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Analysis Report 70xksu@jihui.com

Overview

General Information

Joe Sandbox Version:25.0.0 Tiger's Eye
Analysis ID:116884
Start date:15.03.2019
Start time:05:02:57
Joe Sandbox Product:CloudBasic
Overall analysis duration:0h 5m 7s
Hypervisor based Inspection enabled:false
Report type:full
Sample file name:70xksu@jihui.com (renamed file extension from com to exe)
Cookbook file name:default.jbs
Analysis system description:Windows 10 64 bit (version 1803) with Office 2016, Adobe Reader DC 19, Chrome 70, Firefox 63, Java 8.171, Flash 30.0.0.113
Number of analysed new started processes analysed:8
Number of new started drivers analysed:0
Number of existing processes analysed:0
Number of existing drivers analysed:0
Number of injected processes analysed:0
Technologies
  • HCA enabled
  • EGA enabled
  • HDC enabled
Analysis stop reason:Timeout
Detection:MAL
Classification:mal76.troj.evad.winEXE@3/8@0/7
EGA Information:
  • Successful, ratio: 100%
HDC Information:
  • Successful, ratio: 100% (good quality ratio 82.3%)
  • Quality average: 65.2%
  • Quality standard deviation: 36.5%
HCA Information:
  • Successful, ratio: 76%
  • Number of executed functions: 53
  • Number of non-executed functions: 67
Cookbook Comments:
  • Adjust boot time
  • Enable AMSI
Warnings:
Show All
  • Exclude process from analysis (whitelisted): WerFault.exe, wermgr.exe, conhost.exe, CompatTelRunner.exe, svchost.exe
  • Report size getting too big, too many NtOpenFile calls found.

Detection

StrategyScoreRangeReportingWhitelistedDetection
Threshold760 - 100Report FP / FNfalsemalicious

Confidence

StrategyScoreRangeFurther Analysis Required?Confidence
Threshold50 - 5false
ConfidenceConfidence


Classification

Analysis Advice

Sample monitors Window changes (e.g. starting applications), analyze the sample with the 'Simulates keyboard and window changes' cookbook
Sample tries to load a library which is not present or installed on the analysis machine, adding the library might reveal more behavior



Mitre Att&ck Matrix

Initial AccessExecutionPersistencePrivilege EscalationDefense EvasionCredential AccessDiscoveryLateral MovementCollectionExfiltrationCommand and Control
Valid AccountsWindows Remote ManagementWinlogon Helper DLLProcess Injection1Masquerading1Input Capture1Process Discovery1Application Deployment SoftwareInput Capture1Data CompressedUncommonly Used Port1
Replication Through Removable MediaService ExecutionPort MonitorsAccessibility FeaturesSoftware Packing1Network SniffingSecurity Software Discovery41Remote ServicesData from Removable MediaExfiltration Over Other Network MediumFallback Channels
Drive-by CompromiseWindows Management InstrumentationAccessibility FeaturesPath InterceptionProcess Injection1Input CaptureFile and Directory Discovery1Windows Remote ManagementData from Network Shared DriveAutomated ExfiltrationCustom Cryptographic Protocol
Exploit Public-Facing ApplicationScheduled TaskSystem FirmwareDLL Search Order HijackingObfuscated Files or Information11Credentials in FilesSystem Information Discovery11Logon ScriptsInput CaptureData EncryptedMultiband Communication

Signature Overview

Click to jump to signature section


AV Detection:

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Antivirus detection for dropped fileShow sources
Source: C:\Windows\lsass.exeAvira: Label: WORM/Mydoom.L.1
Antivirus detection for submitted fileShow sources
Source: 70xksu@jihu.exeAvira: Label: WORM/Mydoom.L.1
Antivirus detection for unpacked fileShow sources
Source: 0.2.70xksu@jihui.exe.800000.0.unpackAvira: Label: TR/Agent.Blkhl.dam
Source: 0.0.70xksu@jihui.exe.800000.1.unpackAvira: Label: TR/Agent.Blkhl.dam
Source: 1.1.lsass.exe.800000.0.unpackAvira: Label: TR/Agent.Blkhl.dam
Source: 1.2.lsass.exe.800000.0.unpackAvira: Label: TR/Agent.Blkhl.dam
Source: 1.0.lsass.exe.800000.0.unpackAvira: Label: TR/Agent.Blkhl.dam
Source: 0.0.70xksu@jihui.exe.800000.2.unpackAvira: Label: TR/Agent.Blkhl.dam
Source: 0.1.70xksu@jihui.exe.800000.0.unpackAvira: Label: TR/Agent.Blkhl.dam
Source: 0.0.70xksu@jihui.exe.800000.0.unpackAvira: Label: TR/Agent.Blkhl.dam

Spreading:

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Enumerates the file systemShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\ARM\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\Setup\Jump to behavior
Contains functionality to enumerate / list files inside a directoryShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00804D32 lstrcat,Sleep,lstrcpy,lstrcpy,CharLowerA,strstr,strstr,strstr,strstr,strstr,lstrcpy,lstrlen,lstrcat,lstrcat,memset,FindFirstFileA,FindNextFileA,lstrcpy,lstrlen,lstrcat,lstrcat,Sleep,FindClose,0_2_00804D32
Source: C:\Windows\lsass.exeCode function: 1_2_00804D32 lstrcat,Sleep,lstrcpy,lstrcpy,CharLowerA,strstr,strstr,strstr,strstr,strstr,lstrcpy,lstrlen,lstrcat,lstrcat,memset,FindFirstFileA,FindNextFileA,lstrcpy,lstrlen,lstrcat,lstrcat,Sleep,FindClose,1_2_00804D32

Networking:

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Detected TCP or UDP traffic on non-standard portsShow sources
Source: global trafficTCP traffic: 192.168.2.6:49828 -> 64.165.41.206:1042
Source: global trafficTCP traffic: 192.168.2.6:49829 -> 16.105.174.188:1042
Source: global trafficTCP traffic: 192.168.2.6:49830 -> 16.156.249.224:1042
Source: global trafficTCP traffic: 192.168.2.6:49833 -> 213.168.35.2:1042
Source: global trafficTCP traffic: 192.168.2.6:49834 -> 15.61.13.184:1042
Source: global trafficTCP traffic: 192.168.2.6:49835 -> 16.115.194.128:1042
Connects to IPs without corresponding DNS lookupsShow sources
Source: unknownTCP traffic detected without corresponding DNS query: 64.165.41.206
Source: unknownTCP traffic detected without corresponding DNS query: 16.105.174.188
Source: unknownTCP traffic detected without corresponding DNS query: 16.105.174.188
Source: unknownTCP traffic detected without corresponding DNS query: 16.105.174.188
Source: unknownTCP traffic detected without corresponding DNS query: 16.156.249.224
Source: unknownTCP traffic detected without corresponding DNS query: 16.156.249.224
Source: unknownTCP traffic detected without corresponding DNS query: 16.156.249.224
Source: unknownTCP traffic detected without corresponding DNS query: 213.168.35.2
Source: unknownTCP traffic detected without corresponding DNS query: 213.168.35.2
Source: unknownTCP traffic detected without corresponding DNS query: 213.168.35.2
Source: unknownTCP traffic detected without corresponding DNS query: 15.61.13.184
Source: unknownTCP traffic detected without corresponding DNS query: 15.61.13.184
Source: unknownTCP traffic detected without corresponding DNS query: 15.61.13.184
Source: unknownTCP traffic detected without corresponding DNS query: 16.115.194.128
Source: unknownTCP traffic detected without corresponding DNS query: 16.115.194.128
Source: unknownTCP traffic detected without corresponding DNS query: 16.115.194.128
Connects to country known for bullet proof hostersShow sources
Source: unknownNetwork traffic detected: IP: 213.168.35.2 Russian Federation
IP address seen in connection with other malwareShow sources
Source: Joe Sandbox ViewIP Address: 64.165.41.206 64.165.41.206
Source: Joe Sandbox ViewIP Address: 16.156.249.224 16.156.249.224
Source: Joe Sandbox ViewIP Address: 16.105.174.188 16.105.174.188
Source: Joe Sandbox ViewIP Address: 15.61.13.184 15.61.13.184
Internet Provider seen in connection with other malwareShow sources
Source: Joe Sandbox ViewASN Name: unknown unknown
Source: Joe Sandbox ViewASN Name: unknown unknown
Contains functionality to download additional files from the internetShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00807983 Sleep,socket,connect,recv,htons,htons,htons,send,htons,recv,closesocket,0_2_00807983
Found strings which match to known social media urlsShow sources
Source: 70xksu@jihui.exe, lsass.exeString found in binary or memory: hotmail equals www.hotmail.com (Hotmail)
Source: 70xksu@jihui.exe, lsass.exeString found in binary or memory: yahoo.com equals www.yahoo.com (Yahoo)

Key, Mouse, Clipboard, Microphone and Screen Capturing:

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Creates a DirectInput object (often for capturing keystrokes)Show sources
Source: 70xksu@jihui.exe, 00000000.00000000.7582793493.00000000006C0000.00000004.sdmpBinary or memory string: <HOOK MODULE="DDRAW.DLL" FUNCTION="DirectDrawCreateEx"/>

System Summary:

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Creates files inside the system directoryShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile created: C:\Windows\lsass.exeJump to behavior
Creates mutexesShow sources
Source: C:\Windows\lsass.exeMutant created: \Sessions\1\BaseNamedObjects\
Source: C:\Windows\SysWOW64\WerFault.exeMutant created: \Sessions\1\BaseNamedObjects\Local\WERReportingForProcess4708
Deletes files inside the Windows folderShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile deleted: C:\Windows\lsass.exeJump to behavior
One or more processes crashShow sources
Source: unknownProcess created: C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1160
PE file contains strange resourcesShow sources
Source: 70xksu@jihu.exeStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Source: lsass.exe.0.drStatic PE information: Resource name: RT_ICON type: GLS_BINARY_LSB_FIRST
Tries to load missing DLLsShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeSection loaded: wow64log.dllJump to behavior
Source: C:\Windows\lsass.exeSection loaded: wow64log.dllJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeSection loaded: wow64log.dllJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeSection loaded: sfc.dllJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeSection loaded: phoneinfo.dllJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeSection loaded: ext-ms-win-xblauth-console-l1.dllJump to behavior
PE file has section (not .text) which is very likely to contain packed code (zlib compression ratio < 0.011)Show sources
Source: 70xksu@jihu.exeStatic PE information: Section: UPX1 ZLIB complexity 0.992410714286
Source: lsass.exe.0.drStatic PE information: Section: UPX1 ZLIB complexity 0.992410714286
Classification labelShow sources
Source: classification engineClassification label: mal76.troj.evad.winEXE@3/8@0/7
Creates temporary filesShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile created: C:\Users\CRAIGH~1\AppData\Local\Temp\7ksa.txtJump to behavior
Reads software policiesShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeKey opened: HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\Safer\CodeIdentifiersJump to behavior
Spawns processesShow sources
Source: unknownProcess created: C:\Users\user\Desktop\70xksu@jihui.exe 'C:\Users\user\Desktop\70xksu@jihui.exe'
Source: unknownProcess created: C:\Windows\lsass.exe 'C:\Windows\lsass.exe'
Source: unknownProcess created: C:\Windows\SysWOW64\WerFault.exe C:\Windows\SysWOW64\WerFault.exe -u -p 4708 -s 1160

Data Obfuscation:

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Contains functionality to dynamically determine API callsShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00803108 GetModuleHandleA,LoadLibraryA,GetProcAddress,InternetGetConnectedState,0_2_00803108
Uses code obfuscation techniques (call, push, ret)Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00807EE0 push eax; ret 0_2_00807F0E
Source: C:\Windows\lsass.exeCode function: 1_2_00807EE0 push eax; ret 1_2_00807F0E
Sample is packed with UPXShow sources
Source: initial sampleStatic PE information: section name: UPX0
Source: initial sampleStatic PE information: section name: UPX1
Source: initial sampleStatic PE information: section name: UPX0
Source: initial sampleStatic PE information: section name: UPX1

Persistence and Installation Behavior:

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Drops PE files with benign system namesShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile created: C:\Windows\lsass.exeJump to dropped file
Drops executables to the windows directory (C:\Windows) and starts themShow sources
Source: unknownExecutable created and started: C:\Windows\lsass.exe
Drops PE filesShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile created: C:\Windows\lsass.exeJump to dropped file
Drops PE files to the windows directory (C:\Windows)Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile created: C:\Windows\lsass.exeJump to dropped file

Hooking and other Techniques for Hiding and Protection:

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Disables application error messsages (SetErrorMode)Show sources
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: FAILCRITICALERRORS | NOGPFAULTERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior
Source: C:\Windows\SysWOW64\WerFault.exeProcess information set: NOOPENFILEERRORBOXJump to behavior

Malware Analysis System Evasion:

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Found evasive API chain (may stop execution after checking mutex)Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeEvasive API call chain: CreateMutex,DecisionNodes,ExitProcessgraph_0-2064
Source: C:\Windows\lsass.exeEvasive API call chain: CreateMutex,DecisionNodes,ExitProcessgraph_1-2046
Source: C:\Windows\lsass.exeEvasive API call chain: CreateMutex,DecisionNodes,Sleepgraph_1-2046
Enumerates the file systemShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\ARM\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\Jump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exeFile opened: C:\Documents and Settings\All Users\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Application Data\Adobe\Setup\Jump to behavior
Found a high number of Window / User specific system calls (may be a loop to detect user behavior)Show sources
Source: C:\Windows\lsass.exeWindow / User API: threadDelayed 640Jump to behavior
Found decision node followed by non-executed suspicious APIsShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeDecision node followed by non-executed suspicious API: DecisionNode, Non Executed (send or recv or WinExec)graph_0-2590
Source: C:\Windows\lsass.exeDecision node followed by non-executed suspicious API: DecisionNode, Non Executed (send or recv or WinExec)graph_1-2860
May sleep (evasive loops) to hinder dynamic analysisShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exe TID: 3748Thread sleep time: -112000s >= -30000sJump to behavior
Source: C:\Users\user\Desktop\70xksu@jihui.exe TID: 3748Thread sleep count: 59 > 30Jump to behavior
Source: C:\Windows\lsass.exe TID: 4484Thread sleep count: 57 > 30Jump to behavior
Source: C:\Windows\lsass.exe TID: 4484Thread sleep count: 38 > 30Jump to behavior
Source: C:\Windows\lsass.exe TID: 4484Thread sleep count: 89 > 30Jump to behavior
Source: C:\Windows\lsass.exe TID: 4484Thread sleep count: 138 > 30Jump to behavior
Source: C:\Windows\lsass.exe TID: 4484Thread sleep count: 640 > 30Jump to behavior
Source: C:\Windows\lsass.exe TID: 4484Thread sleep time: -48000s >= -30000sJump to behavior
Queries disk information (often used to detect virtual machines)Show sources
Source: C:\Windows\SysWOW64\WerFault.exeFile opened: PhysicalDrive0Jump to behavior
Sample execution stops while process was sleeping (likely an evasion)Show sources
Source: C:\Windows\lsass.exeLast function: Thread delayed
Uses the system / local time for branch decision (may execute only at specific dates)Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00805247 GetSystemTime followed by cmp: cmp word ptr [ebp-10h], 07dch and CTI: jbe 00805288h0_2_00805247
Source: C:\Windows\lsass.exeCode function: 1_2_00805247 GetSystemTime followed by cmp: cmp word ptr [ebp-10h], 07dch and CTI: jbe 00805288h1_2_00805247
Contains functionality to enumerate / list files inside a directoryShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00804D32 lstrcat,Sleep,lstrcpy,lstrcpy,CharLowerA,strstr,strstr,strstr,strstr,strstr,lstrcpy,lstrlen,lstrcat,lstrcat,memset,FindFirstFileA,FindNextFileA,lstrcpy,lstrlen,lstrcat,lstrcat,Sleep,FindClose,0_2_00804D32
Source: C:\Windows\lsass.exeCode function: 1_2_00804D32 lstrcat,Sleep,lstrcpy,lstrcpy,CharLowerA,strstr,strstr,strstr,strstr,strstr,lstrcpy,lstrlen,lstrcat,lstrcat,memset,FindFirstFileA,FindNextFileA,lstrcpy,lstrlen,lstrcat,lstrcat,Sleep,FindClose,1_2_00804D32
May try to detect the virtual machine to hinder analysis (VM artifact strings found in memory)Show sources
Source: 70xksu@jihui.exe, 00000000.00000000.7582793493.00000000006C0000.00000004.sdmpBinary or memory string: Hyper-V RAW%SystemRoot%\system32\mswsock.dll
Program exit pointsShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeAPI call chain: ExitProcess graph end nodegraph_0-2014
Source: C:\Windows\lsass.exeAPI call chain: ExitProcess graph end nodegraph_1-2031
Queries a list of all running processesShow sources
Source: C:\Windows\SysWOW64\WerFault.exeProcess information queried: ProcessInformationJump to behavior

Anti Debugging:

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Checks for debuggers (devices)Show sources
Source: C:\Windows\SysWOW64\WerFault.exeFile opened: C:\Windows\WinSxS\FileMaps\users_craig_holland_desktop_6e4174ecf6a92c5a.cdf-ms
Checks for kernel debuggers (NtQuerySystemInformation(SystemKernelDebuggerInformation))Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeSystem information queried: KernelDebuggerInformationJump to behavior
Checks if the current process is being debuggedShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeProcess queried: DebugPortJump to behavior
Contains functionality to dynamically determine API callsShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00803108 GetModuleHandleA,LoadLibraryA,GetProcAddress,InternetGetConnectedState,0_2_00803108
Contains functionality which may be used to detect a debugger (GetProcessHeap)Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_0080418A strlen,lstrcmpi,lstrlen,GetProcessHeap,RtlAllocateHeap,memset,GetTickCount,_mbscpy,0_2_0080418A
Enables debug privilegesShow sources
Source: C:\Windows\SysWOW64\WerFault.exeProcess token adjusted: DebugJump to behavior

HIPS / PFW / Operating System Protection Evasion:

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May try to detect the Windows Explorer process (often used for injection)Show sources
Source: 70xksu@jihui.exe, 00000000.00000000.7583589880.0000000000E00000.00000002.sdmp, lsass.exe, 00000001.00000002.8642237137.0000000001030000.00000002.sdmpBinary or memory string: Shell_TrayWnd
Source: 70xksu@jihui.exe, 00000000.00000000.7583589880.0000000000E00000.00000002.sdmp, lsass.exe, 00000001.00000002.8642237137.0000000001030000.00000002.sdmpBinary or memory string: Progman
Source: 70xksu@jihui.exe, 00000000.00000000.7583589880.0000000000E00000.00000002.sdmp, lsass.exe, 00000001.00000002.8642237137.0000000001030000.00000002.sdmpBinary or memory string: ZProgram Manager
Source: 70xksu@jihui.exe, 00000000.00000000.7583589880.0000000000E00000.00000002.sdmp, lsass.exe, 00000001.00000002.8642237137.0000000001030000.00000002.sdmpBinary or memory string: Progmanlock

Language, Device and Operating System Detection:

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Contains functionality to query local / system timeShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00802DB3 lstrlen,GetLocalTime,FileTimeToLocalFileTime,FileTimeToSystemTime,GetTimeZoneInformation,lstrcat,wsprintfA,0_2_00802DB3
Contains functionality to query time zone informationShow sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00802DB3 lstrlen,GetLocalTime,FileTimeToLocalFileTime,FileTimeToSystemTime,GetTimeZoneInformation,lstrcat,wsprintfA,0_2_00802DB3

Stealing of Sensitive Information:

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Contains functionality to search for IE or Outlook window (often done to steal information)Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00802C72 FindWindowA,FindWindowA,FindWindowA,FindWindowA,RtlExitUserThread,0_2_00802C72
Source: C:\Windows\lsass.exeCode function: 1_2_00802C72 FindWindowA,FindWindowA,FindWindowA,FindWindowA,RtlExitUserThread,GetFileAttributesA,CreateThread,CreateThread,Sleep,CreateThread,Sleep,CreateThread,Sleep,1_2_00802C72

Remote Access Functionality:

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Contains functionality to open a port and listen for incoming connection (possibly a backdoor)Show sources
Source: C:\Users\user\Desktop\70xksu@jihui.exeCode function: 0_2_00807D81 malloc,memset,htons,htons,socket,socket,bind,closesocket,Sleep,htons,socket,bind,listen,CreateThread,CreateThread,malloc,memset,accept,Sleep,??3@YAXPAX@Z,0_2_00807D81
Source: C:\Windows\lsass.exeCode function: 1_2_00807D81 malloc,memset,htons,htons,socket,socket,bind,closesocket,Sleep,htons,socket,bind,listen,CreateThread,CreateThread,malloc,memset,accept,Sleep,??3@YAXPAX@Z,1_2_00807D81

Behavior Graph

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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
behaviorgraph top1 signatures2 2 Behavior Graph ID: 116884 Sample: 70xksu@jihui.com Startdate: 15/03/2019 Architecture: WINDOWS Score: 76 29 Antivirus detection for submitted file 2->29 31 Detected TCP or UDP traffic on non-standard ports 2->31 33 Drops executables to the windows directory (C:\Windows) and starts them 2->33 35 Antivirus detection for unpacked file 2->35 6 70xksu@jihui.exe 1 4 2->6         started        11 lsass.exe 192 2->11         started        process3 dnsIp4 19 64.165.41.206, 1042 unknown United States 6->19 21 192.168.6.216, 1042 unknown unknown 6->21 15 C:\Windows\lsass.exe, PE32 6->15 dropped 17 C:\Windows\lsass.exe:Zone.Identifier, ASCII 6->17 dropped 37 Found evasive API chain (may stop execution after checking mutex) 6->37 39 Drops PE files with benign system names 6->39 13 WerFault.exe 25 10 6->13         started        23 15.61.13.184, 1042 unknown United States 11->23 25 16.105.174.188, 1042 unknown United States 11->25 27 3 other IPs or domains 11->27 41 Antivirus detection for dropped file 11->41 file5 43 Detected TCP or UDP traffic on non-standard ports 25->43 signatures6 process7

Simulations

Behavior and APIs

TimeTypeDescription
05:03:44API Interceptor1x Sleep call for process: 70xksu@jihui.exe modified
05:03:49AutostartRun: HKLM\Software\Microsoft\Windows\CurrentVersion\Run Traybar C:\Windows\lsass.exe

Antivirus Detection

Initial Sample

SourceDetectionScannerLabelLink
70xksu@jihu.exe100%AviraWORM/Mydoom.L.1

Dropped Files

SourceDetectionScannerLabelLink
C:\Windows\lsass.exe100%AviraWORM/Mydoom.L.1

Unpacked PE Files

SourceDetectionScannerLabelLinkDownload
0.2.70xksu@jihui.exe.800000.0.unpack100%AviraTR/Agent.Blkhl.damDownload File
0.0.70xksu@jihui.exe.800000.1.unpack100%AviraTR/Agent.Blkhl.damDownload File
1.1.lsass.exe.800000.0.unpack100%AviraTR/Agent.Blkhl.damDownload File
1.2.lsass.exe.800000.0.unpack100%AviraTR/Agent.Blkhl.damDownload File
1.0.lsass.exe.800000.0.unpack100%AviraTR/Agent.Blkhl.damDownload File
0.0.70xksu@jihui.exe.800000.2.unpack100%AviraTR/Agent.Blkhl.damDownload File
0.1.70xksu@jihui.exe.800000.0.unpack100%AviraTR/Agent.Blkhl.damDownload File
0.0.70xksu@jihui.exe.800000.0.unpack100%AviraTR/Agent.Blkhl.damDownload File

Domains

No Antivirus matches

URLs

No Antivirus matches

Yara Overview

Initial Sample

No yara matches

PCAP (Network Traffic)

No yara matches

Dropped Files

No yara matches

Memory Dumps

No yara matches

Unpacked PEs

No yara matches

Joe Sandbox View / Context

IPs

MatchAssociated Sample Name / URLSHA 256DetectionLinkContext
16.115.194.12834Messag.exeGet hashmaliciousBrowse
    Message.exeGet hashmaliciousBrowse
      63slguan@jihu.exeGet hashmaliciousBrowse
        25attachmen.exeGet hashmaliciousBrowse
          213.168.35.2 .exeGet hashmaliciousBrowse
            56documen.exeGet hashmaliciousBrowse
              1.htm .exeGet hashmaliciousBrowse
                64.165.41.20632messag.exeGet hashmaliciousBrowse
                  47zplin@jihu.exeGet hashmaliciousBrowse
                    5messag.exeGet hashmaliciousBrowse
                      43ghostviewer@youtube.exeGet hashmaliciousBrowse
                        .exeGet hashmaliciousBrowse
                          .exeGet hashmaliciousBrowse
                            16.156.249.224.html .exeGet hashmaliciousBrowse
                              29text.html .exeGet hashmaliciousBrowse
                                50messag.exeGet hashmaliciousBrowse
                                  23transcrip.exeGet hashmaliciousBrowse
                                    19transcrip.exeGet hashmaliciousBrowse
                                      16.105.174.18851mai.exeGet hashmaliciousBrowse
                                        9documen.exeGet hashmaliciousBrowse
                                          11Message.exeGet hashmaliciousBrowse
                                            118-22qhzhang@jihu.exeGet hashmaliciousBrowse
                                              document.exeGet hashmaliciousBrowse
                                                15.61.13.18423transcrip.exeGet hashmaliciousBrowse
                                                  55message.html .exeGet hashmaliciousBrowse
                                                    p08@dgdwzp.comGet hashmaliciousBrowse
                                                      11message.exeGet hashmaliciousBrowse
                                                        39EG.exeGet hashmaliciousBrowse
                                                          .exeGet hashmaliciousBrowse
                                                            youtube3.comGet hashmaliciousBrowse
                                                              4466hKOff5cT.exeGet hashmaliciousBrowse
                                                                rsms@vnjg.comGet hashmaliciousBrowse
                                                                  49Messag.exeGet hashmaliciousBrowse
                                                                    23lette.exeGet hashmaliciousBrowse
                                                                      .exeGet hashmaliciousBrowse
                                                                        .exeGet hashmaliciousBrowse
                                                                          3tex.exeGet hashmaliciousBrowse
                                                                            55dgndzo.exeGet hashmaliciousBrowse
                                                                              52attachmen.exeGet hashmaliciousBrowse
                                                                                49transcrip.exeGet hashmaliciousBrowse
                                                                                  27mai.exeGet hashmaliciousBrowse

                                                                                    Domains

                                                                                    No context

                                                                                    ASN

                                                                                    MatchAssociated Sample Name / URLSHA 256DetectionLinkContext
                                                                                    unknownrequest.docGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    FERK444259.docGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    b392e93a5753601db564e6f2dc6a945aac3861bc31e2c1e5e7f3cd4e5bb150a4.jsGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    Setup.exeGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    base64.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    file.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    Spread sheet 2.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    request_08.30.docGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    P_2038402.xlsxGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    48b1cf747a678641566cd1778777ca72.apkGet hashmaliciousBrowse
                                                                                    • 192.168.0.22
                                                                                    seu nome na lista de favorecidos.exeGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    Adm_Boleto.via2.comGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    QuitacaoVotorantim345309.exeGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    pptxb.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    unknownrequest.docGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    FERK444259.docGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    b392e93a5753601db564e6f2dc6a945aac3861bc31e2c1e5e7f3cd4e5bb150a4.jsGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    Setup.exeGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    base64.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    file.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    Spread sheet 2.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    request_08.30.docGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    P_2038402.xlsxGet hashmaliciousBrowse
                                                                                    • 192.168.0.44
                                                                                    48b1cf747a678641566cd1778777ca72.apkGet hashmaliciousBrowse
                                                                                    • 192.168.0.22
                                                                                    seu nome na lista de favorecidos.exeGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    Adm_Boleto.via2.comGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    QuitacaoVotorantim345309.exeGet hashmaliciousBrowse
                                                                                    • 192.168.0.40
                                                                                    pptxb.pdfGet hashmaliciousBrowse
                                                                                    • 192.168.0.40

                                                                                    JA3 Fingerprints

                                                                                    No context

                                                                                    Dropped Files

                                                                                    No context

                                                                                    Screenshots

                                                                                    Thumbnails

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