kinsing | 0d55ee7b8da66aae5c9918d60992bdcb44201d2d95517f559afb3f9213cc5369

Analysis

max time kernel
148s
max time network
150s
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 17:36

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General

Target

2024-01-25_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe
Size

85KB
MD5

b46fad7d4d7c73bfd0f1014eed18255d
SHA1

dfaba9951391747b525b5c5c1732b03ec5122701
SHA256

0d55ee7b8da66aae5c9918d60992bdcb44201d2d95517f559afb3f9213cc5369
SHA512

157b7a1b66d1bbe5a48a70e4395d7b5704e6efbfbabce0a371962ffd7b5e3adf17aefc5322a33e3f8c5e221c46e2697d4f21709c519c13114e52ce287daf490b
SSDEEP

768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtISX:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgB

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/920-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral2/memory/920-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1396-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1396-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/920-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral2/memory/920-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1396-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1396-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral2/memory/920-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
C:\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral2/memory/920-18-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1396-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/1396-27-0x0000000000500000-0x000000000050F000-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_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3791175113-1062217823-1177695025-1000\Control Panel\International\Geo\Nation	2024-01-25_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1396 asih.exe

pid	process
1396	asih.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/920-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral2/memory/920-18-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1396-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1396-27-0x0000000000500000-0x000000000050F000-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_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe

description	pid	process	target process
PID 920 wrote to memory of 1396	920	2024-01-25_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe	asih.exe
PID 920 wrote to memory of 1396	920	2024-01-25_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe	asih.exe
PID 920 wrote to memory of 1396	920	2024-01-25_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-01-25_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-25_b46fad7d4d7c73bfd0f1014eed18255d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:920

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1396

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
85KB

MD5
be3c6cd1bf691c5385e2c9cc57673bb4

SHA1
7f31e0a7968d8dfa1ecaa83e5f558b0fbfb3738c

SHA256
4257488dc66b89cc3ad4202ff0e715f4a3bccb128ec6736fe2f3e412c7fd649b

SHA512
50934a6fe40dddff88e6ef4e0d3d10d0175d3074f7d0192ce922142b75567ca9b2a8c8f0e0b84e4861cf6bfae75fd84a11ba819c19cbe2b68cd2bd6f0af3e256

Download Submit
memory/920-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/920-1-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/920-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/920-3-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/920-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1396-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1396-22-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/1396-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/1396-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download