Resubmissions
27-03-2024 18:03
240327-wnc4zshf37 1027-03-2024 18:03
240327-wm7xzacg9s 326-03-2024 22:18
240326-18ekrsgh2x 10Analysis
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max time kernel
81s -
max time network
86s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
27-03-2024 18:03
Static task
static1
Behavioral task
behavioral1
Sample
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe
Resource
win7-20240220-en
General
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Target
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe
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Size
1.8MB
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MD5
2d8a1f40b64bd8c8b08f5fd4a75f00af
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SHA1
629443666dae380d7ffe7eb2ac5dcfa37b3878e0
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SHA256
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4
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SHA512
1b52ee7f7a4640299591e3a34539ea8e1fe2c086e9261a0ba50b8f031e7a904b32500de60808ed97dc94c327b5cf6563b3cb27567791108d335ea70fcdb4d180
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SSDEEP
49152:xk6ZYm+57MNe1f5mjxkehKOlXy60CdBa37Li:x/ZnM1f50jhKOlptd07L
Malware Config
Extracted
amadey
4.17
http://185.215.113.32
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install_dir
00c07260dc
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install_file
explorgu.exe
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strings_key
461809bd97c251ba0c0c8450c7055f1d
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url_paths
/yandex/index.php
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
Processes:
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exeexplorgu.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ explorgu.exe -
Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exeexplorgu.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion explorgu.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion explorgu.exe -
Executes dropped EXE 1 IoCs
Processes:
explorgu.exepid process 1956 explorgu.exe -
Identifies Wine through registry keys 2 TTPs 2 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
Processes:
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exeexplorgu.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Wine bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe Key opened \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Software\Wine explorgu.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
Processes:
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exeexplorgu.exepid process 4624 bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe 1956 explorgu.exe -
Drops file in Windows directory 1 IoCs
Processes:
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exedescription ioc process File created C:\Windows\Tasks\explorgu.job bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Modifies registry class 13 IoCs
Processes:
OpenWith.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.sql\ = "sql_auto_file" OpenWith.exe Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file\shell\edit\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1" OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file\shell\open OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file\shell\open\command OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\礋Ǯ OpenWith.exe Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\礋Ǯ\ = "sql_auto_file" OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\Local Settings OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\.sql OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file\shell\edit OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file\shell OpenWith.exe Key created \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file\shell\edit\command OpenWith.exe Set value (str) \REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000_Classes\sql_auto_file\shell\open\command\ = "%SystemRoot%\\system32\\NOTEPAD.EXE %1" OpenWith.exe -
Opens file in notepad (likely ransom note) 1 IoCs
Processes:
NOTEPAD.EXEpid process 3588 NOTEPAD.EXE -
Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exeexplorgu.exepid process 4624 bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe 4624 bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe 1956 explorgu.exe 1956 explorgu.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
OpenWith.exepid process 4592 OpenWith.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exepid process 4624 bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe -
Suspicious use of SetWindowsHookEx 9 IoCs
Processes:
OpenWith.exepid process 4592 OpenWith.exe 4592 OpenWith.exe 4592 OpenWith.exe 4592 OpenWith.exe 4592 OpenWith.exe 4592 OpenWith.exe 4592 OpenWith.exe 4592 OpenWith.exe 4592 OpenWith.exe -
Suspicious use of WriteProcessMemory 2 IoCs
Processes:
OpenWith.exedescription pid process target process PID 4592 wrote to memory of 3588 4592 OpenWith.exe NOTEPAD.EXE PID 4592 wrote to memory of 3588 4592 OpenWith.exe NOTEPAD.EXE
Processes
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C:\Users\Admin\AppData\Local\Temp\bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe"C:\Users\Admin\AppData\Local\Temp\bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
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C:\Windows\system32\OpenWith.exeC:\Windows\system32\OpenWith.exe -Embedding1⤵
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\system32\NOTEPAD.EXE"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\ReadLock.sql2⤵
- Opens file in notepad (likely ransom note)
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=1028 --field-trial-handle=2272,i,4858140932023865871,5726683989663339295,262144 --variations-seed-version /prefetch:81⤵
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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⤵
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C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exeC:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exe1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Identifies Wine through registry keys
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
Network
MITRE ATT&CK Matrix ATT&CK v13
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exeFilesize
1.8MB
MD52d8a1f40b64bd8c8b08f5fd4a75f00af
SHA1629443666dae380d7ffe7eb2ac5dcfa37b3878e0
SHA256bcdc4c99c5db0927f727006bca8affc303798825188bbf166e76c600a4015ab4
SHA5121b52ee7f7a4640299591e3a34539ea8e1fe2c086e9261a0ba50b8f031e7a904b32500de60808ed97dc94c327b5cf6563b3cb27567791108d335ea70fcdb4d180
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C:\Users\Admin\AppData\Local\Temp\00c07260dc\explorgu.exeFilesize
1.8MB
MD58dd90ae2ffc44f59b3df091c1dda9176
SHA1c5c721de2c704fc883c59a471df882bfc08390ae
SHA2568dbfbc04f355645064527a9f24f199b613d6ec8d2c5e1b4acddc0e3455b2e17a
SHA51223bd6d0283abea8e6254b54f16360becff7ac3a013c76db4cc861bd7018b4376cd39019769783387d74451e7d6785681afa6c04fb2feaa9c69e861270bbeeee6
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memory/1956-23-0x0000000004F30000-0x0000000004F31000-memory.dmpFilesize
4KB
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memory/1956-29-0x0000000004F70000-0x0000000004F71000-memory.dmpFilesize
4KB
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memory/1956-26-0x0000000004EF0000-0x0000000004EF1000-memory.dmpFilesize
4KB
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memory/1956-27-0x0000000004F00000-0x0000000004F01000-memory.dmpFilesize
4KB
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memory/1956-28-0x0000000004F80000-0x0000000004F81000-memory.dmpFilesize
4KB
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memory/1956-25-0x0000000004F50000-0x0000000004F51000-memory.dmpFilesize
4KB
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memory/1956-24-0x0000000004F10000-0x0000000004F11000-memory.dmpFilesize
4KB
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memory/1956-22-0x0000000004F20000-0x0000000004F21000-memory.dmpFilesize
4KB
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memory/1956-21-0x0000000000B10000-0x0000000000FBD000-memory.dmpFilesize
4.7MB
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memory/1956-20-0x0000000000B10000-0x0000000000FBD000-memory.dmpFilesize
4.7MB
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memory/1956-30-0x0000000000B10000-0x0000000000FBD000-memory.dmpFilesize
4.7MB
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memory/4624-7-0x0000000005960000-0x0000000005961000-memory.dmpFilesize
4KB
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memory/4624-6-0x00000000059D0000-0x00000000059D1000-memory.dmpFilesize
4KB
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memory/4624-13-0x0000000000F30000-0x00000000013DD000-memory.dmpFilesize
4.7MB
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memory/4624-11-0x00000000059E0000-0x00000000059E1000-memory.dmpFilesize
4KB
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memory/4624-10-0x00000000059F0000-0x00000000059F1000-memory.dmpFilesize
4KB
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memory/4624-9-0x00000000059C0000-0x00000000059C1000-memory.dmpFilesize
4KB
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memory/4624-8-0x0000000005970000-0x0000000005971000-memory.dmpFilesize
4KB
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memory/4624-17-0x0000000000F30000-0x00000000013DD000-memory.dmpFilesize
4.7MB
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memory/4624-0-0x0000000000F30000-0x00000000013DD000-memory.dmpFilesize
4.7MB
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memory/4624-5-0x0000000005980000-0x0000000005981000-memory.dmpFilesize
4KB
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memory/4624-4-0x00000000059A0000-0x00000000059A1000-memory.dmpFilesize
4KB
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memory/4624-3-0x0000000005990000-0x0000000005991000-memory.dmpFilesize
4KB
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memory/4624-2-0x0000000000F30000-0x00000000013DD000-memory.dmpFilesize
4.7MB
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memory/4624-1-0x0000000077704000-0x0000000077706000-memory.dmpFilesize
8KB