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Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
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submitted
11/12/2023, 15:51
General
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Target
tuc4.exe
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Size
6.9MB
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MD5
8414fe2ac1247650f33d24c59a1e810c
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SHA1
85efb140e6a8ea7d5de2d66f6e48423e52253154
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SHA256
85d5367d4e844cbd05e5d81acdddabe8b43227d29fe92848d01562786289cf1f
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SHA512
9bf0bdaeb30d2b5d398ba143f91bafc0d6835281119a14cec9d23c9096a0692c1bfca4c32ff05946e977787eade74cc3471e5f49878971a46ce39fde3d6f8de8
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SSDEEP
196608:RDoG3bFqjpLC0TSMLsn33HR83v9i8l7INzj:RDyNLCWZ2HS9iQ7INzj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
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Loads dropped DLL 6 IoCs
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Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
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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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Drops file in Program Files directory 63 IoCs
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Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
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Suspicious use of WriteProcessMemory 27 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\tuc4.exe"C:\Users\Admin\AppData\Local\Temp\tuc4.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-67NEJ.tmp\tuc4.tmp"C:\Users\Admin\AppData\Local\Temp\is-67NEJ.tmp\tuc4.tmp" /SL5="$80130,6971036,68096,C:\Users\Admin\AppData\Local\Temp\tuc4.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵
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C:\Program Files (x86)\ConvertWMA\wmaconvert.exe"C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i3⤵
- Executes dropped EXE
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C:\Program Files (x86)\ConvertWMA\wmaconvert.exe"C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s3⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 113⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 114⤵
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
416KB
MD5a7b6dd39f97222a492ccf52f5ce589eb
SHA141cec71a7d8bb6a885a08c1c7bc8b35709b054a2
SHA256e10fdffb24738627d104be33268f94d93b34a5d019795cdedf7c0fa21ac922f8
SHA512a169836d9778a1f9be23e6165c718a4546fb4e910ff763abb5e0e43f2f4a1ed34ac1ee4414b16db4d0831666dc8d8fd850271d750099710595078d98e42159eb
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Filesize
321KB
MD5d8e0ba2f9edf348fa22d327495d1f4c8
SHA128fda3e6eabbf23cd53b964ef81f82a97ba8e639
SHA256ec0afefc7abcb405294a7386a955370bef7db44118acbfffe2dff149376cd8e5
SHA51212b2b8a4a74b99c82bbf7e5976f38a6a2622a9ef42b85c5e3be3cf60f4e8cbcdfa440f8c84906666effe0195cff7eda1e008dd466991d5a81b92a2b65038c920
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Filesize
299KB
MD5478913325f7d7a3de40d01ec0814935b
SHA1d595fee3280c505ca62dfe4fbd43fa79ad682bbd
SHA256bc5d84330d810f5e27f1e039c5493e3084fcf11748e3990f79960b052abb0352
SHA512e089daaf1767ff42b974f87116a1dab395468330c26e0e91e557b70a9469a5f2e153ed203d502251ffd205c8f788f138a31bffd751f5be3cd5763a7ca74bb81b
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Filesize
797KB
MD5474336330a3ff8ad226fae5dbbbeaa8b
SHA1ff72a33559d8363af502cce81beff33f90ac0a66
SHA256c91c75d5e954ba1e0e70d10a1d4d1f48839394144e40c9d448bc99d972825474
SHA512eb286c12810c7b7b3cf1c902766866f1143939012c69a6b10117a7b5f71dc5afabb19573ac7e880a9817e06f149e6c3f4e2df457fafae3938ea323eec9c58407
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Filesize
687KB
MD5f448d7f4b76e5c9c3a4eaff16a8b9b73
SHA131808f1ffa84c954376975b7cdb0007e6b762488
SHA2567233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49
SHA512f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
19KB
MD53adaa386b671c2df3bae5b39dc093008
SHA1067cf95fbdb922d81db58432c46930f86d23dded
SHA25671cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38
SHA512bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303
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Filesize
22KB
MD592dc6ef532fbb4a5c3201469a5b5eb63
SHA13e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA2569884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
SHA5129908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
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Filesize
1.8MB
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Filesize
632KB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
632KB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
96KB
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Filesize
96KB
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Filesize
4KB
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Filesize
752KB
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Filesize
1.8MB
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Filesize
4KB