Analysis
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max time kernel
169s -
max time network
159s -
platform
windows11-21h2_x64 -
resource
win11-20240221-en -
resource tags
arch:x64arch:x86image:win11-20240221-enlocale:en-usos:windows11-21h2-x64system -
submitted
24/03/2024, 18:44
Static task
static1
Behavioral task
behavioral1
Sample
835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe
Resource
win11-20240221-en
General
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Target
835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe
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Size
2.0MB
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MD5
18cd6d6cbd528a40637527c4ad877ec2
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SHA1
6c7c7924c4d3302e9bc216d631f2834ad304a64e
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SHA256
835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2
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SHA512
c2cd03eb3e894464ee9474c25053165327fa8a4389897259eee02f4446b77bab2bdabe35ea338176fb88df4c625bcb3e00d0d8fab61c7876ca5c5986171303ce
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SSDEEP
49152:32uzUgsg/9ncv65k7C/FONspKiFiY83sMp5JtHtI:mOUkncv4kZiMeMpTxtI
Malware Config
Extracted
socks5systemz
http://bbgbauc.com/search/?q=67e28dd86f58a021415baa1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4fe8889b5e4fa9281ae978a471ea771795af8e05c645db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe12c0ea9c9f3d
Signatures
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Detect Socks5Systemz Payload 3 IoCs
resource yara_rule behavioral2/memory/4684-69-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/4684-68-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/4684-80-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp 5044 sitefreeedition.exe 4684 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.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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Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 9 IoCs
description pid Process procid_target PID 800 wrote to memory of 1312 800 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe 78 PID 800 wrote to memory of 1312 800 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe 78 PID 800 wrote to memory of 1312 800 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe 78 PID 1312 wrote to memory of 5044 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp 80 PID 1312 wrote to memory of 5044 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp 80 PID 1312 wrote to memory of 5044 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp 80 PID 1312 wrote to memory of 4684 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp 81 PID 1312 wrote to memory of 4684 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp 81 PID 1312 wrote to memory of 4684 1312 835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp 81
Processes
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C:\Users\Admin\AppData\Local\Temp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe"C:\Users\Admin\AppData\Local\Temp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:800 -
C:\Users\Admin\AppData\Local\Temp\is-SJ1BI.tmp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp"C:\Users\Admin\AppData\Local\Temp\is-SJ1BI.tmp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp" /SL5="$5022C,1724921,54272,C:\Users\Admin\AppData\Local\Temp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1312 -
C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -i3⤵
- Executes dropped EXE
PID:5044
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C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe"C:\Users\Admin\AppData\Local\Site Free Edition\sitefreeedition.exe" -s3⤵
- Executes dropped EXE
PID:4684
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
755KB
MD536c99aef68d3cdd2c45103c8de31c369
SHA1df14c8a3704188057d84db938edaba542f7aaa18
SHA256f4f9b5cd51d9c70a25c635df492dce366440c404bec55be72154d6f51138885a
SHA512e7d4a551c2f66ca7150927cc7bfdf12d4ba9a5cc6706baccc5997f29b27b3a9c65fe5d5c833d6b3e7f4fea8f6b1369556aee819ebd87bd5b57a7300b906327c6
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Filesize
2.0MB
MD586af76d95c85dd2d7e313d735d0b4819
SHA1ecccf9828e5647c549e22eb7ebeaec89f7c0f36f
SHA256d3a3ebb4b3958512f7682ff3c8840347a2e5f909a92f08d3b1bc79a98e9ffdd6
SHA5125d632c7ab99ce586ef633760369731f791e2c0364b415928cbf381e9abdcd65b905d1d1d40af33fec799cc5843b8ac4167d6b326fcf5379b5ad1a12414cd7c31
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-SJ1BI.tmp\835ee3b9df1576b84615cc0bf06a533e34f1ea431b2ac3d600bef751e68c34d2.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af