Analysis
- max time kernel
11s - max time network
113s - platform
windows10_x64 - resource
win10v20210410 - submitted
25/06/2021, 07:30
General
- Target d3d55fc7ded011f820f3e180dbeabbe8.exe
- Size 174KB
- Sample210625-2fklt5jtr2
- SHA256 ee217c9b59c333cf854a2e6c7c8e3ecd82c36527143dfbc831ee449297e9c88a
Malware Config
Signatures
- Executes dropped EXE 3 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- 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.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\d3d55fc7ded011f820f3e180dbeabbe8.exe"C:\Users\Admin\AppData\Local\Temp\d3d55fc7ded011f820f3e180dbeabbe8.exe"1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\3358292.exe"C:\Users\Admin\AppData\Roaming\3358292.exe"2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Roaming\5085964.exe"C:\Users\Admin\AppData\Roaming\5085964.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"C:\Users\Admin\AppData\Roaming\WinHost\WinHoster.exe"3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/2576-129-0x000000001BB30000-0x000000001BB32000-memory.dmp
memory/2576-114-0x0000000000FC0000-0x0000000000FC1000-memory.dmp
memory/2576-116-0x00000000016F0000-0x00000000016F1000-memory.dmp
memory/2576-118-0x0000000001720000-0x0000000001721000-memory.dmp
memory/2576-117-0x0000000001700000-0x000000000171F000-memory.dmp
memory/2616-143-0x0000000005460000-0x0000000005461000-memory.dmp
memory/2616-152-0x0000000008E40000-0x0000000008E41000-memory.dmp
memory/2616-148-0x0000000008890000-0x0000000008891000-memory.dmp
memory/2616-125-0x0000000000BD0000-0x0000000000BD1000-memory.dmp
memory/2616-134-0x0000000007AF0000-0x0000000007B20000-memory.dmp
memory/2868-135-0x0000000004E00000-0x0000000004E01000-memory.dmp
memory/2868-133-0x0000000007810000-0x0000000007811000-memory.dmp
memory/2868-132-0x0000000007D10000-0x0000000007D11000-memory.dmp
memory/2868-127-0x0000000000B20000-0x0000000000B21000-memory.dmp
memory/2868-131-0x0000000004D70000-0x0000000004D80000-memory.dmp
memory/2868-130-0x00000000052D0000-0x00000000052D1000-memory.dmp
memory/3380-149-0x0000000007450000-0x0000000007451000-memory.dmp
memory/3380-150-0x0000000004AB0000-0x0000000004AB1000-memory.dmp