460802a89ad9127c9f60acc74713d4a859243a56949adb969d184a51390dd720

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
10/05/2024, 04:31

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General

Target

2024-05-10_450109ba398e54489898e6a20e75288f_cryptolocker.exe
Size

89KB
MD5

450109ba398e54489898e6a20e75288f
SHA1

5dc854cc8660442b1ca5d246c527010aba01063b
SHA256

460802a89ad9127c9f60acc74713d4a859243a56949adb969d184a51390dd720
SHA512

828dec1bb5596fcb829ad5fe5e641f2af4373ad407748b5eda6a3d8f5d48c4623fd988572f1c2e991c363618a7aa0494e642acec4dd403e5aeb673ffd9d71a54
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAex:n6a+1SEOtEvwDpjYYvQd2PW

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/1524-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000a0000000233c0-13.dat	CryptoLocker_rule2
behavioral2/memory/1524-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/940-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/1524-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000a0000000233c0-13.dat	CryptoLocker_set1
behavioral2/memory/1524-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/940-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/1524-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000a0000000233c0-13.dat	UPX
behavioral2/memory/1524-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/940-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-10_450109ba398e54489898e6a20e75288f_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
940	asih.exe

UPX packed file 5 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1524-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000a0000000233c0-13.dat	upx
behavioral2/memory/1524-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/940-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 1524 wrote to memory of 940	1524	2024-05-10_450109ba398e54489898e6a20e75288f_cryptolocker.exe	83
PID 1524 wrote to memory of 940	1524	2024-05-10_450109ba398e54489898e6a20e75288f_cryptolocker.exe	83
PID 1524 wrote to memory of 940	1524	2024-05-10_450109ba398e54489898e6a20e75288f_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-10_450109ba398e54489898e6a20e75288f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_450109ba398e54489898e6a20e75288f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1524
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:940

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
90KB

MD5
2a04b472112a2c2641e0af8b33b716a2

SHA1
11dd5dba450c12a1f22e3236154bc0a0c96cc059

SHA256
e6ad3e0cfa115cb4276ea362f7b527c6e14a20616ac5b525cee8c6bb3eab8a50

SHA512
9052829e472ea5e90ea5347b02d8917cdc458a2f361ac104c2cb13bd91750f69c3fe3232bb74d78691925575bc15f8f070982031aff864af10d3dedef9fcb790

Download Submit
memory/940-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/940-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/940-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/940-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1524-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1524-1-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1524-2-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/1524-9-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download
memory/1524-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download