MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2051138003c024d619292ea1a12d0b813946bc88d885d8a1c49478804acb2d92. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


GuLoader


Vendor detections: 12


Maldoc score: 4


Intelligence 12 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2051138003c024d619292ea1a12d0b813946bc88d885d8a1c49478804acb2d92
SHA3-384 hash: f1877e15101beca001cc752f7602b205efd011177f10510d501613daa36bd4e82a81045f350e8e9885d5ca8fcf940f80
SHA1 hash: 694ee80aa6321f32806f577b60f137f97c9af165
MD5 hash: 48f12b48462cf39bde7f580c1503e350
humanhash: stairway-river-kansas-music
File name:Invoices.xls
Download: download sample
Signature GuLoader
Create hunting rule
File size:444'416 bytes
First seen:2023-12-15 18:28:02 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 12288:tCWQmmme6v3QLQuEl4HWg0dhTVSZFi9FuQ3hdVDUFhJKq:cWQmmav30xjAXZSZ8IRKq
TLSH T12C940210314DECB9E1871BFE99B5B08E800CBDB3B6C1A1C7799A730D8836F9B5A57605
TrID 46.5% (.XLS) Microsoft Excel sheet (alternate) (56500/1/4)
26.7% (.XLS) Microsoft Excel sheet (32500/1/3)
20.1% (.XLS) Microsoft Excel sheet (alternate) (24500/1/2)
6.5% (.) Generic OLE2 / Multistream Compound (8000/1)
Reporter abuse_ch
Tags:cve-2017-0199 GuLoader xls

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE id
Maldoc score: 4
OLE dump

MalwareBazaar was able to identify 20 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2244 bytesDocumentSummaryInformation
3200 bytesSummaryInformation
494 bytesMBD00109452/CompObj
562 bytesMBD00109452/Ole
6141190 bytesMBD00109452/CONTENTS
799 bytesMBD00109453/CompObj
822194 bytesMBD00109453/Package
999 bytesMBD00109454/CompObj
1091441 bytesMBD00109454/Package
11928 bytesMBD00109455/Ole
12169852 bytesWorkbook
13527 bytes_VBA_PROJECT_CUR/PROJECT
14104 bytes_VBA_PROJECT_CUR/PROJECTwm
15977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
16977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
17977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
18985 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
192644 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
20553 bytes_VBA_PROJECT_CUR/VBA/dir
OLE vba

MalwareBazaar was able to extract and deobfuscate VBA script(s) the following information from OLE objects embedded in this file using olevba:

TypeKeywordDescription
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)

Intelligence

File Origin
# of uploads :
1
# of downloads :
297
Origin country :
NL NL
Vendor Threat Intelligence
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/467710/
Detection(s):
Sanesecurity.Badmacro.Xls.BadUsr1.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.VBA.Agent-16.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Trojan.Script.4681.26133.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Sending a custom TCP request
Creating a window
Searching for synchronization primitives
Launching a process
Сreating synchronization primitives
Creating a process with a hidden window
Sending an HTTP GET request
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/2051138003c024d619292ea1a12d0b813946bc88d885d8a1c49478804acb2d92/results/dashboard
Payload URLs
URL
File name
http://172.245.208.4/huj/microsoftdecidedtodeleteentirethingsfromthepcforcleaneverything.Doc
Embedded Ole
Behaviour
SuspiciousRTF detected
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros
Link:
https://www.filescan.io/uploads/657c9ab8b4e856b7281b0730/reports/c92acfcd-c37a-4682-8abc-a6c2a64f7b27/overview
Verdict:
Malicious
Labled as:
CVE-2017-0199
Link:
https://www.hybrid-analysis.com/sample/2051138003c024d619292ea1a12d0b813946bc88d885d8a1c49478804acb2d92
Label:
Benign
Suspicious Score:
3.2/10
Score Malicious:
32%
Score Benign:
68%
Link:
https://www.malware.ai/gui/files/?id=2ecc9d71-7d70-46b0-ad7e-eed5f30b261a
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/2051138003c024d619292ea1a12d0b813946bc88d885d8a1c49478804acb2d92
Details
Document With Few Pages
Document contains between one and three pages of content. Most malicious documents are sparse in page count.
Result
Threat name:
FormBook, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1362929
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
DLL side loading technique detected
Document embeds suspicious OLE2 link
Excel sheet contains many unusual embedded objects
Installs new ROOT certificates
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
Microsoft Office launches external ms-search protocol handler (WebDAV)
Office equation editor drops PE file
Office equation editor establishes network connection
Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802)
Office viewer loads remote template
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Searches for Windows Mail specific files
Shellcode detected
Sigma detected: EQNEDT32.EXE connecting to internet
Sigma detected: File Dropped By EQNEDT32EXE
Snort IDS alert for network traffic
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Very long command line found
Writes to foreign memory regions
Yara detected FormBook
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1362929 Sample: Invoices.xls Startdate: 15/12/2023 Architecture: WINDOWS Score: 100 90 Snort IDS alert for network traffic 2->90 92 Malicious sample detected (through community Yara rule) 2->92 94 Antivirus detection for URL or domain 2->94 96 11 other signatures 2->96 12 EQNEDT32.EXE 12 2->12         started        16 WINWORD.EXE 346 53 2->16         started        18 EXCEL.EXE 58 63 2->18         started        21 AcroRd32.exe 27 2->21         started        process3 dnsIp4 58 C:\Users\user\AppData\Roaming\wlanext.exe, PE32 12->58 dropped 60 C:\Users\user\AppData\...\wlanext[1].exe, PE32 12->60 dropped 114 Office equation editor establishes network connection 12->114 116 Office equation editor starts processes (likely CVE 2017-11882 or CVE-2018-0802) 12->116 23 wlanext.exe 23 12->23         started        62 microsoftdecidedto...neverything.Doc.url, MS 16->62 dropped 64 C:\Users\user\...\huj on 172.245.208.4.url, MS 16->64 dropped 66 ~WRF{2457A1D4-D866...3-017DB3386A22}.tmp, Composite 16->66 dropped 68 C:\Users\user\AppData\Local\...\8E75CB3C.doc, ISO-8859 16->68 dropped 118 Microsoft Office launches external ms-search protocol handler (WebDAV) 16->118 120 Office viewer loads remote template 16->120 122 Microsoft Office drops suspicious files 16->122 72 172.245.208.4, 49164, 49165, 49166 AS-COLOCROSSINGUS United States 18->72 70 microsoftdecidedto...aneverything[1].doc, ISO-8859 18->70 dropped 27 RdrCEF.exe 21->27         started        file5 signatures6 process7 file8 52 C:\Users\user\AppData\Roaming\...pha.Aut, data 23->52 dropped 54 C:\Users\user\AppData\Local\...\nsk1891.tmp, data 23->54 dropped 104 Machine Learning detection for dropped file 23->104 29 powershell.exe 5 23->29         started        signatures9 process10 signatures11 124 Suspicious powershell command line found 29->124 126 Very long command line found 29->126 32 powershell.exe 2 29->32         started        process12 signatures13 86 Searches for Windows Mail specific files 32->86 88 Writes to foreign memory regions 32->88 35 wab.exe 9 32->35         started        process14 dnsIp15 74 www.synergyinnovationgroup.com 35->74 76 synergyinnovationgroup.com 65.60.36.22, 443, 49172 SINGLEHOP-LLCUS United States 35->76 98 Installs new ROOT certificates 35->98 100 Maps a DLL or memory area into another process 35->100 39 oscUBVkAxfcsuH.exe 35->39 injected signatures16 process17 signatures18 102 Maps a DLL or memory area into another process 39->102 42 auditpol.exe 39->42         started        process19 dnsIp20 78 www.sqlite.org 45.33.6.223, 49174, 49175, 80 LINODE-APLinodeLLCUS United States 42->78 56 C:\Users\user\AppData\Local\...\sqlite3.dll, PE32 42->56 dropped 106 Tries to steal Mail credentials (via file / registry access) 42->106 108 Tries to harvest and steal browser information (history, passwords, etc) 42->108 110 Maps a DLL or memory area into another process 42->110 112 3 other signatures 42->112 47 oscUBVkAxfcsuH.exe 42->47 injected 50 firefox.exe 42->50         started        file21 signatures22 process23 dnsIp24 80 www.caffleoraret.cyou 109.123.121.243, 49180, 49181, 49182 UK2NET-ASGB United Kingdom 47->80 82 www.ageingisthedisease.com 47->82 84 2 other IPs or domains 47->84
Detection:
cve-2017-11882-shellcode
Create hunting rule
Link:
https://mwdb.cert.pl/sample/2051138003c024d619292ea1a12d0b813946bc88d885d8a1c49478804acb2d92/
Threat name:
Document-Office.Exploit.CVE-2017-0199
Create hunting rule
Status:
Malicious
First seen:
2023-12-15 06:16:40 UTC
File Type:
Document
Extracted files:
74
AV detection:
4 of 37 (10.81%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ebirhaadyasnmgjjf2q2clilqe4unpei3cc5rioesr4iaswlfwja._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/231215-w4cs6aabb2/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Uses Volume Shadow Copy WMI provider
Uses Volume Shadow Copy service COM API
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Abuses OpenXML format to download file from external location
Executes dropped EXE
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/2051138003c024d619292ea1a12d0b813946bc88d885d8a1c49478804acb2d92

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/467710/

Comments