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Analysis
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max time kernel
149s -
max time network
154s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-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 3 IoCs
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Unexpected DNS network traffic destination 2 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 18 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\tuc4.exe"C:\Users\Admin\AppData\Local\Temp\tuc4.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-DU59T.tmp\tuc4.tmp"C:\Users\Admin\AppData\Local\Temp\is-DU59T.tmp\tuc4.tmp" /SL5="$D005C,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
1.8MB
MD59810b60c49cadedbd695bf93043e605d
SHA1a0854d5cabc61d346d4d5e63c69db0624e841f4e
SHA256f2db4b1f32427bac368e6107689ed91b415a6fb7704eefc0977cbbb083fca60c
SHA5122b98cac6609a3a708c43a596c836901b6133c7f187e36367cc58cd9e11f5874de113a9bd8a71d710d57f26a840cf52402b5bfa020c6d543c0171d14858695fe7
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Filesize
1.6MB
MD5b106c8f4dca680c17cd51f60c764c863
SHA19083cbad4e61f9e58712da82fc8c1b3a0f2404e1
SHA256ba08454ecf9f1169ba5515968df3a8344c69cf4bbc466f6bff2b4ac90945c692
SHA512971b872a1270c766767a2bdb3ede8eb7f65d03a5cf5d3046db87f335c3b738e61cac579bb35c37ef75ac04e722ddd89ffb96f34925d5fee9fc767486e29bef87
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Filesize
534KB
MD50db1e6394f3f21a539bf72510efd3f38
SHA154ac676a568d6a56e218cc07e188bff6a5120089
SHA256335c11e35ee5b30656813598af0092d0cec330b7d6ed38ae37373344d4b08e49
SHA512acb1e855ae246c11ce02f937186820d7238c79dc7f858b0d95bee72076e167730d36371f128567a776b34d57ca45937d2baf79fe3448da01dee8bab94f4b79dc
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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
687KB
MD5f448d7f4b76e5c9c3a4eaff16a8b9b73
SHA131808f1ffa84c954376975b7cdb0007e6b762488
SHA2567233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49
SHA512f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4
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Filesize
96KB
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Filesize
96KB
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Filesize
96KB
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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
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
4KB
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Filesize
4KB
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Filesize
752KB