Analysis
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max time kernel
143s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
10/08/2024, 20:25
Static task
static1
Behavioral task
behavioral1
Sample
8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe
Resource
win10v2004-20240802-en
General
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Target
8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe
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Size
4.6MB
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MD5
e2a42238665237a610fc01bf93a036c0
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SHA1
185ad7b607cb681886e892da0514c871780663fa
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SHA256
8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b
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SHA512
9224638f0794358a802c1ea360457636cadbf7c7fd5226d920ca9c26f47bf50a2689c608b33d065a63b7c6f93fd006ae782b4214dbd95d77c133994f94e3d3de
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SSDEEP
98304:NIBDxKfjcEtBdgSqMBYGx4FqWzWQw9y8rCKimem/Su+q/aQGTkIDdJ:OxsjZTqs78TSQkQKivmqfq/FGTkIDD
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
resource yara_rule behavioral2/memory/2724-84-0x00000000009B0000-0x0000000000A52000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 4640 avicodec32_64.exe 2724 avicodec32_64.exe -
Loads dropped DLL 3 IoCs
pid Process 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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 -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4936 wrote to memory of 4576 4936 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe 86 PID 4936 wrote to memory of 4576 4936 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe 86 PID 4936 wrote to memory of 4576 4936 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe 86 PID 4576 wrote to memory of 4640 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 90 PID 4576 wrote to memory of 4640 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 90 PID 4576 wrote to memory of 4640 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 90 PID 4576 wrote to memory of 2724 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 91 PID 4576 wrote to memory of 2724 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 91 PID 4576 wrote to memory of 2724 4576 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp 91
Processes
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C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe"C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4936 -
C:\Users\Admin\AppData\Local\Temp\is-9BN1J.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp"C:\Users\Admin\AppData\Local\Temp\is-9BN1J.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp" /SL5="$B01FE,4588230,54272,C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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:4576 -
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:4640
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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:2724
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.3MB
MD52ff96fc8212a5ea6781036c03d92bf66
SHA1cfd302f29766e9801b7e858d4257defc26e70de3
SHA256684ee3dbb9a2997433acaa9d878e5e48ad585f0ac0d19fbcb5ff05caf47e0087
SHA51226f4c894ef2dee24ccac4a535e05272ecec6a94249582514a5b19d69327b687305b224c092e4d9667e92f8979e213873b51e789413cf87935d84ed1eff3e6ab0
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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-9BN1J.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp
Filesize692KB
MD585fc5b8836d8625fbfa40a092386e645
SHA1a90bb83f5d8d024bb357a44682267a50406071d6
SHA2566dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950
SHA512c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae