Analysis
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max time kernel
141s -
max time network
126s -
platform
windows11-21h2_x64 -
resource
win11-20240802-en -
resource tags
arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system -
submitted
10/08/2024, 23:02
Static task
static1
Behavioral task
behavioral1
Sample
74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe
Resource
win11-20240802-en
General
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Target
74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe
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Size
4.5MB
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MD5
736f88af8227596dd1f4ef11e8e4cfdd
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SHA1
93e2777b194f337cbe087e0afabfa40332ce408e
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SHA256
74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5
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SHA512
1bfc55f5298d32418a9b6290cb9990efb07b35c32e204872c7d3f9807728d6dcd0a8bb046526c4d69673e2a795e76d2e734aace4e226c2896b4a8f7f3e683b7e
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SSDEEP
98304:N+EHLzC/YF25r6Snjw11s497EwMBow6I/VfV2WfNXgWq1b+dRiVdJ:RHLm/Q0G/KwUow6e39gWq9+ID
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral2/memory/3004-82-0x00000000029E0000-0x0000000002A82000-memory.dmp family_socks5systemz behavioral2/memory/3004-108-0x00000000029E0000-0x0000000002A82000-memory.dmp family_socks5systemz behavioral2/memory/3004-109-0x00000000029E0000-0x0000000002A82000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 1216 avicodec32_64.exe 3004 avicodec32_64.exe -
Loads dropped DLL 3 IoCs
pid Process 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.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 45.155.250.90 -
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 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.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 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 240 wrote to memory of 4252 240 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe 81 PID 240 wrote to memory of 4252 240 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe 81 PID 240 wrote to memory of 4252 240 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe 81 PID 4252 wrote to memory of 1216 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 83 PID 4252 wrote to memory of 1216 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 83 PID 4252 wrote to memory of 1216 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 83 PID 4252 wrote to memory of 3004 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 84 PID 4252 wrote to memory of 3004 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 84 PID 4252 wrote to memory of 3004 4252 74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp 84
Processes
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C:\Users\Admin\AppData\Local\Temp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe"C:\Users\Admin\AppData\Local\Temp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:240 -
C:\Users\Admin\AppData\Local\Temp\is-JOJ7I.tmp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp"C:\Users\Admin\AppData\Local\Temp\is-JOJ7I.tmp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp" /SL5="$601DE,4416507,54272,C:\Users\Admin\AppData\Local\Temp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.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:4252 -
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:1216
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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:3004
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.1MB
MD5acaf2d107e0e9327bb19058aadee11f4
SHA1990753e42e071338a6d91ce432c213ebbf81b941
SHA2561cc164fc6b3adb1f8c831d1792568e0ce2efb161356f601c8d7c365a3fb65d0f
SHA512501d75adf508b62679b7357018a44572b89eaec7863485ca1a4165cf3a8a87e9e0554b519e4db173760aa8082e9c980e962ba8961ee66431f6350f8d1db6f0a3
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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-JOJ7I.tmp\74aefbbc00205160efee63061675ee5d26bf7df0d648cbd7ed67fc792c36f6a5.tmp
Filesize692KB
MD585fc5b8836d8625fbfa40a092386e645
SHA1a90bb83f5d8d024bb357a44682267a50406071d6
SHA2566dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950
SHA512c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae