f47746d1db9cdfa47c27a776df13b873c2ab7a4d5527ed0242ef4a375f139a3a

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 06:11

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General

Target

2024-02-20_d5b33dd1d7b5ea09a3953ae8105a8cb9_cryptolocker.exe
Size

99KB
MD5

d5b33dd1d7b5ea09a3953ae8105a8cb9
SHA1

bc47b72b3cefe149937dd28d53e824d0d7f5b76e
SHA256

f47746d1db9cdfa47c27a776df13b873c2ab7a4d5527ed0242ef4a375f139a3a
SHA512

357e58e7136e87839b680f82965d8d43c0317860ecfafcdaef93b76d6377234bb983cb0416fff8b7b5acab0a4dd1d151eab24d140b3d008781cd0ea97d6a98ee
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpQbCJjR:V6a+pOtEvwDpjtzu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023226-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023226-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-02-20_d5b33dd1d7b5ea09a3953ae8105a8cb9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
432	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 2964 wrote to memory of 432	2964	2024-02-20_d5b33dd1d7b5ea09a3953ae8105a8cb9_cryptolocker.exe	83
PID 2964 wrote to memory of 432	2964	2024-02-20_d5b33dd1d7b5ea09a3953ae8105a8cb9_cryptolocker.exe	83
PID 2964 wrote to memory of 432	2964	2024-02-20_d5b33dd1d7b5ea09a3953ae8105a8cb9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-20_d5b33dd1d7b5ea09a3953ae8105a8cb9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_d5b33dd1d7b5ea09a3953ae8105a8cb9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:432

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
99KB

MD5
8e747fe799308c17a5f650dff3562a63

SHA1
ff77ae1047f9216d5608a074c40826bb399d3e7f

SHA256
379a0d5df2ac499347a880b3a502f2b9e9cdaa5e9316cfddffb302235d701de9

SHA512
b40b6dfc7daf617f698b5288ecf541daa501a7893ca9dc71480e12884b78a91fe961979fa4e3330778c9f4bc70b54c960fd2789f2a0dfd5ec2a4aaa57da88468

Download Submit
memory/432-18-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/432-17-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download
memory/2964-0-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2964-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2964-2-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download