Malware Analysis Report

2024-10-23 21:13

Sample ID 240125-v5bf2scffl
Target 751b0391c47ac27fd5880602095c2b75
SHA256 69e62c01d01514823c9f50a77e79b456241aed9f23596e48d78490d227fbb18b
Tags
kinsing loader
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V15

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

69e62c01d01514823c9f50a77e79b456241aed9f23596e48d78490d227fbb18b

Threat Level: Known bad

The file 751b0391c47ac27fd5880602095c2b75 was found to be: Known bad.

Malicious Activity Summary

kinsing loader

Kinsing

Executes dropped EXE

Loads dropped DLL

Deletes itself

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Kills process with taskkill

Suspicious use of AdjustPrivilegeToken

Runs ping.exe

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-01-25 17:33

Signatures

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral1

Detonation Overview

Submitted

2024-01-25 17:33

Reported

2024-01-25 17:36

Platform

win7-20231129-en

Max time kernel

121s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe"

Signatures

Deletes itself

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\exoxrrnev.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Windows\SysWOW64\cmd.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\exoxrrnev.exe N/A

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 780 wrote to memory of 2140 N/A C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe C:\Windows\SysWOW64\cmd.exe
PID 780 wrote to memory of 2140 N/A C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe C:\Windows\SysWOW64\cmd.exe
PID 780 wrote to memory of 2140 N/A C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe C:\Windows\SysWOW64\cmd.exe
PID 780 wrote to memory of 2140 N/A C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe C:\Windows\SysWOW64\cmd.exe
PID 2140 wrote to memory of 1916 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2140 wrote to memory of 1916 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2140 wrote to memory of 1916 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2140 wrote to memory of 1916 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\taskkill.exe
PID 2140 wrote to memory of 2596 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2140 wrote to memory of 2596 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2140 wrote to memory of 2596 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2140 wrote to memory of 2596 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows\SysWOW64\PING.EXE
PID 2140 wrote to memory of 2980 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\exoxrrnev.exe
PID 2140 wrote to memory of 2980 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\exoxrrnev.exe
PID 2140 wrote to memory of 2980 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\exoxrrnev.exe
PID 2140 wrote to memory of 2980 N/A C:\Windows\SysWOW64\cmd.exe C:\Users\Admin\AppData\Local\exoxrrnev.exe

Processes

C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe

"C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe"

C:\Windows\SysWOW64\taskkill.exe

taskkill /f /pid 780

C:\Windows\SysWOW64\PING.EXE

ping -n 3 127.1

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /f /pid 780 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe" & start C:\Users\Admin\AppData\Local\EXOXRR~1.EXE -f

C:\Users\Admin\AppData\Local\exoxrrnev.exe

C:\Users\Admin\AppData\Local\EXOXRR~1.EXE -f

Network

N/A

Files

memory/780-0-0x0000000001000000-0x0000000001102000-memory.dmp

memory/780-2-0x0000000000220000-0x0000000000245000-memory.dmp

memory/780-3-0x0000000001000000-0x0000000001102000-memory.dmp

memory/780-5-0x0000000001000000-0x0000000001102000-memory.dmp

memory/780-4-0x0000000000330000-0x0000000000332000-memory.dmp

C:\Users\Admin\AppData\Local\exoxrrnev.exe

MD5 f8b5efff2c5d4ea32ae3acf564f24a2a
SHA1 bbb9422f26226c888a9d35030a1b8a26fbe944c9
SHA256 7b20bb388d146247669332df0240405fffceb7132f76df631bcc0eadc0c58cbd
SHA512 063d0dd479833cbb1a39230f8a0231c46bb922d100cec09e95cd86bf49d203827b82026a2dc00335a408662023382845ba4e1772edddbd25ff44ef42e662215f

memory/2980-15-0x0000000000380000-0x0000000000382000-memory.dmp

memory/2980-17-0x0000000000220000-0x0000000000245000-memory.dmp

memory/2980-16-0x0000000000CE0000-0x0000000000DE2000-memory.dmp

memory/2980-14-0x0000000001000000-0x0000000001102000-memory.dmp

memory/2140-9-0x00000000023B0000-0x00000000024B2000-memory.dmp

memory/2980-13-0x0000000000370000-0x0000000000371000-memory.dmp

\Users\Admin\AppData\Local\exoxrrnev.exe

MD5 c8d63645f19570de282924406a2e87c4
SHA1 bd00538116ee2bb85f1255511416d79887048204
SHA256 348c1cf289e1a3c2261500fbcb2bdedd270e33adf437ac83281e9e6bc5603b0f
SHA512 63a6f27fbfc8ca9e86c32edf42792068f3032d98179b1ffaf85db95c2201fb4892d30208f1a14a041be8bedd2a67566992e2b74885d560ae78908e0ca7e428bf

memory/2980-11-0x0000000001000000-0x0000000001102000-memory.dmp

C:\Users\Admin\AppData\Local\exoxrrnev.exe

MD5 3e5ae3ad340ad00f3e816c0ce0298cf8
SHA1 aece1b468e6bf4c834c91a07534718b08a601202
SHA256 1ee863a6be9a1193c3b1522339e902826d4934653b309d5b03055b08a6202348
SHA512 1c72f8e322ed5e6c4bd7882a4e7fc4908edf9b2ba7ae14c34b958d80fe517f2a691d8105f6d21d002ba2db36fd678e839350bb7cbc7a1e1494f36a92c3b5c945

\Users\Admin\AppData\Local\exoxrrnev.exe

MD5 47cd759d03a280062d4c2ec14d3ef923
SHA1 0a066211f332b5a943e041b6d9e65f09558f4936
SHA256 1ae064585c094a93cf4834b4ec5dc1b0f67e660d17f0043587cd03edb37e7110
SHA512 88956e9a3f439ff65db6736be481ad04f5018441131e34c9ea174c82de15dda8123a13f7115664c120183f72460a63c93ed885d3db62a195c302274fede1677d

\Users\Admin\AppData\Local\exoxrrnev.exe

MD5 472f38f7a2196d7ff69442c538d4e5e6
SHA1 7a7279b1694aeab19465cf4e68696f96fa0cddd2
SHA256 8f7923236f802f0403240a9c1bb8c75925f11ba5b012e42038ebda83b3dd9f9b
SHA512 99abfbeb938a8c57716ba953ccf377f89988662b74991a1f79b486b4946ad9ea950234c6c251c1e455395d0760f9fde7d0ffbd0af9a2d7e1f55c03b899995448

memory/2980-18-0x0000000000370000-0x0000000000371000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-01-25 17:33

Reported

2024-01-25 17:36

Platform

win10v2004-20231215-en

Max time kernel

147s

Max time network

145s

Command Line

"C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe"

Signatures

Kinsing

loader kinsing

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\oztdohk.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\oztdohk.exe N/A

Enumerates physical storage devices

Kills process with taskkill

evasion
Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\taskkill.exe N/A

Runs ping.exe

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\PING.EXE N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\taskkill.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe

"C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe"

C:\Windows\SysWOW64\cmd.exe

"C:\Windows\System32\cmd.exe" /c taskkill /f /pid 4072 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\751b0391c47ac27fd5880602095c2b75.exe" & start C:\Users\Admin\AppData\Local\oztdohk.exe -f

C:\Windows\SysWOW64\taskkill.exe

taskkill /f /pid 4072

C:\Windows\SysWOW64\PING.EXE

ping -n 3 127.1

C:\Users\Admin\AppData\Local\oztdohk.exe

C:\Users\Admin\AppData\Local\oztdohk.exe -f

Network

Country Destination Domain Proto
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 194.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 0.181.190.20.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 86.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 206.23.85.13.in-addr.arpa udp
US 8.8.8.8:53 134.71.91.104.in-addr.arpa udp
US 138.91.171.81:80 tcp
US 8.8.8.8:53 173.178.17.96.in-addr.arpa udp
US 8.8.8.8:53 13.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 16.173.189.20.in-addr.arpa udp

Files

memory/4072-0-0x0000000001000000-0x0000000001102000-memory.dmp

memory/4072-1-0x00000000006A0000-0x00000000006C5000-memory.dmp

memory/4072-2-0x0000000000DB0000-0x0000000000DB1000-memory.dmp

memory/4072-3-0x0000000001000000-0x0000000001102000-memory.dmp

memory/4072-4-0x0000000000DC0000-0x0000000000DC2000-memory.dmp

memory/4072-5-0x0000000001000000-0x0000000001102000-memory.dmp

memory/4072-7-0x0000000001000000-0x0000000001102000-memory.dmp

memory/4072-8-0x00000000006A0000-0x00000000006C5000-memory.dmp

C:\Users\Admin\AppData\Local\oztdohk.exe

MD5 751b0391c47ac27fd5880602095c2b75
SHA1 57bb747fc1bff49bb43598d4e9ef035589ff8a65
SHA256 69e62c01d01514823c9f50a77e79b456241aed9f23596e48d78490d227fbb18b
SHA512 7ac38504d483601ec7dc660559f23b75d127a82091eba15f50f4f62d715c8d327f5950c5cc99ba7cf31c1f60c2457ff8fa6fc3691dffb60abca7a355eb7ae607

memory/4028-12-0x0000000000440000-0x0000000000465000-memory.dmp

memory/4028-13-0x0000000000B70000-0x0000000000B71000-memory.dmp

memory/4028-14-0x0000000001000000-0x0000000001102000-memory.dmp

memory/4028-15-0x0000000000B90000-0x0000000000B92000-memory.dmp

memory/4028-18-0x0000000000B70000-0x0000000000B71000-memory.dmp

memory/4028-19-0x0000000001000000-0x0000000001102000-memory.dmp