Analysis
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max time kernel
141s -
max time network
148s -
platform
windows11-21h2_x64 -
resource
win11-20240802-en -
resource tags
arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system -
submitted
11/08/2024, 00:35
Static task
static1
Behavioral task
behavioral1
Sample
88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe
Resource
win11-20240802-en
General
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Target
88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe
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Size
4.7MB
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MD5
57ebe88416d90b8d2aa472e5f717cb73
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SHA1
8b3f37c002b6379248cb9007d9e38abf04f6d4f9
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SHA256
88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a
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SHA512
9b64524eb3218285ccb8df39919fd2cb8d04c9e8c1e26a04baa7fdc60323b8eedc50eada26428cda327d01c43fa998d3c24305544632cf615fcc68f5130eced5
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SSDEEP
98304:NlxB7sEAH8zTDotR7bpqj2PHx4hk8x4Gv3WrmU2dJ:9B78H8zgRnpqaPRS4wWrm7D
Malware Config
Signatures
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Detect Socks5Systemz Payload 1 IoCs
resource yara_rule behavioral2/memory/3404-86-0x0000000000C10000-0x0000000000CB2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 1516 avicodec32_64.exe 3404 avicodec32_64.exe -
Loads dropped DLL 3 IoCs
pid Process 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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 91.211.247.248 -
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 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 4552 wrote to memory of 4356 4552 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe 82 PID 4552 wrote to memory of 4356 4552 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe 82 PID 4552 wrote to memory of 4356 4552 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe 82 PID 4356 wrote to memory of 1516 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 83 PID 4356 wrote to memory of 1516 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 83 PID 4356 wrote to memory of 1516 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 83 PID 4356 wrote to memory of 3404 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 84 PID 4356 wrote to memory of 3404 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 84 PID 4356 wrote to memory of 3404 4356 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp 84
Processes
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C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe"C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4552 -
C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp"C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp" /SL5="$90050,4604514,54272,C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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:4356 -
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:1516
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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:3404
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.3MB
MD5aa6119d0f0efcc955229c1696b17ef79
SHA1854c9ee06a6b422a883113d2b9099c7b4c13a475
SHA256aa31c4972a1c6ee3fb24cc1cb3f5259f1f4cb3327b6fa23a1c7fe0b22906353c
SHA5122aa64b484488bf95246271a062b5fa6e6faa4cfa97274cc377f12c8358fcbb18015f5218604c1ca4df7fd46ac65c7fa3fc80437865d8920d1c5fed8c51c74152
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C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp
Filesize692KB
MD585fc5b8836d8625fbfa40a092386e645
SHA1a90bb83f5d8d024bb357a44682267a50406071d6
SHA2566dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950
SHA512c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
13KB
MD5a813d18268affd4763dde940246dc7e5
SHA1c7366e1fd925c17cc6068001bd38eaef5b42852f
SHA256e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64
SHA512b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4