kinsing | 9fadb5e86b1a4ef3902c4617c4aa8d2c48b720f1e65b2278a95485226de7c532

Analysis

max time kernel
148s
max time network
151s
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 17:30

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General

Target

2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe
Size

56KB
MD5

65c2ed41227c679de88ccfb2b12ac7b7
SHA1

21efdb8ecd469881d9ee1ef1e2bbb0fb662c6378
SHA256

9fadb5e86b1a4ef3902c4617c4aa8d2c48b720f1e65b2278a95485226de7c532
SHA512

f796787209a27948678ba45053ebaaa15df7201a6a5fbee9e91a8d305354082383ed87e776be940b53b265d3a550009b06014b408b1ab51f64c747e5e9d45896
SSDEEP

1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61PTB:BbdDmjr+OtEvwDpjMT

Score

10^/10

kinsing loader

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/4000-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4000-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5076-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5076-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4000-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5076-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5076-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4000-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/4000-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/5076-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/5076-27-0x0000000000500000-0x0000000000510000-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_65c2ed41227c679de88ccfb2b12ac7b7_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_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

5076 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
5076	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe

description	pid	process	target process
PID 4000 wrote to memory of 5076	4000	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe	asih.exe
PID 4000 wrote to memory of 5076	4000	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe	asih.exe
PID 4000 wrote to memory of 5076	4000	2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_65c2ed41227c679de88ccfb2b12ac7b7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4000

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:5076

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\asih.exe
Filesize
57KB

MD5
bb45e1201d21351c7af45e0afe6e0ec0

SHA1
c4fb0fb6cb81237f30fa27540bb8d7e0319209a7

SHA256
0b61be1ee2303c13064d0a43e458f7e43f822310ce835aed088098c7e37e7b18

SHA512
21134ac343c7961d004f5dac5689dd3e51a748741cfccdab7be88ebb3247efb274360b5a740864634e722c2be258dcf21a14193478223185db857ac7adee62a5

Download Submit
memory/4000-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4000-1-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/4000-2-0x00000000007F0000-0x00000000007F6000-memory.dmp

Filesize
24KB

Download
memory/4000-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/4000-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5076-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/5076-20-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/5076-26-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/5076-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download