874006fc633da44aac0f7ad9b8f60f6acfb4b0f07cfe45af5233225121ab3012

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2024 05:30

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General

Target

2024-01-27_a860573bec1afca70e912ee46ef21758_cryptolocker.exe
Size

69KB
MD5

a860573bec1afca70e912ee46ef21758
SHA1

663978e8c3da3b4a8b78c13fa4cbc823556b3712
SHA256

874006fc633da44aac0f7ad9b8f60f6acfb4b0f07cfe45af5233225121ab3012
SHA512

6f6510f91057a79d29666a9d70a5912eb890501bfb7375138093a2acd97ebbd4adae47c8a07d64f46feb51c4bffe4995e24c39b45a1b42751b4a738c266f6d61
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUtbUu:DW60sllyWOtEvwDpjwF85R

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/1888-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c00000002315a-13.dat	CryptoLocker_rule2
behavioral2/memory/1888-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/1888-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000c00000002315a-13.dat	CryptoLocker_set1
behavioral2/memory/1888-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-01-27_a860573bec1afca70e912ee46ef21758_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1768	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 1888 wrote to memory of 1768	1888	2024-01-27_a860573bec1afca70e912ee46ef21758_cryptolocker.exe	89
PID 1888 wrote to memory of 1768	1888	2024-01-27_a860573bec1afca70e912ee46ef21758_cryptolocker.exe	89
PID 1888 wrote to memory of 1768	1888	2024-01-27_a860573bec1afca70e912ee46ef21758_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-27_a860573bec1afca70e912ee46ef21758_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_a860573bec1afca70e912ee46ef21758_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1888
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1768

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
69KB

MD5
8d5d72a9077d7c26a9ca979d017940f8

SHA1
1eacbbf3cdcc5cc9370e9bf8be8d4479fc1dc275

SHA256
ca2ebb4205cd0938488ba4e569f83d3f38c984a12d8798bdd39000173d0a57e5

SHA512
a02ddeee8a27b759549776d268758eb4109718cbfa306b35fdee01d081d1f259b4f00e632545f724a8d37b9b3b279567ceb5e26b567d3212bc076c98a8773186

Download Submit
memory/1768-19-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/1768-25-0x0000000000800000-0x0000000000806000-memory.dmp

Filesize
24KB

Download
memory/1888-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1888-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1888-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/1888-3-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1888-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download