kinsing | 8f56045c26a9223c129cf8294a9b65001f56b070ae85cfffeccf02eb3c50981f

Analysis

max time kernel
150s
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 15:32

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-25_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe
Size

56KB
MD5

4d42244e03a2db90c9fda2d7c6c8bcf5
SHA1

a5cc536e38760232877c6911ccf11fa476df25e1
SHA256

8f56045c26a9223c129cf8294a9b65001f56b070ae85cfffeccf02eb3c50981f
SHA512

d7fd23f010967b5c712931720d51d30145d04dda57225e3b230e86334bbf93f5611e166f46d5363627c37e5880c6e552dfc5868818452c9a243d1112358561e7
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5appO:z6QFElP6n+gKmddpMOtEvwDpj9aYae

Score

10^/10

kinsing loader upx

Malware Config

Signatures

Kinsing
Kinsing is a loader written in Golang.
loader kinsing

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/4156-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4612-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4612-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/4156-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4612-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4612-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/4156-18-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4612-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/4612-27-0x0000000000500000-0x0000000000510000-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_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-01-25_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

4612 asih.exe

pid	process
4612	asih.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/4156-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/4156-18-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4612-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/4612-27-0x0000000000500000-0x0000000000510000-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_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe

description	pid	process	target process
PID 4156 wrote to memory of 4612	4156	2024-01-25_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe	asih.exe
PID 4156 wrote to memory of 4612	4156	2024-01-25_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe	asih.exe
PID 4156 wrote to memory of 4612	4156	2024-01-25_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_4d42244e03a2db90c9fda2d7c6c8bcf5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4156

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:4612

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
56KB

MD5
8939972cd6cdc4b37a34542c750eee55

SHA1
ad300ac377e993a68514ab6a52a963a6e220cbfa

SHA256
a067e42e1ecb517c526707cf1d24b35ede696b28722774b33e0f673cf2ca6e7c

SHA512
363d07726081d20ba66c94051f8364802f34b86a2cb8f1bcb6ecb906a739725201b95d20134166b2c2594bcedae5e2d92263d1dabc3cdb94f70c811f8f37f22d

Download Submit
memory/4156-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4156-1-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4156-2-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4156-3-0x00000000006E0000-0x00000000006E6000-memory.dmp

Filesize
24KB

Download
memory/4156-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4612-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4612-20-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4612-26-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4612-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download