kinsing | 9331f721bff96d9211a48d60defc44899844996c0f68025f47843e60f191e0f2

Analysis

max time kernel
148s
max time network
151s
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 15:53

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-25_e544072e1ad79a163137695486aa0256_cryptolocker.exe
Size

80KB
MD5

e544072e1ad79a163137695486aa0256
SHA1

a5ed04e3e7b734f3f29215869dbf9b0fe6b8874d
SHA256

9331f721bff96d9211a48d60defc44899844996c0f68025f47843e60f191e0f2
SHA512

397312321c6127ac20bb2b0aee67d255172fb34deb0801771739847484c26797fa9f730eb9c64575fc319df4a73ec57af8ffee123ba2fb2573d0d7cc39cf855c
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOT78:T6a+rdOOtEvwDpjNQ

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/4996-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/912-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4996-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/912-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4996-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/912-26-0x0000000000500000-0x0000000000510000-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_e544072e1ad79a163137695486aa0256_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_e544072e1ad79a163137695486aa0256_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

912 asih.exe

pid	process
912	asih.exe

UPX packed file 4 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4996-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/912-26-0x0000000000500000-0x0000000000510000-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_e544072e1ad79a163137695486aa0256_cryptolocker.exe

description	pid	process	target process
PID 4996 wrote to memory of 912	4996	2024-01-25_e544072e1ad79a163137695486aa0256_cryptolocker.exe	asih.exe
PID 4996 wrote to memory of 912	4996	2024-01-25_e544072e1ad79a163137695486aa0256_cryptolocker.exe	asih.exe
PID 4996 wrote to memory of 912	4996	2024-01-25_e544072e1ad79a163137695486aa0256_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_e544072e1ad79a163137695486aa0256_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_e544072e1ad79a163137695486aa0256_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4996

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:912

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
81KB

MD5
e1b5562e78c9ff00513b4526e7a3b96e

SHA1
415c98993851563549732a2d916754194bbcb4f5

SHA256
e69fba2faf44edba678c839f8fb18f74e1d68f43440886d4600324c55318466c

SHA512
c1883236d05c1a93b5550cf1a36917f1ef8c19494964f1e7ef0658e728af0e45adddf3e0c97b7b74db1e7778bb0d9e025a4f3b5ff046189c16c79ee25058d85a

Download Submit
memory/912-19-0x0000000001F70000-0x0000000001F76000-memory.dmp

Filesize
24KB

Download
memory/912-21-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/912-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4996-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4996-1-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4996-2-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/4996-3-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/4996-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download