4d09255f846354cc25615c5414f3426e8b94abca27d23330f2816eedc50ede17

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
09/05/2024, 15:29

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General

Target

2024-05-09_4d904d2e565db2f25c6aaaaaaa68d97a_cryptolocker.exe
Size

46KB
MD5

4d904d2e565db2f25c6aaaaaaa68d97a
SHA1

88d0722d993978b0f395f758b30df1572a3819de
SHA256

4d09255f846354cc25615c5414f3426e8b94abca27d23330f2816eedc50ede17
SHA512

4fa4d55984fc9c0b0cad49e4c4567543febbb7c3732cf740f910dd61d8a93434793769ab2d3ed0f58d5162df64bd1a9569d217fd678843981eb391cfb5c7ca9f
SSDEEP

768:P6LsoEEeegiZPvEhHS5+Mh/QtOOtEvwDpjBpaD3TUogs/VXpAPojQ:P6QFElP6k+MRQMOtEvwDpjBQpVXzjQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1448-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002327d-13.dat	CryptoLocker_rule2
behavioral2/memory/1448-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2856-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1448-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002327d-13.dat	CryptoLocker_set1
behavioral2/memory/1448-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2856-25-0x0000000000500000-0x000000000050B000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-09_4d904d2e565db2f25c6aaaaaaa68d97a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2856	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 1448 wrote to memory of 2856	1448	2024-05-09_4d904d2e565db2f25c6aaaaaaa68d97a_cryptolocker.exe	82
PID 1448 wrote to memory of 2856	1448	2024-05-09_4d904d2e565db2f25c6aaaaaaa68d97a_cryptolocker.exe	82
PID 1448 wrote to memory of 2856	1448	2024-05-09_4d904d2e565db2f25c6aaaaaaa68d97a_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-09_4d904d2e565db2f25c6aaaaaaa68d97a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_4d904d2e565db2f25c6aaaaaaa68d97a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1448
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2856

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
46KB

MD5
3aa381e8f1136a895270c1714b0d7401

SHA1
fbae4d0343add91306f6d6bfa3d9ba11e05968e2

SHA256
b479d2d5a78d45465c5b90adcd4b52faf1709b67c118691f8c6ad04475a3f664

SHA512
6e3181d57d91e04cb20c606d33062f412d8e4e837684cc5c7267a79e2370c768aa2dd40bd62f6c15c6e501891c75ad1450cdb4fc97a19038a587b0fa06034525

Download Submit
memory/1448-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1448-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1448-2-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1448-9-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1448-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2856-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download