Analysis
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max time kernel
143s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
29-06-2024 11:55
Static task
static1
Behavioral task
behavioral1
Sample
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe
Resource
win10v2004-20240611-en
Behavioral task
behavioral2
Sample
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe
Resource
win11-20240611-en
General
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Target
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe
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Size
5.0MB
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MD5
9bce1e8b20d486989240f892d818421e
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SHA1
aae834e9eb3b2b92fee64cc9e8132a070ac23cb2
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SHA256
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5
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SHA512
cb781bd7722813be483e927990eae9c07a899106566cbb7455a5139cd8934073cfd13c3c68da7cf00ab2e62025a3066ebf218e5043242e4ac4452fc5f0939448
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SSDEEP
98304:Che1J5MVCvdr/ye4bTUQhFsXH6AopxOlBQFLfVxLNYtU/cwq7D8dQxY:qQeUby7oKsXTonskRxZSSi7D8dQC
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/3748-86-0x0000000000920000-0x00000000009C1000-memory.dmp family_socks5systemz behavioral1/memory/3748-109-0x0000000000920000-0x00000000009C1000-memory.dmp family_socks5systemz behavioral1/memory/3748-110-0x0000000000920000-0x00000000009C1000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmpvkfreeaudiosaver32.exevkfreeaudiosaver32.exepid process 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp 1364 vkfreeaudiosaver32.exe 3748 vkfreeaudiosaver32.exe -
Loads dropped DLL 1 IoCs
Processes:
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmppid process 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.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 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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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:
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmppid process 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmpdescription pid process target process PID 4956 wrote to memory of 396 4956 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp PID 4956 wrote to memory of 396 4956 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp PID 4956 wrote to memory of 396 4956 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp PID 396 wrote to memory of 1364 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp vkfreeaudiosaver32.exe PID 396 wrote to memory of 1364 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp vkfreeaudiosaver32.exe PID 396 wrote to memory of 1364 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp vkfreeaudiosaver32.exe PID 396 wrote to memory of 3748 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp vkfreeaudiosaver32.exe PID 396 wrote to memory of 3748 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp vkfreeaudiosaver32.exe PID 396 wrote to memory of 3748 396 42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp vkfreeaudiosaver32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe"C:\Users\Admin\AppData\Local\Temp\42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-A11L7.tmp\42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp"C:\Users\Admin\AppData\Local\Temp\is-A11L7.tmp\42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmp" /SL5="$9011C,5001016,54272,C:\Users\Admin\AppData\Local\Temp\42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.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\vkfreeaudiosaver32.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32.exe"C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32.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-A11L7.tmp\42546a61d6d80e4d1a171f4a08fae2ecd12138ad939280fafed39f717b0de2f5.tmpFilesize
680KB
MD531afd676fdf62a3ee6a499837ea0ffef
SHA19a014771b713474cd787cd20857b79b6cdf236c3
SHA256ed615763544059955ebae2a355a1ecca2bba3af561c82b274ee86b303d52a292
SHA512ca9e0d6d3f174027aeafa15a2b7e3642c8e5208d69dd7cafb5d5e841298973503a1e53226ae3df7e2e2601b574da55dde16bcc93b22101710060876b248979b3
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C:\Users\Admin\AppData\Local\Temp\is-MNU0D.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\VK Free Audio Saver\vkfreeaudiosaver32.exeFilesize
3.3MB
MD51176ff705ec86130f8d2039bdef0e8a4
SHA186ffc830593a39720a34c9ff363b856b369cefad
SHA2560a34d1b8d8af124089a22ba22d33966650fa715003ffad09d33f24dceeab55ad
SHA5126770e97d6f0c34d17da2a217ebe1161121d2413dafa10b42b99ab555a610e3852563c33cffbb5248560d374b8f9976bab5b451d339a4b3cf04dd8fbda2f23356
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memory/396-70-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/396-16-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/1364-65-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/1364-59-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/1364-60-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/1364-63-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-74-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-93-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-117-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-114-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-71-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-110-0x0000000000920000-0x00000000009C1000-memory.dmpFilesize
644KB
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memory/3748-77-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-80-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-83-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-86-0x0000000000920000-0x00000000009C1000-memory.dmpFilesize
644KB
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memory/3748-90-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-68-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-96-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-99-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-102-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-105-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-108-0x0000000000400000-0x0000000000751000-memory.dmpFilesize
3.3MB
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memory/3748-109-0x0000000000920000-0x00000000009C1000-memory.dmpFilesize
644KB
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memory/4956-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/4956-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/4956-69-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB