Analysis
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max time kernel
122s -
max time network
127s -
platform
windows11-21h2_x64 -
resource
win11-20240426-en -
resource tags
arch:x64arch:x86image:win11-20240426-enlocale:en-usos:windows11-21h2-x64system -
submitted
09-06-2024 02:03
Static task
static1
Behavioral task
behavioral1
Sample
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe
Resource
win10v2004-20240426-en
Behavioral task
behavioral2
Sample
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe
Resource
win11-20240426-en
General
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Target
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe
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Size
4.7MB
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MD5
d2f16131d658784ee0234daef80a4893
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SHA1
61aef10c8d42c677a2ec8e93ac3326ef3891bb0d
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SHA256
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b
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SHA512
ad79f1d21040b4e03044e7374662cefdb4bebc15df3a3a9544ac06eab20b25fbb659993b5a8225d63eae50819ab22eec88ff70edba9533f8bd11ad55fee42bce
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SSDEEP
98304:mLdFZY+c+ESBPrIZIluqbcl94xpFi22z+W8D6G6jgslLZH1j6:SFBEeUSluqbclSs2U7Uuj3FZ0
Malware Config
Extracted
socks5systemz
bbwbokn.com
http://bbwbokn.com/search/?q=67e28dd83d5fa77a480faf1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4de8889b5e4fa9281ae978f171ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ff819c9e793923e
http://bbwbokn.com/search/?q=67e28dd83d5fa77a480faf1e7c27d78406abdd88be4b12eab517aa5c96bd86e4928e4a96148ab2865b77f80ebad9c50f7cb63037ed2ab423a4344383ba915d911ec07bb606a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1e89d9333cb6793
Signatures
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Detect Socks5Systemz Payload 3 IoCs
Processes:
resource yara_rule behavioral2/memory/3900-87-0x0000000002800000-0x00000000028A2000-memory.dmp family_socks5systemz behavioral2/memory/3900-113-0x0000000002800000-0x00000000028A2000-memory.dmp family_socks5systemz behavioral2/memory/3900-112-0x0000000002800000-0x00000000028A2000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
Processes:
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmplesserextent32.exelesserextent32.exepid process 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp 2004 lesserextent32.exe 3900 lesserextent32.exe -
Loads dropped DLL 1 IoCs
Processes:
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmppid process 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.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:
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmppid process 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
Processes:
e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exee250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmpdescription pid process target process PID 2948 wrote to memory of 3364 2948 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp PID 2948 wrote to memory of 3364 2948 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp PID 2948 wrote to memory of 3364 2948 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp PID 3364 wrote to memory of 2004 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp lesserextent32.exe PID 3364 wrote to memory of 2004 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp lesserextent32.exe PID 3364 wrote to memory of 2004 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp lesserextent32.exe PID 3364 wrote to memory of 3900 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp lesserextent32.exe PID 3364 wrote to memory of 3900 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp lesserextent32.exe PID 3364 wrote to memory of 3900 3364 e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp lesserextent32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe"C:\Users\Admin\AppData\Local\Temp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2948 -
C:\Users\Admin\AppData\Local\Temp\is-GIRTC.tmp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp"C:\Users\Admin\AppData\Local\Temp\is-GIRTC.tmp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmp" /SL5="$4023C,4666921,54272,C:\Users\Admin\AppData\Local\Temp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3364 -
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -i3⤵
- Executes dropped EXE
PID:2004 -
C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe"C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exe" -s3⤵
- Executes dropped EXE
PID:3900
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Lesser Extent\lesserextent32.exeFilesize
2.8MB
MD5eb006d9f9056a10d7041b60c92d5748d
SHA1fb3d1c69f0ab0e80a6b1453e3b959ed6a93eab07
SHA25670714c41c7687e2e864ef98dc47829bbb765a370ce07c4ef45ef7032c6ed241a
SHA51226194cca01da8b17ae81996d84b572d602ba64d4de8225c47be5cc9795c4f43b73d04ee5aa6ff2233a4c9d9e21c2930e97633a67a622a9ad9d03f9bfd87f5d8f
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C:\Users\Admin\AppData\Local\Temp\is-EVC4V.tmp\_isetup\_iscrypt.dllFilesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-GIRTC.tmp\e250e4bfdd5a58be90228eb5b2b4fb0f4686a36b433b130cbe50a4008a874c8b.tmpFilesize
680KB
MD5dff4f58a01a8e88e4a2f821ca761d901
SHA1e67e24669220213f895b68c0d662b02b03469b4a
SHA25691b049634c65dbe18368e1f2ead4ae48f62b92fdfcd119ccea0919b68bf56e76
SHA512049cebaa8bc30f2b7b90a49f6022271247fab2a3bc0fd2e9f36d1f27e0c37926f00deedd92b5d85a8b34f2f6e9b59ee3b7e12510cfa720935a86ba820132817a
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memory/2004-59-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/2004-60-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/2004-65-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/2004-64-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/2948-70-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/2948-2-0x0000000000401000-0x000000000040B000-memory.dmpFilesize
40KB
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memory/2948-0-0x0000000000400000-0x0000000000414000-memory.dmpFilesize
80KB
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memory/3364-10-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/3364-71-0x0000000000400000-0x00000000004BA000-memory.dmpFilesize
744KB
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memory/3900-76-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-87-0x0000000002800000-0x00000000028A2000-memory.dmpFilesize
648KB
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memory/3900-72-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-75-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-68-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-79-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-82-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-85-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-91-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-69-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-96-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-99-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-102-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-105-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-108-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-111-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-113-0x0000000002800000-0x00000000028A2000-memory.dmpFilesize
648KB
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memory/3900-112-0x0000000002800000-0x00000000028A2000-memory.dmpFilesize
648KB
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memory/3900-117-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB
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memory/3900-120-0x0000000000400000-0x00000000006C4000-memory.dmpFilesize
2.8MB