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
03/08/2024, 00:31
Static task
static1
Behavioral task
behavioral1
Sample
54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe
Resource
win10v2004-20240802-en
Behavioral task
behavioral2
Sample
54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe
Resource
win11-20240802-en
General
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Target
54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe
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Size
4.0MB
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MD5
2effdd07d1b96669ea81f699672c5f09
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SHA1
bfc86d7a502a0e639816f95951eadd9288094b4d
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SHA256
54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926
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SHA512
18c9a3403c53f1278f6919d6d6a193f4c345df1e7ed8ba1808b89c3b9eeec11bb087dc8a8918f415a7f950d11df9845fee1cfd7ea8852fcd2c3c70ca4e97202f
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SSDEEP
98304:NPdKgnV4cxmxN0ex4Us4Tdl3ggmghX6nUERRld2KKlitUnidK:NycQf4Us4rrmghKn/loKK1ni4
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral1/memory/640-78-0x0000000000CA0000-0x0000000000D42000-memory.dmp family_socks5systemz behavioral1/memory/640-101-0x0000000000CA0000-0x0000000000D42000-memory.dmp family_socks5systemz behavioral1/memory/640-102-0x0000000000CA0000-0x0000000000D42000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 1028 ac3filter32_64.exe 640 ac3filter32_64.exe -
Loads dropped DLL 1 IoCs
pid Process 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.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 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ac3filter32_64.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ac3filter32_64.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 1224 wrote to memory of 1468 1224 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe 82 PID 1224 wrote to memory of 1468 1224 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe 82 PID 1224 wrote to memory of 1468 1224 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe 82 PID 1468 wrote to memory of 1028 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 85 PID 1468 wrote to memory of 1028 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 85 PID 1468 wrote to memory of 1028 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 85 PID 1468 wrote to memory of 640 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 86 PID 1468 wrote to memory of 640 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 86 PID 1468 wrote to memory of 640 1468 54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp 86
Processes
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C:\Users\Admin\AppData\Local\Temp\54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe"C:\Users\Admin\AppData\Local\Temp\54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1224 -
C:\Users\Admin\AppData\Local\Temp\is-46BIS.tmp\54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp"C:\Users\Admin\AppData\Local\Temp\is-46BIS.tmp\54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp" /SL5="$7005A,3980347,54272,C:\Users\Admin\AppData\Local\Temp\54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.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:1468 -
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1028
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C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:640
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.7MB
MD57b8d8edb2ea6f085c3f7fd8f205d1977
SHA139d411ef00df5ba7795796f06b6971961d1e9220
SHA2563b045b1123c3ae4c103217f218f1f218a21ed7e0a118616d8374738c970c31cf
SHA51242b235b2b9ec77be8d47414b8cd69e51c264bfaa88258be3a14e98eab17c0e18217a07816f706b0a7cf82f0a77fc58507c75e8470054dbe3cc085a2e39a9ce84
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C:\Users\Admin\AppData\Local\Temp\is-46BIS.tmp\54a5a788f5f9943f4734b0cf9e499d6d6cf9c0ba0df3c63a8eec9195431b2926.tmp
Filesize692KB
MD5849bb5c3439284a175f581ec281ca92e
SHA18bd0737eac1a74de4d62d66911ca7ed9f61cbc0f
SHA25633a8f60e50240aecdbedc45922032025376ecccc0c1acbd44c82f12985e82206
SHA512ac7bd629b6ed2595c6af4ef0737d7d801c8c35ebb4638ec2c19569511157a1543a6fa91d1a15708810865ece1cfb27367480754a7debf716d322d1eb59c5f625
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63