18da8da141aab16ad6eb102cf9da4b0c0719e213bb694b0ac2639d367d44d04f

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24-05-2024 04:25

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe
Size

23KB
MD5

2d596659f40f4cdb5dd44229dcb67b0a
SHA1

40aba587ea4d534c2b645302fd68dca52b815490
SHA256

18da8da141aab16ad6eb102cf9da4b0c0719e213bb694b0ac2639d367d44d04f
SHA512

e3c1fc900620b5c210dee625ff4051c0eec09d956e1693cf8417c61fb2d4c61101333e38cf755ba0aaddd9a3cbb750e25fcf664ea58326c2639b627cfafd901e
SSDEEP

384:bVCPwFRuFn65arz1ZhdaXFXSCVQTLfjDp6HMJ3:bVCPwFRo6CpwXFXSqQXfjAsJ3

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1160-0-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	CryptoLocker_rule2
behavioral2/memory/1160-18-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4600-19-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4600-28-0x0000000008000000-0x000000000800E000-memory.dmp	CryptoLocker_rule2

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1160-0-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	UPX
behavioral2/memory/1160-18-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/4600-19-0x0000000008000000-0x000000000800E000-memory.dmp	UPX
behavioral2/memory/4600-28-0x0000000008000000-0x000000000800E000-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

Processes:

2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

hasfj.exe

pid process

4600 hasfj.exe

pid	process
4600	hasfj.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1160-0-0x0000000008000000-0x000000000800E000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\hasfj.exe	upx
behavioral2/memory/1160-18-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/4600-19-0x0000000008000000-0x000000000800E000-memory.dmp	upx
behavioral2/memory/4600-28-0x0000000008000000-0x000000000800E000-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

Processes:

2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe

description	pid	process	target process
PID 1160 wrote to memory of 4600	1160	2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe	hasfj.exe
PID 1160 wrote to memory of 4600	1160	2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe	hasfj.exe
PID 1160 wrote to memory of 4600	1160	2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe	hasfj.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_2d596659f40f4cdb5dd44229dcb67b0a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1160

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
2⤵
- Executes dropped EXE
PID:4600

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\hasfj.exe
Filesize
24KB

MD5
8e8c72afc7b4febf35fac23efb3715fe

SHA1
00a9f9b6ab8dd86d35a0afc7e1b563d075cea772

SHA256
e1aa9bf2315ed5a1ec54f8175250281a6b49a253f0afedbdcf07624337ea1af2

SHA512
ff054194d461d441066db8cf7b19fd6452868ea8155eaee65fe32da36b72f04e8165eda66b6de57a2a4c6c44d918d01d32f88de25437b90dfbdd8872704bd1c5

Download Submit
memory/1160-0-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/1160-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1160-2-0x0000000003010000-0x0000000003016000-memory.dmp

Filesize
24KB

Download
memory/1160-9-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/1160-18-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/4600-19-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download
memory/4600-27-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download
memory/4600-28-0x0000000008000000-0x000000000800E000-memory.dmp

Filesize
56KB

Download