Analysis
- max time kernel
150s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
05/03/2024, 09:00
General
- Target b44f95c332073b28fe95157f470f8f2a.exe
- Size 1.0MB
- Sample240305-kyjhzabb4v
- SHA256 fdb6b5f3b83553b83111bd61152a4c4bd29996d778d6c118f52f01abd9435fe5
Malware Config
Extracted
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blustealer
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https://api.telegram.org/bot1945669405:AAEo5Zfx9GfeIsr07vB55CuJD00-glDv8-w/sendMessage?chat_id=1890833638
Signatures
- A310logger
A310 Logger is a .NET stealer/logger targeting passwords from browsers and email clients.
- BluStealer
A Modular information stealer written in Visual Basic.
- A310logger Executable 2 IoCs
- Executes dropped EXE 1 IoCs
- Reads WinSCP keys stored on the system 2 TTPs
Tries to access WinSCP stored sessions.
- Reads local data of messenger clients 2 TTPs
Infostealers often target stored data of messaging applications, which can include saved credentials and account information.
- 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
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Script User-Agent 1 IoCs
Uses user-agent string associated with script host/environment.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 13 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\b44f95c332073b28fe95157f470f8f2a.exe"C:\Users\Admin\AppData\Local\Temp\b44f95c332073b28fe95157f470f8f2a.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\b44f95c332073b28fe95157f470f8f2a.exe"C:\Users\Admin\AppData\Local\Temp\b44f95c332073b28fe95157f470f8f2a.exe"2⤵
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C:\Users\Admin\AppData\Local\Temp\b44f95c332073b28fe95157f470f8f2a.exe"C:\Users\Admin\AppData\Local\Temp\b44f95c332073b28fe95157f470f8f2a.exe"2⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exeC:\Users\Admin\AppData\Roaming\Microsoft\Windows\Templates\NET4\Fox.exe3⤵
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3612 --field-trial-handle=2284,i,9807419199535700662,2319175108930815708,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
IIU8IBF3L9.zip
Fox.exe
credentials.txt
memory/872-13-0x0000000000400000-0x000000000045F000-memory.dmp
memory/872-62-0x0000000000400000-0x000000000045F000-memory.dmp
memory/872-16-0x0000000000400000-0x000000000045F000-memory.dmp
memory/3612-59-0x00007FFE5D6E0000-0x00007FFE5E1A1000-memory.dmp
memory/3612-51-0x0000000002470000-0x0000000002480000-memory.dmp
memory/3612-50-0x00007FFE5D6E0000-0x00007FFE5E1A1000-memory.dmp
memory/3612-49-0x00000000001A0000-0x0000000000252000-memory.dmp
memory/4440-6-0x0000000005AA0000-0x0000000005AAA000-memory.dmp
memory/4440-7-0x0000000005E30000-0x0000000005E4A000-memory.dmp
memory/4440-12-0x0000000009D70000-0x0000000009DD6000-memory.dmp
memory/4440-10-0x0000000005DB0000-0x0000000005DC0000-memory.dmp
memory/4440-9-0x0000000074A40000-0x00000000751F0000-memory.dmp
memory/4440-19-0x0000000074A40000-0x00000000751F0000-memory.dmp
memory/4440-8-0x00000000071F0000-0x0000000007544000-memory.dmp
memory/4440-11-0x00000000076C0000-0x0000000007790000-memory.dmp
memory/4440-0-0x0000000074A40000-0x00000000751F0000-memory.dmp
memory/4440-5-0x0000000005DB0000-0x0000000005DC0000-memory.dmp
memory/4440-4-0x0000000005B60000-0x0000000005BFC000-memory.dmp
memory/4440-3-0x0000000005AC0000-0x0000000005B52000-memory.dmp
memory/4440-2-0x0000000005FD0000-0x0000000006574000-memory.dmp
memory/4440-1-0x0000000000F90000-0x0000000001098000-memory.dmp