Analysis
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max time kernel
143s -
max time network
126s -
platform
windows10-2004_x64 -
resource
win10v2004-20240611-en -
resource tags
arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system -
submitted
15-06-2024 03:04
Static task
static1
Behavioral task
behavioral1
Sample
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe
Resource
win7-20240611-en
Behavioral task
behavioral2
Sample
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe
Resource
win10v2004-20240611-en
General
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Target
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe
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Size
5.0MB
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MD5
f208ef093a844345efcc4743c3e6fbf4
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SHA1
a0080b969c5e7d8a9b81f1bb4e9709fd3f554f78
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SHA256
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91
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SHA512
7a5fa92124b91d985fbaca1efd93a9061849c40c10b4ca099d9d4fdba1b5f84e1af5f7575999244bc7bd76518dc814bbec27f6be9f89adc8ff025aef3461f87b
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SSDEEP
98304:mOQLtBtY8s/NrjJ4yV10HkYWQrXJ7Y1oe8Bwx90DYu0N:pitBhk9jiG0HkYWmXJE1iBwv0Dk
Malware Config
Extracted
socks5systemz
bfumcmw.com
http://bfumcmw.com/search/?q=67e28dd83e0bfb2e455aa5187c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ae8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa11af66c152adb719a9577e55b8603e983a608ff715c2ef929e3a
Signatures
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Detect Socks5Systemz Payload 1 IoCs
Processes:
resource yara_rule behavioral2/memory/4508-86-0x0000000002940000-0x00000000029E2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmpmoonvoiceassist32.exemoonvoiceassist32.exepid process 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp 1488 moonvoiceassist32.exe 4508 moonvoiceassist32.exe -
Loads dropped DLL 1 IoCs
Processes:
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmppid process 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.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 45.155.250.90 -
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:
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmppid process 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exee5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmpdescription pid process target process PID 3128 wrote to memory of 3468 3128 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp PID 3128 wrote to memory of 3468 3128 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp PID 3128 wrote to memory of 3468 3128 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp PID 3468 wrote to memory of 1488 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp moonvoiceassist32.exe PID 3468 wrote to memory of 1488 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp moonvoiceassist32.exe PID 3468 wrote to memory of 1488 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp moonvoiceassist32.exe PID 3468 wrote to memory of 4508 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp moonvoiceassist32.exe PID 3468 wrote to memory of 4508 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp moonvoiceassist32.exe PID 3468 wrote to memory of 4508 3468 e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp moonvoiceassist32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe"C:\Users\Admin\AppData\Local\Temp\e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-5DC0Q.tmp\e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp"C:\Users\Admin\AppData\Local\Temp\is-5DC0Q.tmp\e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmp" /SL5="$501D4,5014292,54272,C:\Users\Admin\AppData\Local\Temp\e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.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\Moon Voice Assist\moonvoiceassist32.exe"C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe" -i3⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.exe"C:\Users\Admin\AppData\Local\Moon Voice Assist\moonvoiceassist32.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\Moon Voice Assist\moonvoiceassist32.exeFilesize
3.2MB
MD5abb7f7b13042d5c7ce643e7cdf0a7a60
SHA18b7910bf714762ef08da71af88191bc9685afafe
SHA256e7ea4d1b1288b14204fb369fa5a1750de2722f61acea0c3bbbff3a38b7eb6e31
SHA512e3163e932bc70b5377b5c33949aeaa396f1d2215af276a025d4a7439c5ec9564034a5d9322f2c7765e16067232da791ccda0202c75c439e63371669b0354ce36
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C:\Users\Admin\AppData\Local\Temp\is-1687P.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-5DC0Q.tmp\e5bcefbc1c97efff5ea035c906409d4d5b8bd4ac4e015e252532d634c05d9f91.tmpFilesize
680KB
MD5b69bf30e5f252cfcf7d82c84f8374a82
SHA14730c8a8a06df84e640f6ebc2aaa6f1236405f04
SHA256d84b7d9a290803b0f334562ef81c1048c271d37fb9bc2d819fce473f26cb364b
SHA512278be468edc57b6774c81755b8334eb9084eb683eeedc7d7537e6b6fdc2c104ba5392e98853dcd4e8ae052e7ca92a880b34b10c46096cfc2bc5034a15e46e52a
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memory/1488-59-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/1488-60-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/1488-65-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/1488-64-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/3128-3-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/3128-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3128-69-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3468-70-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/3468-10-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/4508-74-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-88-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-68-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-77-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-80-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-83-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-86-0x0000000002940000-0x00000000029E2000-memory.dmpFilesize
648KB
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memory/4508-71-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-93-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-96-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-99-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-102-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-105-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-108-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-111-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB
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memory/4508-114-0x0000000000400000-0x000000000073D000-memory.dmpFilesize
3.2MB