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Analysis
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max time kernel
146s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
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submitted
11/12/2023, 15:23
General
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Target
tuc4.exe
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Size
6.9MB
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MD5
ab5ad39df89fbe36d1576f5390b91ae8
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SHA1
447e7bbd0e6a7ebfda7cf97638a8e9f619eb7aed
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SHA256
df1ae754a17b41be925a9135f43e53225687b04210872d4919305460dc6c52b1
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SHA512
fda8d229f686529bb3761b5e3263535b94d8ff548730c315d319947d24bfb717994dc37c66f64159aae6a545b8763f339b73d54a49734779656784f18143586b
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SSDEEP
196608:yDoG3bFqjpLC0TSMLsn33HR83v9i8l7INzj:yDyNLCWZ2HS9iQ7INzj
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 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 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-5GENM.tmp\tuc4.tmp"C:\Users\Admin\AppData\Local\Temp\is-5GENM.tmp\tuc4.tmp" /SL5="$50066,6971036,68096,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
MD53e7bcf9049fd064eb9545287239db693
SHA119b3c78d9ccab3b930f219c08dd910f72023ddb1
SHA2564fde2a43d6c6fe00e5edc8e8fd36cf2dacb068b289a5d9923b6ac50be91bb3ef
SHA5129fcd07c7098810d8021bb290a012afd3fe1d56f7ab6d4f86f81aa06aaa3960510ba95a6c5b76520559a5ab03335c245a5b04faf69d74816097d6675a4e8556a6
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Filesize
1.6MB
MD52dfb496015457973a2bfb2a71179a91a
SHA19ef3fd3c21e30ea4df5059ae2189d1cc8b9290d3
SHA2564c5f240515110293fb86335101c273a67015eaf142d849194f0b27878bd61970
SHA512368c123a957d1bcd5289a69daa28cb31a622383e66b65688b8319952f27578291fba3995f3c325830a614817989d917b69b11224220f1f9034197e486cbe3b2e
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Filesize
1.5MB
MD5fd1ef9f01150311f694d4cc1cd4b9573
SHA12b12b201aeb6537acf64d47cf814ba088a1eb6f9
SHA256f5d85c67a8b76b313e9d8b2605e8b5290af5d0c3d3dc2ac109b0da071356e493
SHA51202f2e30a9741766dc3c4da5751de0813b943931ec865d67c6dc838a63160793f28b2bb9151b64066e13cbddb546319030d5f067d8a61e27174a7950069e60c61
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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
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
-
Filesize
1.8MB
-
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