kinsing | b926658227ec1a05d3f20bee63cfa53b71238913baa5ed266a704e7f6f2826c9

Analysis

max time kernel
150s
max time network
146s
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 15:36

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General

Target

2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe
Size

31KB
MD5

6f403dddf26e8e95554e0b18e3d6a0cc
SHA1

546de8c03bfed2b884cbee5c7f142fec269aed1c
SHA256

b926658227ec1a05d3f20bee63cfa53b71238913baa5ed266a704e7f6f2826c9
SHA512

0034e85034bdee349420dcd8a2ee55e15c48b97e5621f16664bf71d94a9aaf0d06fc2417fd579458a607981d6260af4d5b1065b9e6c8a6e2c9a7038f0c0fc5f7
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUsDvE:b/yC4GyNM01GuQMNXw2PSjZc

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_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

retln.exe

pid process

1816 retln.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1816	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe

description	pid	process	target process
PID 2328 wrote to memory of 1816	2328	2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe	retln.exe
PID 2328 wrote to memory of 1816	2328	2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe	retln.exe
PID 2328 wrote to memory of 1816	2328	2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe	retln.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2328

C:\Users\Admin\AppData\Local\Temp\retln.exe
"C:\Users\Admin\AppData\Local\Temp\retln.exe"
2⤵
- Executes dropped EXE
PID:1816

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
31KB

MD5
613c73c528adbcf26ea87fbbe1a97a02

SHA1
4278e9fa93a4d5e57d09828e36397eb52d9356ad

SHA256
5297b43a515ebf2e0646903455a556a393f0758bddbfcfee75f7c989b246356e

SHA512
e72d8bc213da25400286b9c57de27bef1d555e5bcc21effe801a7fbad7273fab226935be61928a85c8008de99ffd1b72f7a99339adf4f3c7e74a728b38bfdd24

Download Submit
memory/1816-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/2328-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2328-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2328-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download