Analysis
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max time kernel
143s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
10/11/2022, 12:01
Static task
static1
Behavioral task
behavioral1
Sample
614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe
Resource
win7-20220901-en
General
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Target
614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe
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Size
2.5MB
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MD5
efa05fbe474e6b3b28e3bc4ba1a74a54
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SHA1
540f0d462bfa9bf688ee0dd3a9aaead7aeec0fa1
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SHA256
614d8a0cfd93b3ab2f4e01ea490ba9d350f7ea786a18b54785581777df71b371
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SHA512
e2f673c268b96b891cdf3832e3cc554ffa2bd192eee6b6983612f8fe8483994fe071c084394b2ad1aa3659fb354d1c3fd07308bdbc5f78345763e6ba504b18f5
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SSDEEP
49152:wrk48V+6H3aJjU/IbKijgent+AjT368LGvQJtOMxqw+Uc7Vxh0:1t3aFU/TijRnPn3ZLGvCtOMQw+r
Malware Config
Extracted
systembc
n20b28tu.info:4248
n20b28tu88.info:4248
slavelever.info:4248
slavelevereoewl.info:4248
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 4 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ bfkn.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ bfkn.exe -
Downloads MZ/PE file
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Executes dropped EXE 2 IoCs
pid Process 1244 bfkn.exe 4892 bfkn.exe -
Checks BIOS information in registry 2 TTPs 8 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion bfkn.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion bfkn.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion bfkn.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion bfkn.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.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Wine 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 4 IoCs
pid Process 716 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe 4972 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe 1244 bfkn.exe 4892 bfkn.exe -
Drops file in Windows directory 5 IoCs
description ioc Process File opened for modification C:\Windows\Tasks\wow64.job 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe File created C:\Windows\Tasks\djxfodcpncbombxnpec.job 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe File created C:\Windows\Tasks\wow64.job bfkn.exe File opened for modification C:\Windows\Tasks\wow64.job bfkn.exe File created C:\Windows\Tasks\wow64.job 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
pid Process 716 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe 716 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe 4972 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe 4972 614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe 1244 bfkn.exe 1244 bfkn.exe 4892 bfkn.exe 4892 bfkn.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe"C:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:716
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C:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exeC:\Users\Admin\AppData\Local\Temp\614D8A0CFD93B3AB2F4E01EA490BA9D350F7EA786A18B.exe start1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:4972
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C:\Windows\TEMP\bfkn.exeC:\Windows\TEMP\bfkn.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
PID:1244
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C:\Windows\TEMP\bfkn.exeC:\Windows\TEMP\bfkn.exe start1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
PID:4892
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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Filesize
2.0MB
MD5dd3a5df905b4aca6028903b83919514a
SHA1801fc5875148a0a648e6e246dcbd1ce0ad6c007f
SHA25656ac1a8dc72d7a18f0af4f434e32479b14f67c3fe99c3bb23d38492e51412957
SHA51234bee5e5d9f645f4757762b85a8765919058baf7fc4aad8f11d8f2f80ff80d2daa931c29b83e8437242a9ca2718794a97caa2881ec40a6d68811e386b08e6af1
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Filesize
352B
MD568667eb391c47b343427836ba16952ec
SHA18812c6573d5f02a1436e5c82a36ff430ed9b987c
SHA2563de88331dc719e45e458fbb26a4527dfead1c82624e1d1785b226d66bda8fe1a
SHA512c3d67a479dd610de1d09a59a025dd08189186cadf2fa107f2ae3f15fa2f460f909d568d6a8d878f2cb167718f2b02d4eedfd513b0be16057378bd1d2448ba594
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Filesize
2.0MB
MD5dd3a5df905b4aca6028903b83919514a
SHA1801fc5875148a0a648e6e246dcbd1ce0ad6c007f
SHA25656ac1a8dc72d7a18f0af4f434e32479b14f67c3fe99c3bb23d38492e51412957
SHA51234bee5e5d9f645f4757762b85a8765919058baf7fc4aad8f11d8f2f80ff80d2daa931c29b83e8437242a9ca2718794a97caa2881ec40a6d68811e386b08e6af1
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Filesize
2.0MB
MD5dd3a5df905b4aca6028903b83919514a
SHA1801fc5875148a0a648e6e246dcbd1ce0ad6c007f
SHA25656ac1a8dc72d7a18f0af4f434e32479b14f67c3fe99c3bb23d38492e51412957
SHA51234bee5e5d9f645f4757762b85a8765919058baf7fc4aad8f11d8f2f80ff80d2daa931c29b83e8437242a9ca2718794a97caa2881ec40a6d68811e386b08e6af1