Analysis
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max time kernel
141s -
max time network
142s -
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, 18:42
Static task
static1
Behavioral task
behavioral1
Sample
01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe
Resource
win10v2004-20231215-en
Behavioral task
behavioral2
Sample
01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe
Resource
win11-20240221-en
General
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Target
01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe
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Size
2.0MB
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MD5
2bf527f3af542725d6d7aa0891136a22
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SHA1
7db81c09e86e755642472c347e94cb95b4a62643
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SHA256
01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77
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SHA512
f6125c68f2a85ca4f832437a5751f367bd3859d8924350623589afaa14d041f52d57247d74957d9a53fa82f502bcf5163b7356d3611889c4675b6b10680dcab6
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SSDEEP
49152:32g1KvY8oHbk2HcrT/gwEbtsQeYiOIzU1OjkbXXuct9fIdcMDgz5I:mg1KvYFw/gwE5+DOIAsjkbOctBIdcMDH
Malware Config
Extracted
socks5systemz
http://bguarxw.com/search/?q=67e28dd83d0ef479150af9197c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4be8889b5e4fa9281ae978a571ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe12c0ea9d983a
http://bguarxw.com/search/?q=67e28dd83d0ef479150af9197c27d78406abdd88be4b12eab517aa5c96bd86e996834d96148ab2865b77f80ebad9c30f7cb63037ed2ab423a4604383ba915d911ec07bb106a0708727e40ea678c751bbe34efb0e2807e12571c17f3e83fe16c1ee969a3ec56d97
Signatures
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Detect Socks5Systemz Payload 5 IoCs
resource yara_rule behavioral2/memory/4440-64-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/4440-68-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/4440-77-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/4440-90-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/4440-91-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp 3984 sitefreeedition.exe 4440 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.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 3604 wrote to memory of 564 3604 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe 76 PID 3604 wrote to memory of 564 3604 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe 76 PID 3604 wrote to memory of 564 3604 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe 76 PID 564 wrote to memory of 3984 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp 77 PID 564 wrote to memory of 3984 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp 77 PID 564 wrote to memory of 3984 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp 77 PID 564 wrote to memory of 4440 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp 78 PID 564 wrote to memory of 4440 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp 78 PID 564 wrote to memory of 4440 564 01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp 78
Processes
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C:\Users\Admin\AppData\Local\Temp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe"C:\Users\Admin\AppData\Local\Temp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:3604 -
C:\Users\Admin\AppData\Local\Temp\is-R2IRN.tmp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp"C:\Users\Admin\AppData\Local\Temp\is-R2IRN.tmp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp" /SL5="$50208,1762749,54272,C:\Users\Admin\AppData\Local\Temp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:564 -
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:3984
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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:4440
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
448KB
MD5a627dbe5b2a5925605cc8ee498e44511
SHA14e266bbe66e9cff006d810266843f739ac1b7138
SHA2561f4bedbe1fc869177968430331ea29836770463da7665f085f40f47eb3e3a5a1
SHA512a19e21c43996180933bf1a1eac42a4da9b7f59027b2f2f48d07e77509ac7a60c0a7b6165a16d1cff356947ebda55ef9feb237bbd3257596100ed0d4caf977a35
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Filesize
2.0MB
MD560f9c5a74ac1ec0aec4e4b4a4d139486
SHA1cfdaace9ecd3a8ad68af2d3758fa53d1de39d0df
SHA256e5f000773b88a971d8039e00957cad8fabef01bf3db09b2f151cdf5d43576d84
SHA51250594bb2c97cb439c3ba75880f4005dbf034eafbb16fcd58a218969b443ddcb512ec83e8619c2ba6d35b580f0df82085a055daf19192b985c594ebc69a2fc965
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-R2IRN.tmp\01781dde8e2b2ad5eea14fb491b32ec0a6a347fac2c2f47f7b5d550a9c52df77.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af