67d0ddd0aa3a5c722bb39e6fbd6ec86e62dafb6d61b7594077c090aa372f2d80

Analysis

max time kernel
150s
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
31/05/2024, 22:44

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General

Target

2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe
Size

42KB
MD5

93267d7373a314898bf45590aa62da7d
SHA1

e8ca992495a6c97f9d6d52aed5b2f2babe84c1bc
SHA256

67d0ddd0aa3a5c722bb39e6fbd6ec86e62dafb6d61b7594077c090aa372f2d80
SHA512

2e778d087220515b5d376b7d1f5c7ff35730eff4f9f2a973e32e4621c614c46a73c006befbb6dacbd5633b2ac3c1bfc74b9855d2c2f2b9946c978aed10354940
SSDEEP

768:ba74zYcgT/EkdCQgpwXFXSqQXfj0xKoWOU:ba6YcA/Xk3wXFXSqAJiU

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/2652-0-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00080000000233fb-13.dat	CryptoLocker_rule2
behavioral2/memory/3720-16-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2652-18-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3720-26-0x0000000008000000-0x000000000800F000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral2/memory/2652-0-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/files/0x00080000000233fb-13.dat	UPX
behavioral2/memory/3720-16-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/2652-18-0x0000000008000000-0x000000000800F000-memory.dmp	UPX
behavioral2/memory/3720-26-0x0000000008000000-0x000000000800F000-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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3720	hasfj.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2652-0-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/files/0x00080000000233fb-13.dat	upx
behavioral2/memory/3720-16-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/2652-18-0x0000000008000000-0x000000000800F000-memory.dmp	upx
behavioral2/memory/3720-26-0x0000000008000000-0x000000000800F000-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 2652 wrote to memory of 3720	2652	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe	83
PID 2652 wrote to memory of 3720	2652	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe	83
PID 2652 wrote to memory of 3720	2652	2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_93267d7373a314898bf45590aa62da7d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3720

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\hasfj.exe

Filesize
42KB

MD5
85d3ceb6befbe2922495bd649cf049be

SHA1
3c1ad38d6d9c6fdb1486ffd28406d783ebf3ac75

SHA256
2eda17945d872a414ca8258672ffdf9dc6a827355344f94adb12a7fa78e3682c

SHA512
d8d5bee76f091b34a2348bc064627843445254d9fc96298cfe46c5f3d6b667514d641bf84aa9f686edb05303df22e26d6c96fec110d183a8b301f192b6eee0cc

Download Submit
memory/2652-0-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/2652-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2652-2-0x0000000003150000-0x0000000003156000-memory.dmp

Filesize
24KB

Download
memory/2652-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2652-18-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3720-16-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download
memory/3720-26-0x0000000008000000-0x000000000800F000-memory.dmp

Filesize
60KB

Download