Analysis
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max time kernel
233s -
max time network
203s -
platform
windows11-21h2_x64 -
resource
win11-20241007-en -
resource tags
arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system -
submitted
10-11-2024 11:13
Static task
static1
Behavioral task
behavioral1
Sample
release.rar
Resource
win11-20241007-en
General
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Target
release.rar
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Size
783KB
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MD5
1f4bdbaaf4a9997b0519dfec1116375c
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SHA1
5b0d7aca31b38fea1628012eed2d272f452246ee
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SHA256
06e548f88374459b49acf9269c108040582f602cde52e5f1e1e02ef1b89b4fea
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SHA512
3497bbfbdfa024e8e8672c85ee1217e1adbce506df04a27058bf1b9e3bcd17fc80a73dd4e4fbfabd06ce97572af3b30fb2ac45e706a87a95ab8b08e0fd1997b3
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SSDEEP
24576:5opkq75paphGwjhaAFnWt66OncboOILA76Ga1eESXxly3g:ap5WljIAFnWqncboOWGaMgQ
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
Processes:
builder.exepid process 3032 builder.exe -
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
builder.exedescription ioc process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language builder.exe -
Modifies registry class 2 IoCs
Processes:
7zFM.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{4336a54d-038b-4685-ab02-99bb52d3fb8b}\Instance\ 7zFM.exe Key created \REGISTRY\USER\S-1-5-21-4018527317-446799424-2810249686-1000_Classes\CLSID\{018D5C66-4533-4307-9B53-224DE2ED1FE6}\Instance\ 7zFM.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
7zFM.exepid process 2888 7zFM.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
Processes:
7zFM.exedescription pid process Token: SeRestorePrivilege 2888 7zFM.exe Token: 35 2888 7zFM.exe Token: SeSecurityPrivilege 2888 7zFM.exe Token: SeSecurityPrivilege 2888 7zFM.exe -
Suspicious use of FindShellTrayWindow 3 IoCs
Processes:
7zFM.exepid process 2888 7zFM.exe 2888 7zFM.exe 2888 7zFM.exe
Processes
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C:\Program Files\7-Zip\7zFM.exe"C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\release.rar"1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
PID:2888
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C:\Windows\System32\rundll32.exeC:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding1⤵PID:1812
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C:\Users\Admin\Desktop\release\builder.exe"C:\Users\Admin\Desktop\release\builder.exe"1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3032
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
10KB
MD54f04f0e1ff050abf6f1696be1e8bb039
SHA1bebf3088fff4595bfb53aea6af11741946bbd9ce
SHA256ded51c306ee7e59fa15c42798c80f988f6310ea77ab77de3d12dc01233757cfa
SHA51294713824b81de323e368fde18679ef8b8f2883378bffd2b7bd2b4e4bd5d48b35c6e71c9f8e9b058ba497db1bd0781807e5b7cecfd540dad611da0986c72b9f12