Analysis
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max time kernel
148s -
max time network
151s -
platform
windows11-21h2_x64 -
resource
win11-20240214-en -
resource tags
arch:x64arch:x86image:win11-20240214-enlocale:en-usos:windows11-21h2-x64system -
submitted
24/03/2024, 15:56
Static task
static1
Behavioral task
behavioral1
Sample
ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe
Resource
win10v2004-20240226-en
Behavioral task
behavioral2
Sample
ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe
Resource
win11-20240214-en
General
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Target
ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe
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Size
2.0MB
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MD5
8c1c13798323be32ba6179cf4bc9f6be
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SHA1
0f6f8e59853de96dd56186cb65179351b29610bd
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SHA256
ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4
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SHA512
ab743ce8f676d2c91ae11a3c65a5b0bebbe011a0b6756bfc7bb6c1ab9c77e12a7a89e98d3c8719d9664e0c26f482303aaa299fd799e92dd7b9e5916de60908f5
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SSDEEP
49152:32RULX7V6s/3heWFjK7feeAsCF3xp7OQRj7G9V//ZPjaI:mmLX7os/heWpK7pgpZRj7GzJPjaI
Malware Config
Extracted
socks5systemz
http://csexuke.net/search/?q=67e28dd83a58f22a160bab1e7c27d78406abdd88be4b12ebb517aa5c96bd86ed82df14d714bca5817673aa4ce8889b5e4fa9281ae978a071ea771795af8e05c642db22f31dfe339426fa12a466c553adb719a9577e55b8603e983a608ffe13c9ea9d9f39
http://csexuke.net/search/?q=67e28dd83a58f22a160bab1e7c27d78406abdd88be4b12eab517aa5c96bd86ef968344815a8bbc896c58e713bc90c91936b5281fc235a925ed3e03d6bd974a95129070b611e96cc92be510b866db51b9e34eed4c2b14a82966836f23d7f210c7ee949832c8679314
Signatures
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Detect Socks5Systemz Payload 5 IoCs
resource yara_rule behavioral2/memory/5084-66-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/5084-70-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/5084-79-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/5084-92-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz behavioral2/memory/5084-93-0x00000000008F0000-0x0000000000992000-memory.dmp family_socks5systemz -
Socks5Systemz
Socks5Systemz is a botnet written in C++.
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Executes dropped EXE 3 IoCs
pid Process 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp 4900 sitefreeedition.exe 5084 sitefreeedition.exe -
Loads dropped DLL 1 IoCs
pid Process 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.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 1676 wrote to memory of 4800 1676 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe 77 PID 1676 wrote to memory of 4800 1676 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe 77 PID 1676 wrote to memory of 4800 1676 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe 77 PID 4800 wrote to memory of 4900 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp 78 PID 4800 wrote to memory of 4900 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp 78 PID 4800 wrote to memory of 4900 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp 78 PID 4800 wrote to memory of 5084 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp 79 PID 4800 wrote to memory of 5084 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp 79 PID 4800 wrote to memory of 5084 4800 ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp 79
Processes
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C:\Users\Admin\AppData\Local\Temp\ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe"C:\Users\Admin\AppData\Local\Temp\ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:1676 -
C:\Users\Admin\AppData\Local\Temp\is-MAPC8.tmp\ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp"C:\Users\Admin\AppData\Local\Temp\is-MAPC8.tmp\ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp" /SL5="$40240,1758683,54272,C:\Users\Admin\AppData\Local\Temp\ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:4800 -
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:4900
-
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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:5084
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2.0MB
MD5dc8aedec9118fcb4ab4f8e50928d9e12
SHA1380cb0b101c8d03ece5f91627cb1ca1cca094a33
SHA25684ac321b081589c308bf974c6193891bb8d61bb933443db676ce92bc6553f453
SHA51201a3c95c264c34c428e210ae1f8d7e26f5a8525b4492c04f912ae0710098581635da0f968ec5a3243364956605b8d2b93bb834b10d554007cc6f1e16c4842931
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Filesize
1.7MB
MD598a88495b41fb36cb986098c0c24bc53
SHA1615f9b740eeece55183018450682abccc613ea5d
SHA256c925bb7a0f99b518b28f6679fe77a5fadb98581f4e041b89e903719b913cb8b8
SHA512d2244fa6d7300d9b586af17f0c0c5849b33c8fbb3a0f6a790bbdba40677964cb26712931c57830c4d95122fc05c09835692813525470703a615b229205e6364b
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Filesize
1.2MB
MD5ec6d3ceb3f032a7f26c60deb440e6fe3
SHA14197d59e82032ee35f5123e90a5d296df5e1826f
SHA2569d514014881a2bc7efc62c17a8baa2aa4cbedc534c2b58cfafc44340ad205d2d
SHA512c326f97bdea8cd416a38b55d53d175d22cef672cf3af33ce0f4aff883dcbeca205f3e81da9f7ebf2ee564bbe4a97e2ebf1598f33c41ad10961966a24e67aa684
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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C:\Users\Admin\AppData\Local\Temp\is-MAPC8.tmp\ec23819b3f561cd470f58ff604599056750fe19acf293f3e7ec5e04de67055c4.tmp
Filesize677KB
MD55a1e3d46cb5a24f8e50b2a59d2ba1cf3
SHA1fe86894c4757c144449bc744649b7fb9e03346f1
SHA256d3a2c2ce7d70b3b9c30faf3f72bf4ebcdea8f331d6b6cac5dae906327997985d
SHA512a27dc5c443abb31826b14e514aa717be5bf0f548b82170f79705f45ca28abaedc485c5b8738044735f61eca9e1f0ca659b519a3947551404085d07202ae709af