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Analysis
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max time kernel
118s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
05/09/2024, 13:57
Static task
static1
Behavioral task
behavioral1
Sample
05092024_1357_05092024_PI_230524.rtf
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
05092024_1357_05092024_PI_230524.rtf
Resource
win10v2004-20240802-en
General
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Target
05092024_1357_05092024_PI_230524.rtf
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Size
675KB
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MD5
e95d774d12e3ffc8cebcbf895e174f7f
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SHA1
1bb43bc659153b1486c81441cb6b852fea2f73f5
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SHA256
6f9c338998bd331f4d59661d3a68c80f21934e35332996d8a194c61552e5da45
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SHA512
b4e2d2bf428d7a6e922f6b8990378071903f899fa9cc554b7daab338d57c021397d016a38a469d7f59dce26e764af514849876e454bef9d50fe8b6292c6ceb97
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SSDEEP
6144:FwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAR:v
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
smtp.yandex.com - Port:
587 - Username:
[email protected] - Password:
aowapnzgtwgqowgt - Email To:
[email protected]
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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Credentials from Password Stores: Credentials from Web Browsers 1 TTPs
Malicious Access or copy of Web Browser Credential store.
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Blocklisted process makes network request 1 IoCs
flow pid Process 4 1808 EQNEDT32.EXE -
Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 1832 powershell.exe -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
pid Process 2748 yevmplug86820.exe 2960 yevmplug86820.exe -
Loads dropped DLL 1 IoCs
pid Process 1808 EQNEDT32.EXE -
Reads data files stored by FTP clients 2 TTPs
Tries to access configuration files associated with programs like FileZilla.
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Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
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Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk powershell.exe -
Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 2748 set thread context of 2960 2748 yevmplug86820.exe 38 -
Drops file in Windows directory 1 IoCs
description ioc Process File opened for modification C:\Windows\Debug\WIA\wiatrace.log WINWORD.EXE -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language yevmplug86820.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language WINWORD.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language EQNEDT32.EXE Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language yevmplug86820.exe -
Office loads VBA resources, possible macro or embedded object present
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Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
pid Process 1808 EQNEDT32.EXE -
Suspicious behavior: AddClipboardFormatListener 1 IoCs
pid Process 1736 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 5 IoCs
pid Process 2960 yevmplug86820.exe 2960 yevmplug86820.exe 2960 yevmplug86820.exe 2960 yevmplug86820.exe 1832 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeDebugPrivilege 2960 yevmplug86820.exe Token: SeDebugPrivilege 1832 powershell.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1736 WINWORD.EXE 1736 WINWORD.EXE -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1808 wrote to memory of 2748 1808 EQNEDT32.EXE 32 PID 1808 wrote to memory of 2748 1808 EQNEDT32.EXE 32 PID 1808 wrote to memory of 2748 1808 EQNEDT32.EXE 32 PID 1808 wrote to memory of 2748 1808 EQNEDT32.EXE 32 PID 1736 wrote to memory of 2892 1736 WINWORD.EXE 35 PID 1736 wrote to memory of 2892 1736 WINWORD.EXE 35 PID 1736 wrote to memory of 2892 1736 WINWORD.EXE 35 PID 1736 wrote to memory of 2892 1736 WINWORD.EXE 35 PID 2748 wrote to memory of 1832 2748 yevmplug86820.exe 36 PID 2748 wrote to memory of 1832 2748 yevmplug86820.exe 36 PID 2748 wrote to memory of 1832 2748 yevmplug86820.exe 36 PID 2748 wrote to memory of 1832 2748 yevmplug86820.exe 36 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38 PID 2748 wrote to memory of 2960 2748 yevmplug86820.exe 38
Processes
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C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\05092024_1357_05092024_PI_230524.rtf"1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1736 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:2892
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C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1808 -
C:\Users\Admin\AppData\Roaming\yevmplug86820.exe"C:\Users\Admin\AppData\Roaming\yevmplug86820.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2748 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\yevmplug86820.exe"3⤵
- Command and Scripting Interpreter: PowerShell
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1832
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C:\Users\Admin\AppData\Roaming\yevmplug86820.exe"C:\Users\Admin\AppData\Roaming\yevmplug86820.exe"3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2960
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Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Exploitation for Client Execution
1Credential Access
Credentials from Password Stores
1Credentials from Web Browsers
1Unsecured Credentials
4Credentials In Files
3Credentials in Registry
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
19KB
MD5395552569be77adcde776e11bf2c43bc
SHA178f3ce09bc99a102a1e3d9a7d216b1f48f964e98
SHA256fcbe55cd1e4184c80a87e8cd5a4d5fb093bfe1f7c74b9afeb0f22efe2e70bb87
SHA5120dfa732b9c67206a7fe8a2910ab5a84910754f8ba80ceafb1a932a3a98bc745e64fcb358162def355b62cb2a45d30213a3449800c28a94ccd9cf4c99142f2a66
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Filesize
746KB
MD569da125c06780ec4ad9417e884ff94ff
SHA1e85221ba52679d3bcf853cf30139b28ec1c83310
SHA256185f917832ca4dd37d1275969de107ffd07f055f01041e321a980d96c646dff8
SHA5122086d891d681208e28a0225335e610b9ff2c9117fde3d6627ae6d7170879c7a4103d12cc3ef56a94f3bf65f9c76d9359d8d2123d7392a999fc726f8496f7fddc