Malware Analysis Report

2025-01-02 03:20

Sample ID 240403-tdt9eafe96
Target 0028BGL880-2024.PDF.exe
SHA256 f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63
Tags
modiloader trojan remcos remotehost collection persistence rat spyware stealer
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

f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63

Threat Level: Known bad

The file 0028BGL880-2024.PDF.exe was found to be: Known bad.

Malicious Activity Summary

modiloader trojan remcos remotehost collection persistence rat spyware stealer

ModiLoader, DBatLoader

Remcos

ModiLoader Second Stage

NirSoft MailPassView

Nirsoft

NirSoft WebBrowserPassView

Executes dropped EXE

Loads dropped DLL

Reads user/profile data of web browsers

Adds Run key to start application

Accesses Microsoft Outlook accounts

Suspicious use of SetThreadContext

Unsigned PE

Program crash

Suspicious use of WriteProcessMemory

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Script User-Agent

Suspicious behavior: EnumeratesProcesses

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-03 15:56

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-03 15:56

Reported

2024-04-03 15:59

Platform

win7-20231129-en

Max time kernel

140s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

ModiLoader Second Stage

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

Processes

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe

"C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1724 -s 788

Network

Country Destination Domain Proto
US 8.8.8.8:53 1016.filemail.com udp
US 192.240.97.18:443 1016.filemail.com tcp
US 192.240.97.18:443 1016.filemail.com tcp

Files

memory/1724-0-0x0000000000220000-0x0000000000221000-memory.dmp

memory/1724-1-0x0000000003200000-0x0000000004200000-memory.dmp

memory/1724-2-0x0000000003200000-0x0000000004200000-memory.dmp

memory/1724-4-0x0000000000400000-0x00000000005AF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-03 15:56

Reported

2024-04-03 15:59

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

Remcos

rat remcos

ModiLoader Second Stage

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

NirSoft MailPassView

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

NirSoft WebBrowserPassView

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

Nirsoft

Description Indicator Process Target
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
N/A N/A N/A N/A
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:\Windows \System32\1341595.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows \System32\1341595.exe N/A

Reads user/profile data of web browsers

spyware stealer

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-983155329-280873152-1838004294-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dkesuvii = "C:\\Users\\Public\\Dkesuvii.url" C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe N/A

Script User-Agent

Description Indicator Process Target
HTTP User-Agent header Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) N/A N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2748 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 5060 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 2180 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2748 wrote to memory of 2632 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\cmd.exe
PID 2632 wrote to memory of 1736 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\1341595.exe
PID 2632 wrote to memory of 1736 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\1341595.exe
PID 1736 wrote to memory of 3168 N/A C:\Windows \System32\1341595.exe C:\Windows\system32\cmd.exe
PID 1736 wrote to memory of 3168 N/A C:\Windows \System32\1341595.exe C:\Windows\system32\cmd.exe
PID 3168 wrote to memory of 1228 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 3168 wrote to memory of 1228 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1228 wrote to memory of 812 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1228 wrote to memory of 812 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2748 wrote to memory of 1296 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\extrac32.exe
PID 2748 wrote to memory of 1296 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\extrac32.exe
PID 2748 wrote to memory of 1296 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Windows\SysWOW64\extrac32.exe
PID 2748 wrote to memory of 2460 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 2460 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 2460 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 3944 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 3944 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 3944 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe
PID 2748 wrote to memory of 2816 N/A C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe

Processes

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe

"C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe"

C:\Windows\SysWOW64\cmd.exe

cmd /c mkdir "\\?\C:\Windows "

C:\Windows\SysWOW64\cmd.exe

cmd /c mkdir "\\?\C:\Windows \System32"

C:\Windows\SysWOW64\cmd.exe

cmd /c "C:\Windows \System32\1341595.exe"

C:\Windows \System32\1341595.exe

"C:\Windows \System32\1341595.exe"

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""

C:\Windows\system32\cmd.exe

cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe

powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"

C:\Windows\SysWOW64\extrac32.exe

C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe C:\\Users\\Public\\Libraries\\Dkesuvii.PIF

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\ywcspivefzyuqzfzrjgashtnurlsdaqzr"

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\aqhkq"

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe

C:\Users\Admin\AppData\Local\Temp\0028BGL880-2024.PDF.exe /stext "C:\Users\Admin\AppData\Local\Temp\lsmvilyz"

Network

Country Destination Domain Proto
US 8.8.8.8:53 228.249.119.40.in-addr.arpa udp
US 8.8.8.8:53 227.66.18.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 1016.filemail.com udp
US 192.240.97.18:443 1016.filemail.com tcp
US 192.240.97.18:443 1016.filemail.com tcp
US 8.8.8.8:53 18.97.240.192.in-addr.arpa udp
US 8.8.8.8:53 154.239.44.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 8.8.8.8:53 8.101.3.192.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net udp
US 192.3.101.8:55677 tcp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 103.169.127.40.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 145.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 48.229.111.52.in-addr.arpa udp
US 8.8.8.8:53 24.173.189.20.in-addr.arpa udp

Files

memory/2748-0-0x0000000000760000-0x0000000000761000-memory.dmp

memory/2748-1-0x0000000002B10000-0x0000000003B10000-memory.dmp

memory/2748-2-0x0000000002B10000-0x0000000003B10000-memory.dmp

memory/2748-4-0x0000000000400000-0x00000000005AF000-memory.dmp

C:\Windows \System32\1341595.exe

MD5 231ce1e1d7d98b44371ffff407d68b59
SHA1 25510d0f6353dbf0c9f72fc880de7585e34b28ff
SHA256 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96
SHA512 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612

C:\Windows \System32\netutils.dll

MD5 8541304aadba4ae8620bb2699f6e0437
SHA1 e0b28a6ecd32d3789433217364c1006de9892df8
SHA256 50573c81e5773c13a5411e8446d7fb17956865675782239818f7affd40a2fecb
SHA512 c18b1233c138229705242e1cdc00970e45e414d8da9c643b1196ec9de261ae18076e22bed6fcc48c07d1f0e851469db9147f083f3c3c76a26b75994419392455

memory/1736-15-0x00000000613C0000-0x00000000613E3000-memory.dmp

C:\windows \system32\KDECO.bat

MD5 c545650595b479c81ad6b9d8882aae39
SHA1 7a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA256 a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
SHA512 85ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3

memory/812-17-0x0000020854550000-0x0000020854572000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cqfbho2t.1za.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/812-27-0x00007FFC1D190000-0x00007FFC1DC51000-memory.dmp

memory/812-28-0x0000020839DA0000-0x0000020839DB0000-memory.dmp

memory/812-29-0x0000020839DA0000-0x0000020839DB0000-memory.dmp

memory/812-32-0x00007FFC1D190000-0x00007FFC1DC51000-memory.dmp

memory/2748-39-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-41-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-42-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-43-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-44-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-46-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-49-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-50-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-51-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-52-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2460-53-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3944-54-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2460-60-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2460-63-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3944-62-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3944-67-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2460-72-0x0000000000400000-0x0000000000478000-memory.dmp

memory/2816-75-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2816-77-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3944-73-0x0000000000400000-0x0000000000462000-memory.dmp

memory/2816-71-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2816-66-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2816-59-0x0000000000400000-0x0000000000424000-memory.dmp

memory/2460-81-0x0000000000400000-0x0000000000478000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\ywcspivefzyuqzfzrjgashtnurlsdaqzr

MD5 63a3d218b0d233efc9806729feba705a
SHA1 3cda6c59e0b8115d8538c8ff0d94a49294d516ac
SHA256 66ceb453b5931baa8d942d514cc1dcc41a24ab59313c0621daa9920bd0566bfd
SHA512 d0cfb106b57a4e90523c194d073a131bc65461d8e792b0be51aef89aa413dded53c2aba723fc677f68b1211411a0e105b5771cafa045d3e11d54db578577b683

memory/2748-84-0x000000002E090000-0x000000002E0A9000-memory.dmp

memory/2748-88-0x000000002E090000-0x000000002E0A9000-memory.dmp

memory/2748-89-0x000000002E090000-0x000000002E0A9000-memory.dmp

memory/2748-87-0x000000002E090000-0x000000002E0A9000-memory.dmp

memory/2748-90-0x000000002E090000-0x000000002E0A9000-memory.dmp

memory/2748-91-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-93-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-97-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-98-0x00000000153F0000-0x00000000163F0000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 c70b1c00ce50f34fb9b6e5a0c3052e37
SHA1 d802e3e5653d008e2b642dd731aacb4a0e8b2b9d
SHA256 2a74ebc0b86d6aa3d0741c63925ab01fea482ab4585882a964c61782d8da5c44
SHA512 3ade97169e2239ec9fd23dd137a9eded86f9f69d3170cfa7dd78e26785bf0eb433cd5fe34e41585ef11b9bb3557007133970f67292db205254d6d0cc9a7d2d3e

memory/2748-102-0x000000002E090000-0x000000002E0A9000-memory.dmp

memory/2748-109-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-110-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-120-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-121-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-131-0x00000000153F0000-0x00000000163F0000-memory.dmp

memory/2748-132-0x00000000153F0000-0x00000000163F0000-memory.dmp