MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8683b69471ec7531228b1c48d2b362a5c6c9f0fb5e8fb0e3480797caa9a41d58. 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



Dridex


Vendor detections: 8


Maldoc score: 15


Intelligence 8 IOCs YARA File information Comments 1

SHA256 hash: 8683b69471ec7531228b1c48d2b362a5c6c9f0fb5e8fb0e3480797caa9a41d58
SHA3-384 hash: 66883519fee96ef90e032c58fdc204ecfac1f59b902a4e5bab9bf26ae688849f41804bc3e32a06314e9d2eb1830f77fd
SHA1 hash: fdae3503f37866112dbe969d5bf204924ba0f3e1
MD5 hash: 5d7e91a055573a70c596b58c5c7506d9
humanhash: zebra-hawaii-massachusetts-harry
File name:5d7e91a055573a70c596b58c5c7506d9
Download: download sample
Signature Dridex
File size:326'144 bytes
First seen:2021-07-21 16:25:25 UTC
Last seen:2021-07-21 16:53:16 UTC
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 6144:h0Y35qAOJl/YrLYz+WrNhZF+E+W2RGtePjKBbA2G0VeU+fMGMzizLVJwOzf1UI1:vjwbA2EfKmdSOT
TLSH T105644DD0EBE1C92FEBD0A53A0C565634527CCC4499900B977359F33AB72BA3C8E852D9
Reporter zbetcheckin
Tags:Dridex 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
2308 bytesDocumentSummaryInformation
3272 bytesSummaryInformation
4312660 bytesWorkbook
5410 bytes_VBA_PROJECT_CUR/PROJECT
662 bytes_VBA_PROJECT_CUR/PROJECTwm
7977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
81878 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
92614 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 :
2
# of downloads :
139
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5d7e91a055573a70c596b58c5c7506d9
Verdict:
Malicious activity
Analysis date:
2021-07-21 16:31:50 UTC
Tags:
macros macros-on-open loader

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:
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
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)
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found PHP interpreter
Machine Learning detection for dropped file
Microsoft Office creates scripting files
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
Tries to delay execution (extensive OutputDebugStringW loop)
Uses known network protocols on non-standard ports
Yara detected Dridex unpacked file
Behaviour
Behavior Graph:
Threat name:
Script-Macro.Infostealer.Dridex
Status:
Malicious
First seen:
2021-07-21 16:26:04 UTC
AV detection:
9 of 26 (34.62%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:dridex botnet:22201 botnet evasion loader macro trojan
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
Checks whether UAC is enabled
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Dridex Loader
Dridex
Process spawned unexpected child process
Malware Config
C2 Extraction:
178.238.236.59:443
104.245.52.73:5007
81.0.236.93:13786
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

Dridex

Excel file xlsx 8683b69471ec7531228b1c48d2b362a5c6c9f0fb5e8fb0e3480797caa9a41d58

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2021-07-21 16:25:26 UTC

url : hxxp://taskremindment.com:8088/style/Invoice_78814340.xls