Analysis
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max time kernel
38s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
05-12-2022 12:41
Behavioral task
behavioral1
Sample
8fb917854437928ac7b0f98a4c7cb6b4b06a1dc7f2bf65872500dbae49e05e86.dll
Resource
win7-20220812-en
windows7-x64
5 signatures
150 seconds
General
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Target
8fb917854437928ac7b0f98a4c7cb6b4b06a1dc7f2bf65872500dbae49e05e86.dll
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Size
23KB
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MD5
c1ef84ceaa1b9676036cf564d9578871
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SHA1
c5c3555f60a9c407dd73a94208eee591012887df
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SHA256
8fb917854437928ac7b0f98a4c7cb6b4b06a1dc7f2bf65872500dbae49e05e86
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SHA512
3e3fd7e1b23d3736ea0097f3008e13442ea298c6779c30b289db18b86caaef3a01ba256491ba73642fae88570852949afe9a68a40e7c0f4121fde59b51654a90
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SSDEEP
384:hIZjMuJ0VIrMkoNRIEe1oqKZUtmyX/W28kSbWl//vDycupWLquvXlKjzq2KB4r2m:KSVkMko0IUtm95F6lPDtPLquNKj2JSr2
Malware Config
Signatures
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Modifies firewall policy service 2 TTPs 2 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\ rundll32.exe Set value (str) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Windows\SysWOW64\rundll32.exe = "C:\\Windows\\SysWOW64\\rundll32.exe:*:Enabled:rundll32" rundll32.exe -
resource yara_rule behavioral1/memory/1044-56-0x0000000010000000-0x0000000010041000-memory.dmp upx behavioral1/memory/1044-57-0x0000000010000000-0x0000000010041000-memory.dmp upx -
Drops file in System32 directory 1 IoCs
description ioc Process File opened for modification C:\Windows\SysWOW64\z98a.bin rundll32.exe -
Suspicious behavior: LoadsDriver 64 IoCs
pid Process 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe 1044 rundll32.exe -
Suspicious use of WriteProcessMemory 7 IoCs
description pid Process procid_target PID 1688 wrote to memory of 1044 1688 rundll32.exe 27 PID 1688 wrote to memory of 1044 1688 rundll32.exe 27 PID 1688 wrote to memory of 1044 1688 rundll32.exe 27 PID 1688 wrote to memory of 1044 1688 rundll32.exe 27 PID 1688 wrote to memory of 1044 1688 rundll32.exe 27 PID 1688 wrote to memory of 1044 1688 rundll32.exe 27 PID 1688 wrote to memory of 1044 1688 rundll32.exe 27
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8fb917854437928ac7b0f98a4c7cb6b4b06a1dc7f2bf65872500dbae49e05e86.dll,#11⤵
- Suspicious use of WriteProcessMemory
PID:1688 -
C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\8fb917854437928ac7b0f98a4c7cb6b4b06a1dc7f2bf65872500dbae49e05e86.dll,#12⤵
- Modifies firewall policy service
- Drops file in System32 directory
- Suspicious behavior: LoadsDriver
PID:1044
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