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Windows
Analysis Report
dllhost.exe
Overview
General Information
| Sample name: | dllhost.exe |
| Analysis ID: | 1431562 |
| MD5: | 0a9ba6af531afe7fa5e4fb973852d863 |
| SHA1: | 5d0b0222b0f37a85d64b9283611e940313e21348 |
| SHA256: | 8a8116429189d631fc00596278c92a363ec734f0cde76f52c7456fdc9c56e384 |
| Infos: |  |
 | |
Detection
| Score: | 21 |
| Range: | 0 - 100 |
| Whitelisted: | false |
| Confidence: | 80% |
Signatures
Sigma detected: System File Execution Location Anomaly
Program does not show much activity (idle)
Uses 32bit PE files
Classification
- System is w10x64_ra
dllhost.exe (PID: 6248 cmdline: "C:\Users\ user\Deskt op\dllhost .exe" MD5: 0A9BA6AF531AFE7FA5E4FB973852D863)
- cleanup
⊘No configs have been found
⊘No yara matches
System Summary |   |
|---|
| Source: | Author: Florian Roth (Nextron Systems), Patrick Bareiss, Anton Kutepov, oscd.community, Nasreddine Bencherchali: | ||
⊘No Snort rule has matched
Click to jump to signature section
Show All Signature Results
| Source: | Static PE information: | ||
| Source: | Binary string: | ||
| Source: | Static PE information: | ||
| Source: | Classification label: | ||
| Source: | Static PE information: | ||
| Source: | Key opened: | Jump to behavior | ||
| Source: | Section loaded: | Jump to behavior | ||
| Source: | Static PE information: | ||
| Source: | Binary string: | ||
| Source: | Thread injection, dropped files, key value created, disk infection and DNS query: | ||
| Source: | Thread injection, dropped files, key value created, disk infection and DNS query: | ||
| Reconnaissance | Resource Development | Initial Access | Execution | Persistence | Privilege Escalation | Defense Evasion | Credential Access | Discovery | Lateral Movement | Collection | Command and Control | Exfiltration | Impact |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Gather Victim Identity Information | Acquire Infrastructure | Valid Accounts | Windows Management Instrumentation | 1 DLL Side-Loading | 1 DLL Side-Loading | 1 DLL Side-Loading | OS Credential Dumping | 1 System Information Discovery | Remote Services | Data from Local System | Data Obfuscation | Exfiltration Over Other Network Medium | Abuse Accessibility Features |
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
InternetThis section contains all screenshots as thumbnails, including those not shown in the slideshow.
| Source | Detection | Scanner | Label | Link |
|---|---|---|---|---|
| 0% | ReversingLabs | |||
| 1% | Virustotal | Browse |
⊘No Antivirus matches
⊘No Antivirus matches
⊘No Antivirus matches
⊘No Antivirus matches
| Joe Sandbox version: | 40.0.0 Tourmaline |
| Analysis ID: | 1431562 |
| Start date and time: | 2024-04-25 13:11:57 +02:00 |
| Joe Sandbox product: | CloudBasic |
| Overall analysis duration: | 0h 3m 27s |
| Hypervisor based Inspection enabled: | false |
| Report type: | full |
| Cookbook file name: | defaultwindowsinteractivecookbook.jbs |
| Analysis system description: | Windows 10 x64 22H2 with Office Professional Plus 2019, Chrome 117, Firefox 118, Adobe Reader DC 23, Java 8 Update 381, 7zip 23.01 |
| Number of analysed new started processes analysed: | 13 |
| 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: |
|
| Analysis Mode: | default |
| Analysis stop reason: | Timeout |
| Sample name: | dllhost.exe |
| Detection: | SUS |
| Classification: | sus21.winEXE@1/0@0/0 |
| Cookbook Comments: |
|
- Exclude process from analysis (whitelisted): MpCmdRun.exe, dllhost.exe, SIHClient.exe, SgrmBroker.exe, MoUsoCoreWorker.exe, conhost.exe, svchost.exe
- Excluded domains from analysis (whitelisted): fs.microsoft.com, slscr.update.microsoft.com, fe3cr.delivery.mp.microsoft.com
- Not all processes where analyzed, report is missing behavior information
⊘No simulations
⊘No created / dropped files found
| File type: | |
| Entropy (8bit): | 4.714421863047094 |
| TrID: |
|
| File name: | dllhost.exe |
| File size: | 5'120 bytes |
| MD5: | 0a9ba6af531afe7fa5e4fb973852d863 |
| SHA1: | 5d0b0222b0f37a85d64b9283611e940313e21348 |
| SHA256: | 8a8116429189d631fc00596278c92a363ec734f0cde76f52c7456fdc9c56e384 |
| SHA512: | 1fb8c0f37292ba59ec78344507e41de341bc877edb40e9e77959b5badf62af05034bb9e6969fefc0b2f1236373cb9963c145663c92757193d3025967d2393d13 |
| SSDEEP: | 96:oCti1ouW2maxZmO2w22NU/Mn3gnI/rEWLQaXpWwG:oC8ouWDimO2fZMnwnI/wWLT5W |
| TLSH: | 47B1C6139BAE8D2CF8A20770253E2B63A42ABA304B65539F9157626E3DB5581CC70737 |
| File Content Preview: | MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......*R..n3.An3.An3.A.<.Ao3.An3.AM3.A.<.Ai3.A.<.Aa3.A.<.Ao3.A.<.Al3.A.<.Ao3.ARichn3.A................PE..L...eQ.H................... |
 | |
| Icon Hash: | 90cececece8e8eb0 |
| Entrypoint: | 0x100143c |
| Entrypoint Section: | .text |
| Digitally signed: | false |
| Imagebase: | 0x1000000 |
| Subsystem: | windows gui |
| Image File Characteristics: | RELOCS_STRIPPED, EXECUTABLE_IMAGE, LINE_NUMS_STRIPPED, LOCAL_SYMS_STRIPPED, 32BIT_MACHINE |
| DLL Characteristics: | TERMINAL_SERVER_AWARE |
| Time Stamp: | 0x48025165 [Sun Apr 13 18:31:01 2008 UTC] |
| TLS Callbacks: | |
| CLR (.Net) Version: | |
| OS Version Major: | 5 |
| OS Version Minor: | 1 |
| File Version Major: | 5 |
| File Version Minor: | 1 |
| Subsystem Version Major: | 5 |
| Subsystem Version Minor: | 1 |
| Import Hash: | 4ff1f68ccd29a7b7095c4514d9d1011d |
| Instruction |
|---|
| push 00000070h |
| push 010010B8h |
| call 00007FEF211A148Dh |
| xor ebx, ebx |
| push ebx |
| mov edi, dword ptr [01001008h] |
| call edi |
| cmp word ptr [eax], 5A4Dh |
| jne 00007FEF211A12B1h |
| mov ecx, dword ptr [eax+3Ch] |
| add ecx, eax |
| cmp dword ptr [ecx], 00004550h |
| jne 00007FEF211A12A4h |
| movzx eax, word ptr [ecx+18h] |
| cmp eax, 0000010Bh |
| je 00007FEF211A12B1h |
| cmp eax, 0000020Bh |
| je 00007FEF211A1297h |
| mov dword ptr [ebp-1Ch], ebx |
| jmp 00007FEF211A12B9h |
| cmp dword ptr [ecx+00000084h], 0Eh |
| jbe 00007FEF211A1284h |
| xor eax, eax |
| cmp dword ptr [ecx+000000F8h], ebx |
| jmp 00007FEF211A12A0h |
| cmp dword ptr [ecx+74h], 0Eh |
| jbe 00007FEF211A1274h |
| xor eax, eax |
| cmp dword ptr [ecx+000000E8h], ebx |
| setne al |
| mov dword ptr [ebp-1Ch], eax |
| mov dword ptr [ebp-04h], ebx |
| push 00000002h |
| call dword ptr [01001048h] |
| pop ecx |
| or dword ptr [01002030h], FFFFFFFFh |
| or dword ptr [01002034h], FFFFFFFFh |
| call dword ptr [0100104Ch] |
| mov ecx, dword ptr [0100202Ch] |
| mov dword ptr [eax], ecx |
| call dword ptr [01001050h] |
| mov ecx, dword ptr [01002028h] |
| mov dword ptr [eax], ecx |
| mov eax, dword ptr [01001054h] |
| mov eax, dword ptr [eax] |
| mov dword ptr [01002038h], eax |
| call 00007FEF211A13DFh |
| cmp dword ptr [0100201Ch], ebx |
| jne 00007FEF211A129Eh |
| push 01001636h |
| call dword ptr [01001058h] |
| pop ecx |
| call 00007FEF211A13AFh |
| Name | Virtual Address | Virtual Size | Is in Section |
|---|---|---|---|
| IMAGE_DIRECTORY_ENTRY_EXPORT | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_IMPORT | 0x16b0 | 0x50 | .text |
| IMAGE_DIRECTORY_ENTRY_RESOURCE | 0x3000 | 0x3d8 | .rsrc |
| IMAGE_DIRECTORY_ENTRY_EXCEPTION | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_SECURITY | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_BASERELOC | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_DEBUG | 0x1090 | 0x1c | .text |
| IMAGE_DIRECTORY_ENTRY_COPYRIGHT | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_GLOBALPTR | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_TLS | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG | 0x10c8 | 0x40 | .text |
| IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT | 0x250 | 0x44 | |
| IMAGE_DIRECTORY_ENTRY_IAT | 0x1000 | 0x90 | .text |
| IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR | 0x0 | 0x0 | |
| IMAGE_DIRECTORY_ENTRY_RESERVED | 0x0 | 0x0 |
| Name | Virtual Address | Virtual Size | Raw Size | MD5 | Xored PE | ZLIB Complexity | File Type | Entropy | Characteristics |
|---|---|---|---|---|---|---|---|---|---|
| .text | 0x1000 | 0x9f6 | 0xa00 | 15a911535a0661dee75e3e277cfd669d | False | 0.684765625 | data | 6.167483148276392 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ |
| .data | 0x2000 | 0x3c | 0x200 | 1b87fa2b9d8767271a0a79f001925632 | False | 0.0625 | Matlab v4 mat-file (little endian) , numeric, rows 16782001, columns 0 | 0.19586940608732903 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ, IMAGE_SCN_MEM_WRITE |
| .rsrc | 0x3000 | 0x3d8 | 0x400 | 83956140f8104b936854f316092a5fdc | False | 0.4365234375 | data | 3.300476873219901 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ |
| Name | RVA | Size | Type | Language | Country | ZLIB Complexity |
|---|---|---|---|---|---|---|
| RT_VERSION | 0x3060 | 0x374 | data | English | United States | 0.4683257918552036 |
| DLL | Import |
|---|---|
| msvcrt.dll | _controlfp, _except_handler3, _c_exit, __set_app_type, __p__fmode, __p__commode, _adjust_fdiv, __setusermatherr, _initterm, __getmainargs, _acmdln, exit, _cexit, _XcptFilter, _exit |
| KERNEL32.dll | TerminateProcess, GetStartupInfoA, GetModuleHandleA, SetUnhandledExceptionFilter, UnhandledExceptionFilter, GetSystemTimeAsFileTime, GetCurrentProcessId, GetCurrentThreadId, GetTickCount, QueryPerformanceCounter, lstrcmpiA, MultiByteToWideChar, GetCurrentProcess, lstrlenA |
| ole32.dll | CoRegisterSurrogateEx, CoInitializeEx, CLSIDFromString, CoUninitialize |
| Language of compilation system | Country where language is spoken | Map |
|---|---|---|
| English | United States |  |
Key Decision
Richest Path
Thread / callback creation
Lower opacity -> Library Node⊘No network behavior found
| Target ID: | 0 |
| Start time: | 13:12:28 |
| Start date: | 25/04/2024 |
| Path: | C:\Users\user\Desktop\dllhost.exe |
| Wow64 process (32bit): | true |
| Commandline: | |
| Imagebase: | 0x1000000 |
| File size: | 5'120 bytes |
| MD5 hash: | 0A9BA6AF531AFE7FA5E4FB973852D863 |
| Has elevated privileges: | true |
| Has administrator privileges: | true |
| Programmed in: | C, C++ or other language |
| Reputation: | low |
| Has exited: | true |
⊘No disassembly