b23c71d9cb920762e11c8af09498218b668680fb45d930d20eec7e23baf763e4

Analysis

max time kernel
142s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30-10-2022 04:18

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General

Target

b23c71d9cb920762e11c8af09498218b668680fb45d930d20eec7e23baf763e4.dll
Size

879KB
MD5

401b4575978e491c7990f645f3fa3b40
SHA1

a4d73fa77f8ffcd3467edcb02612757dc8d253b9
SHA256

b23c71d9cb920762e11c8af09498218b668680fb45d930d20eec7e23baf763e4
SHA512

09dd92f8e217c814b9c41da706cfc430e959b70c4ebcffe58fcc93fd3d482b14c798961c315d573477b6f2265cdfe6e924f0ab687be6d7495c729d3a722be0dc
SSDEEP

24576:VgeItGDlEDt5jF8RwoYtDUwSGC/uDnwLIBv1+:dIkCp5jdUwtDUo

Score

9^/10

evasion

Malware Config

Signatures

Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 1 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	regsvr32.exe

Checks BIOS information in registry 2 TTPs 2 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	regsvr32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	regsvr32.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.

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Software\Wine	regsvr32.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
4808	regsvr32.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4808	regsvr32.exe
4808	regsvr32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 4808	3724	regsvr32.exe	82
PID 3724 wrote to memory of 4808	3724	regsvr32.exe	82
PID 3724 wrote to memory of 4808	3724	regsvr32.exe	82

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\b23c71d9cb920762e11c8af09498218b668680fb45d930d20eec7e23baf763e4.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:3724
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\b23c71d9cb920762e11c8af09498218b668680fb45d930d20eec7e23baf763e4.dll
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Checks BIOS information in registry
  - Identifies Wine through registry keys
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  PID:4808

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Virtualization/Sandbox Evasion

T1497

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Virtualization/Sandbox Evasion

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4808-132-0x0000000000000000-mapping.dmp

Download
memory/4808-133-0x0000000010000000-0x000000001023C000-memory.dmp

Filesize
2.2MB

Download
memory/4808-134-0x0000000010000000-0x000000001023C000-memory.dmp

Filesize
2.2MB

Download
memory/4808-135-0x00000000010D0000-0x000000000116D000-memory.dmp

Filesize
628KB

Download
memory/4808-136-0x0000000077510000-0x00000000776B3000-memory.dmp

Filesize
1.6MB

Download
memory/4808-137-0x0000000077510000-0x00000000776B3000-memory.dmp

Filesize
1.6MB

Download