kinsing | 17f59059ae0e742931a9d320e3a42c0237fc224b64eec4d653d3b5fa255d5d59

Analysis

max time kernel
141s
max time network
148s
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 17:12

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General

Target

750fc1e9564d60b5c828375a9fc3ad96.exe
Size

133KB
MD5

750fc1e9564d60b5c828375a9fc3ad96
SHA1

53283f0e09c78f995f5dd99a12988fb23f4cbf54
SHA256

17f59059ae0e742931a9d320e3a42c0237fc224b64eec4d653d3b5fa255d5d59
SHA512

0c377a519ed8c19d96412a6ee6efc7c9da9919776fef20d848b1cd5b59d2aaf0e167d9b814479992c95cab3c5802917a2d27eececefbf2f6ff59abf2875ad1d1
SSDEEP

1536:SKcR4mjD9r823FGHiTsNmkYAuiaT3EPGV6TFvTZBUPBn9zqwd6qbjFQ4veUx3Nw6:SKcWmjRrz39wNmnYB1KPNR7BPwscAvX

Score

10^/10

kinsing loader persistence spyware stealer upx

Malware Config

Signatures

Kinsing
Kinsing is a loader written in Golang.
loader kinsing
Executes dropped EXE 2 IoCs

Processes:

YoAT5XUe1unn2mG.exeCTS.exe

pid process

4416 YoAT5XUe1unn2mG.exe
4764 CTS.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

pid	process
4416	YoAT5XUe1unn2mG.exe
4764	CTS.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/memory/516-0-0x0000000000390000-0x00000000003A7000-memory.dmp	upx
behavioral2/memory/516-8-0x0000000000390000-0x00000000003A7000-memory.dmp	upx
behavioral2/memory/4764-9-0x0000000000F30000-0x0000000000F47000-memory.dmp	upx
C:\Windows\CTS.exe	upx
C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

CTS.exe750fc1e9564d60b5c828375a9fc3ad96.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	CTS.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\CTS = "C:\\Windows\\CTS.exe"	750fc1e9564d60b5c828375a9fc3ad96.exe

Drops file in Windows directory 2 IoCs

Processes:

750fc1e9564d60b5c828375a9fc3ad96.exeCTS.exe

description ioc process

File created C:\Windows\CTS.exe 750fc1e9564d60b5c828375a9fc3ad96.exe
File created C:\Windows\CTS.exe CTS.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

750fc1e9564d60b5c828375a9fc3ad96.exeCTS.exe

description pid process

Token: SeDebugPrivilege 516 750fc1e9564d60b5c828375a9fc3ad96.exe
Token: SeDebugPrivilege 4764 CTS.exe

description	ioc	process
File created	C:\Windows\CTS.exe	750fc1e9564d60b5c828375a9fc3ad96.exe
File created	C:\Windows\CTS.exe	CTS.exe

description	pid	process
Token: SeDebugPrivilege	516	750fc1e9564d60b5c828375a9fc3ad96.exe
Token: SeDebugPrivilege	4764	CTS.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

750fc1e9564d60b5c828375a9fc3ad96.exe

description	pid	process	target process
PID 516 wrote to memory of 4416	516	750fc1e9564d60b5c828375a9fc3ad96.exe	YoAT5XUe1unn2mG.exe
PID 516 wrote to memory of 4416	516	750fc1e9564d60b5c828375a9fc3ad96.exe	YoAT5XUe1unn2mG.exe
PID 516 wrote to memory of 4764	516	750fc1e9564d60b5c828375a9fc3ad96.exe	CTS.exe
PID 516 wrote to memory of 4764	516	750fc1e9564d60b5c828375a9fc3ad96.exe	CTS.exe
PID 516 wrote to memory of 4764	516	750fc1e9564d60b5c828375a9fc3ad96.exe	CTS.exe

C:\Users\Admin\AppData\Local\Temp\750fc1e9564d60b5c828375a9fc3ad96.exe
"C:\Users\Admin\AppData\Local\Temp\750fc1e9564d60b5c828375a9fc3ad96.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:516

C:\Users\Admin\AppData\Local\Temp\YoAT5XUe1unn2mG.exe
C:\Users\Admin\AppData\Local\Temp\YoAT5XUe1unn2mG.exe
2⤵
- Executes dropped EXE
PID:4416

C:\Windows\CTS.exe
"C:\Windows\CTS.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
PID:4764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\Office\16.0\excel.exe_Rules.xml
Filesize
352KB

MD5
eed2b535513e4414b835b8aa120a02d2

SHA1
451d903ded800e838c9282417d6359b1aa045a75

SHA256
c853a5be2b321bf01a1a72a314afaba5884a432520c7a8729e397aadee098209

SHA512
2a727c21a2fa6b9ba7f240e23ab23de592d6db223d26c8f3ec6e0b30177468c930d1f4cf186b40e6863be7658885399023738e6a288c388e35716235e4c3fd58

Download Submit
C:\Users\Admin\AppData\Local\Temp\YoAT5XUe1unn2mG.exe
Filesize
103KB

MD5
6e5a78d1702531b72ef60b5fae57a752

SHA1
0ce7e1172989a55d9cc07e204af0b00b22d2ea7c

SHA256
a00a877acefcad45953343ad56a22152f7aaba5fcf2a10215d84169d47fbcd1d

SHA512
23b3094d77f876b6ff9286aea1f5e61bb6909f2b66abda02be21862956712fc33ed241a0d40d0f30aa52eecb240b139468606cffa4e11ee87b6b27bd05d8f0a3

Download Submit
C:\Windows\CTS.exe
Filesize
29KB

MD5
70aa23c9229741a9b52e5ce388a883ac

SHA1
b42683e21e13de3f71db26635954d992ebe7119e

SHA256
9d25cc704b1c00c9d17903e25ca35c319663e997cb9da0b116790b639e9688f2

SHA512
be604a2ad5ab8a3e5edb8901016a76042ba873c8d05b4ef8eec31241377ec6b2a883b51c6912dc7640581ffa624547db334683975883ae74e62808b5ae9ab0b5

Download Submit
memory/516-0-0x0000000000390000-0x00000000003A7000-memory.dmp

Filesize
92KB

Download
memory/516-8-0x0000000000390000-0x00000000003A7000-memory.dmp

Filesize
92KB

Download
memory/4764-9-0x0000000000F30000-0x0000000000F47000-memory.dmp

Filesize
92KB

Download