7f23c8d6fa96139d82e6d11d21d6d9efcd368bc1c79ee99e47b5e00a4e78ac8b

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/01/2024, 10:31

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General

Target

2024-01-29_a14ab2f0e4bb90e4768d9bdc62070945_cryptolocker.exe
Size

44KB
MD5

a14ab2f0e4bb90e4768d9bdc62070945
SHA1

2bc8ebb0c99fb2c74e45851b8e15c1c04090f917
SHA256

7f23c8d6fa96139d82e6d11d21d6d9efcd368bc1c79ee99e47b5e00a4e78ac8b
SHA512

8f7cf06838a7c67f04a7f2d2dff8ac71245b0123af8841672ccd5d6086bab2e4c7698b1d639a48c92f77533bc3847ec30a366a39a980cf01aa9e2db591c31909
SSDEEP

768:79inqyNR/QtOOtEvwDpjBKccJVODvcjpbA6qr:79mqyNhQMOtEvwDpjBzck96k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3528-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023209-13.dat	CryptoLocker_rule2
behavioral2/memory/3528-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3528-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023209-13.dat	CryptoLocker_set1
behavioral2/memory/3528-17-0x0000000000500000-0x000000000050F000-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-1-5-21-983843758-932321429-1636175382-1000\Control Panel\International\Geo\Nation	2024-01-29_a14ab2f0e4bb90e4768d9bdc62070945_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3544	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 3528 wrote to memory of 3544	3528	2024-01-29_a14ab2f0e4bb90e4768d9bdc62070945_cryptolocker.exe	83
PID 3528 wrote to memory of 3544	3528	2024-01-29_a14ab2f0e4bb90e4768d9bdc62070945_cryptolocker.exe	83
PID 3528 wrote to memory of 3544	3528	2024-01-29_a14ab2f0e4bb90e4768d9bdc62070945_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-01-29_a14ab2f0e4bb90e4768d9bdc62070945_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_a14ab2f0e4bb90e4768d9bdc62070945_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3528
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3544

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
44KB

MD5
9f9af300a5ed657e63cdf0becc1b2220

SHA1
10438d7d2d1ca5736523f1c5ccfb5c87655c4036

SHA256
a1462e6818a2eb01976991efb6f5c154202fe016afd9fb927d21e5d82d692519

SHA512
79a621a716526fd9e3f9aa7f6fbe781a1e314d08942f291498f7899ace1bea5829a914d53413ae39a9ada9fd78dde09583a15ef3bfd44a3c0b9fbe4757a38d8d

Download Submit
memory/3528-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3528-1-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/3528-2-0x0000000002300000-0x0000000002306000-memory.dmp

Filesize
24KB

Download
memory/3528-3-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3528-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3544-19-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3544-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download