kinsing | b1767aa87b0feb95b533470a89c309da05461467700d646de151df56eaa5d89d

Analysis

max time kernel
148s
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 17:41

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General

Target

2024-01-25_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe
Size

50KB
MD5

ef82d30cbd5d823168cc1ae928547faf
SHA1

d23d27b66660546c8108debcd6cb835043a9e828
SHA256

b1767aa87b0feb95b533470a89c309da05461467700d646de151df56eaa5d89d
SHA512

a1cf52d1a6be7ce7a6f36811ad1c947615f27ff8913ddd10e31cab424157afe903b4f9aed9bd01aff01a187d6cae9fd923960f2534a86f4e1494333dc6705020
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qn8pKIRd:79mqyNhQMOtEvwDpjBxe8TpXRd

Score

10^/10

kinsing loader

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/1688-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1688-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1688-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1688-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

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_ef82d30cbd5d823168cc1ae928547faf_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_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1140 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1140	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-01-25_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe

description	pid	process	target process
PID 1688 wrote to memory of 1140	1688	2024-01-25_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe	asih.exe
PID 1688 wrote to memory of 1140	1688	2024-01-25_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe	asih.exe
PID 1688 wrote to memory of 1140	1688	2024-01-25_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_ef82d30cbd5d823168cc1ae928547faf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1688

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1140

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\asih.exe

Filesize
50KB

MD5
b09970ae0a18ab9186d24e0b8164def0

SHA1
8b785b52de434620838ca26098a02e12391d86d5

SHA256
02ea9b3626ce59f29b46e70d85519d6b80c4fcee77d10308a06aed1a66fa1346

SHA512
5ac5064e8dd2756bcef5c89eb643d240d3af6c575e827b62abdf071caabdbc876f8e8b319ed96c7b56e9a6e34bfdff71cf232f75d76a6bcd48cb1cc51d380ca2

Download Submit
memory/1140-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1140-22-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1140-20-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1688-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1688-2-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1688-1-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/1688-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/1688-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download