Analysis
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max time kernel
300s -
max time network
262s -
platform
windows10-1703_x64 -
resource
win10-20240611-en -
resource tags
arch:x64arch:x86image:win10-20240611-enlocale:en-usos:windows10-1703-x64system -
submitted
20-06-2024 22:45
Static task
static1
Behavioral task
behavioral1
Sample
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe
Resource
win10-20240611-en
General
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Target
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe
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Size
4.8MB
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MD5
386c7d06155d8754f0eeddf9a984eef2
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SHA1
1613630666cb0ba426ad0acf0cb8a6d7ee0d2a4e
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SHA256
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9
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SHA512
5e2e1b8229e5e6026277b1630cc718592667aeef3603979ca0a08f137856f3ebed5765dd699107db0646ced40d8e2ffa539877272ab62b4ac52e179ef0f39f82
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SSDEEP
98304:my5CT2EQsbOgvAi9VaFgWoTKOwTuKRygJlt4A5nG/C:1CT2Hgvbbm4JwSKRy+BVG/C
Malware Config
Extracted
socks5systemz
bhvfdte.com
http://bhvfdte.com/search/?q=67e28dd8690ba728400aae4c7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978f271ea771795af8e05c645db22f31dfe339426fa11a366c350adb719a9577e55b8603e983a608ff718c2ec93983d
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/3644-84-0x00000000008E0000-0x0000000000982000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmpm4atomp3converter.exem4atomp3converter.exepid process 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp 220 m4atomp3converter.exe 3644 m4atomp3converter.exe -
Loads dropped DLL 1 IoCs
Processes:
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmppid process 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.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:
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmppid process 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmpdescription pid process target process PID 2688 wrote to memory of 408 2688 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp PID 2688 wrote to memory of 408 2688 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp PID 2688 wrote to memory of 408 2688 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp PID 408 wrote to memory of 220 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp m4atomp3converter.exe PID 408 wrote to memory of 220 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp m4atomp3converter.exe PID 408 wrote to memory of 220 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp m4atomp3converter.exe PID 408 wrote to memory of 3644 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp m4atomp3converter.exe PID 408 wrote to memory of 3644 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp m4atomp3converter.exe PID 408 wrote to memory of 3644 408 51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp m4atomp3converter.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe"C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-2GFR2.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp"C:\Users\Admin\AppData\Local\Temp\is-2GFR2.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmp" /SL5="$50234,4801606,54272,C:\Users\Admin\AppData\Local\Temp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.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\M4A to MP3 Free Converter\m4atomp3converter.exe"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.exe"C:\Users\Admin\AppData\Local\M4A to MP3 Free Converter\m4atomp3converter.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\M4A to MP3 Free Converter\m4atomp3converter.exeFilesize
2.9MB
MD598889915a7331404165b1b921af5c5e7
SHA11300f471cb455cf375eefc63c6f07ba955e14174
SHA256cef231d56d9ba3b136f92be995e89d39dd4d08eae57a34e03bc762b658b195e9
SHA512e6282b56925afcb7504ae2cc526964043ed0c1a6a10385ecae561dcc70345d8e5846ed2b2596a8a6469dba5cb9327fcc267c091c77172d269b56b69d4fc5e103
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C:\Users\Admin\AppData\Local\Temp\is-2GFR2.tmp\51bb1e820aa2e4148973c854ddb8a322cccca0f4885fb40cb62e760feaf8e9d9.tmpFilesize
680KB
MD5984e6b8a7e6fa5cbf5a45904b1defc00
SHA137ce92d6cf1a117a191d14cc7fa1a6a97c05c967
SHA2563313fd9ad369bdee368d356036858a7fcc6182175a30a92a6b73e41e1b2a5eb7
SHA51255af997bfcc532ff01e593471197555432481587c263eb3777e511c656e030edd6c34edce0778b07e117dae4b9ed18976d2ec5c2fe127511a5f29928223ab7c8
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\Users\Admin\AppData\Local\Temp\is-G91EL.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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memory/220-59-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/220-60-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/220-64-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/408-7-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/408-68-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/2688-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/2688-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/2688-67-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3644-78-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-97-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-75-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-69-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-81-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-84-0x00000000008E0000-0x0000000000982000-memory.dmpFilesize
648KB
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memory/3644-86-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-91-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-94-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-72-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-100-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-103-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-106-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-110-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-113-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-116-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-119-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-122-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-125-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB
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memory/3644-130-0x0000000000400000-0x00000000006EC000-memory.dmpFilesize
2.9MB