ddfafe8b76a491aceea6883e3ae5a40e18beb2eb5d187694a97bc0ed7209eb92

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08/03/2024, 03:18

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General

Target

2024-03-08_fe8c56ac995df6fc0e5ed48e985c672c_cryptolocker.exe
Size

43KB
MD5

fe8c56ac995df6fc0e5ed48e985c672c
SHA1

e7d86b9ecc7d2602fd99c0ea3b909a07e9923162
SHA256

ddfafe8b76a491aceea6883e3ae5a40e18beb2eb5d187694a97bc0ed7209eb92
SHA512

37bad198d433ec75e9655118390110a8f6e98a6adf7e09db2e976f89a5bad5117c2e20bfddf19b027bee5a038a677d273b9af1d08423980cb13d392b2f43f865
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YO6ILRD:V6QFElP6n+gMQMOtEvwDpjyaYaFAz6D

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-08_fe8c56ac995df6fc0e5ed48e985c672c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3384	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 1648 wrote to memory of 3384	1648	2024-03-08_fe8c56ac995df6fc0e5ed48e985c672c_cryptolocker.exe	90
PID 1648 wrote to memory of 3384	1648	2024-03-08_fe8c56ac995df6fc0e5ed48e985c672c_cryptolocker.exe	90
PID 1648 wrote to memory of 3384	1648	2024-03-08_fe8c56ac995df6fc0e5ed48e985c672c_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-08_fe8c56ac995df6fc0e5ed48e985c672c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_fe8c56ac995df6fc0e5ed48e985c672c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3384

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
44KB

MD5
95998eca1581102978f5c66d41c60ae7

SHA1
000b96346c6d5bcb6aa00d1090d00042d25e76a7

SHA256
746d8aef972fdc4555f8058e05259fc0ed8ed7250e1aec6f9465e55384962657

SHA512
73026172e93034d7cfc2ad112719092485ae2ed1e307c22c0e48484c72373d1c5fbdff0887a549464b28e22935312d9537e499457eae6446294f95e9d6c78695

Download Submit
memory/1648-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/1648-2-0x0000000002240000-0x0000000002246000-memory.dmp

Filesize
24KB

Download
memory/1648-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3384-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3384-23-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download