Analysis
- max time kernel
140s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20231130-en - resource tags
- submitted
07/12/2023, 22:29
General
- Target file.exe
- Size 1.6MB
- Sample231207-2d749sga33
- SHA256 7f55a5d16bc7f4c1384c43b1ff017ca08b37bd65cb20adfe371ff4e7d2f76ef5
Malware Config
Signatures
- Drops startup file 1 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Drops file in System32 directory 4 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Drops startup file
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Drops file in System32 directory
- Checks processor information in registry
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
-
C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 HR" /sc HOURLY /rl HIGHEST2⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\schtasks.exeschtasks /create /f /RU "Admin" /tr "C:\ProgramData\OfficeTrackerNMP131\OfficeTrackerNMP131.exe" /tn "OfficeTrackerNMP131 LG" /sc ONLOGON /rl HIGHEST2⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 4288 -s 16922⤵
- Program crash
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s fhsvc1⤵
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -s WPDBusEnum1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 4288 -ip 42881⤵
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C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵
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C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
OfficeTrackerNMP131.exe
information.txt
memory/3076-76-0x0000024707A90000-0x0000024707AA0000-memory.dmp
memory/3076-92-0x0000024707B90000-0x0000024707BA0000-memory.dmp
memory/3076-108-0x0000024710180000-0x0000024710181000-memory.dmp
memory/3076-109-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-110-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-111-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-112-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-113-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-114-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-115-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-116-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-117-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-118-0x00000247101B0000-0x00000247101B1000-memory.dmp
memory/3076-119-0x000002470FDD0000-0x000002470FDD1000-memory.dmp
memory/3076-120-0x000002470FDC0000-0x000002470FDC1000-memory.dmp
memory/3076-122-0x000002470FDD0000-0x000002470FDD1000-memory.dmp
memory/3076-125-0x000002470FDC0000-0x000002470FDC1000-memory.dmp
memory/3076-128-0x000002470FD00000-0x000002470FD01000-memory.dmp
memory/3076-140-0x000002470FF00000-0x000002470FF01000-memory.dmp
memory/3076-142-0x000002470FF10000-0x000002470FF11000-memory.dmp
memory/3076-143-0x000002470FF10000-0x000002470FF11000-memory.dmp
memory/3076-144-0x0000024710020000-0x0000024710021000-memory.dmp