Analysis
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max time kernel
145s -
max time network
132s -
platform
windows10-1703_x64 -
resource
win10-20231023-en -
resource tags
arch:x64arch:x86image:win10-20231023-enlocale:en-usos:windows10-1703-x64system -
submitted
11/12/2023, 09:17
Static task
static1
Behavioral task
behavioral1
Sample
37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe
Resource
win10-20231023-en
General
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Target
37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe
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Size
6.9MB
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MD5
139214e0bf1872bf22b1b708c4e35daa
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SHA1
17a949a4a4284303fe0bedc99a3380877ff96242
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SHA256
37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334
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SHA512
42ca4cd22b5c209433e8ebc69236b131418669010f3e471df42f64faae1a85fd7d3f20006d17cfb1a697be6f41d11ff834e7c8acc73d0409df5ba8070787f31a
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SSDEEP
98304:pzyQ4kc+v4jvDhsQepuwmrkz216aPE8d9X+X1M2CX27eGqc6hxTGZtsAzFjTidLb:kQ4PTP94zHQ9OX1M2CGjn6hDc6LKEzj
Malware Config
Signatures
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Executes dropped EXE 3 IoCs
pid Process 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 780 wmaformat.exe 4596 wmaformat.exe -
Loads dropped DLL 3 IoCs
pid Process 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.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 81.31.197.38 -
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-AL7D5.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-DOORD.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-38HD4.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File opened for modification C:\Program Files (x86)\WMAFormat\wmaformat.exe 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\uninstall\is-I2FKQ.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-O1PML.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-S81PO.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\plugins\internal\is-PO1R6.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-I7V0S.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-NJNT4.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-49REK.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-363T9.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-MI1L9.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-EFE1F.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-RF1K3.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-BG71K.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-FHUST.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-BCPRI.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-66NO9.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-T6CK2.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\plugins\internal\is-BC8S8.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-LJSAQ.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-7PTPN.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-1JPHC.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-VDST0.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-A7KJK.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-O8TFN.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-G58VH.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-441R4.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-2R9TB.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\lessmsi\is-NJ6V3.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4A8G1.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-8P867.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-PRG1Q.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-LAL23.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-BS4H1.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-HHBET.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-6NB6M.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-UMLN4.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-KD09T.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-SIKTQ.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\is-GRR8A.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\uninstall\unins000.dat 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-QKNJP.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-54BDP.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-B88K6.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-CDPB6.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\stuff\is-OL15P.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4MSI8.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-FQ1EA.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-IFQUE.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-SIV6I.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-4N238.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-IU8N3.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-URUEK.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File opened for modification C:\Program Files (x86)\WMAFormat\uninstall\unins000.dat 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-Q1B31.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-5LT0V.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-2QCVA.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-KB2D2.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-DBT5O.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-9BOM2.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp File created C:\Program Files (x86)\WMAFormat\bin\x86\is-K2CB1.tmp 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp -
Runs net.exe
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Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp -
Suspicious use of WriteProcessMemory 18 IoCs
description pid Process procid_target PID 4056 wrote to memory of 4820 4056 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe 71 PID 4056 wrote to memory of 4820 4056 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe 71 PID 4056 wrote to memory of 4820 4056 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe 71 PID 4820 wrote to memory of 3988 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 72 PID 4820 wrote to memory of 3988 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 72 PID 4820 wrote to memory of 3988 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 72 PID 4820 wrote to memory of 780 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 74 PID 4820 wrote to memory of 780 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 74 PID 4820 wrote to memory of 780 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 74 PID 4820 wrote to memory of 1636 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 76 PID 4820 wrote to memory of 1636 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 76 PID 4820 wrote to memory of 1636 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 76 PID 4820 wrote to memory of 4596 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 75 PID 4820 wrote to memory of 4596 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 75 PID 4820 wrote to memory of 4596 4820 37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp 75 PID 1636 wrote to memory of 3000 1636 net.exe 78 PID 1636 wrote to memory of 3000 1636 net.exe 78 PID 1636 wrote to memory of 3000 1636 net.exe 78
Processes
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C:\Users\Admin\AppData\Local\Temp\37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe"C:\Users\Admin\AppData\Local\Temp\37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe"1⤵
- Suspicious use of WriteProcessMemory
PID:4056 -
C:\Users\Admin\AppData\Local\Temp\is-SS84S.tmp\37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp"C:\Users\Admin\AppData\Local\Temp\is-SS84S.tmp\37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.tmp" /SL5="$7019A,6985458,68096,C:\Users\Admin\AppData\Local\Temp\37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:4820 -
C:\Windows\SysWOW64\schtasks.exe"C:\Windows\system32\schtasks.exe" /Query3⤵PID:3988
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C:\Program Files (x86)\WMAFormat\wmaformat.exe"C:\Program Files (x86)\WMAFormat\wmaformat.exe" -i3⤵
- Executes dropped EXE
PID:780
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C:\Program Files (x86)\WMAFormat\wmaformat.exe"C:\Program Files (x86)\WMAFormat\wmaformat.exe" -s3⤵
- Executes dropped EXE
PID:4596
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C:\Windows\SysWOW64\net.exe"C:\Windows\system32\net.exe" helpmsg 113⤵
- Suspicious use of WriteProcessMemory
PID:1636 -
C:\Windows\SysWOW64\net1.exeC:\Windows\system32\net1 helpmsg 114⤵PID:3000
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.8MB
MD5ce0b4d4d116f7ff827115c5ee2bfc0c4
SHA13a12cf70e643db463a3b33ec4a77c0b02acc3c82
SHA256c2a5278ab88c29c6c60460dab68829f3fdcfdf6d634a9f31d8342e890ab679d2
SHA5122d2ae0224032827b0a07a40faa34817ccce41742d3f45e124834f6808f39965d642715285fc4a3557bd428d6bea1de991b1768ba5796d2f6262ad0dff8e811bb
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C:\Users\Admin\AppData\Local\Temp\is-SS84S.tmp\37252993958cfd950f4fa1b9cd61815e76c13c8c328412b335bb1a7efa954334.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