Analysis
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max time kernel
148s -
max time network
136s -
platform
windows7_x64 -
resource
win7-20231025-en -
resource tags
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submitted
11-12-2023 14:19
General
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Target
tuc3.exe
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Size
6.9MB
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MD5
bc6a11ebae4eb15aede360e739918171
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SHA1
c0d0d4d9431ab86f7195fae408fe64b3257d756a
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SHA256
b477465132c46a8a43fe905db9849e44996cdb8e349e68c92169fcc55aac1495
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SHA512
ae721a0c45189665643fb40a87957acf229bd8976ebad9877b7db9c0a9f23431f34a40df50c1a102c821969dab978796aa1fdf00d629c86a8c1cc20d95bb65ac
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SSDEEP
196608:HW0fKLtr95HARqIrmVY8S50UL8Kj8yTwHvWY3Nzj:HtO/hAPmVNyEWeNzj
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 1 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\tuc3.exe"C:\Users\Admin\AppData\Local\Temp\tuc3.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-B1VCI.tmp\tuc3.tmp"C:\Users\Admin\AppData\Local\Temp\is-B1VCI.tmp\tuc3.tmp" /SL5="$3014E,6973457,68096,C:\Users\Admin\AppData\Local\Temp\tuc3.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
884KB
MD584c40edad01061540989c7fd9dcf3916
SHA1f11f81e446f2245d933d4791d88fb7f110b56f2f
SHA256461015ee669604409e424b3c0947c32292453b30e5c0cf7b0b2976a03856e715
SHA512106879bc8417548e6f926203011a045bc1f2e22430ac493ebaf22e986eb5f9db5ecb1e050ed847bc9302149eec0b5469cab1e85ef2f5225209511ba80e0a738b
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Filesize
299KB
MD575fdb02e27b94ef8ebccca38fbdaad49
SHA127003ba5489aa5dc944eb976f0bc8c334a414c90
SHA256e0c772deff4d7f0ea14fef831b3ec501f20b884b07b47da2f95d74997dd8c7e0
SHA5126edfb356f0c3d5ff724f0a6da9a4f3e519b6a2342f47f0a86f343ed05eb94c4dda5aad49e16a30e63203616deda1b0be02c87396e78844bfec3eaa6027350961
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Filesize
687KB
MD5f448d7f4b76e5c9c3a4eaff16a8b9b73
SHA131808f1ffa84c954376975b7cdb0007e6b762488
SHA2567233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49
SHA512f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4
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Filesize
1.8MB
MD511793f6b69b2df9823a26f0356c191da
SHA1ee7d551f6bcdd993f338a73fbef8e4f2a7e072fd
SHA256ee80b4359afed08948ef90984bb846e18ef2ba254253322d6a7d64b60654fb3a
SHA512c482e23f88615c1ca6b44a097c909ccf763f1158c9bd1a8689c1a6590cbc2717f3dd0173a14b582076fe57d00ab50e900caae650a0f6f90d917215a843473b3d
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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
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
-
Filesize
1.8MB
-
Filesize
1.8MB
-
Filesize
1.8MB
-
Filesize
1.8MB
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Filesize
1.8MB
-
Filesize
1.8MB
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Filesize
1.8MB
-
Filesize
1.8MB
-
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
632KB
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Filesize
1.8MB
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Filesize
632KB
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Filesize
632KB
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Filesize
96KB
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Filesize
96KB
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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
4KB
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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