fe697a4ac96c951d971aa3ceb4176b6804ae102eaea2085a6f93c9dd12ef7447

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 04:01

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General

Target

2024-02-14_89c5c692660532dc2cda3ccab88e4aca_cryptolocker.exe
Size

68KB
MD5

89c5c692660532dc2cda3ccab88e4aca
SHA1

f82c119e063540d2ef7baa0f389594cba1bcd563
SHA256

fe697a4ac96c951d971aa3ceb4176b6804ae102eaea2085a6f93c9dd12ef7447
SHA512

a725b126eb95f2ce299336f3c6358dedfc8ce581efe8ff16bb225b3227acc461a26ae934e5d30e9d71ac309abe6ea744e145d8b97d7888350984e4689e5b39c0
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUbeF:DW60sllyWOtEvwDpjwF852

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1632-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002320d-13.dat	CryptoLocker_rule2
behavioral2/memory/5072-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1632-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1632-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002320d-13.dat	CryptoLocker_set1
behavioral2/memory/5072-18-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1632-17-0x0000000000500000-0x000000000050B000-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-14_89c5c692660532dc2cda3ccab88e4aca_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5072	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 1632 wrote to memory of 5072	1632	2024-02-14_89c5c692660532dc2cda3ccab88e4aca_cryptolocker.exe	85
PID 1632 wrote to memory of 5072	1632	2024-02-14_89c5c692660532dc2cda3ccab88e4aca_cryptolocker.exe	85
PID 1632 wrote to memory of 5072	1632	2024-02-14_89c5c692660532dc2cda3ccab88e4aca_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-14_89c5c692660532dc2cda3ccab88e4aca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_89c5c692660532dc2cda3ccab88e4aca_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1632
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5072

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
ca8fc72b950016e262086ff9830ccc57

SHA1
26db3875bc23260b29b67fa00cdc2b712d7b37a2

SHA256
0369af51fc1fefb59976f412e6d020675a077147e1330baf4b4672721bc384db

SHA512
0a8374a9cb1845e9cae867c2f3648afc534736c65ebcd8a40ca3da7a9628324fd36f8eeb7c01f67c831214cf87c04b775db059d6258a9225f977fcd3604b9532

Download Submit
memory/1632-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1632-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1632-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1632-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1632-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5072-18-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5072-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/5072-22-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download