kinsing | 48b8870e477a52ed5b39ebcd4bdce672d65c47be58f339d68d3bc18bc7743f13

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 17:36

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe
Size

105KB
MD5

b9165fd666d2870d92217ccc6ed5be23
SHA1

890bd7d409fb62616989c9ae59d9223cd7b74fe8
SHA256

48b8870e477a52ed5b39ebcd4bdce672d65c47be58f339d68d3bc18bc7743f13
SHA512

8edac65639e3556c2c42c998d3434967af9f8e31441dd60dbba519795d438c6017c067d58cec1fe829952cf743427841f7f9c92025054929fd88e91851d3bf1f
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6Gksa:1nK6a+qdOOtEvwDpja

Score

10^/10

kinsing loader upx

Malware Config

Signatures

Kinsing
Kinsing is a loader written in Golang.
loader kinsing

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/3644-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4744-18-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/3644-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/3644-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/4744-18-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/3644-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/3644-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/4744-18-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/3644-27-0x0000000000500000-0x000000000050F311-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:

2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3644 asih.exe

pid	process
3644	asih.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4744-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/3644-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/4744-18-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/3644-27-0x0000000000500000-0x000000000050F311-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:

2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe

description	pid	process	target process
PID 4744 wrote to memory of 3644	4744	2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe	asih.exe
PID 4744 wrote to memory of 3644	4744	2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe	asih.exe
PID 4744 wrote to memory of 3644	4744	2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_b9165fd666d2870d92217ccc6ed5be23_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4744

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3644

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\asih.exe

Filesize
105KB

MD5
ce1cb297faffc1eef6c0dde16cf960a6

SHA1
f82b7cdce18eb258883dcb3fdab7b6afd6a9dfc1

SHA256
519ee2a5e46314f05d0fe777b66760d7b3614e85f8a9ea790fc026b4343c1ef0

SHA512
3f1df6229d553fe5407eabd03d2bcffc25a596107ad639af59b59c2aee3421d766d4815061845e9fc02abdad361878780b936470ef2eef2dbeabab179fae58d8

Download Submit
memory/3644-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/3644-20-0x00000000007E0000-0x00000000007E6000-memory.dmp

Filesize
24KB

Download
memory/3644-23-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3644-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4744-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4744-1-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4744-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4744-2-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/4744-18-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download