Malware Analysis Report

2024-08-06 14:38

Sample ID 240523-w1gmyabg37
Target S28BW-420120416270,pdf.exe
SHA256 a311c064a48b99a8a79e047656e610e95234c57830be981c08b8164bb3b18d24
Tags
modiloader persistence spyware stealer trojan
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

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

a311c064a48b99a8a79e047656e610e95234c57830be981c08b8164bb3b18d24

Threat Level: Known bad

The file S28BW-420120416270,pdf.exe was found to be: Known bad.

Malicious Activity Summary

modiloader persistence spyware stealer trojan

ModiLoader, DBatLoader

ModiLoader Second Stage

Reads data files stored by FTP clients

Reads user/profile data of local email clients

Reads user/profile data of web browsers

Reads WinSCP keys stored on the system

Executes dropped EXE

Adds Run key to start application

Suspicious use of SetThreadContext

Program crash

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Script User-Agent

Suspicious use of AdjustPrivilegeToken

Suspicious use of WriteProcessMemory

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Privilege Escalation
TA0004
Boot or Logon Autostart Execution
T1547
Registry Run Keys / Startup Folder
T1547.001
Defense Evasion
TA0005
Modify Registry
T1112
Credential Access
TA0006
Unsecured Credentials
T1552
Credentials In Files
T1552.001
Credentials in Registry
T1552.002
Discovery
TA0007
Lateral Movement
TA0008
Collection
TA0009
Data from Local System
T1005
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-05-23 18:23

Signatures

Unsigned PE

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

Analysis: behavioral1

Detonation Overview

Submitted

2024-05-23 18:23

Reported

2024-05-23 18:25

Platform

win7-20240508-en

Max time kernel

140s

Max time network

120s

Command Line

"C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe"

Signatures

Program crash

Description Indicator Process Target
N/A N/A C:\Windows\SysWOW64\WerFault.exe C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1360 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Windows\SysWOW64\WerFault.exe
PID 1360 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Windows\SysWOW64\WerFault.exe
PID 1360 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Windows\SysWOW64\WerFault.exe
PID 1360 wrote to memory of 2144 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Windows\SysWOW64\WerFault.exe

Processes

C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe

"C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe"

C:\Windows\SysWOW64\WerFault.exe

C:\Windows\SysWOW64\WerFault.exe -u -p 1360 -s 688

Network

Country Destination Domain Proto
US 8.8.8.8:53 onedrive.live.com udp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp

Files

memory/1360-0-0x0000000000220000-0x0000000000221000-memory.dmp

memory/1360-1-0x0000000000220000-0x0000000000221000-memory.dmp

memory/1360-2-0x0000000000400000-0x0000000000578000-memory.dmp

Analysis: behavioral2

Detonation Overview

Submitted

2024-05-23 18:23

Reported

2024-05-23 18:25

Platform

win10v2004-20240426-en

Max time kernel

144s

Max time network

122s

Command Line

"C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe"

Signatures

ModiLoader, DBatLoader

trojan modiloader

ModiLoader Second Stage

Description Indicator Process Target
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:\Users\Public\Libraries\drohzvuH.pif N/A

Reads WinSCP keys stored on the system

spyware stealer

Reads data files stored by FTP clients

spyware stealer

Reads user/profile data of local email clients

spyware stealer

Reads user/profile data of web browsers

spyware stealer

Adds Run key to start application

persistence
Description Indicator Process Target
Set value (str) \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Huvzhord = "C:\\Users\\Public\\Huvzhord.url" C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe N/A

Suspicious use of SetThreadContext

Description Indicator Process Target
PID 1944 set thread context of 2128 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Users\Public\Libraries\drohzvuH.pif

Script User-Agent

Description Indicator Process Target
HTTP User-Agent header Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) N/A N/A
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:\Users\Public\Libraries\drohzvuH.pif N/A
N/A N/A C:\Users\Public\Libraries\drohzvuH.pif N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Public\Libraries\drohzvuH.pif N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 1944 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Windows\SysWOW64\extrac32.exe
PID 1944 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Windows\SysWOW64\extrac32.exe
PID 1944 wrote to memory of 4920 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Windows\SysWOW64\extrac32.exe
PID 1944 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Users\Public\Libraries\drohzvuH.pif
PID 1944 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Users\Public\Libraries\drohzvuH.pif
PID 1944 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Users\Public\Libraries\drohzvuH.pif
PID 1944 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Users\Public\Libraries\drohzvuH.pif
PID 1944 wrote to memory of 2128 N/A C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\Users\Public\Libraries\drohzvuH.pif

Processes

C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe

"C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe"

C:\Windows\SysWOW64\extrac32.exe

C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\S28BW-420120416270,pdf.exe C:\\Users\\Public\\Libraries\\Huvzhord.PIF

C:\Users\Public\Libraries\drohzvuH.pif

C:\Users\Public\Libraries\drohzvuH.pif

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
US 8.8.8.8:53 28.118.140.52.in-addr.arpa udp
BE 88.221.83.226:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 95.221.229.192.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 226.83.221.88.in-addr.arpa udp
BE 88.221.83.226:443 www.bing.com tcp
US 8.8.8.8:53 4.159.190.20.in-addr.arpa udp
US 8.8.8.8:53 onedrive.live.com udp
US 13.107.137.11:443 onedrive.live.com tcp
US 13.107.137.11:443 onedrive.live.com tcp
US 8.8.8.8:53 7pcorq.db.files.1drv.com udp
US 13.107.42.12:443 7pcorq.db.files.1drv.com tcp
US 8.8.8.8:53 11.137.107.13.in-addr.arpa udp
US 8.8.8.8:53 12.42.107.13.in-addr.arpa udp
US 8.8.8.8:53 13.86.106.20.in-addr.arpa udp
US 8.8.8.8:53 149.220.183.52.in-addr.arpa udp
US 8.8.8.8:53 api.telegram.org udp
NL 149.154.167.220:443 api.telegram.org tcp
US 8.8.8.8:53 220.167.154.149.in-addr.arpa udp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 198.187.3.20.in-addr.arpa udp
US 8.8.8.8:53 203.107.17.2.in-addr.arpa udp
US 8.8.8.8:53 99.58.20.217.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 8.8.8.8:53 200.197.79.204.in-addr.arpa udp

Files

memory/1944-0-0x0000000000B70000-0x0000000000B71000-memory.dmp

memory/1944-1-0x0000000000400000-0x0000000000578000-memory.dmp

C:\Users\Public\Libraries\drohzvuH.pif

MD5 c116d3604ceafe7057d77ff27552c215
SHA1 452b14432fb5758b46f2897aeccd89f7c82a727d
SHA256 7bcdc2e607abc65ef93afd009c3048970d9e8d1c2a18fc571562396b13ebb301
SHA512 9202a00eeaf4c5be94de32fd41bfea40fc32d368955d49b7bad2b5c23c4ebc92dccb37d99f5a14e53ad674b63f1baa6efb1feb27225c86693ead3262a26d66c6

memory/2128-9-0x0000000000400000-0x0000000001400000-memory.dmp

memory/2128-12-0x0000000000400000-0x0000000001400000-memory.dmp

memory/2128-14-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

memory/2128-15-0x000000004C1C0000-0x000000004C21E000-memory.dmp

memory/2128-18-0x000000004C890000-0x000000004C8EC000-memory.dmp

memory/2128-17-0x000000004C2E0000-0x000000004C884000-memory.dmp

memory/2128-16-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/2128-20-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/2128-19-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/2128-72-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-80-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-78-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-76-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-74-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-70-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-68-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-66-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-64-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-63-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-60-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-58-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-56-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-54-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-52-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-50-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-48-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-44-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-43-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-40-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-38-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-36-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-34-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-32-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-30-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-28-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-26-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-24-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-22-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-21-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-46-0x000000004C890000-0x000000004C8E6000-memory.dmp

memory/2128-1159-0x000000004CA00000-0x000000004CA66000-memory.dmp

memory/2128-1160-0x0000000074C40000-0x00000000753F0000-memory.dmp

memory/2128-1161-0x000000004D2C0000-0x000000004D310000-memory.dmp

memory/2128-1162-0x000000004D310000-0x000000004D3AC000-memory.dmp

memory/2128-1163-0x000000004DC70000-0x000000004DD02000-memory.dmp

memory/2128-1164-0x000000004DE90000-0x000000004DE9A000-memory.dmp

memory/2128-1166-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

memory/2128-1167-0x0000000074C40000-0x00000000753F0000-memory.dmp