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Analysis
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max time kernel
154s -
max time network
145s -
platform
windows10-2004_x64 -
resource
win10v2004-20231127-en -
resource tags
arch:x64arch:x86image:win10v2004-20231127-enlocale:en-usos:windows10-2004-x64system -
submitted
12/12/2023, 14:37
Static task
static1
Behavioral task
behavioral1
Sample
tuc3.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
tuc3.exe
Resource
win10v2004-20231127-en
General
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Target
tuc3.exe
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Size
7.2MB
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MD5
a5c73f548d3ecf47fdbb6d2f5c3f93d8
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SHA1
f5bec713ca192b58a310f0130a9f484ecd556db6
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SHA256
a8c1ac9575fbacb880b46937828bcf41f54e7734a3871f5bbaa2ca5f704c913f
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SHA512
8d5ab8cad1d90b6d137674946723a6586f100c3bf4000ae20e815cb771253f7f6810f83e3a2946a92c0bdf711fad1e3130d3307b34e9f73f08965fc0af2eedb3
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SSDEEP
196608:ixm50EF70ZaWLZ97vnC8LpS7+bI9cpSzj:8Et0Zak7aIA7kSzj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 804 tuc3.tmp 3344 numgif.exe 1168 numgif.exe -
Loads dropped DLL 3 IoCs
pid Process 804 tuc3.tmp 804 tuc3.tmp 804 tuc3.tmp -
Unexpected DNS network traffic destination 1 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 -
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)\numGIF\bin\x86\is-GGN44.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-3K097.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-TPFHO.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-EJLBO.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-SCJ15.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-N34BS.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-K2ATM.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-LBQ58.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-7QA8S.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-1UP8M.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-CVA97.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\stuff\is-37BUD.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-CBCHS.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-I2MV0.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-KVS1U.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-NL0M6.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-6JBL8.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-6D6C1.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-E2SKO.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-7RTKP.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-BC4DT.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-8OOKS.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-D62PL.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-L1T8E.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-CI5N6.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-Q7H1F.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-PQB37.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-V34MA.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-5V43U.tmp tuc3.tmp File opened for modification C:\Program Files (x86)\numGIF\numgif.exe tuc3.tmp File created C:\Program Files (x86)\numGIF\stuff\is-M4VMU.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-3M3EM.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-BO5LA.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-NSFLB.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\lessmsi\is-0VA0J.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\is-RSC9E.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-88O9P.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-U37NU.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-JV5HT.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-6U2CT.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-TM42A.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-UMJ7I.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-GMEMH.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-PNOR5.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-VJ5TN.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-H6N1R.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-PI7HB.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-0CV0O.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-RNJD5.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-6ODTQ.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\plugins\internal\is-VO7NC.tmp tuc3.tmp File opened for modification C:\Program Files (x86)\numGIF\uninstall\unins000.dat tuc3.tmp File created C:\Program Files (x86)\numGIF\stuff\is-C0AEM.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\stuff\is-CGQQT.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-FU0G1.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-U6GJO.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\uninstall\is-R65UT.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-EQ8H0.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-96SIT.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\uninstall\unins000.dat tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-4ILK8.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-LVE91.tmp tuc3.tmp File created C:\Program Files (x86)\numGIF\bin\x86\is-94BCJ.tmp tuc3.tmp -
Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 804 tuc3.tmp -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 4144 wrote to memory of 804 4144 tuc3.exe 86 PID 4144 wrote to memory of 804 4144 tuc3.exe 86 PID 4144 wrote to memory of 804 4144 tuc3.exe 86 PID 804 wrote to memory of 2152 804 tuc3.tmp 90 PID 804 wrote to memory of 2152 804 tuc3.tmp 90 PID 804 wrote to memory of 2152 804 tuc3.tmp 90 PID 804 wrote to memory of 3344 804 tuc3.tmp 92 PID 804 wrote to memory of 3344 804 tuc3.tmp 92 PID 804 wrote to memory of 3344 804 tuc3.tmp 92 PID 804 wrote to memory of 2072 804 tuc3.tmp 95 PID 804 wrote to memory of 2072 804 tuc3.tmp 95 PID 804 wrote to memory of 2072 804 tuc3.tmp 95 PID 804 wrote to memory of 1168 804 tuc3.tmp 93 PID 804 wrote to memory of 1168 804 tuc3.tmp 93 PID 804 wrote to memory of 1168 804 tuc3.tmp 93 PID 2072 wrote to memory of 2124 2072 net.exe 96 PID 2072 wrote to memory of 2124 2072 net.exe 96 PID 2072 wrote to memory of 2124 2072 net.exe 96
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:4144 -
C:\Users\Admin\AppData\Local\Temp\is-883BN.tmp\tuc3.tmp"C:\Users\Admin\AppData\Local\Temp\is-883BN.tmp\tuc3.tmp" /SL5="$E0042,7257737,121856,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:804 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵PID:2152
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C:\Program Files (x86)\numGIF\numgif.exe"C:\Program Files (x86)\numGIF\numgif.exe" -i3⤵
- Executes dropped EXE
PID:3344
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C:\Program Files (x86)\numGIF\numgif.exe"C:\Program Files (x86)\numGIF\numgif.exe" -s3⤵
- Executes dropped EXE
PID:1168
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 123⤵
- Suspicious use of WriteProcessMemory
PID:2072 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 124⤵PID:2124
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2.1MB
MD557ced71d2e317eabb615aa41744d1b1f
SHA16cc65d30c5fd466c87947a037b4b334150cd07c6
SHA256063e3ba1e7b81c595bcda4226b7258730c769626de660452e5aefc7f0ad45737
SHA5122c76683fcacdbe5497fd042424f1ac4da0cd74f62f0516e1bc77487bce7fed98b21836582e6ed8eee157bf854bc550dec6e4697919cd21adf76ae400fcb98662
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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