Malware Analysis Report

2025-01-02 03:19

Sample ID 240326-p4gc1sdf2s
Target PI-BD2403001.exe
SHA256 373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3
Tags
modiloader trojan remcos remotehost persistence rat
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

373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3

Threat Level: Known bad

The file PI-BD2403001.exe was found to be: Known bad.

Malicious Activity Summary

modiloader trojan remcos remotehost persistence rat

ModiLoader, DBatLoader

Remcos

ModiLoader Second Stage

Loads dropped DLL

Executes dropped EXE

Adds Run key to start application

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

Suspicious behavior: EnumeratesProcesses

Script User-Agent

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-26 12:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-26 12:52

Reported

2024-03-26 12:55

Platform

win7-20240221-en

Max time kernel

130s

Max time network

135s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

ModiLoader Second Stage

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

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe

Processes

C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe

"C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2020 -s 720

Network

Country Destination Domain Proto
US 8.8.8.8:53 1021.filemail.com udp
US 23.237.82.74:443 1021.filemail.com tcp
US 23.237.82.74:443 1021.filemail.com tcp

Files

memory/2020-0-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2020-1-0x0000000002D00000-0x0000000003D00000-memory.dmp

memory/2020-2-0x0000000002D00000-0x0000000003D00000-memory.dmp

memory/2020-4-0x0000000000230000-0x0000000000231000-memory.dmp

memory/2020-5-0x0000000000400000-0x0000000000527000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-26 12:52

Reported

2024-03-26 12:55

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

Remcos

rat remcos

ModiLoader Second Stage

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

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Windows \System32\7617241.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows \System32\7617241.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Qbijgrcm = "C:\\Users\\Public\\Qbijgrcm.url" C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.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

Suspicious use of SetWindowsHookEx

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 2364 wrote to memory of 4444 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 4444 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 4444 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 5100 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 5100 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 5100 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 3728 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 3728 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 2364 wrote to memory of 3728 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\cmd.exe
PID 3728 wrote to memory of 648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\7617241.exe
PID 3728 wrote to memory of 648 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\7617241.exe
PID 648 wrote to memory of 3684 N/A C:\Windows \System32\7617241.exe C:\Windows\system32\cmd.exe
PID 648 wrote to memory of 3684 N/A C:\Windows \System32\7617241.exe C:\Windows\system32\cmd.exe
PID 3684 wrote to memory of 4456 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 3684 wrote to memory of 4456 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 4456 wrote to memory of 2840 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4456 wrote to memory of 2840 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 2364 wrote to memory of 4132 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\extrac32.exe
PID 2364 wrote to memory of 4132 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\extrac32.exe
PID 2364 wrote to memory of 4132 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\extrac32.exe
PID 2364 wrote to memory of 2508 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\SndVol.exe
PID 2364 wrote to memory of 2508 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\SndVol.exe
PID 2364 wrote to memory of 2508 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\SndVol.exe
PID 2364 wrote to memory of 2508 N/A C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe C:\Windows\SysWOW64\SndVol.exe

Processes

C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.exe

"C:\Users\Admin\AppData\Local\Temp\PI-BD2403001.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\7617241.exe"

C:\Windows \System32\7617241.exe

"C:\Windows \System32\7617241.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\PI-BD2403001.exe C:\\Users\\Public\\Libraries\\Qbijgrcm.PIF

C:\Windows\SysWOW64\SndVol.exe

C:\Windows\System32\SndVol.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 17.53.126.40.in-addr.arpa udp
US 8.8.8.8:53 29.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 8.8.8.8:53 241.154.82.20.in-addr.arpa udp
US 204.79.197.200:443 g.bing.com tcp
US 8.8.8.8:53 200.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 88.156.103.20.in-addr.arpa udp
US 8.8.8.8:53 41.110.16.96.in-addr.arpa udp
US 8.8.8.8:53 50.23.12.20.in-addr.arpa udp
US 8.8.8.8:53 1021.filemail.com udp
US 23.237.82.74:443 1021.filemail.com tcp
US 23.237.82.74:443 1021.filemail.com tcp
US 8.8.8.8:53 74.82.237.23.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 100.5.17.2.in-addr.arpa udp
US 8.8.8.8:53 119.110.54.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 75.134.221.88.in-addr.arpa udp
N/A 127.0.0.1:47212 tcp
US 8.8.8.8:53 officerem.duckdns.org udp
US 23.95.235.29:47212 officerem.duckdns.org tcp
US 8.8.8.8:53 geoplugin.net udp
US 8.8.8.8:53 29.235.95.23.in-addr.arpa udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 32.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 14.227.111.52.in-addr.arpa udp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
US 8.8.8.8:53 18.134.221.88.in-addr.arpa udp
US 8.8.8.8:53 37.179.17.96.in-addr.arpa udp
US 8.8.8.8:53 57.169.31.20.in-addr.arpa udp
US 8.8.8.8:53 90.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 tse1.mm.bing.net udp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp
US 204.79.197.200:443 tse1.mm.bing.net tcp

Files

memory/2364-0-0x0000000002330000-0x0000000002331000-memory.dmp

memory/2364-1-0x0000000003DB0000-0x0000000004DB0000-memory.dmp

memory/2364-2-0x0000000003DB0000-0x0000000004DB0000-memory.dmp

memory/2364-4-0x0000000000400000-0x0000000000527000-memory.dmp

memory/2364-6-0x0000000002330000-0x0000000002331000-memory.dmp

C:\Windows \System32\7617241.exe

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

C:\Windows \System32\netutils.dll

MD5 fa7aa88417d0c48807144a1a48fe3fbc
SHA1 6f5ec990b12d4a6075050a94e0d68d03781fa46d
SHA256 2019dcd18ba7d5554a4a9da882740aa883941670af3de9396960081a0f8aa098
SHA512 99b2eb6f8e7d00a3803cba229149e5e0cb67a3deb607782c55fbacd25d9c074cce83759de15490eff939d5ad98f26cdbd44395cc79ffe22753e16c3d9e3b5fff

memory/648-18-0x00000000613C0000-0x00000000613E3000-memory.dmp

C:\windows \system32\KDECO.bat

MD5 c545650595b479c81ad6b9d8882aae39
SHA1 7a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA256 a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
SHA512 85ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lhu1l52s.u1m.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/2840-30-0x00000294FBF70000-0x00000294FBF92000-memory.dmp

memory/2840-31-0x00007FFDB4C30000-0x00007FFDB56F1000-memory.dmp

memory/2840-32-0x00000294E2E60000-0x00000294E2E70000-memory.dmp

memory/2840-33-0x00000294E2E60000-0x00000294E2E70000-memory.dmp

memory/2840-36-0x00007FFDB4C30000-0x00007FFDB56F1000-memory.dmp

memory/2508-43-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-45-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-46-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-47-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-48-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-49-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-51-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-52-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-53-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-55-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-56-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-58-0x0000000000F20000-0x0000000001F20000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 f3408bfeb042b343724de2831a730979
SHA1 a32b4477686b243ae0b19f5b7c370bc986139be2
SHA256 d5aab3434142b4f7e448f2126cc8ef28fa35f15aa65e21275e54a04177211375
SHA512 b6f73671c27a8d9f949748b69e1db54a1e5d0a3bc2ff93cb6b2f686eb706220a6d5ebc53c8a21288b10e7bcd196f03a4dc232ec99158422b1cb127865866c1b3

memory/2508-65-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-66-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-73-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-74-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-80-0x0000000000F20000-0x0000000001F20000-memory.dmp

memory/2508-82-0x0000000000F20000-0x0000000001F20000-memory.dmp