Analysis
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max time kernel
144s -
max time network
151s -
platform
windows10-1703_x64 -
resource
win10-20231129-en -
resource tags
arch:x64arch:x86image:win10-20231129-enlocale:en-usos:windows10-1703-x64system -
submitted
11-12-2023 08:05
Static task
static1
Behavioral task
behavioral1
Sample
18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe
Resource
win10-20231129-en
General
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Target
18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe
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Size
6.9MB
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MD5
574934fc4dd0be9821665042076c0d99
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SHA1
c97c46c9f7c4119ab9cc23ac92a38bd6329c742b
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SHA256
18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92
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SHA512
4e0232ede42a388a0b910223ecc4f7c664671452f45d615a53d7166a45ceccec220547f231f00fc167733ce7b65ef20ba48120f2169aa4f7c315ad087c1d00b8
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SSDEEP
196608:eH/2cOhoGEpX+jRFRvz29jgM7+3Utny3r/mvZO0agzj:bcOhoGE1ArRvqlgM7xtAT0Hzj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 2780 wmaformat.exe 220 wmaformat.exe -
Loads dropped DLL 3 IoCs
pid Process 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.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)\WMAFormat\bin\x86\is-24CB8.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\lessmsi\is-KKDEQ.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File opened for modification C:\Program Files (x86)\WMAFormat\wmaformat.exe 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-U675D.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-FOMEK.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\plugins\internal\is-2GIAC.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File opened for modification C:\Program Files (x86)\WMAFormat\uninstall\unins000.dat 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-40HEU.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-P2G7U.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-8U765.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-490SC.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-U9PCC.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-OO7Q5.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-V9CMK.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-LAMJ1.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-5M0MM.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-QO65V.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-KQJ4U.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-7L2OJ.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-6B1GT.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\uninstall\is-JPA40.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-RELLR.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-2G530.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-APBVO.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-DC0R0.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-FTI2S.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4T2SS.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-EEFO0.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-8QTJ5.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-9CRRR.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\is-67MG7.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-16CB0.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-1VI8M.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-25JM3.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-ETNVL.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-LAPO0.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-3IDOC.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-SGSJL.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-KTMHD.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-GKFA1.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-1KSUC.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-RCOSB.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-T8G6D.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-QDFOB.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-F32DU.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-7J81K.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-06STI.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4VVQB.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-RD3OL.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-8C2BT.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\plugins\internal\is-VUN81.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-426LT.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-NU86K.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-F988Q.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-MGBHK.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-7UIQS.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\uninstall\unins000.dat 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-BB611.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-U7G4R.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-T209E.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-7CFKD.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-681R0.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-LHALL.tmp 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp -
Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 4524 wrote to memory of 3604 4524 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe 74 PID 4524 wrote to memory of 3604 4524 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe 74 PID 4524 wrote to memory of 3604 4524 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe 74 PID 3604 wrote to memory of 2708 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 75 PID 3604 wrote to memory of 2708 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 75 PID 3604 wrote to memory of 2708 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 75 PID 3604 wrote to memory of 2780 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 76 PID 3604 wrote to memory of 2780 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 76 PID 3604 wrote to memory of 2780 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 76 PID 3604 wrote to memory of 3960 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 78 PID 3604 wrote to memory of 3960 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 78 PID 3604 wrote to memory of 3960 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 78 PID 3604 wrote to memory of 220 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 80 PID 3604 wrote to memory of 220 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 80 PID 3604 wrote to memory of 220 3604 18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp 80 PID 3960 wrote to memory of 3252 3960 net.exe 81 PID 3960 wrote to memory of 3252 3960 net.exe 81 PID 3960 wrote to memory of 3252 3960 net.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe"C:\Users\Admin\AppData\Local\Temp\18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4524 -
C:\Users\Admin\AppData\Local\Temp\is-IV9KR.tmp\18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp"C:\Users\Admin\AppData\Local\Temp\is-IV9KR.tmp\18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp" /SL5="$70210,6982471,68096,C:\Users\Admin\AppData\Local\Temp\18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:3604 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵PID:2708
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C:\Program Files (x86)\WMAFormat\wmaformat.exe"C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i3⤵
- Executes dropped EXE
PID:2780
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 113⤵
- Suspicious use of WriteProcessMemory
PID:3960 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 114⤵PID:3252
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C:\Program Files (x86)\WMAFormat\wmaformat.exe"C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s3⤵
- Executes dropped EXE
PID:220
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD5c343c906aaa2e2ac5b3ae9ab154c80a4
SHA1b1ed930436a743821a403f3c185a222f41a2af44
SHA256ea6a69b2b6f3893ac9963afcb168abc24e5c879ea1c600f6c54723564bfbe135
SHA512df1ebb33e8675a5decd77cc66ba0befb7dad77442b5447009301123e868332a520dca4177b7db2fa9e39846b916daa2e77b172e238a251b80a40990931a94eb6
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Filesize
795KB
MD5c58bd17c531e2a2dd11bb5f48fe90691
SHA1e9bb73fc7d49a7d3427bb57422ddbc9a77f7939c
SHA256a5b39d68d04b5273de8d52ed924519c6e492274ce5715af1404c82a92a6d3025
SHA512a7c7960221c1394eb4a3829461a0c74f7d7fb73eec5992f373cc28dee5468ebf74f83491949d5bc42932c78f1ef03ab8595b4cdc0bd52f42f8d398ba4ad85ee9
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C:\Users\Admin\AppData\Local\Temp\is-IV9KR.tmp\18b1c9b75f5ccbec5e604651deb91cfff920bd1f357b5ce3b95a537a518ddc92.tmp
Filesize687KB
MD5f448d7f4b76e5c9c3a4eaff16a8b9b73
SHA131808f1ffa84c954376975b7cdb0007e6b762488
SHA2567233b85eb0f8b3aa5cae3811d727aa8742fec4d1091c120a0fe15006f424cc49
SHA512f8197458cd2764c0b852dac34f9bf361110a7dc86903024a97c7bcd3f77b148342bf45e3c2b60f6af8198ae3b83938dbaad5e007d71a0f88006f3a0618cf36f4
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Filesize
2KB
MD5a69559718ab506675e907fe49deb71e9
SHA1bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA2562f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
SHA512e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
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Filesize
19KB
MD53adaa386b671c2df3bae5b39dc093008
SHA1067cf95fbdb922d81db58432c46930f86d23dded
SHA25671cd2f5bc6e13b8349a7c98697c6d2e3fcdeea92699cedd591875bea869fae38
SHA512bbe4187758d1a69f75a8cca6b3184e0c20cf8701b16531b55ed4987497934b3c9ef66ecd5e6b83c7357f69734f1c8301b9f82f0a024bb693b732a2d5760fd303