Analysis
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max time kernel
41s -
max time network
46s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
12-07-2022 06:48
Static task
static1
Behavioral task
behavioral1
Sample
iebwvjjvih.dll
Resource
win7-20220414-en
windows7_x64
0 signatures
0 seconds
General
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Target
iebwvjjvih.dll
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Size
10.6MB
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MD5
825bf79bf5ea0fc0bd1ec248d247647d
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SHA1
01183ae1bfc3cf4c43312b45b8de227e949dee32
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SHA256
78f5872d9cee1fdebd7700529958935ae07e7ee79872ff169601fad5964e1efe
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SHA512
70be186a258ae6429c20398f981bec4695ae9a595ac7c11c41b9e4d335cd1453e7beddbf4e291ac91d9d119427b474c8db4d481d935399b28e1780161ab7dfbf
Malware Config
Signatures
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Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs
Processes:
rundll32.exedescription ioc process Key opened \REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__ rundll32.exe -
Checks BIOS information in registry 2 TTPs 2 IoCs
BIOS information is often read in order to detect sandboxing environments.
Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion rundll32.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion rundll32.exe -
Processes:
resource yara_rule behavioral1/memory/784-56-0x0000000002080000-0x00000000031CE000-memory.dmp themida behavioral1/memory/784-58-0x0000000002080000-0x00000000031CE000-memory.dmp themida -
Processes:
rundll32.exedescription ioc process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA rundll32.exe -
Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
Processes:
rundll32.exepid process 784 rundll32.exe -
Program crash 1 IoCs
Processes:
WerFault.exepid pid_target process target process 1216 784 WerFault.exe rundll32.exe -
Suspicious use of WriteProcessMemory 11 IoCs
Processes:
rundll32.exerundll32.exedescription pid process target process PID 1720 wrote to memory of 784 1720 rundll32.exe rundll32.exe PID 1720 wrote to memory of 784 1720 rundll32.exe rundll32.exe PID 1720 wrote to memory of 784 1720 rundll32.exe rundll32.exe PID 1720 wrote to memory of 784 1720 rundll32.exe rundll32.exe PID 1720 wrote to memory of 784 1720 rundll32.exe rundll32.exe PID 1720 wrote to memory of 784 1720 rundll32.exe rundll32.exe PID 1720 wrote to memory of 784 1720 rundll32.exe rundll32.exe PID 784 wrote to memory of 1216 784 rundll32.exe WerFault.exe PID 784 wrote to memory of 1216 784 rundll32.exe WerFault.exe PID 784 wrote to memory of 1216 784 rundll32.exe WerFault.exe PID 784 wrote to memory of 1216 784 rundll32.exe WerFault.exe
Processes
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C:\Windows\system32\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\iebwvjjvih.dll,#11⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\rundll32.exerundll32.exe C:\Users\Admin\AppData\Local\Temp\iebwvjjvih.dll,#12⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 784 -s 3243⤵
- Program crash
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
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Downloads
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memory/784-54-0x0000000000000000-mapping.dmp
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memory/784-55-0x0000000075711000-0x0000000075713000-memory.dmpFilesize
8KB
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memory/784-56-0x0000000002080000-0x00000000031CE000-memory.dmpFilesize
17.3MB
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memory/784-57-0x0000000077040000-0x00000000771C0000-memory.dmpFilesize
1.5MB
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memory/784-58-0x0000000002080000-0x00000000031CE000-memory.dmpFilesize
17.3MB
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memory/1216-59-0x0000000000000000-mapping.dmp