc99eb60345017271a74233797d

Download Submit
memory/2352-17-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2352-23-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/3148-0-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/3148-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/3148-2-0x0000000002220000-0x0000000002226000-memory.dmp

Filesize
24KB

Download