Analysis
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max time kernel
144s -
max time network
139s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
11/08/2024, 01:07
Static task
static1
Behavioral task
behavioral1
Sample
28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe
Resource
win11-20240802-en
General
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Target
28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe
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Size
4.5MB
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MD5
0350b7eceb388d5857072657d06abb54
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SHA1
761559756bd2e0c1104f50af23cdcf2115206433
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SHA256
28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f
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SHA512
954d7be4e0ac40d298df91a1ec0aeefe7d216e75d827ad59ff9dcd7bc6366d33039acc873809e841f77ccedfe4d16edf761271999df0a17b2f705d46d8554478
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SSDEEP
98304:NtJ3zP3R1ksHOfUYNSzgt1GD4gYVjujREKDqWGpkX3g/36gfjdJ:FDP3/FHP2gOGMlVqFEuq6X3gvd7D
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral1/memory/4636-83-0x00000000029C0000-0x0000000002A62000-memory.dmp family_socks5systemz behavioral1/memory/4636-106-0x00000000029C0000-0x0000000002A62000-memory.dmp family_socks5systemz behavioral1/memory/4636-107-0x00000000029C0000-0x0000000002A62000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 4952 avicodec32_64.exe 4636 avicodec32_64.exe -
Loads dropped DLL 3 IoCs
pid Process 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 141.98.234.31 -
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language avicodec32_64.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language avicodec32_64.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4852 wrote to memory of 3424 4852 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe 86 PID 4852 wrote to memory of 3424 4852 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe 86 PID 4852 wrote to memory of 3424 4852 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe 86 PID 3424 wrote to memory of 4952 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 90 PID 3424 wrote to memory of 4952 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 90 PID 3424 wrote to memory of 4952 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 90 PID 3424 wrote to memory of 4636 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 91 PID 3424 wrote to memory of 4636 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 91 PID 3424 wrote to memory of 4636 3424 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp 91
Processes
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C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4852 -
C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp"C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp" /SL5="$60114,4429287,54272,C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3424 -
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4952
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C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:4636
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.1MB
MD502377a6a0b0563f5fa84491d1c8336ad
SHA1b8c0486ce1382170d8bae609d940bbcb45122694
SHA2563fc21a22c88ebe5c547901169e5406157dd629af27f8d833bb493f2cd633a3a0
SHA512b2cb8e50903e41e4c74e95e5c2bf7cddc5dbcbf402b134eba334449f26b26d82325da826c6a6b5beb2e956606eff885d84b0419d208d4201a19b6fce0a37f43d
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4
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C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp
Filesize692KB
MD585fc5b8836d8625fbfa40a092386e645
SHA1a90bb83f5d8d024bb357a44682267a50406071d6
SHA2566dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950
SHA512c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae