kinsing | 3e6b5e3b5e794c5ed3fac5bf9fb824072730bf7e6816432132088386f186a3b3

Analysis

max time kernel
150s
max time network
149s
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 17:40

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General

Target

2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe
Size

38KB
MD5

ea1c97d4a55233587d16fea3d2118c22
SHA1

c268a4b78ff6bc5f9b59729d0351c4c973b3db52
SHA256

3e6b5e3b5e794c5ed3fac5bf9fb824072730bf7e6816432132088386f186a3b3
SHA512

cd12ca2537e37dda3d48d34b3b807139bffb612f2232469baf0819989e81102291ad52b097f3ec4068d282059f9a8f431602123b59720b7058af771c00a8dc62
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxu2x:b/yC4GyNM01GuQMNXw2PSjHPbSuYl3

Score

10^/10

kinsing loader

Malware Config

Signatures

Kinsing
Kinsing is a loader written in Golang.
loader kinsing

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\retln.exe	CryptoLocker_rule2

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_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

retln.exe

pid process

2760 retln.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2760	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe

description	pid	process	target process
PID 2616 wrote to memory of 2760	2616	2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe	retln.exe
PID 2616 wrote to memory of 2760	2616	2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe	retln.exe
PID 2616 wrote to memory of 2760	2616	2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe	retln.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ea1c97d4a55233587d16fea3d2118c22_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2616

C:\Users\Admin\AppData\Local\Temp\retln.exe
"C:\Users\Admin\AppData\Local\Temp\retln.exe"
2⤵
- Executes dropped EXE
PID:2760

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\retln.exe
Filesize
39KB

MD5
62cc778e5f787e41e077c63cf9b7d2cb

SHA1
3ed1e59f498e3044b9a56d6ae7d98156b262330a

SHA256
6131bff917f0b6b21e967a1f77cb99f4482e092d71495a57fef69a6947e95562

SHA512
4877be93aada7e78cb00043c23ebe2e065b0b312512bdfadea6ec31181186bfaac22833d6f1d7581507790b3bfeb9d44a7abfd763dee2745348b994a97e95d3a

Download Submit
memory/2616-0-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/2616-1-0x0000000002340000-0x0000000002346000-memory.dmp

Filesize
24KB

Download
memory/2616-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2760-21-0x0000000000500000-0x0000000000506000-memory.dmp

Filesize
24KB

Download