Analysis
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max time kernel
120s -
max time network
124s -
platform
windows7_x64 -
resource
win7-20240708-en -
resource tags
arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system -
submitted
23-10-2024 07:00
Static task
static1
Behavioral task
behavioral1
Sample
CLOSURE.rtf
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
CLOSURE.rtf
Resource
win10v2004-20241007-en
General
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Target
CLOSURE.rtf
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Size
740KB
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MD5
f26bb424ef01ec203239aa3a6856faca
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SHA1
43368a01d4d0842df97c91a2aa09975f0f90a3e9
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SHA256
f40201743250cd62b21ea6a53c9b5cac0cbe8e7eb36b4b899321a63e5ab589ac
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SHA512
fba9c8b8003e92a4d4c620f8d636bb11c47e55b5277d6fd796687b4e5aeaf761156c7e65024868399213c65bd2a5e8db5836716b58a6c8a05f6516f3f26262f4
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SSDEEP
6144:DwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwAYwA3wyM+3v2jBQK50iMKt6:p
Malware Config
Extracted
vipkeylogger
Protocol: smtp- Host:
mail.tonicables.top - Port:
587 - Username:
[email protected] - Password:
7213575aceACE@@ - Email To:
[email protected]
Signatures
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VIPKeylogger
VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.
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Blocklisted process makes network request 1 IoCs
Processes:
EQNEDT32.EXEflow pid process 4 2428 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.
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Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
Processes:
obiddjtr.exeobiddjtr.exepid process 2108 obiddjtr.exe 2008 obiddjtr.exe -
Loads dropped DLL 2 IoCs
Processes:
EQNEDT32.EXEpid process 2428 EQNEDT32.EXE 2428 EQNEDT32.EXE -
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 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
obiddjtr.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 obiddjtr.exe Key opened \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 obiddjtr.exe Key opened \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 obiddjtr.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 5 checkip.dyndns.org -
Drops file in System32 directory 1 IoCs
Processes:
powershell.exedescription 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
Processes:
obiddjtr.exedescription pid process target process PID 2108 set thread context of 2008 2108 obiddjtr.exe obiddjtr.exe -
Drops file in Windows directory 1 IoCs
Processes:
WINWORD.EXEdescription 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.
Processes:
WINWORD.EXEEQNEDT32.EXEobiddjtr.exeobiddjtr.exepowershell.exedescription ioc process 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 obiddjtr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language obiddjtr.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.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.
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Suspicious behavior: AddClipboardFormatListener 1 IoCs
Processes:
WINWORD.EXEpid process 2384 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
obiddjtr.exeobiddjtr.exepowershell.exepid process 2108 obiddjtr.exe 2108 obiddjtr.exe 2008 obiddjtr.exe 2364 powershell.exe 2008 obiddjtr.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
obiddjtr.exeobiddjtr.exepowershell.exedescription pid process Token: SeDebugPrivilege 2108 obiddjtr.exe Token: SeDebugPrivilege 2008 obiddjtr.exe Token: SeDebugPrivilege 2364 powershell.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
WINWORD.EXEpid process 2384 WINWORD.EXE 2384 WINWORD.EXE -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
EQNEDT32.EXEWINWORD.EXEobiddjtr.exedescription pid process target process PID 2428 wrote to memory of 2108 2428 EQNEDT32.EXE obiddjtr.exe PID 2428 wrote to memory of 2108 2428 EQNEDT32.EXE obiddjtr.exe PID 2428 wrote to memory of 2108 2428 EQNEDT32.EXE obiddjtr.exe PID 2428 wrote to memory of 2108 2428 EQNEDT32.EXE obiddjtr.exe PID 2384 wrote to memory of 2632 2384 WINWORD.EXE splwow64.exe PID 2384 wrote to memory of 2632 2384 WINWORD.EXE splwow64.exe PID 2384 wrote to memory of 2632 2384 WINWORD.EXE splwow64.exe PID 2384 wrote to memory of 2632 2384 WINWORD.EXE splwow64.exe PID 2108 wrote to memory of 2364 2108 obiddjtr.exe powershell.exe PID 2108 wrote to memory of 2364 2108 obiddjtr.exe powershell.exe PID 2108 wrote to memory of 2364 2108 obiddjtr.exe powershell.exe PID 2108 wrote to memory of 2364 2108 obiddjtr.exe powershell.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe PID 2108 wrote to memory of 2008 2108 obiddjtr.exe obiddjtr.exe -
outlook_office_path 1 IoCs
Processes:
obiddjtr.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 obiddjtr.exe -
outlook_win_path 1 IoCs
Processes:
obiddjtr.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1506706701-1246725540-2219210854-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 obiddjtr.exe
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\CLOSURE.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:2384 -
C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵PID:2632
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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:2428 -
C:\Users\Admin\AppData\Roaming\obiddjtr.exe"C:\Users\Admin\AppData\Roaming\obiddjtr.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2108 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\obiddjtr.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:2364
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C:\Users\Admin\AppData\Roaming\obiddjtr.exe"C:\Users\Admin\AppData\Roaming\obiddjtr.exe"3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2008
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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
2Credentials In Files
2Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
759KB
MD57578316e563e8a4a2983ae041a5fff39
SHA1fa5a6777784f272b191803d03a49dfe40354bcf2
SHA2562b845ff4c5ee973861ccb905e73fed0bbd46ce5e311fc8910d188ec839226f58
SHA512225fa056dff9c59915fbfe593d3d336c133eeab6be80f48de976f8d14cd773bde21716f489b45c007310da6eb61c9bd6681a7ec0a80559b246af07a1346dc9ba