b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a

Analysis

max time kernel
151s
max time network
178s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
04/12/2022, 13:17

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General

Target

b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe
Size

660KB
MD5

4a06e90bd3d2deadd72a3161fd1b1d1d
SHA1

8b3564120558d49090bcc08f47482bafbaf27a19
SHA256

b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a
SHA512

27b3eec5fde0f239f12c920def54a857b2fd233b1d8dc7a5637a5d79be5e78ec5306338d3168221576475fb95b9f951138435a8f5e9d8ea47046ff3f358a30c9
SSDEEP

12288:97K72wJqy2+pgRxRkmPabdQNED+YnsdFtxDkopJsw/kvZ:tq2wIy2+pwxRHaSxYnsdWopJs5R

Score

7^/10

Malware Config

Signatures

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	b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1236	1688	WerFault.exe	77

Modifies registry class 5 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54DA2A44-59EC-DDCC-ED6E-E5F67963B71C}\ = "PSFactoryBuffer"	b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54DA2A44-59EC-DDCC-ED6E-E5F67963B71C}\InProcServer32	b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54DA2A44-59EC-DDCC-ED6E-E5F67963B71C}\InProcServer32\ = "%systemroot%\\SysWow64\\wininet.dll"	b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54DA2A44-59EC-DDCC-ED6E-E5F67963B71C}\InProcServer32\ThreadingModel = "Both"	b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{54DA2A44-59EC-DDCC-ED6E-E5F67963B71C}	b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe

C:\Users\Admin\AppData\Local\Temp\b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe
"C:\Users\Admin\AppData\Local\Temp\b855f795a9bf03ab46a373dc09066ac18994a0603101e40b3a0fa3b0959caf8a.exe"
1⤵
- Checks BIOS information in registry
- Modifies registry class
PID:1688
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1688 -s 1136
  2⤵
  - Program crash
  PID:1236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1688 -ip 1688
1⤵
PID:4828

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1688-132-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/1688-134-0x0000000002090000-0x00000000020E6000-memory.dmp

Filesize
344KB

Download
memory/1688-139-0x0000000002091000-0x00000000020C7000-memory.dmp

Filesize
216KB

Download
memory/1688-140-0x0000000000401000-0x0000000000405000-memory.dmp

Filesize
16KB

Download
memory/1688-141-0x0000000000400000-0x00000000004D2000-memory.dmp

Filesize
840KB

Download
memory/1688-142-0x0000000002091000-0x00000000020C7000-memory.dmp

Filesize
216KB

Download