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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 84fe78eebf9d3e4a7d5ea36ac0dca3ea926026764390bcbff9b3de4dc81fa9f8. 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



QuasarRAT


Vendor detections: 14


Maldoc score: 23


Intelligence 14 IOCs YARA 1 File information Comments

SHA256 hash: 84fe78eebf9d3e4a7d5ea36ac0dca3ea926026764390bcbff9b3de4dc81fa9f8
SHA3-384 hash: b9eebf53b68e894d775fb8d1d46461e2b5075cf21e8bb53d28209b02d6b2fe68152437f5fef85a81a34e46ededd314f8
SHA1 hash: c18fc6844914bd921640c30bf56fc53d063f7269
MD5 hash: 6f33ff937e092a7ee9007c0e33bdccc1
humanhash: robert-salami-king-hotel
File name:Transfer_Details.xls
Download: download sample
Signature QuasarRAT
File size:231'424 bytes
First seen:2024-11-01 18:53:16 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:hxEtjPOtioVjDGUU1qfDlavx+W2QnAiSFrpS3y3jKdbQ3hn1n58P2fXLHbm4/ijA:kIVSib51a8Xrb5/4iPX
TLSH T1C134BF127584D4E6D8A522780CD283D927E3FC290E91CA67BE4677EF3FB1B508C9251B
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)
Magika xls
Reporter abuse_ch
Tags:QuasarRAT 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: 23
OLE dump

MalwareBazaar was able to identify 17 sections in this file using oledump:

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
4199346 bytesWorkbook
5630 bytes_VBA_PROJECT_CUR/PROJECT
6128 bytes_VBA_PROJECT_CUR/PROJECTwm
7825 bytes_VBA_PROJECT_CUR/VBA/Module1
8977 bytes_VBA_PROJECT_CUR/VBA/Sheet1
9977 bytes_VBA_PROJECT_CUR/VBA/Sheet2
10977 bytes_VBA_PROJECT_CUR/VBA/Sheet3
119483 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
124865 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
132022 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
14499 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
15716 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
161052 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
17614 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
IOCshell32.dllExecutable file name code and P-code are different, this may have been used to hide malicious code
SuspiciousEnvironMay read system environment variables
SuspiciousopenMay open a file
SuspiciousvbNormalFocusMay run an executable file or a system command
SuspiciousShellExecuteAMay run an executable file or a system command
Suspiciousshell32May run an executable file or a system command
SuspiciousLibMay run code from a DLL
SuspiciousURLDownloadToFileAMay download files from the Internet
SuspiciousChrMay attempt to obfuscate specific strings (use option --deobf to deobfuscate)
SuspiciousStrReverseMay 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)

Intelligence


File Origin
# of uploads :
1
# of downloads :
459
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Transfer_Details.xls
Verdict:
No threats detected
Analysis date:
2024-11-01 19:11:22 UTC
Tags:
macros macros-on-open

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
True
Verdict:
Malicious
Score:
99.1%
Tags:
phishing office macro micro
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Using the Windows Management Instrumentation requests
Creating a window
Сreating synchronization primitives
DNS request
Connection attempt by exploiting the app vulnerability
Sending a custom TCP request by exploiting the app vulnerability
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Behaviour
BlacklistAPI detected
Document image
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
language-nl macros macros-on-open
Label:
Malicious
Suspicious Score:
8.0/10
Score Malicious:
8%
Score Benign:
2%
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl.evad
Score:
80 / 100
Signature
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with hexadecimal encoded strings
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (UrlDownloadToFile)
Machine Learning detection for sample
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Behaviour
Behavior Graph:
Threat name:
Script-Macro.Trojan.QuasarRAT
Status:
Malicious
First seen:
2024-10-31 11:47:07 UTC
File Type:
Document
Extracted files:
26
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  8/10
Tags:
discovery macro macro_on_action
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Office loads VBA resources, possible macro or embedded object present
System Location Discovery: System Language Discovery
Malware Family:
n/a
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
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:informational_win_ole_protected
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.

File information


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

Comments