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Analysis Report SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe

Overview

General Information

Sample Name:SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe
Analysis ID:272063
MD5:25edb5ff97ed5a4ace78b2a6ebf07fdb
SHA1:e3b19c7d9867881b741737b29bd896b6eacf0ae1
SHA256:b1eec48a5a51e87cd760b7cc6538b6e1dc52a83ee13af31c7c6c79e01b49e5e0

Most interesting Screenshot:

Detection

GuLoader
Score:64
Range:0 - 100
Whitelisted:false
Confidence:100%

Signatures

Potential malicious icon found
Yara detected GuLoader
Tries to detect virtualization through RDTSC time measurements
Yara detected VB6 Downloader Generic
Abnormal high CPU Usage
Contains functionality for execution timing, often used to detect debuggers
Contains functionality to read the PEB
Creates a DirectInput object (often for capturing keystrokes)
Found large amount of non-executed APIs
PE file contains strange resources
Sample file is different than original file name gathered from version info
Uses code obfuscation techniques (call, push, ret)

Classification

Startup

  • System is w10x64
  • cleanup

Malware Configuration

No configs have been found

Yara Overview

Memory Dumps

SourceRuleDescriptionAuthorStrings
Process Memory Space: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe PID: 6812JoeSecurity_VB6DownloaderGenericYara detected VB6 Downloader GenericJoe Security
    Process Memory Space: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe PID: 6812JoeSecurity_GuLoaderYara detected GuLoaderJoe Security

      Sigma Overview

      No Sigma rule has matched

      Signature Overview

      Click to jump to signature section

      Show All Signature Results
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000002.1301081716.00000000006FA000.00000004.00000020.sdmpBinary or memory string: <HOOK MODULE="DDRAW.DLL" FUNCTION="DirectDrawCreateEx"/>

      System Summary:

      barindex
      Potential malicious icon foundShow sources
      Source: initial sampleIcon embedded in PE file: bad icon match: 20047c7c70f0e004
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeProcess Stats: CPU usage > 98%
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000002.1300746823.0000000000620000.00000002.00000001.sdmpBinary or memory string: OriginalFilenameuser32j% vs SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000000.216354460.000000000040E000.00000002.00020000.sdmpBinary or memory string: OriginalFilenameMALTHESOP.exe vs SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000002.1302833980.0000000002B60000.00000004.00000001.sdmpBinary or memory string: OriginalFilenameMALTHESOP.exeFE2XW vs SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeBinary or memory string: OriginalFilenameMALTHESOP.exe vs SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: classification engineClassification label: mal64.rans.troj.evad.winEXE@1/0@0/0
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeStatic PE information: Section: .text IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_READ
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeSection loaded: C:\Windows\SysWOW64\msvbvm60.dllJump to behavior
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior

      Data Obfuscation:

      barindex
      Yara detected GuLoaderShow sources
      Source: Yara matchFile source: Process Memory Space: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe PID: 6812, type: MEMORY
      Yara detected VB6 Downloader GenericShow sources
      Source: Yara matchFile source: Process Memory Space: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe PID: 6812, type: MEMORY
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00407424 push es; iretd 1_2_00407427
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00407324 push es; iretd 1_2_00407327
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_004093B9 push edi; ret 1_2_004093BA
      Source: initial sampleStatic PE information: section name: .text entropy: 7.23658144075
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeProcess information set: NOOPENFILEERRORBOXJump to behavior

      Malware Analysis System Evasion:

      barindex
      Tries to detect virtualization through RDTSC time measurementsShow sources
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeRDTSC instruction interceptor: First address: 0000000000660140 second address: 0000000000662CAA instructions: 0x00000000 rdtsc 0x00000002 popad 0x00000003 add esp, 24h 0x00000006 push ecx 0x00000007 jmp 00007FF8C0C5C3A3h 0x00000009 call 00007FF8C0C5C36Eh 0x0000000e pop ecx 0x0000000f jmp ecx 0x00000011 pop ecx 0x00000012 cmp eax, E35A7436h 0x00000017 call 00007FF8C0C5EDF2h 0x0000001c call 00007FF8C0C5C40Fh 0x00000021 cmp ax, bx 0x00000024 xor edi, edi 0x00000026 mov ecx, 00A95F60h 0x0000002b cmp ebx, edx 0x0000002d push ecx 0x0000002e call 00007FF8C0C5C39Fh 0x00000033 call 00007FF8C0C5C39Ah 0x00000038 lfence 0x0000003b mov edx, dword ptr [7FFE0014h] 0x00000041 lfence 0x00000044 ret 0x00000045 mov esi, edx 0x00000047 pushad 0x00000048 rdtsc
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00662CCC rdtsc 1_2_00662CCC
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeAPI coverage: 8.9 %
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeBinary or memory string: C:\Program Files\Qemu-ga\qemu-ga.exe
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00662CCC rdtsc 1_2_00662CCC
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00660C02 mov eax, dword ptr fs:[00000030h]1_2_00660C02
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00662B59 mov eax, dword ptr fs:[00000030h]1_2_00662B59
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00662904 mov eax, dword ptr fs:[00000030h]1_2_00662904
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00661700 mov eax, dword ptr fs:[00000030h]1_2_00661700
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00662F08 mov eax, dword ptr fs:[00000030h]1_2_00662F08
      Source: C:\Users\user\Desktop\SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exeCode function: 1_2_00660FF9 mov eax, dword ptr fs:[00000030h]1_2_00660FF9
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000002.1301319586.0000000000E80000.00000002.00000001.sdmpBinary or memory string: Shell_TrayWnd
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000002.1301319586.0000000000E80000.00000002.00000001.sdmpBinary or memory string: Progman
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000002.1301319586.0000000000E80000.00000002.00000001.sdmpBinary or memory string: Progmanlock
      Source: SWIFT MT103 Notification from KBank_swiftMessage_ref000454000000.exe, 00000001.00000002.1301319586.0000000000E80000.00000002.00000001.sdmpBinary or memory string: Program Manager[

      Mitre Att&ck Matrix

      Initial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionExfiltrationCommand and ControlNetwork EffectsRemote Service EffectsImpact
      Valid AccountsWindows Management InstrumentationPath InterceptionProcess Injection1Software Packing2Input Capture1Security Software Discovery111Remote ServicesInput Capture1Exfiltration Over Other Network MediumData ObfuscationEavesdrop on Insecure Network CommunicationRemotely Track Device Without AuthorizationModify System Partition
      Default AccountsScheduled Task/JobBoot or Logon Initialization ScriptsBoot or Logon Initialization ScriptsProcess Injection1LSASS MemoryProcess Discovery1Remote Desktop ProtocolData from Removable MediaExfiltration Over BluetoothJunk DataExploit SS7 to Redirect Phone Calls/SMSRemotely Wipe Data Without AuthorizationDevice Lockout
      Domain AccountsAt (Linux)Logon Script (Windows)Logon Script (Windows)Obfuscated Files or Information2Security Account ManagerSystem Information Discovery11SMB/Windows Admin SharesData from Network Shared DriveAutomated ExfiltrationSteganographyExploit SS7 to Track Device LocationObtain Device Cloud BackupsDelete Device Data

      Behavior Graph

      Hide Legend

      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

      Screenshots

      Thumbnails

      This section contains all screenshots as thumbnails, including those not shown in the slideshow.