88697c88dc3258915fe1fb68bc43cf6898be04531f0296e61b8e903fdf59c308

Analysis

max time kernel
141s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
13-02-2024 17:57

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General

Target

2024-02-13_81f10baa537ae8426559c3f7ef36e3dc_cryptolocker.exe
Size

37KB
MD5

81f10baa537ae8426559c3f7ef36e3dc
SHA1

5e413bced5076568911c5ec4a192e95df9cbe41d
SHA256

88697c88dc3258915fe1fb68bc43cf6898be04531f0296e61b8e903fdf59c308
SHA512

42704f51c3316673c8951f27f3bb0c77f1d413607ad2fec2581e1a5ba346e903863228096d910a74586c3723c760549d36a106e3bf2731d65590b5f4ca5d6852
SSDEEP

768:bxNQIE0eBhkL2Fo1CCwgfjOg1tsJ6zeen7JEgx34:bxNrC7kYo1Fxf3s06gK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023164-12.dat	CryptoLocker_rule2

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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-02-13_81f10baa537ae8426559c3f7ef36e3dc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2120	pissa.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 2844 wrote to memory of 2120	2844	2024-02-13_81f10baa537ae8426559c3f7ef36e3dc_cryptolocker.exe	84
PID 2844 wrote to memory of 2120	2844	2024-02-13_81f10baa537ae8426559c3f7ef36e3dc_cryptolocker.exe	84
PID 2844 wrote to memory of 2120	2844	2024-02-13_81f10baa537ae8426559c3f7ef36e3dc_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-13_81f10baa537ae8426559c3f7ef36e3dc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_81f10baa537ae8426559c3f7ef36e3dc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2844
- C:\Users\Admin\AppData\Local\Temp\pissa.exe
  "C:\Users\Admin\AppData\Local\Temp\pissa.exe"
  2⤵
  - Executes dropped EXE
  PID:2120

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\pissa.exe

Filesize
37KB

MD5
c3c3d3ee0b300178d41dffc94e76df60

SHA1
fe0a5507cfd276642934aeb11121706682644d36

SHA256
6e7c0b0836bcbedd08d0c98542020b7b3b1a530f4bbf693665fd9a639cce188a

SHA512
c90fadcf47d74bc18e4734e0b5970448c470ff12a49671d19f3dee59602adc45e27608bc8205399fad7f8d0f326af1fd7b3ccc756d9f92b349531f50fcc5f5e6

Download Submit
memory/2844-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2844-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2844-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download