MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134. 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: 12


Maldoc score: 23


Intelligence 12 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134
SHA3-384 hash: cef96862a510a25456a7e044a535bc1900e66c3390cf48279e90b0d4a0e0395ed48af68df74fa6eb394c41c0b72479b3
SHA1 hash: aa7ede644f6580b44af5437275a11ad022651cc5
MD5 hash: 1f2d6c9751010248d60b97e48b805f33
humanhash: virginia-east-table-july
File name:Ashley- X-Large fotos.xls
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:146'432 bytes
First seen:2022-07-22 20:14:31 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 3072:5rxEtjPOtioVjDGUU1qfDlaGGx+cL2QnAMwNvOYysDILuC6pEAGaHFEnaRUynBuv:VxEtjPOtioVjDGUU1qfDlavx+W2QnAH8
TLSH T124E3BE953681C4A6D54847764ED7D2DA2B3BFC129E778B073254F32F2EB72A09C03A16
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)
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
4120249 bytesWorkbook
5633 bytes_VBA_PROJECT_CUR/PROJECT
6128 bytes_VBA_PROJECT_CUR/PROJECTwm
7833 bytes_VBA_PROJECT_CUR/VBA/Module1
8985 bytes_VBA_PROJECT_CUR/VBA/Sheet1
9985 bytes_VBA_PROJECT_CUR/VBA/Sheet2
10985 bytes_VBA_PROJECT_CUR/VBA/Sheet3
116647 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
124800 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
131454 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
14267 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
15408 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
16220 bytes_VBA_PROJECT_CUR/VBA/__SRP_3
17612 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
SuspiciousOpenMay open a file
SuspiciousWriteMay write to a file (if combined with Open)
Suspiciousadodb.streamMay create a text file
SuspiciousSaveToFileMay 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
SuspiciousShell.ApplicationMay run an application (if combined with CreateObject)
Suspiciousmicrosoft.xmlhttpMay download files from the Internet
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)

Intelligence

File Origin
# of uploads :
1
# of downloads :
332
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/293482/
Detection(s):
TwinWave.EvilDoc.StatusIsLikeAFriend.20210201.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Office.Macro-13.UNOFFICIAL
Create hunting rule

SecuriteInfo.com.Office.Macro-11.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.XlsM.objshell.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.ShoulderOfOrion.20220121.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Creating a file in the %AppData% subdirectories
Sending an HTTP GET request
Unauthorized injection to a recently created process
Sending a custom TCP request by exploiting the app vulnerability
Creating a process from a recently created file
Result
Verdict:
Malicious
File Type:
Legacy Excel File with Macro
Link:
https://app.docguard.net/126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
macros macros-on-open packed
Link:
https://www.filescan.io/uploads/62db05d5b1b58ed7a17a99b2/reports/b218eda4-95e6-4202-b3b6-6a9956d72447/overview
Label:
Malicious
Suspicious Score:
8.7/10
Score Malicious:
88%
Score Benign:
12%
Link:
https://www.malware.ai/gui/files/?id=5e99150f-05d7-4a5c-b634-85a900e34fb3
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134
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.
Shell.Application Object
Detected the instantiation of Shell Application object within the macro.
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:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1039458
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with functions possibly related to HTTP operations
Document contains an embedded VBA with hexadecimal encoded strings
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office process drops PE file
PE file contains section with special chars
PE file has nameless sections
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 671959 Sample: Ashley- X-Large fotos.xls Startdate: 22/07/2022 Architecture: WINDOWS Score: 100 55 Snort IDS alert for network traffic 2->55 57 Multi AV Scanner detection for domain / URL 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 17 other signatures 2->61 9 EXCEL.EXE 8 19 2->9         started        14 taskeng.exe 1 2->14         started        process3 dnsIp4 43 tractorandinas.com 192.185.115.3, 443, 49173 UNIFIEDLAYER-AS-1US United States 9->43 45 www.tractorandinas.com 9->45 37 C:\Users\user\AppData\...\CTXBJWWE.exe, PE32 9->37 dropped 39 C:\Users\user\...\knkxjbknjxbnvhncn[1].exe, PE32 9->39 dropped 65 Document exploit detected (creates forbidden files) 9->65 16 CTXBJWWE.exe 9->16         started        19 CTXBJWWE.exe 14->19         started        file5 signatures6 process7 signatures8 47 Detected unpacking (changes PE section rights) 16->47 49 May check the online IP address of the machine 16->49 51 Machine Learning detection for dropped file 16->51 53 2 other signatures 16->53 21 CTXBJWWE.exe 12 2 16->21         started        26 CTXBJWWE.exe 19->26         started        process9 dnsIp10 41 ip-api.com 208.95.112.1, 49174, 80 TUT-ASUS United States 21->41 35 C:\Users\user\AppData\Roaming\silk\core.exe, PE32 21->35 dropped 63 Hides that the sample has been downloaded from the Internet (zone.identifier) 21->63 28 core.exe 21->28         started        31 schtasks.exe 21->31         started        file11 signatures12 process13 signatures14 67 Detected unpacking (changes PE section rights) 28->67 69 Machine Learning detection for dropped file 28->69 33 core.exe 28->33         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134/
Threat name:
Document-Word.Trojan.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2022-07-21 21:54:32 UTC
File Type:
Document
Extracted files:
26
AV detection:
25 of 40 (62.50%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=cjvgsr53ozwqnz7r5mlww35foptsy4w5b5yfvgo7dyzvw6bzwe2a._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:nop macro macro_on_action spyware suricata trojan
Link:
https://tria.ge/reports/220722-y1kqpshgaq/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Program crash
Suspicious use of SetThreadContext
Looks up external IP address via web service
Executes dropped EXE
Quasar RAT
Quasar payload
suricata: ET MALWARE Common RAT Connectivity Check Observed
Malware Config
C2 Extraction:
dnuocc.com:64594
www.dnuocc.com:64594
Malware family:
xRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/126a6947bb76/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134

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
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:informational_win_ole_protected
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Identify OLE Project protection within documents.
Rule name:malware_shellcode_hash
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect shellcode api hash value
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB

File information

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

Malspam

QuasarRAT

Excel file xls 126a6947bb766d06e7f1eb176b6fa573e72c72dd0f705a99df1e335b7839b134

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/293482/

Comments