Malware Analysis Report

2024-10-23 21:07

Sample ID 201109-6kz36b2lbe
Target FDA_certs.exe
SHA256 246fb765947ed62ef616f5f714642ff0db639983582c0fa2cbab9ad251669b78
Tags
snakebot snakebot remcos rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK

Enterprise Matrix V6

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

246fb765947ed62ef616f5f714642ff0db639983582c0fa2cbab9ad251669b78

Threat Level: Known bad

The file FDA_certs.exe was found to be: Known bad.

Malicious Activity Summary

snakebot snakebot remcos rat

Remcos

Snakebot family

Contains SnakeBOT related strings

Suspicious use of SetThreadContext

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Creates scheduled task(s)

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2020-11-09 19:37

Signatures

Snakebot family

snakebot

Contains SnakeBOT related strings

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

Analysis: behavioral1

Detonation Overview

Submitted

2020-11-09 19:37

Reported

2020-11-09 22:17

Platform

win7v20201028

Max time kernel

125s

Max time network

133s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe"

Signatures

Remcos

rat remcos

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 2036 set thread context of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe

Creates scheduled task(s)

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2036 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\SysWOW64\schtasks.exe
PID 2036 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\SysWOW64\schtasks.exe
PID 2036 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\SysWOW64\schtasks.exe
PID 2036 wrote to memory of 1928 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\SysWOW64\schtasks.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 2036 wrote to memory of 1972 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe

"C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HXAjzs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp21D3.tmp"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe

"{path}"

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 kmt.duckdns.org udp
N/A 192.169.69.25:3039 kmt.duckdns.org tcp
N/A 8.8.8.8:53 kmt-2.duckdns.org udp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp
N/A 8.8.8.8:53 kmt.duckdns.org udp
N/A 192.169.69.25:3039 kmt.duckdns.org tcp
N/A 8.8.8.8:53 kmt-2.duckdns.org udp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp

Files

memory/1760-115-0x000007FEF6B90000-0x000007FEF6E0A000-memory.dmp

memory/1928-116-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\tmp21D3.tmp

MD5 3e1859204b8ba4c248e4703e4b9c2b66
SHA1 d9d3ee93064dfce080010bc3bfe20708061a8acc
SHA256 a54cdba41a97a1495eb87e2ba0179bddea6003f6f400588c07391e091f55255f
SHA512 36b0a6953ce754f4bd82735a68e0f6b43063b9ef14d242ce5fa4c829c1b516b1b10e185df2eb1231c294bbc1e4176a4afe8f9aa8e3d70200c440466e9e1c63fc

memory/1972-118-0x0000000000400000-0x0000000000417000-memory.dmp

memory/1972-119-0x000000000040FD88-mapping.dmp

memory/1972-120-0x0000000000400000-0x0000000000417000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-11-09 19:37

Reported

2020-11-09 22:17

Platform

win10v20201028

Max time kernel

149s

Max time network

154s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe"

Signatures

Remcos

rat remcos

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 4724 set thread context of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe

Creates scheduled task(s)

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

Suspicious behavior: EnumeratesProcesses

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

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe N/A

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4724 wrote to memory of 4160 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\SysWOW64\schtasks.exe
PID 4724 wrote to memory of 4160 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\SysWOW64\schtasks.exe
PID 4724 wrote to memory of 4160 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\SysWOW64\schtasks.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
PID 4724 wrote to memory of 3212 N/A C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe

"C:\Users\Admin\AppData\Local\Temp\FDA_certs.exe"

C:\Windows\SysWOW64\schtasks.exe

"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HXAjzs" /XML "C:\Users\Admin\AppData\Local\Temp\tmp42AC.tmp"

C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe

"{path}"

Network

Country Destination Domain Proto
N/A 8.8.8.8:53 www.google.com.br udp
N/A 172.217.19.195:443 www.google.com.br tcp
N/A 8.8.8.8:53 www.google.com udp
N/A 172.217.20.100:443 www.google.com tcp
N/A 8.8.8.8:53 kmt.duckdns.org udp
N/A 192.169.69.25:3039 kmt.duckdns.org tcp
N/A 8.8.8.8:53 kmt-2.duckdns.org udp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp
N/A 85.187.154.178:587 tcp
N/A 8.8.8.8:53 kmt.duckdns.org udp
N/A 192.169.69.25:3039 kmt.duckdns.org tcp
N/A 8.8.8.8:53 kmt-2.duckdns.org udp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp
N/A 192.169.69.25:3039 kmt-2.duckdns.org tcp

Files

memory/4160-2-0x0000000000000000-mapping.dmp

C:\Users\Admin\AppData\Local\Temp\tmp42AC.tmp

MD5 a4bd966064b55755a36be1fd03eb731e
SHA1 2c62ca908bf6c44f0898cbc3e406be5122590061
SHA256 9f7c343fd0ac869ed681dd3b1798bb1a081689d0350a4eeea4252e19b9d13411
SHA512 624fbb372f2bf8c69bb5899221f1d4566a973ffc3afd6672c969d7869b946e85aae7bfbfcbcb08d9c122c3586be3b077b2ae09dc81922727a62eccec665d5089

memory/3212-4-0x0000000000400000-0x0000000000417000-memory.dmp

memory/3212-5-0x000000000040FD88-mapping.dmp

memory/3212-6-0x0000000000400000-0x0000000000417000-memory.dmp