Malware Analysis Report

2025-01-02 03:17

Sample ID 240328-caqndacg6s
Target 7f9d54f2643b695c21d8fb560e72106a.bin
SHA256 d9c12e08efb953acf51fb574b233bcf1fd0a58061cb71f32bc198e986d10ef15
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

d9c12e08efb953acf51fb574b233bcf1fd0a58061cb71f32bc198e986d10ef15

Threat Level: Known bad

The file 7f9d54f2643b695c21d8fb560e72106a.bin was found to be: Known bad.

Malicious Activity Summary

modiloader trojan remcos remotehost persistence rat

ModiLoader, DBatLoader

Remcos

ModiLoader Second Stage

Executes dropped EXE

Loads dropped DLL

Adds Run key to start application

Unsigned PE

Program crash

Suspicious use of AdjustPrivilegeToken

Script User-Agent

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Suspicious use of WriteProcessMemory

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-03-28 01:52

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-03-28 01:52

Reported

2024-03-28 01:55

Platform

win7-20240215-en

Max time kernel

140s

Max time network

123s

Command Line

"C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe"

Signatures

Processes

C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe

"C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1724 -s 796

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/1724-0-0x0000000000230000-0x0000000000231000-memory.dmp

memory/1724-1-0x0000000003090000-0x0000000004090000-memory.dmp

memory/1724-2-0x0000000003090000-0x0000000004090000-memory.dmp

memory/1724-4-0x0000000000230000-0x0000000000231000-memory.dmp

memory/1724-5-0x0000000000400000-0x0000000000527000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-03-28 01:52

Reported

2024-03-28 01:55

Platform

win10v2004-20240226-en

Max time kernel

149s

Max time network

148s

Command Line

"C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.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\8472304.exe N/A

Loads dropped DLL

Description Indicator Process Target
N/A N/A C:\Windows \System32\8472304.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Qbijgrcm = "C:\\Users\\Public\\Qbijgrcm.url" C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.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:\Windows\SysWOW64\colorcpl.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 636 wrote to memory of 4088 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 4088 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 4088 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 3568 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 3568 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 3568 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 4868 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 4868 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 636 wrote to memory of 4868 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\cmd.exe
PID 4868 wrote to memory of 5024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\8472304.exe
PID 4868 wrote to memory of 5024 N/A C:\Windows\SysWOW64\cmd.exe C:\Windows \System32\8472304.exe
PID 5024 wrote to memory of 4948 N/A C:\Windows \System32\8472304.exe C:\Windows\system32\cmd.exe
PID 5024 wrote to memory of 4948 N/A C:\Windows \System32\8472304.exe C:\Windows\system32\cmd.exe
PID 4948 wrote to memory of 4280 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 4948 wrote to memory of 4280 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\cmd.exe
PID 4280 wrote to memory of 5032 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 4280 wrote to memory of 5032 N/A C:\Windows\system32\cmd.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
PID 636 wrote to memory of 1892 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\extrac32.exe
PID 636 wrote to memory of 1892 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\extrac32.exe
PID 636 wrote to memory of 1892 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\extrac32.exe
PID 636 wrote to memory of 1488 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\colorcpl.exe
PID 636 wrote to memory of 1488 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\colorcpl.exe
PID 636 wrote to memory of 1488 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\colorcpl.exe
PID 636 wrote to memory of 1488 N/A C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\Windows\SysWOW64\colorcpl.exe

Processes

C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe

"C:\Users\Admin\AppData\Local\Temp\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.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\8472304.exe"

C:\Windows \System32\8472304.exe

"C:\Windows \System32\8472304.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\373859f19da9662cebadea97fe4acf12e811b72acb5490d80c7f0d8ff45353a3.exe C:\\Users\\Public\\Libraries\\Qbijgrcm.PIF

C:\Windows\SysWOW64\colorcpl.exe

C:\Windows\System32\colorcpl.exe

Network

Country Destination Domain Proto
US 8.8.8.8:53 232.168.11.51.in-addr.arpa udp
US 8.8.8.8:53 130.211.222.173.in-addr.arpa udp
US 8.8.8.8:53 73.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 28.118.140.52.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
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 29.235.95.23.in-addr.arpa udp
US 8.8.8.8:53 geoplugin.net 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 8.8.8.8:53 183.59.114.20.in-addr.arpa udp
US 8.8.8.8:53 171.39.242.20.in-addr.arpa udp
US 8.8.8.8:53 217.135.221.88.in-addr.arpa udp
US 8.8.8.8:53 81.171.91.138.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 43.229.111.52.in-addr.arpa udp

Files

memory/636-0-0x0000000002320000-0x0000000002321000-memory.dmp

memory/636-1-0x0000000003F80000-0x0000000004F80000-memory.dmp

memory/636-2-0x0000000003F80000-0x0000000004F80000-memory.dmp

memory/636-4-0x0000000000400000-0x0000000000527000-memory.dmp

C:\Windows \System32\8472304.exe

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

C:\Windows \System32\netutils.dll

MD5 fa7aa88417d0c48807144a1a48fe3fbc
SHA1 6f5ec990b12d4a6075050a94e0d68d03781fa46d
SHA256 2019dcd18ba7d5554a4a9da882740aa883941670af3de9396960081a0f8aa098
SHA512 99b2eb6f8e7d00a3803cba229149e5e0cb67a3deb607782c55fbacd25d9c074cce83759de15490eff939d5ad98f26cdbd44395cc79ffe22753e16c3d9e3b5fff

memory/5024-15-0x00000000613C0000-0x00000000613E3000-memory.dmp

C:\windows \system32\KDECO.bat

MD5 c545650595b479c81ad6b9d8882aae39
SHA1 7a98aa2e6eee23b3c1bba876955d525bc618b3f0
SHA256 a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9
SHA512 85ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3

memory/5032-22-0x000001F73FB50000-0x000001F73FB72000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ouomdpnq.ar2.ps1

MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

memory/5032-27-0x00007FF99BAD0000-0x00007FF99C591000-memory.dmp

memory/5032-28-0x000001F73DA30000-0x000001F73DA40000-memory.dmp

memory/5032-29-0x000001F73DA30000-0x000001F73DA40000-memory.dmp

memory/5032-32-0x00007FF99BAD0000-0x00007FF99C591000-memory.dmp

memory/1488-40-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-42-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-43-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-44-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-45-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-46-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-47-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-48-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-49-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-54-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-55-0x0000000000E80000-0x0000000001E80000-memory.dmp

C:\ProgramData\remcos\logs.dat

MD5 a19012ab284e87fb085e896d9944d1f2
SHA1 6f4a7d315d18ac860c34bfe12e89858180e82053
SHA256 8ded50971dd19b6e09dc08f0a9c36a0aa34d983ef80eefe12860a44fde64328e
SHA512 4dbc77990885eb64477ade0025ba4a52034b1c071825a991217725cb03e4c236f42145f5b15bf57fcac052c2b8d6025d1fea188fb5707264be36823f915ba276

memory/1488-62-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-63-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-70-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-71-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-78-0x0000000000E80000-0x0000000001E80000-memory.dmp

memory/1488-79-0x0000000000E80000-0x0000000001E80000-memory.dmp