kinsing | c298c4bb56178e5d2c721ed6e967962fbbfb4ccd80a638a1972a3227fe46afb0

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-01-2024 15:55

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-25_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe
Size

107KB
MD5

f61000167d97b0e441c446f4bdab832d
SHA1

0e74bd59ec4133917d0d412596885e0e392ed354
SHA256

c298c4bb56178e5d2c721ed6e967962fbbfb4ccd80a638a1972a3227fe46afb0
SHA512

7eeb8261b969ab63bbed1553da0100f7233b56d3e844646001d4cad4008681d56a36840b0131ffc567e56295b3e62a89cefdad675373ab1cd3f1fc01b3a271f6
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalRn5iF1j6GksgEH:1nK6a+qdOOtEvwDpj5

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/4920-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4920-18-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2452-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2452-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4920-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/4920-18-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/2452-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral2/memory/2452-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4920-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/4920-18-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/2452-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral2/memory/2452-27-0x0000000000500000-0x000000000050F311-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_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-01-25_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2452 asih.exe

pid	process
2452	asih.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4920-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/4920-18-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/2452-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral2/memory/2452-27-0x0000000000500000-0x000000000050F311-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_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe

description	pid	process	target process
PID 4920 wrote to memory of 2452	4920	2024-01-25_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe	asih.exe
PID 4920 wrote to memory of 2452	4920	2024-01-25_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe	asih.exe
PID 4920 wrote to memory of 2452	4920	2024-01-25_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_f61000167d97b0e441c446f4bdab832d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4920

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2452

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
107KB

MD5
92556ed18c66f8a85285c756e29f66f0

SHA1
3b6a3ec8b9b0b71b24b39e601314adddf314b1ac

SHA256
dbe0660186d67e45ca8a812b8f15b86cf374596fe96f18085bb3978fbb0a4f47

SHA512
852f88ab32fe6393ea4aa126ddbf3ad3314e29f992bbc82c2623049615d02086f3b73816f8fd79a96bd5cdeb2f7b05e88900b49d84150ff164d4e4fd30b683cb

Download Submit
memory/2452-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2452-20-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2452-22-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2452-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4920-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/4920-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4920-3-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4920-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4920-18-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download