Analysis
- max time kernel
147s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
02/01/2024, 23:51
General
- Target tuc6.exe
- Size 4.4MB
- Sample240102-3v5wxaede2
- SHA256 3d106114b04dfc52f4f90ac77925e9ccb455b486ac7d7b3d8a53d29568dfdadd
Malware Config
Signatures
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Drops file in Program Files directory 50 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\tuc6.exe"C:\Users\Admin\AppData\Local\Temp\tuc6.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-T8KM8.tmp\tuc6.tmp"C:\Users\Admin\AppData\Local\Temp\is-T8KM8.tmp\tuc6.tmp" /SL5="$501C6,4321348,54272,C:\Users\Admin\AppData\Local\Temp\tuc6.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Program Files (x86)\Java FAX Extension Class\javafax.exe"C:\Program Files (x86)\Java FAX Extension Class\javafax.exe" -i3⤵
- Executes dropped EXE
-
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C:\Program Files (x86)\Java FAX Extension Class\javafax.exe"C:\Program Files (x86)\Java FAX Extension Class\javafax.exe" -s3⤵
- Executes dropped EXE
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
javafax.exe
javafax.exe
javafax.exe
tuc6.tmp
_iscrypt.dll
_isdecmp.dll
memory/2184-123-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2184-7-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2184-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2184-2-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4468-145-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-149-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-178-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-175-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-172-0x0000000000810000-0x00000000008AF000-memory.dmp
memory/4468-171-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-168-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-136-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-138-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-165-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-142-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-161-0x0000000000810000-0x00000000008AF000-memory.dmp
memory/4468-146-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-162-0x0000000000810000-0x00000000008AF000-memory.dmp
memory/4468-152-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-155-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4468-158-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4904-11-0x00000000006A0000-0x00000000006A1000-memory.dmp
memory/4904-141-0x00000000006A0000-0x00000000006A1000-memory.dmp
memory/4904-126-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/4904-8-0x0000000000400000-0x00000000004BC000-memory.dmp
memory/4916-129-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4916-134-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4916-132-0x0000000000400000-0x000000000053A000-memory.dmp
memory/4916-130-0x0000000000400000-0x000000000053A000-memory.dmp