MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4643ab52e51d05bce715ec6d0baae09ef15763318928c1ed8d3c24b72df3602. 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



Threat unknown


Vendor detections: 7


Maldoc score: 15


Intelligence 7 IOCs YARA File information Comments 1

SHA256 hash: f4643ab52e51d05bce715ec6d0baae09ef15763318928c1ed8d3c24b72df3602
SHA3-384 hash: c94a94d197e77bda63f19d25673fadb337463376a0980af6e31a6e80a5c0e04a07dd7b395fd80d1994ce2f495bb0950e
SHA1 hash: 2a1bd1b6e7048c8e051fcc95707a6f2e6bc61b88
MD5 hash: c77cd6616dedbf3669345842f7231830
humanhash: venus-vegan-oregon-bulldog
File name:c77cd6616dedbf3669345842f7231830
Download: download sample
File size:676'864 bytes
First seen:2021-07-21 20:45:24 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 12288:mGDH3roxGMC/mc4bl3q5uaFsvCgdz2l5MjavMmIf+Y6b:mGDXEUH/4EnsvJZ2lKjavMm/Y6
TLSH T165E449C1EBE1C92FFBD1957A0C524630127CCC4456804B977256F33AB72BA7C8E9A2D9
Reporter zbetcheckin
Tags:excel xlsx

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: 15
Application name is Microsoft Excel
Office document is in OLE format
Office document contains VBA Macros
OLE dump

MalwareBazaar was able to identify 10 sections in this file using oledump:

Section IDSection sizeSection name
1114 bytesCompObj
2520 bytesDocumentSummaryInformation
3272 bytesSummaryInformation
4660059 bytesWorkbook
5422 bytes_VBA_PROJECT_CUR/PROJECT
662 bytes_VBA_PROJECT_CUR/PROJECTwm
7977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
81874 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
92613 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
10515 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
AutoExecWorkBook_OpenRuns when the Excel Workbook is opened
SuspiciousEnvironMay read system environment variables
SuspiciousWriteMay write to a file (if combined with Open)
SuspiciousCreateTextFileMay create a text file
SuspiciousCreateObjectMay create an OLE object
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousExecMay run an executable file or a system
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 :
115
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
c77cd6616dedbf3669345842f7231830
Verdict:
Malicious activity
Analysis date:
2021-07-21 20:46:33 UTC
Tags:
macros macros-on-open

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Document image
Document image
Result
Verdict:
MALICIOUS
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Macro with File System Write
Detected macro logic that can write data to the file system.
Macro Contains Suspicious String
Detected a macro with a suspicious string. Suspicious strings include privileged function calls, obfuscations, odd registry keys, etc...
Result
Threat name:
Unknown
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Document contains an embedded macro with GUI obfuscation
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Microsoft Office creates scripting files
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Sigma detected: Microsoft Office Product Spawning Windows Shell
Uses known network protocols on non-standard ports
Behaviour
Behavior Graph:
Threat name:
Script-Macro.Infostealer.Dridex
Status:
Malicious
First seen:
2021-07-21 19:37:56 UTC
AV detection:
8 of 27 (29.63%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
n/a
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Blocklisted process makes network request
Process spawned unexpected child process
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Web download

Excel file xlsx f4643ab52e51d05bce715ec6d0baae09ef15763318928c1ed8d3c24b72df3602

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2021-07-21 20:45:25 UTC

url : hxxp://payreminament.com:8088/wp-theme/Invoice_55485812.xls