Malware Analysis Report

2024-11-15 08:56

Sample ID 200918-qehb59ykze
Target Docum_nt_Pr_view.exe
SHA256 94ba896b284005a58298806bba47f725cdcaa1816b3c79226639cb145bf16886
Tags
buer loader persistence
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

94ba896b284005a58298806bba47f725cdcaa1816b3c79226639cb145bf16886

Threat Level: Known bad

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

Malicious Activity Summary

buer loader persistence

Buer

Modifies WinLogon for persistence

Buer Loader

Executes dropped EXE

Deletes itself

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2020-09-18 13:41

Signatures

N/A

Analysis: behavioral1

Detonation Overview

Submitted

2020-09-18 13:41

Reported

2020-09-18 13:43

Platform

win7

Max time kernel

31s

Max time network

14s

Command Line

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

Signatures

Buer

loader buer

Buer Loader

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

Processes

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

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

Network

N/A

Files

memory/1104-0-0x0000000000340000-0x000000000034F000-memory.dmp

memory/1104-1-0x0000000040000000-0x000000004000C000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2020-09-18 13:41

Reported

2020-09-18 13:43

Platform

win10v200722

Max time kernel

118s

Max time network

113s

Command Line

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

Signatures

Buer

loader buer

Modifies WinLogon for persistence

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe, \"C:\\ProgramData\\7e1bd100aba6f2ec5a2b\\gennt.exe\"" C:\ProgramData\7e1bd100aba6f2ec5a2b\gennt.exe N/A

Buer Loader

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\ProgramData\7e1bd100aba6f2ec5a2b\gennt.exe N/A

Deletes itself

Description Indicator Process Target
N/A N/A C:\ProgramData\7e1bd100aba6f2ec5a2b\gennt.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe N/A

Processes

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

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

C:\ProgramData\7e1bd100aba6f2ec5a2b\gennt.exe

C:\ProgramData\7e1bd100aba6f2ec5a2b\gennt.exe "C:\Users\Admin\AppData\Local\Temp\Docum_nt_Pr_view.exe" ensgJJ

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -Command "& {Add-MpPreference -ExclusionPath C:\ProgramData\7e1bd100aba6f2ec5a2b}"

Network

N/A

Files

memory/3608-0-0x0000000000710000-0x000000000071F000-memory.dmp

memory/3608-1-0x0000000040000000-0x000000004000C000-memory.dmp

memory/752-2-0x0000000000000000-mapping.dmp

C:\ProgramData\7e1bd100aba6f2ec5a2b\gennt.exe

MD5 96878fda61a76395aafa16a6150b0fe1
SHA1 3509a916a873351ab23bc671cce5ca9aa3299e62
SHA256 94ba896b284005a58298806bba47f725cdcaa1816b3c79226639cb145bf16886
SHA512 4e98e7b32441d270496b35c13e16ca0fedfca10e8baf8cb92a0a54fc803fb2bbfbc3417fe22467c195655821167d068a0ccde3310b45c75cada677ccea638234

C:\ProgramData\7e1bd100aba6f2ec5a2b\gennt.exe

MD5 96878fda61a76395aafa16a6150b0fe1
SHA1 3509a916a873351ab23bc671cce5ca9aa3299e62
SHA256 94ba896b284005a58298806bba47f725cdcaa1816b3c79226639cb145bf16886
SHA512 4e98e7b32441d270496b35c13e16ca0fedfca10e8baf8cb92a0a54fc803fb2bbfbc3417fe22467c195655821167d068a0ccde3310b45c75cada677ccea638234

memory/3088-7-0x0000000000000000-mapping.dmp

memory/3088-8-0x0000000073E00000-0x00000000744EE000-memory.dmp

memory/3088-9-0x0000000001240000-0x0000000001241000-memory.dmp

memory/3088-10-0x0000000006F60000-0x0000000006F61000-memory.dmp

memory/3088-11-0x0000000006CB0000-0x0000000006CB1000-memory.dmp

memory/3088-12-0x0000000006E50000-0x0000000006E51000-memory.dmp

memory/3088-13-0x0000000006EC0000-0x0000000006EC1000-memory.dmp

memory/3088-14-0x0000000007860000-0x0000000007861000-memory.dmp

memory/3088-15-0x00000000075E0000-0x00000000075E1000-memory.dmp

memory/3088-16-0x0000000008060000-0x0000000008061000-memory.dmp

memory/3088-17-0x0000000007E60000-0x0000000007E61000-memory.dmp

memory/3088-19-0x0000000008C00000-0x0000000008C33000-memory.dmp

memory/3088-26-0x0000000008BE0000-0x0000000008BE1000-memory.dmp

memory/3088-27-0x0000000008FA0000-0x0000000008FA1000-memory.dmp

memory/3088-28-0x0000000009130000-0x0000000009131000-memory.dmp

memory/3088-29-0x00000000069F0000-0x00000000069F1000-memory.dmp

memory/3088-31-0x00000000069E0000-0x00000000069E1000-memory.dmp