Analysis
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max time kernel
147s -
max time network
150s -
platform
windows11-21h2_x64 -
resource
win11-20240730-en -
resource tags
arch:x64arch:x86image:win11-20240730-enlocale:en-usos:windows11-21h2-x64system -
submitted
02/08/2024, 13:54
Static task
static1
Behavioral task
behavioral1
Sample
0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe
Resource
win10v2004-20240730-en
Behavioral task
behavioral2
Sample
0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe
Resource
win11-20240730-en
General
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Target
0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe
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Size
3.9MB
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MD5
4205a5ee0fe64320465bc614e61cbc47
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SHA1
576ad1914f3faed1990058c3e36260a2c952871e
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SHA256
0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca
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SHA512
5a6af616255e92b86a7d86421cdcadb09b80840442b34e2932961742f8258815a4f2274d7e940f6f6d7397eb0a0b6dd16b49b291fb52a67a4cd858aa4d590a8e
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SSDEEP
98304:NFCS06WwrhQyLEhHWH/jUqD1pU/e5YJdpLxgzrd4:zfdWwHExkjUK1+/skpFmW
Malware Config
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral2/memory/2268-77-0x0000000000B70000-0x0000000000C12000-memory.dmp family_socks5systemz behavioral2/memory/2268-103-0x0000000000B70000-0x0000000000C12000-memory.dmp family_socks5systemz behavioral2/memory/2268-104-0x0000000000B70000-0x0000000000C12000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 2532 ac3filter32.exe 2268 ac3filter32.exe -
Loads dropped DLL 1 IoCs
pid Process 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp -
Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 141.98.234.31 -
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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System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ac3filter32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language ac3filter32.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp -
Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 3692 wrote to memory of 4212 3692 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe 79 PID 3692 wrote to memory of 4212 3692 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe 79 PID 3692 wrote to memory of 4212 3692 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe 79 PID 4212 wrote to memory of 2532 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 80 PID 4212 wrote to memory of 2532 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 80 PID 4212 wrote to memory of 2532 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 80 PID 4212 wrote to memory of 2268 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 81 PID 4212 wrote to memory of 2268 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 81 PID 4212 wrote to memory of 2268 4212 0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp 81
Processes
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C:\Users\Admin\AppData\Local\Temp\0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe"C:\Users\Admin\AppData\Local\Temp\0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3692 -
C:\Users\Admin\AppData\Local\Temp\is-BL65L.tmp\0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp"C:\Users\Admin\AppData\Local\Temp\is-BL65L.tmp\0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp" /SL5="$C0206,3868084,54272,C:\Users\Admin\AppData\Local\Temp\0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4212 -
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2532
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C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2268
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
4.4MB
MD5cb679e0b550b3fdd8e510047e254a661
SHA1d5625c912195642f80851fad83aa9b883ecafd5c
SHA2565cfd9ac97432cb1bb64803749f842ecc421b8114125672a64c0d91f2943d82e0
SHA512bf6345aa08e8e19dddd6b56d4c498f4337284537a4d18c54f105ae34716d6e5f1167288111a240d7c2e7f22d3b9aba5d861ce0e9806666f1f2660381a79693d5
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-BL65L.tmp\0b4c8d5b4c4506c0c43d974ca5ccb59942db38a629342e650d7e3f89d1ea9dca.tmp
Filesize692KB
MD55ebe11e6392fab730e54dcb5c25aa498
SHA177d0199f1952ba98dc140c568ed0961dec98e77a
SHA256dca15a70be4ddce976a38be4a643336de4a55a4156c33726da14d1108393171f
SHA5120d81221530d7fa78a59abcb43784f1be39102da72d320ce97c6f56416d5f41bcf902f7bb2df93278d51125caaf6336cf8bd2dbfd9cdf9cb973e4d13c148d82e4