85c6004a0b6f77d9f8d7f04cad2e7b00cbc4100823b4ba5b27c6358a9e71e6b2

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
26-01-2024 15:31

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General

Target

2024-01-26_908497713a7dc8debb46c9588a447dae_cryptolocker.exe
Size

69KB
MD5

908497713a7dc8debb46c9588a447dae
SHA1

de301262f89558dd91a0abb9b2b96b623b78bf2f
SHA256

85c6004a0b6f77d9f8d7f04cad2e7b00cbc4100823b4ba5b27c6358a9e71e6b2
SHA512

a0e375462da84cf6b705b2f4f3c3feacb3d1b42432addac8239d700a439afeb07bd184a97feac119bfdde56739870efeab384e8308acada11d9808dd5b581233
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUtbUu:DW60sllyWOtEvwDpjwF85p

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3768-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_rule2
behavioral2/memory/3768-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3768-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000700000002320a-13.dat	CryptoLocker_set1
behavioral2/memory/3768-25-0x0000000000500000-0x000000000050B000-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-01-26_908497713a7dc8debb46c9588a447dae_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4000	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 3768 wrote to memory of 4000	3768	2024-01-26_908497713a7dc8debb46c9588a447dae_cryptolocker.exe	88
PID 3768 wrote to memory of 4000	3768	2024-01-26_908497713a7dc8debb46c9588a447dae_cryptolocker.exe	88
PID 3768 wrote to memory of 4000	3768	2024-01-26_908497713a7dc8debb46c9588a447dae_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-26_908497713a7dc8debb46c9588a447dae_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_908497713a7dc8debb46c9588a447dae_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3768
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4000

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
70KB

MD5
8058444a546252a8e1bd46795adedfe1

SHA1
19c8c5800637b77a45a946b941e62882a1714d30

SHA256
9517cd2276e9db387d9d5e7e32cc8ad3d6b052f44e7d0540525d03a50514eea2

SHA512
3378ca65825f34af3ea91d6d3ba482653ebe040570a11317486a8eaa5f9fa291ff5d585fab2c2a727ddec398f7aa52e354219ecc993f53890f8833ef7777744c

Download Submit
memory/3768-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3768-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3768-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/3768-3-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/3768-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4000-18-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/4000-23-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download