Windows Analysis Report malware.ps1

Overview

General Information

Sample Name: malware.ps1
Analysis ID: 526642
MD5: b0b0657a4c375cffc126892c10b5acd6
SHA1: 580152e7c431a47fd0fe487b0171476de9b8e407
SHA256: 061eb7119db9995949b39369aed60c2c7617c82e580705206ce7b60de123aaa5
Infos:

Most interesting Screenshot:

Detection

Ursnif
Score: 56
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Yara detected Ursnif
Compiles code for process injection (via .Net compiler)
Sigma detected: Suspicious Csc.exe Source File Folder
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Queries the volume information (name, serial number etc) of a device
Drops PE files
May sleep (evasive loops) to hinder dynamic analysis
Compiles C# or VB.Net code
Found dropped PE file which has not been started or loaded
Creates a process in suspended mode (likely to inject code)
Contains long sleeps (>= 3 min)
Enables debug privileges

Classification

Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming\Microsoft\Windows Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming\Microsoft Jump to behavior
Source: powershell.exe, 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp String found in binary or memory: http://constitution.org/usdeclar.txt
Source: powershell.exe, 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp String found in binary or memory: http://constitution.org/usdeclar.txtC:
Source: powershell.exe, 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp String found in binary or memory: http://https://file://USER.ID%lu.exe/upd
Source: powershell.exe, 00000000.00000002.418325449.0000014F1ACAC000.00000004.00000001.sdmp String found in binary or memory: http://nuget.org/NuGet.exe
Source: powershell.exe, 00000000.00000003.365536111.0000014F2DF61000.00000004.00000001.sdmp, powershell.exe, 00000000.00000002.405438106.0000014F187A1000.00000004.00000001.sdmp String found in binary or memory: http://pesterbdd.com/images/Pester.png
Source: powershell.exe, 00000000.00000002.396528681.0000014F15D91000.00000004.00000001.sdmp String found in binary or memory: http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name
Source: powershell.exe, 00000000.00000002.417750095.0000014F1AA53000.00000004.00000001.sdmp String found in binary or memory: http://www.apache.org/licenses/LICENSE-2.0
Source: powershell.exe, 00000000.00000003.365536111.0000014F2DF61000.00000004.00000001.sdmp, powershell.exe, 00000000.00000002.405438106.0000014F187A1000.00000004.00000001.sdmp String found in binary or memory: http://www.apache.org/licenses/LICENSE-2.0.html
Source: powershell.exe, 00000000.00000002.418325449.0000014F1ACAC000.00000004.00000001.sdmp String found in binary or memory: https://contoso.com/
Source: powershell.exe, 00000000.00000002.418325449.0000014F1ACAC000.00000004.00000001.sdmp String found in binary or memory: https://contoso.com/Icon
Source: powershell.exe, 00000000.00000002.418325449.0000014F1ACAC000.00000004.00000001.sdmp String found in binary or memory: https://contoso.com/License
Source: powershell.exe, 00000000.00000003.365536111.0000014F2DF61000.00000004.00000001.sdmp, powershell.exe, 00000000.00000002.405438106.0000014F187A1000.00000004.00000001.sdmp String found in binary or memory: https://github.com/Pester/Pester
Source: powershell.exe, 00000000.00000002.418325449.0000014F1ACAC000.00000004.00000001.sdmp String found in binary or memory: https://nuget.org/nuget.exe
Source: powershell.exe, 00000000.00000002.417750095.0000014F1AA53000.00000004.00000001.sdmp String found in binary or memory: https://oneget.org
Source: powershell.exe, 00000000.00000002.417750095.0000014F1AA53000.00000004.00000001.sdmp String found in binary or memory: https://oneget.orgX
Source: powershell.exe, 00000000.00000002.417750095.0000014F1AA53000.00000004.00000001.sdmp String found in binary or memory: https://oneget.orgformat.ps1xmlagement.dll2040.missionsand

Key, Mouse, Clipboard, Microphone and Screen Capturing:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: powershell.exe PID: 5416, type: MEMORYSTR

E-Banking Fraud:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: powershell.exe PID: 5416, type: MEMORYSTR

System Summary:

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Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\SystemCertificates\CA Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Section loaded: C:\Windows\assembly\NativeImages_v4.0.30319_64\mscorlib\ac26e2af62f23e37e645b5e44068a025\mscorlib.ni.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Section loaded: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Section loaded: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Section loaded: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Section loaded: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Section loaded: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Section loaded: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorlib.dll Jump to behavior
Source: unknown Process created: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noLogo -ExecutionPolicy unrestricted -file "C:\Users\user\Desktop\malware.ps1
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\System32\conhost.exe C:\Windows\system32\conhost.exe 0xffffffff -ForceV1
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\ad403csv\ad403csv.cmdline
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RESD522.tmp" "c:\Users\user\AppData\Local\Temp\ad403csv\CSCD6795C79BDE3450B9F7CAA8771DF83B.TMP"
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.cmdline
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RESE4F1.tmp" "c:\Users\user\AppData\Local\Temp\5z3xaygo\CSC84083F42CE6043C2AA7FFF454285CD95.TMP"
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\ad403csv\ad403csv.cmdline Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.cmdline Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RESD522.tmp" "c:\Users\user\AppData\Local\Temp\ad403csv\CSCD6795C79BDE3450B9F7CAA8771DF83B.TMP" Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RESE4F1.tmp" "c:\Users\user\AppData\Local\Temp\5z3xaygo\CSC84083F42CE6043C2AA7FFF454285CD95.TMP" Jump to behavior
Source: C:\Windows\System32\conhost.exe Mutant created: \Sessions\1\BaseNamedObjects\Local\SM0:352:120:WilError_01
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Mutant created: \Sessions\1\BaseNamedObjects\{5CEB5E1C-0B8F-EE98-7550-6F0279841356}
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File created: C:\Users\user\Documents\20211122 Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File created: C:\Users\user\AppData\Local\Temp\__PSScriptPolicyTest_kc3e5p1v.f0a.ps1 Jump to behavior
Source: classification engine Classification label: mal56.troj.evad.winPS1@10/19@0/0
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File read: C:\Users\desktop.ini Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\mscorrc.dll Jump to behavior
Source: malware.ps1 Static file information: File size 1508236 > 1048576

Data Obfuscation:

barindex
Compiles C# or VB.Net code
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\ad403csv\ad403csv.cmdline
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.cmdline
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\ad403csv\ad403csv.cmdline Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.cmdline Jump to behavior

Persistence and Installation Behavior:

barindex
Drops PE files
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe File created: C:\Users\user\AppData\Local\Temp\ad403csv\ad403csv.dll Jump to dropped file
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe File created: C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.dll Jump to dropped file

Hooking and other Techniques for Hiding and Protection:

barindex
Yara detected Ursnif
Source: Yara match File source: 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: powershell.exe PID: 5416, type: MEMORYSTR
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process information set: NOOPENFILEERRORBOX Jump to behavior

Malware Analysis System Evasion:

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Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Window / User API: threadDelayed 5000 Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Window / User API: threadDelayed 4174 Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe TID: 6176 Thread sleep time: -11068046444225724s >= -30000s Jump to behavior
Found dropped PE file which has not been started or loaded
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\ad403csv\ad403csv.dll Jump to dropped file
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Dropped PE file which has not been started: C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.dll Jump to dropped file
Contains long sleeps (>= 3 min)
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process information queried: ProcessInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Thread delayed: delay time: 922337203685477 Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming\Microsoft\Windows\Start Menu\desktop.ini Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming\Microsoft\Windows Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File opened: C:\Users\user\AppData\Roaming\Microsoft Jump to behavior

Anti Debugging:

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Enables debug privileges
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process token adjusted: Debug Jump to behavior

HIPS / PFW / Operating System Protection Evasion:

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Compiles code for process injection (via .Net compiler)
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe File written: C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.0.cs Jump to dropped file
Creates a process in suspended mode (likely to inject code)
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\ad403csv\ad403csv.cmdline Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\user\AppData\Local\Temp\5z3xaygo\5z3xaygo.cmdline Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RESD522.tmp" "c:\Users\user\AppData\Local\Temp\ad403csv\CSCD6795C79BDE3450B9F7CAA8771DF83B.TMP" Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Process created: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\user\AppData\Local\Temp\RESE4F1.tmp" "c:\Users\user\AppData\Local\Temp\5z3xaygo\CSC84083F42CE6043C2AA7FFF454285CD95.TMP" Jump to behavior

Language, Device and Operating System Detection:

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Queries the volume information (name, serial number etc) of a device
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\Windows\System32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\Microsoft-Windows-Client-Features-Package00113~31bf3856ad364e35~amd64~~10.0.17134.1.cat VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_64\System.Data\v4.0_4.0.0.0__b77a5c561934e089\System.Data.dll VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\Windows\Microsoft.NET\assembly\GAC_64\System.Transactions\v4.0_4.0.0.0__b77a5c561934e089\System.Transactions.dll VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\ VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\Windows\System32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\Microsoft-Windows-Client-Features-Package00113~31bf3856ad364e35~amd64~~10.0.17134.1.cat VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\Windows\System32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\Microsoft-Windows-Client-Features-Package00113~31bf3856ad364e35~amd64~~10.0.17134.1.cat VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\Windows\System32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\Microsoft-Windows-Client-Features-Package00113~31bf3856ad364e35~amd64~~10.0.17134.1.cat VolumeInformation Jump to behavior
Source: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe Queries volume information: C:\Windows\System32\CatRoot\{F750E6C3-38EE-11D1-85E5-00C04FC295EE}\Microsoft-Windows-Client-Features-Package00113~31bf3856ad364e35~amd64~~10.0.17134.1.cat VolumeInformation Jump to behavior
Source: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior

Stealing of Sensitive Information:

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Yara detected Ursnif
Source: Yara match File source: 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: powershell.exe PID: 5416, type: MEMORYSTR

Remote Access Functionality:

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Yara detected Ursnif
Source: Yara match File source: 00000000.00000003.393533159.0000014F2E95C000.00000004.00000040.sdmp, type: MEMORY
Source: Yara match File source: Process Memory Space: powershell.exe PID: 5416, type: MEMORYSTR
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Legend:

  • Process
  • Signature
  • Created File
  • DNS/IP Info
  • Is Dropped
  • Is Windows Process
  • Number of created Registry Values
  • Number of created Files
  • Visual Basic
  • Delphi
  • Java
  • .Net C# or VB.NET
  • C, C++ or other language
  • Is malicious
  • Internet
behaviorgraph top1 signatures2 2 Behavior Graph ID: 526642 Sample: malware.ps1 Startdate: 22/11/2021 Architecture: WINDOWS Score: 56 30 Yara detected  Ursnif 2->30 32 Sigma detected: Suspicious Csc.exe Source File Folder 2->32 7 powershell.exe 1 36 2->7         started        process3 file4 22 C:\Users\user\AppData\...\ad403csv.cmdline, UTF-8 7->22 dropped 24 C:\Users\user\AppData\Local\...\5z3xaygo.0.cs, UTF-8 7->24 dropped 34 Compiles code for process injection (via .Net compiler) 7->34 11 csc.exe 3 7->11         started        14 csc.exe 3 7->14         started        16 conhost.exe 7->16         started        signatures5 process6 file7 26 C:\Users\user\AppData\Local\...\5z3xaygo.dll, PE32 11->26 dropped 18 cvtres.exe 1 11->18         started        28 C:\Users\user\AppData\Local\...\ad403csv.dll, PE32 14->28 dropped 20 cvtres.exe 1 14->20         started        process8
No contacted IP infos