Malware Analysis Report

2024-12-07 22:28

Sample ID 240406-rmr5ascb7y
Target FACT09865456000900[1].exe
SHA256 ae39d4665f3d31c1fe4f380c446519d4bb25314267c9c2a61605d2313a76d5b7
Tags
modiloader trojan remcos remotehost collection 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

ae39d4665f3d31c1fe4f380c446519d4bb25314267c9c2a61605d2313a76d5b7

Threat Level: Known bad

The file FACT09865456000900[1].exe was found to be: Known bad.

Malicious Activity Summary

modiloader trojan remcos remotehost collection persistence rat

ModiLoader, DBatLoader

Remcos

Nirsoft

ModiLoader Second Stage

NirSoft WebBrowserPassView

NirSoft MailPassView

Accesses Microsoft Outlook accounts

Adds Run key to start application

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Script User-Agent

Suspicious use of SendNotifyMessage

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of WriteProcessMemory

Suspicious use of FindShellTrayWindow

MITRE ATT&CK

Analysis: static1

Detonation Overview

Reported

2024-04-06 14:18

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-04-06 14:18

Reported

2024-04-06 14:21

Platform

win7-20240221-en

Max time kernel

130s

Max time network

139s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].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\FACT09865456000900[1].exe

"C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 340 -s 716

Network

Country Destination Domain Proto
US 8.8.8.8:53 baitalasma.com udp
DE 38.242.255.115:443 baitalasma.com tcp
DE 38.242.255.115:443 baitalasma.com tcp
DE 38.242.255.115:443 baitalasma.com tcp

Files

memory/340-0-0x0000000000300000-0x0000000000301000-memory.dmp

memory/340-1-0x0000000002EF0000-0x0000000003EF0000-memory.dmp

memory/340-2-0x0000000002EF0000-0x0000000003EF0000-memory.dmp

memory/340-4-0x0000000000300000-0x0000000000301000-memory.dmp

memory/340-5-0x0000000000400000-0x00000000004E2000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-04-06 14:18

Reported

2024-04-06 14:21

Platform

win10v2004-20240226-en

Max time kernel

147s

Max time network

155s

Command Line

"C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].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

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

Accesses Microsoft Outlook accounts

collection
Description Indicator Process Target
Key opened \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts C:\Windows\SysWOW64\SndVol.exe N/A

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Gpzfmkfb = "C:\\Users\\Public\\Gpzfmkfb.url" C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1296 set thread context of 3940 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 set thread context of 1124 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 set thread context of 3244 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe

Program crash

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

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: MapViewOfSection

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

Suspicious use of AdjustPrivilegeToken

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

Suspicious use of FindShellTrayWindow

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

Suspicious use of SendNotifyMessage

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

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 832 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\Windows\SysWOW64\extrac32.exe
PID 832 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\Windows\SysWOW64\extrac32.exe
PID 832 wrote to memory of 3156 N/A C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\Windows\SysWOW64\extrac32.exe
PID 832 wrote to memory of 1296 N/A C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\Windows\SysWOW64\SndVol.exe
PID 832 wrote to memory of 1296 N/A C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\Windows\SysWOW64\SndVol.exe
PID 832 wrote to memory of 1296 N/A C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\Windows\SysWOW64\SndVol.exe
PID 832 wrote to memory of 1296 N/A C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 2836 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 2836 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 2836 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3940 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3940 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3940 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3940 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 1124 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 1124 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 1124 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 1124 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3244 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3244 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3244 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe
PID 1296 wrote to memory of 3244 N/A C:\Windows\SysWOW64\SndVol.exe C:\Windows\SysWOW64\SndVol.exe

Processes

C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe

"C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe"

C:\Windows\SysWOW64\extrac32.exe

C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\FACT09865456000900[1].exe C:\\Users\\Public\\Libraries\\Gpzfmkfb.PIF

C:\Windows\SysWOW64\SndVol.exe

C:\Windows\System32\SndVol.exe

C:\Windows\SysWOW64\SndVol.exe

C:\Windows\SysWOW64\SndVol.exe /stext "C:\Users\Admin\AppData\Local\Temp\azxydzmmqaepqjjehgcgupxb"

C:\Windows\SysWOW64\SndVol.exe

C:\Windows\SysWOW64\SndVol.exe /stext "C:\Users\Admin\AppData\Local\Temp\azxydzmmqaepqjjehgcgupxb"

C:\Windows\SysWOW64\SndVol.exe

C:\Windows\SysWOW64\SndVol.exe /stext "C:\Users\Admin\AppData\Local\Temp\cbcjejwgmiwusxfiyrxzfcssxvuo"

C:\Windows\SysWOW64\SndVol.exe

C:\Windows\SysWOW64\SndVol.exe /stext "C:\Users\Admin\AppData\Local\Temp\nvqbfchiaqohddtmibkbqhebgbmxzyf"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1296 -ip 1296

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1296 -s 1772

Network

Country Destination Domain Proto
US 8.8.8.8:53 217.106.137.52.in-addr.arpa udp
US 8.8.8.8:53 249.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 67.31.126.40.in-addr.arpa udp
US 8.8.8.8:53 133.211.185.52.in-addr.arpa udp
US 8.8.8.8:53 baitalasma.com udp
DE 38.242.255.115:443 baitalasma.com tcp
DE 38.242.255.115:443 baitalasma.com tcp
US 8.8.8.8:53 115.255.242.38.in-addr.arpa udp
US 107.175.229.139:8087 tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
US 107.175.229.139:8087 tcp
US 8.8.8.8:53 geoplugin.net udp
NL 178.237.33.50:80 geoplugin.net tcp
US 8.8.8.8:53 139.229.175.107.in-addr.arpa udp
US 8.8.8.8:53 241.150.49.20.in-addr.arpa udp
US 8.8.8.8:53 50.33.237.178.in-addr.arpa udp
US 8.8.8.8:53 26.165.165.52.in-addr.arpa udp
US 8.8.8.8:53 56.126.166.20.in-addr.arpa udp
US 8.8.8.8:53 28.143.109.104.in-addr.arpa udp
US 8.8.8.8:53 240.221.184.93.in-addr.arpa udp
US 8.8.8.8:53 66.112.168.52.in-addr.arpa udp

Files

memory/832-0-0x00000000005F0000-0x00000000005F1000-memory.dmp

memory/832-1-0x00000000029E0000-0x00000000039E0000-memory.dmp

memory/832-2-0x00000000029E0000-0x00000000039E0000-memory.dmp

memory/832-4-0x0000000000400000-0x00000000004E2000-memory.dmp

memory/1296-9-0x0000000002BF0000-0x0000000003BF0000-memory.dmp

memory/1296-12-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-14-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-16-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-17-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-18-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-19-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-21-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-20-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-23-0x0000000000400000-0x0000000000482000-memory.dmp

memory/3940-24-0x0000000000400000-0x0000000000478000-memory.dmp

memory/1124-26-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3940-28-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3244-29-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1124-31-0x0000000000400000-0x0000000000462000-memory.dmp

memory/1124-34-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3940-33-0x0000000000400000-0x0000000000478000-memory.dmp

memory/3244-37-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3244-35-0x0000000000400000-0x0000000000424000-memory.dmp

memory/1124-38-0x0000000000400000-0x0000000000462000-memory.dmp

memory/3244-42-0x0000000000400000-0x0000000000424000-memory.dmp

memory/3940-44-0x0000000000400000-0x0000000000478000-memory.dmp

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

MD5 fc8ceff5210efa58594c67ed8f49a824
SHA1 dba98c98becbdf81f623cdca6cd0a993022fe6cd
SHA256 778b7d5b90428961459c82e9881fe0fece78424d6301eb0720a96f100511f599
SHA512 c3b24fe5f5ba39174528ffc05544da6f22ac6aef2cac923ad139c0d044989873e004f9f5018cc0cc6847b5878f5aee96d6de823c860ac54a0fc67ff8d2d89cd1

memory/1296-46-0x0000000016570000-0x0000000016589000-memory.dmp

memory/1296-49-0x0000000016570000-0x0000000016589000-memory.dmp

memory/1296-51-0x0000000000400000-0x0000000000482000-memory.dmp

memory/1296-55-0x0000000002BF0000-0x0000000003BF0000-memory.dmp

memory/1296-56-0x0000000016570000-0x0000000016589000-memory.dmp