MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 13a8c58e52aba7cfb98f7efc413e91cb707fae63404821a678a15d671d00b944. 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: 7


Maldoc score: 19


Intelligence 7 IOCs YARA File information Comments 1

SHA256 hash: 13a8c58e52aba7cfb98f7efc413e91cb707fae63404821a678a15d671d00b944
SHA3-384 hash: 930c3bcebc5f11149dfc80a5692bb94414bf7f6dadf70eaa22a4fea4f64599d66a2d910060174bf7b7fe9e68c55fa01a
SHA1 hash: 22a605bcef9fccf255ed0175beecaa3cf70426f3
MD5 hash: f92a895f8781cd98115c3cb123301e1c
humanhash: idaho-monkey-fourteen-alaska
File name:f92a895f8781cd98115c3cb123301e1c
Download: download sample
Signature Dridex
File size:730'624 bytes
First seen:2021-07-14 21:45:21 UTC
Last seen:Never
File type:Excel file xlsx
MIME type:application/vnd.ms-excel
ssdeep 12288:XRYbXrlUc6XS/CwRl+4MW1H5onZHBDznxcp/c0UGtkbByxlFYd2DrpGsPk:4Uc6EjDMW1UrDjxcNcfgZI2LP
TLSH T185F448E5ABA4CEB5DB01C1718C9D19586374CC118A49AFC77265B03CFF3BB798E88186
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: 19
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
2256 bytesDocumentSummaryInformation
3272 bytesSummaryInformation
4713715 bytesWorkbook
5414 bytes_VBA_PROJECT_CUR/PROJECT
662 bytes_VBA_PROJECT_CUR/PROJECTwm
7977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
82104 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
92638 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
SuspiciousShellMay run an executable file or a system command
SuspiciousWscript.ShellMay run an executable file or a system command
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 :
144
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
f92a895f8781cd98115c3cb123301e1c
Verdict:
No threats detected
Analysis date:
2021-07-14 21:45:56 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
Payload URLs
URL
File name
edibleupcountry.com
WorkBook
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...
InQuest Machine Learning
An InQuest machine-learning model classified this macro as potentially malicious.
Result
Threat name:
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
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)
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Microsoft Office creates scripting files
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
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)
Tries to detect sandboxes / dynamic malware analysis system (file name check)
Tries to detect virtualization through RDTSC time measurements
Uses known network protocols on non-standard ports
Yara detected Dridex unpacked file
Behaviour
Behavior Graph:
Threat name:
Script.Trojan.Valyria
Status:
Malicious
First seen:
2021-07-14 17:16:12 UTC
File Type:
Document
Extracted files:
16
AV detection:
12 of 45 (26.67%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:dridex botnet:22202 botnet evasion loader 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
Executes dropped EXE
Dridex Loader
Dridex
Process spawned unexpected child process
Malware Config
C2 Extraction:
202.29.60.34:443
66.175.217.172:13786
78.46.78.42:9043
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 13a8c58e52aba7cfb98f7efc413e91cb707fae63404821a678a15d671d00b944

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2021-07-14 21:45:23 UTC

url : hxxp://jeromfastsolutions.com:8088/vendors/Invoice%2050261765%20from%20Quickbooks,%20LLC.xls