Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
05/06/2024, 17:31
General
- Target cfb2934512a99e940b7e0c47221728d8547ee1a597101b00675d479ba4504c4d.exe
- Size 15.2MB
- Sample240605-v3qsysdh85
- SHA256 cfb2934512a99e940b7e0c47221728d8547ee1a597101b00675d479ba4504c4d
Malware Config
Signatures
- Blackmoon, KrBanker
Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.
- Detect Blackmoon payload 6 IoCs
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 1 IoCs
- UPX packed file 12 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 4 IoCs
- Suspicious use of SendNotifyMessage 4 IoCs
- Suspicious use of SetWindowsHookEx 8 IoCs
- Suspicious use of WriteProcessMemory 10 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\cfb2934512a99e940b7e0c47221728d8547ee1a597101b00675d479ba4504c4d.exe"C:\Users\Admin\AppData\Local\Temp\cfb2934512a99e940b7e0c47221728d8547ee1a597101b00675d479ba4504c4d.exe"1⤵
- Writes to the Master Boot Record (MBR)
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\ħÊÞÊÀ½ç335µÇ¼Æ÷.exeC:\Users\Admin\AppData\Local\Temp\ħÊÞÊÀ½ç335µÇ¼Æ÷.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of SetWindowsHookEx
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C:\Users\Admin\AppData\Local\Temp\wowloot.exeC:\Users\Admin\AppData\Local\Temp\wowloot.exe2⤵
- Executes dropped EXE
- Suspicious use of SetWindowsHookEx
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C:\Users\Admin\AppData\Roaming\csrss.exeC:\Users\Admin\AppData\Roaming\csrss.exe2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
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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 --field-trial-handle=4328,i,5047420736443372512,9747851268033796534,262144 --variations-seed-version --mojo-platform-channel-handle=4352 /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
lah8CD6tmp.dll
wowloot.exe
ħÊÞÊÀ½ç335µÇ¼Æ÷.exe
ServerRdsh
csrss.exe
xswzdlwd
memory/1836-56-0x0000000000400000-0x0000000000503000-memory.dmp
memory/1836-59-0x0000000000400000-0x0000000000503000-memory.dmp
memory/3008-57-0x0000000000400000-0x000000000153B000-memory.dmp
memory/3008-2-0x0000000000400000-0x000000000153B000-memory.dmp
memory/3008-1-0x0000000000400000-0x000000000153B000-memory.dmp
memory/3008-0-0x0000000000400000-0x000000000153B000-memory.dmp
memory/3008-38-0x0000000000400000-0x000000000153B000-memory.dmp
memory/3008-5-0x0000000000400000-0x000000000153B000-memory.dmp
memory/3664-52-0x0000000000400000-0x0000000000587000-memory.dmp
memory/3664-58-0x0000000000400000-0x0000000000587000-memory.dmp
memory/4344-35-0x0000000001D31000-0x0000000001D32000-memory.dmp
memory/4344-40-0x0000000000400000-0x000000000267E000-memory.dmp
memory/4344-39-0x0000000000400000-0x000000000267E000-memory.dmp
memory/4344-34-0x0000000000400000-0x000000000267E000-memory.dmp
memory/4344-32-0x00000000026A0000-0x00000000026A1000-memory.dmp
memory/4344-31-0x0000000000400000-0x000000000267E000-memory.dmp
memory/4344-60-0x0000000000400000-0x000000000267E000-memory.dmp
memory/4344-33-0x0000000000400000-0x000000000267E000-memory.dmp