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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 522f0758b2eac46d2282fbd3ce0befb1041e6cff81a43f07e343166db4ab0934. 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



TrickBot


Vendor detections: 9


Maldoc score: 17


Intelligence 9 IOCs YARA 1 File information Comments

SHA256 hash: 522f0758b2eac46d2282fbd3ce0befb1041e6cff81a43f07e343166db4ab0934
SHA3-384 hash: 02381444245a667ab53059faf05dbe82c8c4f14cbff262c5eaf3b11cae4f3b0d84c61319395fa0166f357266b1a82aa9
SHA1 hash: 51f8337cf0f4352d3b78bbfbd262ddf5107afc4a
MD5 hash: 1b4787fe6982c2147f03b03a48a8da72
humanhash: stairway-beer-mountain-wolfram
File name:db2d.doc
Download: download sample
Signature TrickBot
File size:551'424 bytes
First seen:2021-12-07 11:47:57 UTC
Last seen:Never
File type:Word file doc
MIME type:application/msword
ssdeep 3072:KtwrI4IezG/34j6zuMWdQYmmp8B7tQnrjgtHGZ+Y+:KtwcEG/qgudmw8B7rGX+
TLSH T174C4E2F5A073D554FC1F26B2A9C128884AC33DEB3A0EDF4A0118B57F29755D83A9885F
Reporter abuse_ch
Tags:doc TrickBot

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: 17
OLE dump

MalwareBazaar was able to identify 12 sections in this file using oledump:

Section IDSection sizeSection name
1113 bytesCompObj
24096 bytesDocumentSummaryInformation
34096 bytesSummaryInformation
44441 bytes1Table
54096 bytesData
6411 bytesMacros/PROJECT
771 bytesMacros/PROJECTwm
81052 bytesMacros/VBA/ThisDocument
93872 bytesMacros/VBA/_VBA_PROJECT
1028064 bytesMacros/VBA/autOclose
11579 bytesMacros/VBA/dir
12491798 bytesWordDocument
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
AutoExecautOcloseRuns when the Word document is closed
SuspiciousOpenMay open a file
SuspiciouswriteMay write to a file (if combined with Open)
SuspiciousRunMay run an executable file or a system command
SuspiciousCreateObjectMay create an OLE object
SuspiciousGetObjectMay get an OLE object with a running instance
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousHex StringsHex-encoded strings were detected, may be used to obfuscate strings (option --decode to see all)
SuspiciousBase64 StringsBase64-encoded strings were detected, may be used to obfuscate strings (option --decode to see all) code and P-code are different, this may have been used to hide malicious code

Intelligence


File Origin
# of uploads :
1
# of downloads :
790
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
db2d.doc
Verdict:
No threats detected
Analysis date:
2021-12-07 11:58:12 UTC
Tags:
macros

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/msword
Has a screenshot:
False
Contains macros:
True
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a file
Launching a process
Searching for synchronization primitives
Creating a file in the %temp% subdirectories
Launching cmd.exe command interpreter
Creating a process with a hidden window
Launching a process by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Word File with Macro
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
evasive macros macros-on-close monero vbastomped
Result
Threat name:
Unknown
Detection:
malicious
Classification:
expl.evad
Score:
100 / 100
Signature
Bypasses PowerShell execution policy
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (drops PE 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)
Office process drops PE file
Powershell drops PE file
Sigma detected: Change PowerShell Policies to a Unsecure Level
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Suspicious Script Execution From Temp Folder
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 535471 Sample: db2d.doc Startdate: 07/12/2021 Architecture: WINDOWS Score: 100 39 Multi AV Scanner detection for submitted file 2->39 41 Document exploit detected (drops PE files) 2->41 43 Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros) 2->43 45 7 other signatures 2->45 9 OUTLOOK.EXE 508 22 2->9         started        11 WINWORD.EXE 291 25 2->11         started        process3 file4 14 rundll32.exe 9->14         started        31 C:\Users\Public\Documents\1.xml, PE32 11->31 dropped 33 C:\Users\user\Desktop\~$db2d.doc, data 11->33 dropped 35 C:\Users\user\...\~DF425E1139E65BEF07.TMP, Composite 11->35 dropped process5 process6 16 rundll32.exe 1 14->16         started        file7 27 C:\Users\user\AppData\Local\Temp\1.ps1, ASCII 16->27 dropped 19 cmd.exe 16->19         started        process8 signatures9 47 Bypasses PowerShell execution policy 19->47 22 powershell.exe 12 7 19->22         started        process10 dnsIp11 37 91.92.109.142, 49168, 80 NETERRA-ASBG Bulgaria 22->37 29 C:\Users\user\AppData\Local\Temp\1.dll, PE32 22->29 dropped 49 Powershell drops PE file 22->49 file12 signatures13
Threat name:
Document-Office.Trojan.Woreflint
Status:
Malicious
First seen:
2021-12-07 11:48:12 UTC
File Type:
Document
Extracted files:
14
AV detection:
8 of 45 (17.78%)
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
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Windows directory
Drops file in System32 directory
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Malware Config
Dropper Extraction:
http://91.92.109.142/wolf.png
http://192.99.255.33/images/wolf.png
http://185.183.98.15/wolf.png
http://83.138.53.103/images/wolf.png
http://172.96.189.216/images/wolf.png
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:BitcoinAddress
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address

File information


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

Comments