kinsing | 08b47eb168d94c0230714f7f182df7d4f162c4dbd4428c8ff205de07cd79d8b5

Analysis

max time kernel
149s
max time network
154s
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 15:47

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General

Target

2024-01-25_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe
Size

73KB
MD5

ba94f8c382fd544c70dd6db0768ea6d0
SHA1

198f7da526809af7fb37bbb7f67efe5f16f62f63
SHA256

08b47eb168d94c0230714f7f182df7d4f162c4dbd4428c8ff205de07cd79d8b5
SHA512

dfce4c6461d4d2c9e2dc262da9abb099bbaa9ca579f47596f32a6f0a7319a35fb422574ef840c8b1b3487c8d4131e0935efdcbaa5abb65b00c25abed94eceff7
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdU/:T6a+rdOOtEvwDpjNtW

Score

10^/10

kinsing loader upx

Malware Config

Signatures

Kinsing
Kinsing is a loader written in Golang.
loader kinsing

Detection of CryptoLocker Variants 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/1008-21-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4004-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/1008-21-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4004-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/1008-21-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4004-26-0x0000000000500000-0x0000000000510000-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_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation	2024-01-25_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4004 asih.exe

pid	process
4004	asih.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/1008-21-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4004-26-0x0000000000500000-0x0000000000510000-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_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe

description	pid	process	target process
PID 1008 wrote to memory of 4004	1008	2024-01-25_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe	asih.exe
PID 1008 wrote to memory of 4004	1008	2024-01-25_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe	asih.exe
PID 1008 wrote to memory of 4004	1008	2024-01-25_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ba94f8c382fd544c70dd6db0768ea6d0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1008

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4004

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
73KB

MD5
1539210e5a39b9aa1572d073aa492b7e

SHA1
878362b12ef2b703c0f846ace1fd3c989fb6d0c9

SHA256
e30ec1f6c4acae194d434d9142f338db17c14b0a3abc4a48e1128a125383c676

SHA512
a7c7f444c641711cf0bcd99819c1bb41b364b30907a67da1b27be7c774298dc4ceed37de03b13b169730dc104eb9dbc79c374f111c5de9189158ab2702cefa90

Download Submit
memory/1008-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1008-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1008-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1008-3-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1008-21-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4004-18-0x0000000001F40000-0x0000000001F46000-memory.dmp

Filesize
24KB

Download
memory/4004-20-0x0000000001F20000-0x0000000001F26000-memory.dmp

Filesize
24KB

Download
memory/4004-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download