File name:

4567865456.doc

Full analysis: https://app.any.run/tasks/bd88d0d9-b8f1-4d45-97d1-7856abc041fa
Verdict: Malicious activity
Threats:

GuLoader is an advanced downloader written in shellcode. It’s used by criminals to distribute other malware, notably trojans, on a large scale. It’s infamous for using anti-detection and anti-analysis capabilities.

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Analysis date: July 12, 2023, 06:48:52
OS: Windows 7 Professional Service Pack 1 (build: 7601, 64 bit)
Tags:
exploit
cve-2017-11882
loader
guloader
Indicators:
MIME: text/rtf
File info: Rich Text Format data, version 1
MD5:

CA1A99D73B9701B2A26817352C6E2935

SHA1:

2F670BD6F2FD13D3DE09DB2B8B8149456E1066C3

SHA256:

56BA3547BFF5214AFE4D7CCD370DEED7F43F44A2ACCAB47D9360493186A32DDC

SSDEEP:

768:TFx0XaIsnPRIa4fwJMjxicDhKSv1k9/xIHVo6jQ5PbTZlx9:Tf0Xvx3EMjxicDhKo1k9UoSSPbTbx9

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Application was dropped or rewritten from another process

      • euroenxdn5871.exe (PID: 2284)

    • Equation Editor starts application (CVE-2017-11882)

      • EQNEDT32.EXE (PID: 2852)

    • Loads dropped or rewritten executable

      • euroenxdn5871.exe (PID: 2284)

    • Suspicious connection from the Equation Editor

      • EQNEDT32.EXE (PID: 2852)

    • GULOADER detected by memory dumps

      • euroenxdn5871.exe (PID: 2284)

  • SUSPICIOUS

    • Reads the Internet Settings

      • EQNEDT32.EXE (PID: 2852)

    • Executable content was dropped or overwritten

      • EQNEDT32.EXE (PID: 2852)
      • euroenxdn5871.exe (PID: 2284)

    • Connects to the server without a host name

      • EQNEDT32.EXE (PID: 2852)

    • The process creates files with name similar to system file names

      • euroenxdn5871.exe (PID: 2284)

    • Process requests binary or script from the Internet

      • EQNEDT32.EXE (PID: 2852)

  • INFO

    • Checks supported languages

      • EQNEDT32.EXE (PID: 2852)
      • euroenxdn5871.exe (PID: 2284)

    • Reads the computer name

      • EQNEDT32.EXE (PID: 2852)
      • euroenxdn5871.exe (PID: 2284)

    • Checks proxy server information

      • EQNEDT32.EXE (PID: 2852)

    • The process checks LSA protection

      • EQNEDT32.EXE (PID: 2852)
      • euroenxdn5871.exe (PID: 2284)

    • Reads the machine GUID from the registry

      • EQNEDT32.EXE (PID: 2852)

    • Creates files or folders in the user directory

      • euroenxdn5871.exe (PID: 2284)
      • EQNEDT32.EXE (PID: 2852)

    • Create files in a temporary directory

      • euroenxdn5871.exe (PID: 2284)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.rtf | Rich Text Format (28.5)
No data.
screenshotscreenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
34
Monitored processes
3
Malicious processes
2
Suspicious processes
0

Behavior graph

Click at the process to see the details
start drop and start winword.exe no specs eqnedt32.exe #GULOADER euroenxdn5871.exe

Process information

PID
CMD
Path
Indicators
Parent process
2284"C:\Users\admin\AppData\Roaming\euroenxdn5871.exe"C:\Users\admin\AppData\Roaming\euroenxdn5871.exe
EQNEDT32.EXE
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Version:
1.1.0.0
Modules
Images
c:\windows\system32\ntdll.dll
c:\windows\system32\wow64.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\users\admin\appdata\roaming\euroenxdn5871.exe
c:\windows\system32\kernel32.dll
c:\windows\syswow64\kernel32.dll
c:\windows\system32\user32.dll
c:\windows\syswow64\kernelbase.dll
c:\windows\syswow64\gdi32.dll
2428"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\admin\AppData\Local\Temp\4567865456.doc.rtf"C:\Program Files\Microsoft Office\Office14\WINWORD.EXE—explorer.exe
User:
admin
Company:
Microsoft Corporation
Integrity Level:
MEDIUM
Description:
Microsoft Word
Exit code:
0
Version:
14.0.5123.5000
Modules
Images
c:\program files\microsoft office\office14\winword.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\winsxs\amd64_microsoft.vc90.crt_1fc8b3b9a1e18e3b_9.0.30729.6161_none_08e61857a83bc251\msvcr90.dll
c:\windows\system32\advapi32.dll
c:\windows\winsxs\amd64_microsoft.windows.common-controls_6595b64144ccf1df_5.82.7601.18837_none_a4d981ff711297b6\comctl32.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\sechost.dll
c:\windows\system32\gdi32.dll
2852"C:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -EmbeddingC:\Program Files\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
svchost.exe
User:
admin
Company:
Design Science, Inc.
Integrity Level:
MEDIUM
Description:
Microsoft Equation Editor
Exit code:
0
Version:
00110900
Modules
Images
c:\program files\common files\microsoft shared\equation\eqnedt32.exe
c:\windows\system32\ntdll.dll
c:\windows\syswow64\ntdll.dll
c:\windows\system32\wow64win.dll
c:\windows\system32\wow64cpu.dll
c:\windows\system32\kernel32.dll
c:\windows\syswow64\kernel32.dll
c:\windows\system32\user32.dll
c:\windows\system32\wow64.dll
c:\windows\syswow64\kernelbase.dll
Total events
2 518
Read events
2 149
Write events
245
Delete events
124

Modification events

(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1033
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1041
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1042
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1046
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1036
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1031
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1040
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1049
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:3082
Value:
On
(PID) Process:(2428) WINWORD.EXEKey:HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Common\LanguageResources\EnabledLanguages
Operation:writeName:1055
Value:
On
Executable files
4
Suspicious files
2
Text files
2
Unknown types
0

Dropped files

PID
Process
Filename
Type
2428WINWORD.EXEC:\Users\admin\AppData\Local\Temp\CVR4AB7.tmp.cvr —
MD5:—
SHA256:—
2284euroenxdn5871.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Gavstrikkernes\Coronaled182\Ambatch\AsProcessHelper.dllexecutable
MD5:FC9EE63D7C846FBEA1A615068F26A922
SHA256:173096B559F6F0CC183578EEDE448AEB75B37FC34CC6988814D9F285A546F4AA
2284euroenxdn5871.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Gavstrikkernes\Coronaled182\Beskyttende\Kulkldre\emblem-system.pngimage
MD5:7FAA499549F509BF9DACDAD5BF453670
SHA256:22B68E4EDB3ED75F947BEF9AE94919BEA7DD2B40650307AFA235E2FC56133205
2284euroenxdn5871.exeC:\Users\admin\AppData\Local\Temp\nsm545F.tmp\System.dllexecutable
MD5:BE2621A78A13A56CF09E00DD98488360
SHA256:852047023BA0CAE91C7A43365878613CFB4E64E36FF98C460E113D5088D68EF5
2284euroenxdn5871.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Gavstrikkernes\Coronaled182\palmehytte\right_arrow_disabled.pngimage
MD5:B289B17A2D497A07152F3651AE7F4098
SHA256:60041AF52ADA6D050BE1E341F09EE8AB2E59EB939FD8A0A93173DD7DD9132435
2284euroenxdn5871.exeC:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Gavstrikkernes\Coronaled182\Reformationernes\Prophage\Denationaliserendes.Hje13binary
MD5:3568C7BB794F15D97926D7228BC2DABA
SHA256:377E74115EEF7F269355C03E23B245D5C8C86B0DD6DE21DE99B11E4A9E8C2385
2852EQNEDT32.EXEC:\Users\admin\AppData\Roaming\euroenxdn5871.exeexecutable
MD5:109DBD7130E7C7E519EDDAC87CCBC34C
SHA256:40B6DC77998B71663FD29997962BEC3B46647E8EE70CF3D579AED14EAD46D660
2428WINWORD.EXEC:\Users\admin\AppData\Local\Temp\~$67865456.doc.rtfbinary
MD5:FE9598245CBE04E6CA8CDE3B4F41F99D
SHA256:28B4F1B18CB9D61CAA701B8D348F637853F426454B9B23CAB870D275C71AA8E0
2852EQNEDT32.EXEC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\BDW1XBVN\Historiers[1].exeexecutable
MD5:109DBD7130E7C7E519EDDAC87CCBC34C
SHA256:40B6DC77998B71663FD29997962BEC3B46647E8EE70CF3D579AED14EAD46D660
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
4
DNS requests
0
Threats
6

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2852
EQNEDT32.EXE
GET
200
87.121.221.212:80
http://87.121.221.212/Historiers.exe
US
executable
388 Kb
malicious
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
4
System
192.168.100.255:137
—
—
—
whitelisted
2852
EQNEDT32.EXE
87.121.221.212:80
—
OMER AY
US
malicious
328
svchost.exe
224.0.0.252:5355
—
—
—
unknown

DNS requests

No data

Threats

PID
Process
Class
Message
2852
EQNEDT32.EXE
Potentially Bad Traffic
ET INFO Executable Download from dotted-quad Host
2852
EQNEDT32.EXE
A Network Trojan was detected
ET MALWARE Likely Evil EXE download from dotted Quad by MSXMLHTTP M1
2852
EQNEDT32.EXE
Potential Corporate Privacy Violation
ET POLICY PE EXE or DLL Windows file download HTTP
2852
EQNEDT32.EXE
A Network Trojan was detected
ET MALWARE Likely Evil EXE download from dotted Quad by MSXMLHTTP M2
2852
EQNEDT32.EXE
Potentially Bad Traffic
ET HUNTING SUSPICIOUS Dotted Quad Host MZ Response
1 ETPRO signatures available at the full report
No debug info
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Reports
4567865456.doc