Analysis
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max time kernel
147s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20231130-en -
resource tags
arch:x64arch:x86image:win10v2004-20231130-enlocale:en-usos:windows10-2004-x64system -
submitted
11/12/2023, 14:22
Static task
static1
Behavioral task
behavioral1
Sample
tuc3.exe
Resource
win7-20231023-en
Behavioral task
behavioral2
Sample
tuc3.exe
Resource
win10v2004-20231130-en
General
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Target
tuc3.exe
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Size
6.9MB
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MD5
93a061a4bbab4efd27c7e47d09629eac
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SHA1
3ffbc7263d8039202ea372ad956dd7187e138c56
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SHA256
46ff17be11d368e4fee688bc6fbc6dcd33cf794408d39605cf343556810a9b09
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SHA512
604061374154814aea69bcef4a1e687dd4d152293fd650100d1e6ba297a4796fb019db908e85823b457fdab845fa9117a07942abd85e2e97903bdf68c47e0271
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SSDEEP
196608:gW0fKLtr95HARqIrmVY8S50UL8Kj8yTwHvWY3Nzj:gtO/hAPmVNyEWeNzj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 432 tuc3.tmp 2172 wmaconvert.exe 4188 wmaconvert.exe -
Loads dropped DLL 3 IoCs
pid Process 432 tuc3.tmp 432 tuc3.tmp 432 tuc3.tmp -
Unexpected DNS network traffic destination 3 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
description ioc Destination IP 141.98.234.31 Destination IP 194.49.94.194 Destination IP 152.89.198.214 -
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
description ioc Process File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-6RME7.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-RQ6F1.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-IJDL5.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-JFRD8.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-LODKN.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-6GG0Q.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-2PLV2.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-A7EA2.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-R4T5T.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-01O37.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-2KJKV.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\uninstall\is-58VPB.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-DFRKA.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-L1PUS.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-IL583.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-M7VVI.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-M324S.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-NTC1A.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-L0S2D.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-BTN06.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-R10C2.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-LIT19.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-6J02G.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-19EKP.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-V0FEL.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-P7UUL.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-7NJFC.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\is-6AU3T.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-PIDGV.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-IC2QT.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-SF0F9.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-GEQJS.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-LGC92.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-PQAOE.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-38TE3.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-C24DO.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-66LM1.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-L97D1.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-58N01.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-5ES1M.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-RF4MC.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-O0RDF.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-S07TT.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-BUNE4.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-TUB59.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-JGER6.tmp tuc3.tmp File opened for modification C:\Program Files (x86)\ConvertWMA\wmaconvert.exe tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-QVEB7.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-5BF3Q.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-2MBI2.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-HEERH.tmp tuc3.tmp File opened for modification C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-EM8UP.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-LKIH3.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-OA4PI.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\lessmsi\is-C23O0.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-H4J6D.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-P43JG.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-261S9.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-7U9RD.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-0FD3M.tmp tuc3.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-V2JG2.tmp tuc3.tmp -
Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 432 tuc3.tmp -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 2256 wrote to memory of 432 2256 tuc3.exe 87 PID 2256 wrote to memory of 432 2256 tuc3.exe 87 PID 2256 wrote to memory of 432 2256 tuc3.exe 87 PID 432 wrote to memory of 5092 432 tuc3.tmp 92 PID 432 wrote to memory of 5092 432 tuc3.tmp 92 PID 432 wrote to memory of 5092 432 tuc3.tmp 92 PID 432 wrote to memory of 2172 432 tuc3.tmp 94 PID 432 wrote to memory of 2172 432 tuc3.tmp 94 PID 432 wrote to memory of 2172 432 tuc3.tmp 94 PID 432 wrote to memory of 1240 432 tuc3.tmp 97 PID 432 wrote to memory of 1240 432 tuc3.tmp 97 PID 432 wrote to memory of 1240 432 tuc3.tmp 97 PID 432 wrote to memory of 4188 432 tuc3.tmp 96 PID 432 wrote to memory of 4188 432 tuc3.tmp 96 PID 432 wrote to memory of 4188 432 tuc3.tmp 96 PID 1240 wrote to memory of 3872 1240 net.exe 98 PID 1240 wrote to memory of 3872 1240 net.exe 98 PID 1240 wrote to memory of 3872 1240 net.exe 98
Processes
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C:\Users\Admin\AppData\Local\Temp\tuc3.exe"C:\Users\Admin\AppData\Local\Temp\tuc3.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2256 -
C:\Users\Admin\AppData\Local\Temp\is-H2HDP.tmp\tuc3.tmp"C:\Users\Admin\AppData\Local\Temp\is-H2HDP.tmp\tuc3.tmp" /SL5="$110092,6973457,68096,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
PID:432 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵PID:5092
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C:\Program Files (x86)\ConvertWMA\wmaconvert.exe"C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i3⤵
- Executes dropped EXE
PID:2172
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C:\Program Files (x86)\ConvertWMA\wmaconvert.exe"C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s3⤵
- Executes dropped EXE
PID:4188
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 113⤵
- Suspicious use of WriteProcessMemory
PID:1240 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 114⤵PID:3872
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.0MB
MD5bb5f3686ecf860d379f1ed8f5fcf6ef6
SHA1e6a59412fbc7ef390ea987a7528cbab9da01e546
SHA25651b3c30daf3e112435a0664a9382c0219291fb334aad21773657ed5f2c2bb05d
SHA5123a82a9a4c9c498bc25ab62a9313e6cd08f9e603bd6b2d2f908b9c458c4a2bdba237d96501206f0ed14469a7e70752f35af5d266bc8ddd18151f70c11a9e0d46d
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Filesize
1.0MB
MD5cced716efbee87668a97b876b93aafed
SHA131574d88978912bf835a096afc436ff70f4d36ce
SHA256a0713a4294b34e87610a5444e79d924de04158d6b5995f9e00e4f12067269111
SHA512e0a702c43bcf61dc60bc8d120d34529fa8e8b3dfa1efcedd91788552f1aa9968ab2a4dadd420513f403cd492f64a34b9649ec79f7c19fddae77c72151fc69760
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Filesize
235KB
MD5b6bc84e44476ef95eace852529371a20
SHA15132e8c4ceda48fbd8861ba9ebfd2419302b94ac
SHA256422786052e7a275004eb51eac7c4ff9d555d1e3004552e85f9cb223da51621ac
SHA51276e2f9081a9bcca87263703ffe3e79b0d38c3f16b5cdd867db9b8bc3a0661e5ce40dc8ef52ae8f295beb5c835ccb3a67eda596e2c6778117165cd3642bf9b4ac
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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