Malware Analysis Report

2024-12-07 22:30

Sample ID 240405-cdbnmahh46
Target eac95a52ac634d3ea75387201a2c749c.bin
SHA256 e53f9093901d793921b102b1cae2d87b2cf71c70e6995d2baabdb17190d33266
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

e53f9093901d793921b102b1cae2d87b2cf71c70e6995d2baabdb17190d33266

Threat Level: Known bad

The file eac95a52ac634d3ea75387201a2c749c.bin was found to be: Known bad.

Malicious Activity Summary

modiloader trojan remcos remotehost persistence rat

Remcos

ModiLoader, DBatLoader

ModiLoader Second Stage

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Unsigned PE

Program crash

Suspicious use of SetWindowsHookEx

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Script User-Agent

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-05 01:57

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-05 01:57

Reported

2024-04-05 02:00

Platform

win7-20240221-en

Max time kernel

131s

Max time network

147s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe

"C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 712

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/2156-0-0x0000000000220000-0x0000000000221000-memory.dmp

memory/2156-1-0x0000000002E50000-0x0000000003E50000-memory.dmp

memory/2156-2-0x0000000002E50000-0x0000000003E50000-memory.dmp

memory/2156-4-0x0000000000220000-0x0000000000221000-memory.dmp

memory/2156-5-0x0000000000400000-0x00000000005AF000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-05 01:57

Reported

2024-04-05 01:59

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.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\1416128.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows \System32\1416128.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Dkesuvii = "C:\\Users\\Public\\Dkesuvii.url" C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.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 behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe N/A
N/A N/A C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe 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:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 4500 wrote to memory of 4528 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 4528 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 4528 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 868 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 3492 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 3492 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 4500 wrote to memory of 3492 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\cmd.exe
PID 3492 wrote to memory of 3368 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\1416128.exe
PID 3492 wrote to memory of 3368 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\1416128.exe
PID 3368 wrote to memory of 4896 N/A C:\Windows \System32\1416128.exe C:\Windows\system32\cmd.exe
PID 3368 wrote to memory of 4896 N/A C:\Windows \System32\1416128.exe C:\Windows\system32\cmd.exe
PID 4896 wrote to memory of 1936 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 4896 wrote to memory of 1936 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 1936 wrote to memory of 3564 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 1936 wrote to memory of 3564 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4500 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\extrac32.exe
PID 4500 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\extrac32.exe
PID 4500 wrote to memory of 4856 N/A C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\Windows\SysWOW64\extrac32.exe

Processes

C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe

"C:\Users\Admin\AppData\Local\Temp\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.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\1416128.exe"

C:\Windows \System32\1416128.exe

"C:\Windows \System32\1416128.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\f7f1798e3d66880f2cb35f6764a1c32902abb3ce7ceafe0bc049496ca9161e63.exe C:\\Users\\Public\\Libraries\\Dkesuvii.PIF

Network

Country Destination Domain Proto
US 8.8.8.8:53 178.223.142.52.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 218.110.86.104.in-addr.arpa udp
US 8.8.8.8:53 133.32.126.40.in-addr.arpa udp
US 8.8.8.8:53 58.55.71.13.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 28.118.140.52.in-addr.arpa udp
US 8.8.8.8:53 18.97.240.192.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 192.3.101.8:45671 tcp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
N/A 127.0.0.1:45671 tcp
US 8.8.8.8:53 15.164.165.52.in-addr.arpa udp
N/A 127.0.0.1:55677 tcp
US 8.8.8.8:53 9.66.18.2.in-addr.arpa udp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
US 8.8.8.8:53 234.110.86.104.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 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 8.8.8.8:53 232.110.86.104.in-addr.arpa udp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
N/A 127.0.0.1:45671 tcp
N/A 127.0.0.1:55677 tcp
US 192.3.101.8:55677 tcp
US 192.3.101.8:45671 tcp
US 8.8.8.8:53 90.16.208.104.in-addr.arpa udp

Files

memory/4500-0-0x0000000000A60000-0x0000000000A61000-memory.dmp

memory/4500-1-0x0000000002AD0000-0x0000000003AD0000-memory.dmp

memory/4500-2-0x0000000002AD0000-0x0000000003AD0000-memory.dmp

memory/4500-4-0x0000000000400000-0x00000000005AF000-memory.dmp

C:\Windows \System32\1416128.exe

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

C:\Windows \System32\netutils.dll

MD5 8541304aadba4ae8620bb2699f6e0437
SHA1 e0b28a6ecd32d3789433217364c1006de9892df8
SHA256 50573c81e5773c13a5411e8446d7fb17956865675782239818f7affd40a2fecb
SHA512 c18b1233c138229705242e1cdc00970e45e414d8da9c643b1196ec9de261ae18076e22bed6fcc48c07d1f0e851469db9147f083f3c3c76a26b75994419392455

memory/3368-15-0x00000000613C0000-0x00000000613E3000-memory.dmp

C:\windows \system32\KDECO.bat

MD5 c545650595b479c81ad6b9d8882aae39
SHA1 7a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA256 a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
SHA512 85ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0elscgiq.ulq.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/3564-22-0x000002041F0D0000-0x000002041F0F2000-memory.dmp

memory/3564-23-0x00007FFC5AF40000-0x00007FFC5BA01000-memory.dmp

memory/3564-28-0x000002041E810000-0x000002041E820000-memory.dmp

memory/3564-29-0x000002041E810000-0x000002041E820000-memory.dmp

memory/3564-32-0x00007FFC5AF40000-0x00007FFC5BA01000-memory.dmp

memory/4500-38-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-41-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-42-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-43-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-44-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-46-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-49-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-52-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-54-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-55-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-58-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-60-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-64-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-65-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-66-0x0000000015440000-0x0000000016440000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 f16d1905a33766b537daef7d741ba23f
SHA1 e6fef0673ca9d856990ee9f3e1d8841e73138aed
SHA256 c479f8851233bd9542da41a88c8eb9bb3e9b4544cf52031871548006eab1c932
SHA512 a63b3be5606bd53b343f25e05028bee79b25c2a5a10d295e5ad72e6602dd309bcbf19b976a9fb2428eaea2e23316509c6762bd148add5aa12ecc60a682f7f2c3

memory/4500-69-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-71-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-75-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-76-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-78-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-80-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-83-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-86-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-87-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-89-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-91-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-95-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-97-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-98-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-100-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-102-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-106-0x0000000015440000-0x0000000016440000-memory.dmp

memory/4500-108-0x0000000015440000-0x0000000016440000-memory.dmp