agenttesla | 7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	server.exe

Windows security bypass 2 TTPs 1 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	server.exe

XpertRAT
XpertRAT is a remote access trojan with various capabilities.
rat xpertrat

XpertRAT Core Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1004-80-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat
behavioral1/memory/1004-81-0x0000000000401364-mapping.dmp	xpertrat
behavioral1/memory/1004-91-0x0000000000400000-0x0000000000443000-memory.dmp	xpertrat

M00nD3v Logger Payload 3 IoCs

Detects M00nD3v Logger payload in memory.

infostealer

resource	yara_rule
behavioral1/files/0x000a000000003c9f-64.dat	m00nd3v_logger
behavioral1/files/0x000a000000003c9f-66.dat	m00nd3v_logger
behavioral1/files/0x000a000000003c9f-67.dat	m00nd3v_logger

NirSoft WebBrowserPassView 5 IoCs

Password recovery tool for various web browsers

resource	yara_rule
behavioral1/memory/108-102-0x0000000000400000-0x000000000045B000-memory.dmp	WebBrowserPassView
behavioral1/memory/108-103-0x000000000044472E-mapping.dmp	WebBrowserPassView
behavioral1/memory/108-106-0x0000000000400000-0x000000000045B000-memory.dmp	WebBrowserPassView
behavioral1/memory/108-107-0x0000000000400000-0x000000000045B000-memory.dmp	WebBrowserPassView
behavioral1/memory/108-108-0x0000000000400000-0x000000000045B000-memory.dmp	WebBrowserPassView

Nirsoft 5 IoCs

resource	yara_rule
behavioral1/memory/108-102-0x0000000000400000-0x000000000045B000-memory.dmp	Nirsoft
behavioral1/memory/108-103-0x000000000044472E-mapping.dmp	Nirsoft
behavioral1/memory/108-106-0x0000000000400000-0x000000000045B000-memory.dmp	Nirsoft
behavioral1/memory/108-107-0x0000000000400000-0x000000000045B000-memory.dmp	Nirsoft
behavioral1/memory/108-108-0x0000000000400000-0x000000000045B000-memory.dmp	Nirsoft

Executes dropped EXE 3 IoCs

pid	Process
1616	za1.exe
1068	server.exe
1004	server.exe

Loads dropped DLL 9 IoCs

pid	Process
2016	RegAsm.exe
2016	RegAsm.exe
1068	server.exe
1068	server.exe
1068	server.exe
1068	server.exe
1004	server.exe
1004	server.exe
1004	server.exe

Obfuscated with Agile.Net obfuscator 1 IoCs

Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

agilenet

resource	yara_rule
behavioral1/memory/1688-57-0x0000000004C10000-0x0000000004CFE000-memory.dmp	agile_net

Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Windows security modification 2 TTPs 1 IoCs

Disabling Security Tools

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Security Center\UACDisableNotify = "0"	server.exe

Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\MyApp = "C:\\Users\\Admin\\AppData\\Roaming\\MyApp\\MyApp.exe"	RegAsm.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	server.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1688 set thread context of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1068 set thread context of 1004	1068	server.exe	32
PID 1616 set thread context of 108	1616	za1.exe	34

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
2016	RegAsm.exe
2016	RegAsm.exe
1068	server.exe
1068	server.exe
1068	server.exe
1068	server.exe
108	vbc.exe
108	vbc.exe
108	vbc.exe
108	vbc.exe
108	vbc.exe
108	vbc.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe

Suspicious behavior: SetClipboardViewer 1 IoCs

pid	Process
2016	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2016	RegAsm.exe
Token: SeDebugPrivilege	1004	server.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1068	server.exe
1004	server.exe
2016	RegAsm.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 1688 wrote to memory of 2016	1688	7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe	28
PID 2016 wrote to memory of 1616	2016	RegAsm.exe	30
PID 2016 wrote to memory of 1616	2016	RegAsm.exe	30
PID 2016 wrote to memory of 1616	2016	RegAsm.exe	30
PID 2016 wrote to memory of 1616	2016	RegAsm.exe	30
PID 2016 wrote to memory of 1068	2016	RegAsm.exe	31
PID 2016 wrote to memory of 1068	2016	RegAsm.exe	31
PID 2016 wrote to memory of 1068	2016	RegAsm.exe	31
PID 2016 wrote to memory of 1068	2016	RegAsm.exe	31
PID 2016 wrote to memory of 1068	2016	RegAsm.exe	31
PID 2016 wrote to memory of 1068	2016	RegAsm.exe	31
PID 2016 wrote to memory of 1068	2016	RegAsm.exe	31
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1068 wrote to memory of 1004	1068	server.exe	32
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34
PID 1616 wrote to memory of 108	1616	za1.exe	34

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	server.exe

outlook_office_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe
"C:\Users\Admin\AppData\Local\Temp\7cfd8176a561d17895afb532af1b04ebcba28aed056ce03a46a22bb069954c3b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Loads dropped DLL
  - Accesses Microsoft Outlook profiles
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: SetClipboardViewer
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:2016
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\za1.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\za1.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of WriteProcessMemory
    PID:1616
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
      "C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe" /stext "C:\Users\Admin\AppData\Local\Temp\tmp5F.tmp"
      4⤵
      Suspicious behavior: EnumeratesProcesses
      PID:108
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\server.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\server.exe"
    3⤵
    - UAC bypass
    - Windows security bypass
    - Executes dropped EXE
    - Loads dropped DLL
    - Windows security modification
    - Checks whether UAC is enabled
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    - System policy modification
    PID:1068
  - - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\server.exe
      C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\server.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:1004

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Bypass User Account Control

T1088

Defense Evasion

Bypass User Account Control

T1088

Disabling Security Tools

Modify Registry