Windows Analysis Report
Qv4fcaX7ft.exe

Overview

General Information

Sample Name: Qv4fcaX7ft.exe
Analysis ID: 677963
MD5: 72ca6d6179572214160da9198d4dd496
SHA1: fbcd2b16d346c156f6083b0367b751df0a8d6503
SHA256: 5a3d6d5164f3d0a89f158b542c683752ba6071799d1b375d0b74a643c2cf7618
Tags: ArkeiStealerexe
Infos:

Detection

SmokeLoader
Score: 100
Range: 0 - 100
Whitelisted: false
Confidence: 100%

Signatures

Multi AV Scanner detection for submitted file
Benign windows process drops PE files
Yara detected SmokeLoader
System process connects to network (likely due to code injection or exploit)
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Sample uses process hollowing technique
Maps a DLL or memory area into another process
Machine Learning detection for sample
Injects a PE file into a foreign processes
Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Contains functionality to inject code into remote processes
Deletes itself after installation
Machine Learning detection for dropped file
C2 URLs / IPs found in malware configuration
Creates a thread in another existing process (thread injection)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Checks if the current machine is a virtual machine (disk enumeration)
Uses 32bit PE files
May sleep (evasive loops) to hinder dynamic analysis
Uses code obfuscation techniques (call, push, ret)
Internet Provider seen in connection with other malware
Contains functionality to call native functions
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Drops files with a non-matching file extension (content does not match file extension)
PE file contains strange resources
Drops PE files
Tries to load missing DLLs
Contains functionality to read the PEB
Uses a known web browser user agent for HTTP communication
Checks if the current process is being debugged
Creates a process in suspended mode (likely to inject code)

Classification

AV Detection
barindex
Multi AV Scanner detection for submitted file
Source: Qv4fcaX7ft.exe Virustotal: Detection: 40% Perma Link
Antivirus detection for URL or domain
Source: http://host-host-file8.com/ URL Reputation: Label: malware
Multi AV Scanner detection for domain / URL
Source: host-file-host6.com Virustotal: Detection: 25% Perma Link
Source: host-host-file8.com Virustotal: Detection: 21% Perma Link
Multi AV Scanner detection for dropped file
Source: C:\Users\user\AppData\Roaming\switbwt Virustotal: Detection: 40% Perma Link
Machine Learning detection for sample
Source: Qv4fcaX7ft.exe Joe Sandbox ML: detected
Machine Learning detection for dropped file
Source: C:\Users\user\AppData\Roaming\switbwt Joe Sandbox ML: detected
Source: 00000010.00000002.588777858.0000000000420000.00000004.00000800.00020000.00000000.sdmp Malware Configuration Extractor: SmokeLoader {"C2 list": ["http://host-file-host6.com/", "http://host-host-file8.com/"]}
Uses 32bit PE files
Source: Qv4fcaX7ft.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, 32BIT_MACHINE
Source: Binary string: C:\dofabobor\x.pdb source: Qv4fcaX7ft.exe, switbwt.6.dr
Source: Binary string: XC:\dofabobor\x.pdb`ZBH7@ source: Qv4fcaX7ft.exe, switbwt.6.dr

Networking
barindex
System process connects to network (likely due to code injection or exploit)
Source: C:\Windows\explorer.exe Domain query: host-file-host6.com
Source: C:\Windows\explorer.exe Domain query: host-host-file8.com
C2 URLs / IPs found in malware configuration
Source: Malware configuration extractor URLs: http://host-file-host6.com/
Source: Malware configuration extractor URLs: http://host-host-file8.com/
Internet Provider seen in connection with other malware
Source: Joe Sandbox View ASN Name: GOOGLE-AS-APGoogleAsiaPacificPteLtdSG GOOGLE-AS-APGoogleAsiaPacificPteLtdSG
Uses a known web browser user agent for HTTP communication
Source: global traffic HTTP traffic detected: POST / HTTP/1.1Connection: Keep-AliveContent-Type: application/x-www-form-urlencodedAccept: */*Referer: http://ocgywdvooe.com/User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; Trident/7.0; rv:11.0) like GeckoContent-Length: 250Host: host-file-host6.com
Source: unknown HTTP traffic detected: POST / HTTP/1.1Connection: Keep-AliveContent-Type: application/x-www-form-urlencodedAccept: */*Referer: http://ocgywdvooe.com/User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; Trident/7.0; rv:11.0) like GeckoContent-Length: 250Host: host-file-host6.com
Source: unknown DNS traffic detected: queries for: host-file-host6.com

Key, Mouse, Clipboard, Microphone and Screen Capturing
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Yara detected SmokeLoader
Source: Yara match File source: 1.2.Qv4fcaX7ft.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.switbwt.24c15a0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 16.2.switbwt.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.Qv4fcaX7ft.exe.26215a0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000006.00000000.495364437.0000000002E21000.00000020.80000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.520149531.0000000002301000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000010.00000002.588777858.0000000000420000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.519610356.0000000000500000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000010.00000002.588984126.0000000001F61000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY
Uses 32bit PE files
Source: Qv4fcaX7ft.exe Static PE information: RELOCS_STRIPPED, EXECUTABLE_IMAGE, 32BIT_MACHINE
Contains functionality to call native functions
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_0040180C Sleep,NtTerminateProcess, 1_2_0040180C
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_00401818 Sleep,NtTerminateProcess, 1_2_00401818
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_00401822 Sleep,NtTerminateProcess, 1_2_00401822
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_00401826 Sleep,NtTerminateProcess, 1_2_00401826
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_00401834 Sleep,NtTerminateProcess, 1_2_00401834
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 14_2_024C0110 VirtualAlloc,GetModuleFileNameA,CreateProcessA,VirtualFree,VirtualAlloc,GetThreadContext,ReadProcessMemory,NtUnmapViewOfSection,VirtualAllocEx,NtWriteVirtualMemory,NtWriteVirtualMemory,WriteProcessMemory,SetThreadContext,ResumeThread,ExitProcess, 14_2_024C0110
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_0040180C Sleep,NtTerminateProcess, 16_2_0040180C
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_00401818 Sleep,NtTerminateProcess, 16_2_00401818
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_00401822 Sleep,NtTerminateProcess, 16_2_00401822
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_00401826 Sleep,NtTerminateProcess, 16_2_00401826
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_00401834 Sleep,NtTerminateProcess, 16_2_00401834
PE file contains strange resources
Source: Qv4fcaX7ft.exe Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: Qv4fcaX7ft.exe Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: switbwt.6.dr Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: switbwt.6.dr Static PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Tries to load missing DLLs
Source: C:\Windows\explorer.exe Section loaded: taskschd.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: xmllite.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: dhcpcsvc6.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: dhcpcsvc.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: ondemandconnroutehelper.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: webio.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: mswsock.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: winnsi.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: ondemandconnroutehelper.dll Jump to behavior
Source: C:\Windows\explorer.exe Section loaded: capabilityaccessmanagerclient.dll Jump to behavior
Source: Qv4fcaX7ft.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: switbwt.6.dr Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: Qv4fcaX7ft.exe Virustotal: Detection: 40%
Source: Qv4fcaX7ft.exe Static PE information: Section: .text IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Key opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiers Jump to behavior
Source: unknown Process created: C:\Users\user\Desktop\Qv4fcaX7ft.exe "C:\Users\user\Desktop\Qv4fcaX7ft.exe"
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Process created: C:\Users\user\Desktop\Qv4fcaX7ft.exe "C:\Users\user\Desktop\Qv4fcaX7ft.exe"
Source: unknown Process created: C:\Users\user\AppData\Roaming\switbwt C:\Users\user\AppData\Roaming\switbwt
Source: C:\Users\user\AppData\Roaming\switbwt Process created: C:\Users\user\AppData\Roaming\switbwt C:\Users\user\AppData\Roaming\switbwt
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Process created: C:\Users\user\Desktop\Qv4fcaX7ft.exe "C:\Users\user\Desktop\Qv4fcaX7ft.exe" Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Process created: C:\Users\user\AppData\Roaming\switbwt C:\Users\user\AppData\Roaming\switbwt Jump to behavior
Source: C:\Windows\explorer.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{0f87369f-a4e5-4cfc-bd3e-73e6154572dd}\InprocServer32 Jump to behavior
Source: C:\Windows\explorer.exe File created: C:\Users\user\AppData\Roaming\switbwt Jump to behavior
Source: classification engine Classification label: mal100.troj.evad.winEXE@6/2@4/1
Source: Qv4fcaX7ft.exe Static PE information: data directory type: IMAGE_DIRECTORY_ENTRY_DEBUG
Source: Binary string: C:\dofabobor\x.pdb source: Qv4fcaX7ft.exe, switbwt.6.dr
Source: Binary string: XC:\dofabobor\x.pdb`ZBH7@ source: Qv4fcaX7ft.exe, switbwt.6.dr
Uses code obfuscation techniques (call, push, ret)
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_004011D0 push ebx; iretd 1_2_00401217
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_004011D7 push ebx; iretd 1_2_00401217
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 1_2_004011EB push ebx; iretd 1_2_00401217
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 14_2_024C1977 push ebx; iretd 14_2_024C19B7
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 14_2_024C1970 push ebx; iretd 14_2_024C19B7
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 14_2_024C198B push ebx; iretd 14_2_024C19B7
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_004011D0 push ebx; iretd 16_2_00401217
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_004011D7 push ebx; iretd 16_2_00401217
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 16_2_004011EB push ebx; iretd 16_2_00401217
Source: initial sample Static PE information: section name: .text entropy: 7.418736880149773
Source: initial sample Static PE information: section name: .text entropy: 7.418736880149773
Drops files with a non-matching file extension (content does not match file extension)
Source: C:\Windows\explorer.exe File created: C:\Users\user\AppData\Roaming\switbwt Jump to dropped file
Drops PE files
Source: C:\Windows\explorer.exe File created: C:\Users\user\AppData\Roaming\switbwt Jump to dropped file

Hooking and other Techniques for Hiding and Protection
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Deletes itself after installation
Source: C:\Windows\explorer.exe File deleted: c:\users\user\desktop\qv4fcax7ft.exe Jump to behavior
Hides that the sample has been downloaded from the Internet (zone.identifier)
Source: C:\Windows\explorer.exe File opened: C:\Users\user\AppData\Roaming\switbwt:Zone.Identifier read attributes | delete Jump to behavior

Malware Analysis System Evasion
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Checks if the current machine is a virtual machine (disk enumeration)
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Key enumerated: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\SCSI Jump to behavior
May sleep (evasive loops) to hinder dynamic analysis
Source: C:\Windows\explorer.exe TID: 2996 Thread sleep count: 555 > 30 Jump to behavior
Source: C:\Windows\explorer.exe TID: 3304 Thread sleep count: 231 > 30 Jump to behavior
Source: C:\Windows\explorer.exe TID: 3484 Thread sleep count: 225 > 30 Jump to behavior
Source: C:\Windows\explorer.exe TID: 4416 Thread sleep count: 365 > 30 Jump to behavior
Source: C:\Windows\explorer.exe TID: 512 Thread sleep count: 95 > 30 Jump to behavior
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)
Source: C:\Windows\explorer.exe Window / User API: threadDelayed 555 Jump to behavior
Source: C:\Windows\explorer.exe Window / User API: threadDelayed 365 Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Process information queried: ProcessInformation Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe System information queried: ModuleInformation Jump to behavior
Source: explorer.exe, 00000006.00000000.477302217.000000000807B000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: a0c91efb8b}\\?\STORAGE#Volume#{e6e9dfc6-98f2-11e9-90ce-806e6f6e6963}#0000000000100000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\\?\SCSI#CdRom&Ven_NECVMWar&Prod_VMware_SATA_CD00#5&280b647&0&000000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\\?\SCSI#CdRom&Ven_Msft&Prod_Virtual_DVD-ROM#2&1f4adffe&0&000001#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}
Source: explorer.exe, 00000006.00000000.507447859.0000000007EF6000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: SCSI\Disk&Ven_VMware&Prod_Virtual_disk\5&1ec51bf7&0&000000
Source: explorer.exe, 00000006.00000000.477302217.000000000807B000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: \\?\scsi#cdrom&ven_necvmwar&prod_vmware_sata_cd00#5&280b647&0&000000#{53f56308-b6bf-11d0-94f2-00a0c91efb8b}8Ll/
Source: explorer.exe, 00000006.00000000.436833506.0000000004A0B000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: \\?\STORAGE#Volume#{e6e9dfc6-98f2-11e9-90ce-806e6f6e6963}#0000000025700000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\\?\STORAGE#Volume#{e6e9dfc6-98f2-11e9-90ce-806e6f6e6963}#000000001F400000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\\?\STORAGE#Volume#{e6e9dfc6-98f2-11e9-90ce-806e6f6e6963}#0000000026700000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\\?\STORAGE#Volume#{e6e9dfc6-98f2-11e9-90ce-806e6f6e6963}#0000000000100000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\\?\SCSI#CdRom&Ven_NECVMWar&Prod_VMware_SATA_CD00#5&280b647&0&000000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}\\?\SCSI#CdRom&Ven_Msft&Prod_Virtual_DVD-ROM#2&1f4adffe&0&000001#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}
Source: explorer.exe, 00000006.00000000.477302217.000000000807B000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: \\?\scsi#cdrom&ven_necvmwar&prod_vmware_sata_cd00#5&280b647&0&000000#{53f56308-b6bf-11d0-94f2-00a0c91efb8b}
Source: explorer.exe, 00000006.00000000.477441439.00000000080B1000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: VMware SATA CD00
Source: explorer.exe, 00000006.00000000.450511242.0000000006915000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: \\?\SCSI#CdRom&Ven_NECVMWar&Prod_VMware_SATA_CD00#5&280b647&0&000000#{53f5630d-b6bf-11d0-94f2-00a0c91efb8b}
Source: explorer.exe, 00000006.00000000.477441439.00000000080B1000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: SCSI\CDROM&VEN_NECVMWAR&PROD_VMWARE_SATA_CD00\5&280B647&0&000000
Source: explorer.exe, 00000006.00000000.507447859.0000000007EF6000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: SCSI\CdRom&Ven_NECVMWar&Prod_VMware_SATA_CD00\5&280b647&0&000000

Anti Debugging
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Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation))
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe System information queried: CodeIntegrityInformation Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt System information queried: CodeIntegrityInformation Jump to behavior
Contains functionality to read the PEB
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 14_2_024C0042 push dword ptr fs:[00000030h] 14_2_024C0042
Checks if the current process is being debugged
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Process queried: DebugPort Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Process queried: DebugPort Jump to behavior

HIPS / PFW / Operating System Protection Evasion
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Benign windows process drops PE files
Source: C:\Windows\explorer.exe File created: switbwt.6.dr Jump to dropped file
System process connects to network (likely due to code injection or exploit)
Source: C:\Windows\explorer.exe Domain query: host-file-host6.com
Source: C:\Windows\explorer.exe Domain query: host-host-file8.com
Sample uses process hollowing technique
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Section unmapped: C:\Users\user\AppData\Roaming\switbwt base address: 400000 Jump to behavior
Maps a DLL or memory area into another process
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Section loaded: unknown target: C:\Windows\explorer.exe protection: read write Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Section loaded: unknown target: C:\Windows\explorer.exe protection: execute and read Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Section loaded: unknown target: C:\Windows\explorer.exe protection: read write Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Section loaded: unknown target: C:\Windows\explorer.exe protection: execute and read Jump to behavior
Injects a PE file into a foreign processes
Source: C:\Users\user\AppData\Roaming\switbwt Memory written: C:\Users\user\AppData\Roaming\switbwt base: 400000 value starts with: 4D5A Jump to behavior
Contains functionality to inject code into remote processes
Source: C:\Users\user\AppData\Roaming\switbwt Code function: 14_2_024C0110 VirtualAlloc,GetModuleFileNameA,CreateProcessA,VirtualFree,VirtualAlloc,GetThreadContext,ReadProcessMemory,NtUnmapViewOfSection,VirtualAllocEx,NtWriteVirtualMemory,NtWriteVirtualMemory,WriteProcessMemory,SetThreadContext,ResumeThread,ExitProcess, 14_2_024C0110
Creates a thread in another existing process (thread injection)
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Thread created: C:\Windows\explorer.exe EIP: 2E21930 Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Thread created: unknown EIP: 5381930 Jump to behavior
Creates a process in suspended mode (likely to inject code)
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Process created: C:\Users\user\Desktop\Qv4fcaX7ft.exe "C:\Users\user\Desktop\Qv4fcaX7ft.exe" Jump to behavior
Source: C:\Users\user\AppData\Roaming\switbwt Process created: C:\Users\user\AppData\Roaming\switbwt C:\Users\user\AppData\Roaming\switbwt Jump to behavior
Source: explorer.exe, 00000006.00000000.468120241.0000000001430000.00000002.00000001.00040000.00000000.sdmp, explorer.exe, 00000006.00000000.455289118.0000000007EF6000.00000004.00000001.00020000.00000000.sdmp, explorer.exe, 00000006.00000000.471950268.0000000006100000.00000004.00000001.00020000.00000000.sdmp Binary or memory string: Shell_TrayWnd
Source: explorer.exe, 00000006.00000000.468120241.0000000001430000.00000002.00000001.00040000.00000000.sdmp, explorer.exe, 00000006.00000000.435566572.0000000000E38000.00000004.00000020.00020000.00000000.sdmp, explorer.exe, 00000006.00000000.494953524.0000000001430000.00000002.00000001.00040000.00000000.sdmp Binary or memory string: Progman
Source: explorer.exe, 00000006.00000000.468120241.0000000001430000.00000002.00000001.00040000.00000000.sdmp, explorer.exe, 00000006.00000000.494953524.0000000001430000.00000002.00000001.00040000.00000000.sdmp, explorer.exe, 00000006.00000000.435813833.0000000001430000.00000002.00000001.00040000.00000000.sdmp Binary or memory string: YProgram Managerf
Source: explorer.exe, 00000006.00000000.468120241.0000000001430000.00000002.00000001.00040000.00000000.sdmp, explorer.exe, 00000006.00000000.494953524.0000000001430000.00000002.00000001.00040000.00000000.sdmp, explorer.exe, 00000006.00000000.435813833.0000000001430000.00000002.00000001.00040000.00000000.sdmp Binary or memory string: Progmanlock
Source: C:\Windows\explorer.exe Key value queried: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Cryptography MachineGuid Jump to behavior
Source: C:\Users\user\Desktop\Qv4fcaX7ft.exe Code function: 0_2_0041C7E0 GetSystemTimeAsFileTime,GetCurrentProcessId,GetCurrentThreadId,GetTickCount,QueryPerformanceCounter, 0_2_0041C7E0

Stealing of Sensitive Information
barindex
Yara detected SmokeLoader
Source: Yara match File source: 1.2.Qv4fcaX7ft.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.switbwt.24c15a0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 16.2.switbwt.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.Qv4fcaX7ft.exe.26215a0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000006.00000000.495364437.0000000002E21000.00000020.80000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.520149531.0000000002301000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000010.00000002.588777858.0000000000420000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.519610356.0000000000500000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000010.00000002.588984126.0000000001F61000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY

Remote Access Functionality
barindex
Yara detected SmokeLoader
Source: Yara match File source: 1.2.Qv4fcaX7ft.exe.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 14.2.switbwt.24c15a0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 16.2.switbwt.400000.0.unpack, type: UNPACKEDPE
Source: Yara match File source: 0.2.Qv4fcaX7ft.exe.26215a0.1.raw.unpack, type: UNPACKEDPE
Source: Yara match File source: 00000006.00000000.495364437.0000000002E21000.00000020.80000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.520149531.0000000002301000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000010.00000002.588777858.0000000000420000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000001.00000002.519610356.0000000000500000.00000004.00000800.00020000.00000000.sdmp, type: MEMORY
Source: Yara match File source: 00000010.00000002.588984126.0000000001F61000.00000004.10000000.00040000.00000000.sdmp, type: MEMORY
windows-stand
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
behaviorgraph top1 signatures2 2 Behavior Graph ID: 677963 Sample: Qv4fcaX7ft.exe Startdate: 03/08/2022 Architecture: WINDOWS Score: 100 30 Multi AV Scanner detection for domain / URL 2->30 32 Antivirus detection for URL or domain 2->32 34 Multi AV Scanner detection for submitted file 2->34 36 3 other signatures 2->36 7 Qv4fcaX7ft.exe 2->7         started        10 switbwt 2->10         started        process3 signatures4 46 Sample uses process hollowing technique 7->46 12 Qv4fcaX7ft.exe 7->12         started        48 Multi AV Scanner detection for dropped file 10->48 50 Machine Learning detection for dropped file 10->50 52 Contains functionality to inject code into remote processes 10->52 54 Injects a PE file into a foreign processes 10->54 15 switbwt 10->15         started        process5 signatures6 56 Checks for kernel code integrity (NtQuerySystemInformation(CodeIntegrityInformation)) 12->56 58 Maps a DLL or memory area into another process 12->58 60 Checks if the current machine is a virtual machine (disk enumeration) 12->60 17 explorer.exe 2 12->17 injected 62 Creates a thread in another existing process (thread injection) 15->62 process7 dnsIp8 26 host-file-host6.com 34.118.39.10, 49848, 80 GOOGLE-AS-APGoogleAsiaPacificPteLtdSG United States 17->26 28 host-host-file8.com 17->28 22 C:\Users\user\AppData\Roaming\switbwt, PE32 17->22 dropped 24 C:\Users\user\...\switbwt:Zone.Identifier, ASCII 17->24 dropped 38 System process connects to network (likely due to code injection or exploit) 17->38 40 Benign windows process drops PE files 17->40 42 Deletes itself after installation 17->42 44 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->44 file9 signatures10
  • No. of IPs < 25%
  • 25% < No. of IPs < 50%
  • 50% < No. of IPs < 75%
  • 75% < No. of IPs

Contacted Public IPs

IP Domain Country Flag ASN ASN Name Malicious
34.118.39.10
 host-file-host6.com United States
139070 GOOGLE-AS-APGoogleAsiaPacificPteLtdSG true

Contacted Domains

Name IP Active
host-file-host6.com 34.118.39.10 true
host-host-file8.com unknown unknown

Contacted URLs

Name Malicious Antivirus Detection Reputation
http://host-file-host6.com/ true
  • URL Reputation: safe
 unknown
http://host-host-file8.com/ true
  • URL Reputation: malware
 unknown