Analysis
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max time kernel
46s -
max time network
107s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
01-07-2022 03:11
Static task
static1
Behavioral task
behavioral1
Sample
d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe
Resource
win10v2004-20220414-en
General
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Target
d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe
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Size
2.1MB
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MD5
71d88d948dbbdef44e4cdc018dbfdfaa
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SHA1
66d413da43d8328b37251bda200e57f93287f9f8
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SHA256
d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f
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SHA512
0ae41e50b8f45504b57967295e1637d08570203286f59b86ff6ea54686dc5ec50765a5005b0bd35701e6a3ab8cf836582aef7f74868232161509983de84f1419
Malware Config
Signatures
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suricata: ET MALWARE JS/Nemucod requesting EXE payload 2016-02-01
suricata: ET MALWARE JS/Nemucod requesting EXE payload 2016-02-01
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
Pub1.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ Pub1.exe -
Executes dropped EXE 1 IoCs
Processes:
Pub1.exepid process 1480 Pub1.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
Pub1.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion Pub1.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion Pub1.exe -
Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
Processes:
Pub1.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Wine Pub1.exe -
Loads dropped DLL 4 IoCs
Processes:
d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exePub1.exepid process 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe 1480 Pub1.exe 1480 Pub1.exe -
Legitimate hosting services abused for malware hosting/C2 1 TTPs
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Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
Pub1.exepid process 1480 Pub1.exe -
Drops file in Program Files directory 1 IoCs
Processes:
d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exedescription ioc process File created C:\Program Files (x86)\Cess\Pub1.exe d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Processes:
Pub1.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436 Pub1.exe Set value (data) \REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\A8985D3A65E5E5C4B2D7D66D40C6DD2FB19C5436\Blob = 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 Pub1.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
Pub1.exepid process 1480 Pub1.exe -
Suspicious use of WriteProcessMemory 7 IoCs
Processes:
d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exedescription pid process target process PID 632 wrote to memory of 1480 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe Pub1.exe PID 632 wrote to memory of 1480 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe Pub1.exe PID 632 wrote to memory of 1480 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe Pub1.exe PID 632 wrote to memory of 1480 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe Pub1.exe PID 632 wrote to memory of 1480 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe Pub1.exe PID 632 wrote to memory of 1480 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe Pub1.exe PID 632 wrote to memory of 1480 632 d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe Pub1.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe"C:\Users\Admin\AppData\Local\Temp\d7782e08a3b44b4ef4610f7833c96b1df8f67de10cf2cb09d55b7685751a898f.exe"1⤵
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
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C:\Program Files (x86)\Cess\Pub1.exe"C:\Program Files (x86)\Cess\Pub1.exe"2⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Loads dropped DLL
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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C:\Program Files (x86)\Cess\Pub1.exeFilesize
2.2MB
MD59cf1213de4557dfe29bce1c7f597afa2
SHA186f6898cd6561be8f499e375c78920f7f39d61ee
SHA2560dae26cde7e6fe48ee85c4ac2b70965bf1492524825326fba7acf2b11c452c39
SHA51231c173f013f723c642041b1ecd22a5109ca05495d5d6adfc1f7e3d9297ad9739488ac711acb9a5bb28b3dd7a29ab8916ffa9c160bdef8fc8e452950857b8d0df
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C:\Program Files (x86)\Cess\Pub1.exeFilesize
2.2MB
MD59cf1213de4557dfe29bce1c7f597afa2
SHA186f6898cd6561be8f499e375c78920f7f39d61ee
SHA2560dae26cde7e6fe48ee85c4ac2b70965bf1492524825326fba7acf2b11c452c39
SHA51231c173f013f723c642041b1ecd22a5109ca05495d5d6adfc1f7e3d9297ad9739488ac711acb9a5bb28b3dd7a29ab8916ffa9c160bdef8fc8e452950857b8d0df
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\Program Files (x86)\Cess\Pub1.exeFilesize
2.2MB
MD59cf1213de4557dfe29bce1c7f597afa2
SHA186f6898cd6561be8f499e375c78920f7f39d61ee
SHA2560dae26cde7e6fe48ee85c4ac2b70965bf1492524825326fba7acf2b11c452c39
SHA51231c173f013f723c642041b1ecd22a5109ca05495d5d6adfc1f7e3d9297ad9739488ac711acb9a5bb28b3dd7a29ab8916ffa9c160bdef8fc8e452950857b8d0df
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\Program Files (x86)\Cess\Pub1.exeFilesize
2.2MB
MD59cf1213de4557dfe29bce1c7f597afa2
SHA186f6898cd6561be8f499e375c78920f7f39d61ee
SHA2560dae26cde7e6fe48ee85c4ac2b70965bf1492524825326fba7acf2b11c452c39
SHA51231c173f013f723c642041b1ecd22a5109ca05495d5d6adfc1f7e3d9297ad9739488ac711acb9a5bb28b3dd7a29ab8916ffa9c160bdef8fc8e452950857b8d0df
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\Program Files (x86)\Cess\Pub1.exeFilesize
2.2MB
MD59cf1213de4557dfe29bce1c7f597afa2
SHA186f6898cd6561be8f499e375c78920f7f39d61ee
SHA2560dae26cde7e6fe48ee85c4ac2b70965bf1492524825326fba7acf2b11c452c39
SHA51231c173f013f723c642041b1ecd22a5109ca05495d5d6adfc1f7e3d9297ad9739488ac711acb9a5bb28b3dd7a29ab8916ffa9c160bdef8fc8e452950857b8d0df
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\Users\Admin\AppData\Local\Temp\nst1F84.tmp\UAC.dllFilesize
14KB
MD5adb29e6b186daa765dc750128649b63d
SHA1160cbdc4cb0ac2c142d361df138c537aa7e708c9
SHA2562f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08
SHA512b28adcccf0c33660fecd6f95f28f11f793dc9988582187617b4c113fb4e6fdad4cf7694cd8c0300a477e63536456894d119741a940dda09b7df3ff0087a7eada
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memory/632-63-0x0000000002600000-0x0000000002B5D000-memory.dmpFilesize
5.4MB
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memory/632-54-0x0000000075391000-0x0000000075393000-memory.dmpFilesize
8KB
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memory/1480-57-0x0000000000000000-mapping.dmp
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memory/1480-64-0x0000000000400000-0x000000000095D000-memory.dmpFilesize
5.4MB
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memory/1480-65-0x0000000001360000-0x00000000018BD000-memory.dmpFilesize
5.4MB
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memory/1480-66-0x0000000077910000-0x0000000077A90000-memory.dmpFilesize
1.5MB
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memory/1480-67-0x0000000000400000-0x000000000095D000-memory.dmpFilesize
5.4MB
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memory/1480-68-0x0000000000400000-0x000000000095D000-memory.dmpFilesize
5.4MB
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memory/1480-69-0x0000000077910000-0x0000000077A90000-memory.dmpFilesize
1.5MB