Overview
overview
10Static
static
sample.zip
windows7_x64
1sample.zip
windows10-2004_x64
1sample/docs.bat
windows7_x64
10sample/docs.bat
windows10-2004_x64
10sample/documents.lnk
windows7_x64
10sample/documents.lnk
windows10-2004_x64
10sample/palerma3.dll
windows7_x64
10sample/palerma3.dll
windows10-2004_x64
10Analysis
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max time kernel
90s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
09/06/2022, 16:42
Static task
static1
Behavioral task
behavioral1
Sample
sample.zip
Resource
win7-20220414-en
windows7_x64
Behavioral task
behavioral2
Sample
sample.zip
Resource
win10v2004-20220414-en
windows10-2004_x64
Behavioral task
behavioral3
Sample
sample/docs.bat
Resource
win7-20220414-en
windows7_x64
Behavioral task
behavioral4
Sample
sample/docs.bat
Resource
win10v2004-20220414-en
windows10-2004_x64
Behavioral task
behavioral5
Sample
sample/documents.lnk
Resource
win7-20220414-en
windows7_x64
Behavioral task
behavioral6
Sample
sample/documents.lnk
Resource
win10v2004-20220414-en
windows10-2004_x64
Behavioral task
behavioral7
Sample
sample/palerma3.dll
Resource
win7-20220414-en
windows7_x64
General
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Target
sample/documents.lnk
-
Size
2KB
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MD5
5d48299aa0f1b1b03af9e88b49991a2f
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SHA1
8f8f3380f47eeef5219a4e00ed9f9b9c7f7a8c97
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SHA256
8d7326d4224dbc0237d7b46969a9b65ce46ad5309627ef9704833cae388f56b1
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SHA512
f8cc047e90af1dcf32e7ab49b48fdeead1c379cc22f21c8223ee1045961ce6524aebcde9f02d461942730d673d26b4edbc6eef7320aacfc3412c8e524263cf07
Malware Config
Extracted
bumblebee
6rr
145.239.30.26:443
194.37.97.135:443
185.62.58.238:443
176.107.177.124:443
192.236.160.254:443
192.236.192.85:443
185.62.56.201:443
103.175.16.59:443
198.98.57.91:443
154.56.0.221:443
64.44.101.250:443
103.175.16.117:443
63.141.248.253:443
192.236.194.136:443
193.239.84.247:443
192.236.161.191:443
185.156.172.123:443
54.38.136.187:443
64.44.102.6:443
192.119.64.21:443
79.110.52.56:443
103.175.16.107:443
146.19.173.224:443
68.233.238.105:443
64.44.135.250:443
103.175.16.121:443
192.236.249.68:443
193.239.84.254:443
37.120.198.248:443
146.19.173.139:443
194.135.33.149:443
154.56.0.241:443
23.254.201.97:443
Signatures
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Enumerates VirtualBox registry keys 2 TTPs 5 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxGuest rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxMouse rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxService rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxSF rundll32.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VBoxVideo rundll32.exe -
Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 3 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\FADT\VBOX__ rundll32.exe Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\RSDT\VBOX__ rundll32.exe -
Looks for VirtualBox Guest Additions in registry 2 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\SOFTWARE\Oracle\VirtualBox Guest Additions rundll32.exe -
Checks BIOS information in registry 2 TTPs 3 IoCs
BIOS information is often read in order to detect sandboxing environments.
description ioc Process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate rundll32.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation cmd.exe -
Identifies Wine through registry keys 2 TTPs 1 IoCs
Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Wine rundll32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe 4840 rundll32.exe -
Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 396 wrote to memory of 4872 396 cmd.exe 80 PID 396 wrote to memory of 4872 396 cmd.exe 80 PID 4872 wrote to memory of 932 4872 cmd.exe 81 PID 4872 wrote to memory of 932 4872 cmd.exe 81 PID 932 wrote to memory of 4840 932 cmd.exe 83 PID 932 wrote to memory of 4840 932 cmd.exe 83
Processes
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C:\Windows\system32\cmd.execmd /c C:\Users\Admin\AppData\Local\Temp\sample\documents.lnk1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:396 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c start docs.bat2⤵
- Suspicious use of WriteProcessMemory
PID:4872 -
C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /K docs.bat3⤵
- Suspicious use of WriteProcessMemory
PID:932 -
C:\Windows\system32\rundll32.exeRunDll32 palerma3.dll,nHqRHTKVae4⤵
- Enumerates VirtualBox registry keys
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Looks for VirtualBox Guest Additions in registry
- Checks BIOS information in registry
- Identifies Wine through registry keys
- Suspicious behavior: EnumeratesProcesses
PID:4840
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