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Analysis
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max time kernel
147s -
max time network
150s -
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, 14:04
Static task
static1
Behavioral task
behavioral1
Sample
tuc5.exe
Resource
win7-20231130-en
Behavioral task
behavioral2
Sample
tuc5.exe
Resource
win10v2004-20231130-en
General
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Target
tuc5.exe
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Size
6.9MB
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MD5
16de34a6ea50a8ff8cb6adfdc527bf4d
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SHA1
9e3c64178ccbcff51d8bbc8b01426d2224bf51fb
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SHA256
aef134c97f786b44321bc0f55d6509a3ce56eba367d925cc610ac6b6312f4f6b
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SHA512
8d519bfb9f26742185c687a82a190908841c4e96b60bd9eb58a9d4a45be9b03f51d043e47927d11110a3d7fcb609b1880a93688aab25f567eb39c259c88a2b77
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SSDEEP
196608:3xOlhkHxfDumIwWJfU1IzKkGjAqiuGIqOg9zj:kjkHxfKTnJjzKkRtF9zj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3324 tuc5.tmp 4448 wmaconvert.exe 3020 wmaconvert.exe -
Loads dropped DLL 3 IoCs
pid Process 3324 tuc5.tmp 3324 tuc5.tmp 3324 tuc5.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 152.89.198.214 Destination IP 194.49.94.194 -
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-STCDG.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-9MQ41.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-2N47F.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-69KKO.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-95K5N.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-JVET2.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-CLFV9.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-ARR08.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-IIC07.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-LV0K7.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-7KLJ2.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-UFDF8.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-VKAST.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-CRF2Q.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-IIF34.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-D2U78.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-3EVL3.tmp tuc5.tmp File opened for modification C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-N5H00.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-GA0MB.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-B8B6C.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-NICV8.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\stuff\is-JIAC8.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-R2AM9.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-ETNC1.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-FAA81.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-6M5H7.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-52EIQ.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-P6N96.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\lessmsi\is-KFSR3.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-ODOHJ.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-CP5EV.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-68ULD.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-RCM2O.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-VBDOC.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-6V9AT.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-SD09K.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-SK3ES.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\uninstall\unins000.dat tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-8IIBP.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-AH94U.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-MHIFH.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-SF2O7.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-62CDN.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-2FMLO.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-B1DC9.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-VTROH.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\is-E6VBT.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-O2300.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-QJ329.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-JBMLH.tmp tuc5.tmp File opened for modification C:\Program Files (x86)\ConvertWMA\wmaconvert.exe tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-Q4KIK.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-NDAU0.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-7265A.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-LVA40.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-ANCDH.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-T2VAT.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-BEGJC.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\uninstall\is-1MAUO.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-0VG6C.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\is-PBB47.tmp tuc5.tmp File created C:\Program Files (x86)\ConvertWMA\bin\x86\plugins\internal\is-B0HQ4.tmp tuc5.tmp -
Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3324 tuc5.tmp -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 2876 wrote to memory of 3324 2876 tuc5.exe 87 PID 2876 wrote to memory of 3324 2876 tuc5.exe 87 PID 2876 wrote to memory of 3324 2876 tuc5.exe 87 PID 3324 wrote to memory of 4772 3324 tuc5.tmp 90 PID 3324 wrote to memory of 4772 3324 tuc5.tmp 90 PID 3324 wrote to memory of 4772 3324 tuc5.tmp 90 PID 3324 wrote to memory of 4448 3324 tuc5.tmp 92 PID 3324 wrote to memory of 4448 3324 tuc5.tmp 92 PID 3324 wrote to memory of 4448 3324 tuc5.tmp 92 PID 3324 wrote to memory of 3852 3324 tuc5.tmp 95 PID 3324 wrote to memory of 3852 3324 tuc5.tmp 95 PID 3324 wrote to memory of 3852 3324 tuc5.tmp 95 PID 3324 wrote to memory of 3020 3324 tuc5.tmp 94 PID 3324 wrote to memory of 3020 3324 tuc5.tmp 94 PID 3324 wrote to memory of 3020 3324 tuc5.tmp 94 PID 3852 wrote to memory of 1644 3852 net.exe 96 PID 3852 wrote to memory of 1644 3852 net.exe 96 PID 3852 wrote to memory of 1644 3852 net.exe 96
Processes
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C:\Users\Admin\AppData\Local\Temp\tuc5.exe"C:\Users\Admin\AppData\Local\Temp\tuc5.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:2876 -
C:\Users\Admin\AppData\Local\Temp\is-CSNS4.tmp\tuc5.tmp"C:\Users\Admin\AppData\Local\Temp\is-CSNS4.tmp\tuc5.tmp" /SL5="$50066,6950053,68096,C:\Users\Admin\AppData\Local\Temp\tuc5.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3324 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵PID:4772
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C:\Program Files (x86)\ConvertWMA\wmaconvert.exe"C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -i3⤵
- Executes dropped EXE
PID:4448
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C:\Program Files (x86)\ConvertWMA\wmaconvert.exe"C:\Program Files (x86)\ConvertWMA\wmaconvert.exe" -s3⤵
- Executes dropped EXE
PID:3020
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 113⤵
- Suspicious use of WriteProcessMemory
PID:3852 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 114⤵PID:1644
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
1004KB
MD57548ce108d191480194317a7106a3a08
SHA1862bbc28f569d96c61bc5b4efd3d70961c79af87
SHA2567ce4b863ae49f5c3eb8e600c597fb0dc58361414c18ac065993de85226c20f2c
SHA5127ea603e6d55f90727ce014d5ab163a6cfa37dc4a6a5ddb322cf1984e3cd3dbf94672aec447bd65ea83f9965946c356ae37993cd7ec5013ace6abec108e6979b3
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Filesize
1.2MB
MD5dc338c278f52ede627a0969f2f400438
SHA1c9f78355090db2494776099666cdbaa906719be2
SHA256a6c803cfb3fcd85143ab076af610d8f76e508ba66eb5bada6202bf363eb303b4
SHA512be693de4b27be42629d9472fb2cf63b6a6cc96ce251ba88af08ff01a6b4bbf2cb1995c8c92f603ed0ccf980d928f860438097d379d13d2c1e4eb8ccab4df3f5e
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Filesize
419KB
MD524050462fb848899f4666bd93596c1e8
SHA13980a2659dc8d58064e9cff86558bc13a659fc23
SHA256cae8f57dbedd18ab252b5ddebcad9993058c08c030187e9e17259fa3a39573d6
SHA512cf7e614d85fb7edac3be65622740d02b0b91a6601b0ae187536fb8b228d94c4e73ecc15b2d79a5fd931f0cefc2dab8fb58c9acea59a7efbfd50ef354a36a4a70
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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