Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231130-en -
resource tags
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submitted
11/12/2023, 14:07
General
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Target
tuc4.exe
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Size
6.9MB
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MD5
4424227c4367945ea86fab9667d5c19e
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SHA1
f0dcf369946f8b922423b0f3f3501ab1d19fcc5a
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SHA256
6583c5dc72b8b76791d4f75dab0b4cbe0aa4da38c27506f827c341192f1da75a
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SHA512
a11f3db84ddae449f4d6b371110813bd2463f24ed47d532c14aa1d277275570dfc31654e414c3184c283d4a13f4cf179a5b9a2c318d82db103451b984c1f014d
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SSDEEP
196608:cDoG3bFqjpLC0TSMLsn33HR83v9i8l7INzj:cDyNLCWZ2HS9iQ7INzj
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-UF91A.tmp\tuc4.tmp"C:\Users\Admin\AppData\Local\Temp\is-UF91A.tmp\tuc4.tmp" /SL5="$40026,6971036,68096,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
780KB
MD524fe9a5b34fb5991e4faf018465e7008
SHA11a455690f5292d73e21ef117aa702aaa87a8dddb
SHA256a085b473d025cc30dafd48ea42279261c146e99deb77d571d0ff84bf7a422d76
SHA5121ad4f82006b6e1e495852e2e862e323c185304190ecfac62269344f50fd1d47defdaaa35bd905e853eb97a9c241e668e1ce8b365cf440202b104e5d05601d9b4
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Filesize
170KB
MD5fd4b91e60027c359265a723b5be48d56
SHA1fc0ee5d5cb2cc607c5100ed0122ce975ac33b0a3
SHA256adb99a655e313c09af5e94f1db78818350d1211af45108ff9e1eb01889bc0da6
SHA5128d011fe8944f91fdd74b3e739b707c164a6a4dedad9d3230add9a8ccce4d76dcd1ec3522467c4ec3e50c44766abca675808c32eb7440d57444ca7dd8359f4ee8
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Filesize
1.8MB
MD59810b60c49cadedbd695bf93043e605d
SHA1a0854d5cabc61d346d4d5e63c69db0624e841f4e
SHA256f2db4b1f32427bac368e6107689ed91b415a6fb7704eefc0977cbbb083fca60c
SHA5122b98cac6609a3a708c43a596c836901b6133c7f187e36367cc58cd9e11f5874de113a9bd8a71d710d57f26a840cf52402b5bfa020c6d543c0171d14858695fe7
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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
687KB
MD5f448d7f4b76e5c9c3a4eaff16a8b9b73
SHA131808f1ffa84c954376975b7cdb0007e6b762488
SHA2567233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49
SHA512f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4
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Filesize
4KB
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Filesize
1.8MB
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Filesize
4KB
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Filesize
752KB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
-
Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
-
Filesize
1.8MB
-
Filesize
1.8MB
-
Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
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Filesize
1.8MB
-
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
1.8MB
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Filesize
96KB
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Filesize
96KB