Analysis
- max time kernel
141s - max time network
126s - platform
windows10-2004_x64 - resource
win10v2004-20231130-en - resource tags
- submitted
10/12/2023, 03:03
General
- Target file.exe
- Size 1.6MB
- Sample231210-dj115sdcf2
- SHA256 62f3ebe7ef0cf6091ef603dd222cb8078348e609fea37ff59b34e1348ca402d1
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 64 -s 17082⤵
- 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 412 -p 64 -ip 641⤵
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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/2528-76-0x000001A058480000-0x000001A058490000-memory.dmp
memory/2528-92-0x000001A058580000-0x000001A058590000-memory.dmp
memory/2528-108-0x000001A060B70000-0x000001A060B71000-memory.dmp
memory/2528-109-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-110-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-111-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-112-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-113-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-114-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-115-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-116-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-117-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-118-0x000001A060BA0000-0x000001A060BA1000-memory.dmp
memory/2528-119-0x000001A0607C0000-0x000001A0607C1000-memory.dmp
memory/2528-120-0x000001A0607B0000-0x000001A0607B1000-memory.dmp
memory/2528-122-0x000001A0607C0000-0x000001A0607C1000-memory.dmp
memory/2528-125-0x000001A0607B0000-0x000001A0607B1000-memory.dmp
memory/2528-128-0x000001A0606F0000-0x000001A0606F1000-memory.dmp
memory/2528-140-0x000001A0608F0000-0x000001A0608F1000-memory.dmp
memory/2528-142-0x000001A060900000-0x000001A060901000-memory.dmp
memory/2528-143-0x000001A060900000-0x000001A060901000-memory.dmp
memory/2528-144-0x000001A060A10000-0x000001A060A11000-memory.dmp