735cc58b7c3b91c709cea968590331f09ad22609bfdecde5a4240298d23ec135

Analysis

max time kernel
148s
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
13/03/2024, 01:25

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General

Target

2024-03-13_027a869f1c844963bb0135f17c8c9ed6_cryptolocker.exe
Size

47KB
MD5

027a869f1c844963bb0135f17c8c9ed6
SHA1

4e9cd7de12d6792451b158445980716cf7c0e763
SHA256

735cc58b7c3b91c709cea968590331f09ad22609bfdecde5a4240298d23ec135
SHA512

75de97f0b641ad1a7b7f40a3f525c6026094dd342aeb1a5395c111eaedbb10311588e18ad1b41501678059c1c39dbd237e26dc46918a1853f7c2d713b5fda8d4
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaaEqbIu556yPRZ0h:X6QFElP6n+gJQMOtEvwDpjB0GIWvPRa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-13_027a869f1c844963bb0135f17c8c9ed6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2176	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 344 wrote to memory of 2176	344	2024-03-13_027a869f1c844963bb0135f17c8c9ed6_cryptolocker.exe	89
PID 344 wrote to memory of 2176	344	2024-03-13_027a869f1c844963bb0135f17c8c9ed6_cryptolocker.exe	89
PID 344 wrote to memory of 2176	344	2024-03-13_027a869f1c844963bb0135f17c8c9ed6_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-13_027a869f1c844963bb0135f17c8c9ed6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-13_027a869f1c844963bb0135f17c8c9ed6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:344
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2176

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
47KB

MD5
d06954dded521579d4157ea670a63f98

SHA1
04c6693bcefc74a93ab815c41f52c732616d4029

SHA256
c22437db6ba17a1544db47540fffa5bc5af019b113673e0aaba687d87c1dab1c

SHA512
8108cdb4ec09625f0bf761a641411c965be0fe52211f6eeb7ef3d0281cd00eded470c2b12fc767c19e2ecd2d82f70864ae09fdd15a262e35a425670302a5dae3

Download Submit
memory/344-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/344-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/344-2-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2176-18-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/2176-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download