292439537c7ceda40114bb796d5134e8708e6b050303b84dc6acf8d68b4807ea

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2024, 15:33

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General

Target

2024-05-11_ce5ebdb65d1d39cfb287aa74005cf207_cryptolocker.exe
Size

37KB
MD5

ce5ebdb65d1d39cfb287aa74005cf207
SHA1

e55347e358ebf2b731518fbff340b8b706d8be6b
SHA256

292439537c7ceda40114bb796d5134e8708e6b050303b84dc6acf8d68b4807ea
SHA512

b2693c61c203c41aa6c3f2fac8e875a32aa87df1a21058ba09d9d91a2159d1c94aff420b2ee3394dba494a3963a001f5d2e9f31305092fba31a231bd2410b30d
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3M:qUmnpomddpMOtEvwDpjjaYaQM

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/228-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000022f1f-13.dat	CryptoLocker_rule2
behavioral2/memory/228-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1532-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/228-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000022f1f-13.dat	CryptoLocker_set1
behavioral2/memory/228-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1532-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/228-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0006000000022f1f-13.dat	UPX
behavioral2/memory/228-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1532-26-0x0000000000500000-0x000000000050F000-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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-05-11_ce5ebdb65d1d39cfb287aa74005cf207_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1532	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/228-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0006000000022f1f-13.dat	upx
behavioral2/memory/228-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1532-26-0x0000000000500000-0x000000000050F000-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 228 wrote to memory of 1532	228	2024-05-11_ce5ebdb65d1d39cfb287aa74005cf207_cryptolocker.exe	86
PID 228 wrote to memory of 1532	228	2024-05-11_ce5ebdb65d1d39cfb287aa74005cf207_cryptolocker.exe	86
PID 228 wrote to memory of 1532	228	2024-05-11_ce5ebdb65d1d39cfb287aa74005cf207_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-05-11_ce5ebdb65d1d39cfb287aa74005cf207_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_ce5ebdb65d1d39cfb287aa74005cf207_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:228
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1532

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
37KB

MD5
e15e2dfb4b2d792015fc5be6f2fe4eca

SHA1
80bf5a34a3994362f379b3401bf238c5750a08ac

SHA256
2d788967423641ca04c3256a11015e99569814d5b3ce5fef236529f8a8f4fcab

SHA512
4f4bbaa86f2940752bc5fe92c0e0648d7d535f251d94cb67f0086b5f26bb7416c1c9173407007c7b3a71b4300361942fa5a8503a2f7668741f4fce74f95a3902

Download Submit
memory/228-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/228-1-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/228-2-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/228-3-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/228-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1532-19-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/1532-25-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/1532-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download