kinsing | a563e74c8a8b58cd5fb7e8791761e59bd9b03d1b53811510643b7aac3566e17f

Analysis

max time kernel
152s
max time network
155s
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 15:38

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General

Target

2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe
Size

50KB
MD5

7b0d05c22416cf705f52e2f152c3aec0
SHA1

58d000ccf84d721888232ff84bf3b92ea3b20fdd
SHA256

a563e74c8a8b58cd5fb7e8791761e59bd9b03d1b53811510643b7aac3566e17f
SHA512

658acc37cf89a7aeb18cb4c188093d5d83a54548e5369bf50788f21115b6fc8bcf1120631d07139974939949674aad732e6c558543c94960bb261facbd9910d4
SSDEEP

768:bIDOw9UiaCHfjnE0Sfa7ilR0p9u6p4ICNBCXK9gE1NI2:bIDOw9a0DwitDZzwI2

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\lossy.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_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

lossy.exe

pid process

4244 lossy.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4244	lossy.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe

description	pid	process	target process
PID 3600 wrote to memory of 4244	3600	2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe	lossy.exe
PID 3600 wrote to memory of 4244	3600	2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe	lossy.exe
PID 3600 wrote to memory of 4244	3600	2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe	lossy.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_7b0d05c22416cf705f52e2f152c3aec0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3600

C:\Users\Admin\AppData\Local\Temp\lossy.exe
"C:\Users\Admin\AppData\Local\Temp\lossy.exe"
2⤵
- Executes dropped EXE
PID:4244

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\lossy.exe
Filesize
51KB

MD5
3722191d3b0eaae3b2bedfe7c4b46fc1

SHA1
d637e36ec81ad8dc54f07950ff532e2b46efca78

SHA256
cd6842a88cfcfc89b9383b3e55fc7636803e9cf852367139b50c23b3583ebab7

SHA512
5597ec0f366d76b382b440884a78bddae976d7c8a22e59d0cad499d0a99cf23889da27e0835331525c61b0cfa94003077ba2f63fdbe35982df25e9f3cb437d8f

Download Submit
memory/3600-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3600-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/3600-2-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/4244-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4244-19-0x0000000002040000-0x0000000002046000-memory.dmp

Filesize
24KB

Download