Analysis
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max time kernel
143s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
29-06-2024 07:20
Static task
static1
Behavioral task
behavioral1
Sample
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe
Resource
win10v2004-20240508-en
Behavioral task
behavioral2
Sample
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe
Resource
win11-20240611-en
General
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Target
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe
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Size
4.9MB
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MD5
dfb176122ad4f536187cb8ce0ad60ad3
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SHA1
5b2d9e9f8aaf507cacc66eaadab7adb9343052aa
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SHA256
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4
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SHA512
b341728feac15b6941c387b1f8b3ff3e9fccb580727a128f0f910d10ed0a8c508c3cad8dbbbb299d5591987ebabaf888b26a4a5fcecdab7c49b52a568fa0a177
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SSDEEP
98304:CiL1eZyaXe3fxNWMg1RcKRXCwQZ/7CEm6SUpSUUMHFOF7W4h2bcC1Qxr:h1QX4DhgHcKEZjeoSw0ytbpQB
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1952-86-0x00000000009B0000-0x0000000000A51000-memory.dmp family_socks5systemz behavioral1/memory/1952-109-0x00000000009B0000-0x0000000000A51000-memory.dmp family_socks5systemz behavioral1/memory/1952-110-0x00000000009B0000-0x0000000000A51000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmpvkfreeaudiosaver.exevkfreeaudiosaver.exepid process 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp 1816 vkfreeaudiosaver.exe 1952 vkfreeaudiosaver.exe -
Loads dropped DLL 1 IoCs
Processes:
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmppid process 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
Processes:
description ioc Destination IP 152.89.198.214 -
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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmppid process 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmpdescription pid process target process PID 1056 wrote to memory of 4028 1056 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp PID 1056 wrote to memory of 4028 1056 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp PID 1056 wrote to memory of 4028 1056 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp PID 4028 wrote to memory of 1816 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp vkfreeaudiosaver.exe PID 4028 wrote to memory of 1816 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp vkfreeaudiosaver.exe PID 4028 wrote to memory of 1816 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp vkfreeaudiosaver.exe PID 4028 wrote to memory of 1952 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp vkfreeaudiosaver.exe PID 4028 wrote to memory of 1952 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp vkfreeaudiosaver.exe PID 4028 wrote to memory of 1952 4028 3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp vkfreeaudiosaver.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe"C:\Users\Admin\AppData\Local\Temp\3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-51UNP.tmp\3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp"C:\Users\Admin\AppData\Local\Temp\is-51UNP.tmp\3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmp" /SL5="$401CC,4933346,54272,C:\Users\Admin\AppData\Local\Temp\3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exe" -s3⤵
- Executes dropped EXE
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\is-51UNP.tmp\3a9ac13cb6255e6c8e46096de49681d9c82a35e5128ae22b6dcfd6366f7315b4.tmpFilesize
680KB
MD52063e43e6fbdcae73e5424ca0d9dc199
SHA1ee17088154fe281ee6b2b07f7ad8b490abe78dbf
SHA2568a16636dc95ffac9f6e7dc17a178b87b4d3df80c905bdb7d43cb0d98718afa37
SHA5125c26096b16e0230f462738939198026bd84fb8b2eab80258df7766a3be995802aea002e76fcb42f1e82470059bf4422abb0aeac7fe49a79a1204f9a69ab3ef87
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C:\Users\Admin\AppData\Local\Temp\is-GSV2P.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver.exeFilesize
3.2MB
MD5b340f37cb03b2e7ddeda53aa2a997db2
SHA11c050eadc50e65954ee0b83b90d11001ac62bedf
SHA25630e6f3223dac4397683d95ab113d4909a1068706032f338240a1000f8c088cc0
SHA51207479d8c40e98935fbd9ccaa0aa0b38a803ed13dfc8bfe183c430b70692fb35ad07b4075b5cd8fc91fe1a762a7d1e832640e8b88438b8fc5f85fe635a5c66139
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memory/1056-69-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/1056-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/1056-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/1816-59-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1816-60-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1816-65-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1816-64-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-74-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-90-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-117-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-71-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-114-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-77-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-80-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-83-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-86-0x00000000009B0000-0x0000000000A51000-memory.dmpFilesize
644KB
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memory/1952-68-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-93-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-96-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-99-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-102-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-105-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-108-0x0000000000400000-0x0000000000740000-memory.dmpFilesize
3.2MB
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memory/1952-109-0x00000000009B0000-0x0000000000A51000-memory.dmpFilesize
644KB
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memory/1952-110-0x00000000009B0000-0x0000000000A51000-memory.dmpFilesize
644KB
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memory/4028-12-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/4028-70-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB