4e876830dd0e751c618fe6337413ee3088330ed3ae731cd927be451cf63c71f3

Analysis

max time kernel
144s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
15/04/2024, 05:46

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General

Target

2024-04-15_aeb6fdf3bd0fbbd8d2e471c7ce06d02d_cryptolocker.exe
Size

35KB
MD5

aeb6fdf3bd0fbbd8d2e471c7ce06d02d
SHA1

3f7850da2d9c6fdc992611e9eb046e90607f96bc
SHA256

4e876830dd0e751c618fe6337413ee3088330ed3ae731cd927be451cf63c71f3
SHA512

2ab73c3af28475aca30ae316dbfa12651dc9dce40ada92f97718a5fb8fb71ad5b8743a701ac2d0798747789d226d57c417a9c9341066ff4078009686dae67492
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axKB:qUmnpomddpMOtEvwDpjjaYaK

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3272-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002344e-13.dat	CryptoLocker_rule2
behavioral2/memory/3272-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3272-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002344e-13.dat	CryptoLocker_set1
behavioral2/memory/3272-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/3272-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x000800000002344e-13.dat	UPX
behavioral2/memory/3272-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-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-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	2024-04-15_aeb6fdf3bd0fbbd8d2e471c7ce06d02d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3568	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3272-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x000800000002344e-13.dat	upx
behavioral2/memory/3272-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/3568-26-0x0000000000500000-0x000000000050F000-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 3272 wrote to memory of 3568	3272	2024-04-15_aeb6fdf3bd0fbbd8d2e471c7ce06d02d_cryptolocker.exe	80
PID 3272 wrote to memory of 3568	3272	2024-04-15_aeb6fdf3bd0fbbd8d2e471c7ce06d02d_cryptolocker.exe	80
PID 3272 wrote to memory of 3568	3272	2024-04-15_aeb6fdf3bd0fbbd8d2e471c7ce06d02d_cryptolocker.exe	80

C:\Users\Admin\AppData\Local\Temp\2024-04-15_aeb6fdf3bd0fbbd8d2e471c7ce06d02d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-15_aeb6fdf3bd0fbbd8d2e471c7ce06d02d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3272
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3568

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
36KB

MD5
0b84f2ebb7c819dfbdb2786abfc47ef2

SHA1
9613c310214157f0aa0f3a063cace74c9530355f

SHA256
1bb7de07f921db8926f5d420df28d4afff9b9109dd24cba183dfac76c7e3551f

SHA512
b3bd9900e070c384a3c9e1c1b1f1ee9cb6941edcca9aad0012589c171a51d0f919748345f99102b8b87d714058bb3bdeae6ecfe06c0b74a0c941da79deb917af

Download Submit
memory/3272-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3272-1-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3272-2-0x00000000020C0000-0x00000000020C6000-memory.dmp

Filesize
24KB

Download
memory/3272-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3272-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3568-19-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3568-21-0x0000000000550000-0x0000000000556000-memory.dmp

Filesize
24KB

Download
memory/3568-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download