MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e. 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: 13


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

SHA256 hash: 6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e
SHA3-384 hash: 7c642498bfbb47b8e7c8bb3baea5dde5a4b5286a5e9e8869aa42812b06cdaa1b9518ca17521e5253a0136f3dbef3dc3e
SHA1 hash: 4249f81e15efde7046cdda21aca642ada5d08fc7
MD5 hash: fce0a2c1e3120330f10a9246281849f3
humanhash: high-freddie-london-november
File name:6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e.xlsm
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:44'058 bytes
First seen:2021-12-31 02:09:13 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 768:/vxZXv1ssnDIBIJYfTH+niSpZvDHx9wv+nWmFFiKk/fSqt+U0sRe+n4RUUay:/v3v1TDIG1BzTx9wv+dFFi3/KqY5s/4B
TLSH T18113D03CCE8A4AA4CADB8074493EB991CE55BB419E41DF4B0F2ED20E1484CD1536BDAF
Reporter Anonymous
Tags:QuasarRAT xlsm

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: 13
OLE dump

MalwareBazaar was able to identify 9 sections in this file using oledump:

Section IDSection sizeSection name
A1588 bytesPROJECT
A2119 bytesPROJECTwm
A3173 bytesVBA/Learn more
A4168 bytesVBA/Start
A51020 bytesVBA/ThisWorkbook
A6171 bytesVBA/Workbook
A77 bytesVBA/_VBA_PROJECT
A8270 bytesVBA/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_ActivateRuns when the Excel Workbook is opened
IOCXgeqtnose.batExecutable file name
SuspiciousOpenMay open a file
SuspiciousOutputMay write to a file (if combined with Open)
SuspiciousShellMay run an executable file or a system command
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 :
269
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e.xlsm
Verdict:
No threats detected
Analysis date:
2021-12-31 02:11:04 UTC
Tags:
macros macros-on-open
Link:
https://app.any.run/tasks/25a53b37-d9f9-49ba-8d7d-f0a6b3a0b2b4

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.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
True
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/216882/
Detection(s):
TwinWave.EvilDoc.DOCXRSTRGOOD.POWERSHELL.REV.200317.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CancionDelMariachi.20211020.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.START_PROC.211028B64.7.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.ENV_APPDATA.211028B64.8.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DOCXRSTRGOOD.ENV_APPDATA.211028B64.16.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a file
Creating a process with a hidden window
Running batch commands by exploiting the app vulnerability
Launching a file downloaded from the Internet
Result
Verdict:
Malicious
File Type:
Excel File with Macro
Link:
https://app.docguard.net/6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cmd macros macros-on-open packed powershell
Link:
https://www.filescan.io/uploads/61ce66804ab5c44cbf583db4/reports/d058ac59-baa3-48d0-b0ed-bef028ec743a/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e
Details
Base64 Encoded Powershell Directives
Detected one or more base64 encoded Powershell directives.
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...
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
External Relationship Element
Document contains an externally hosted relationship, which fetches further content.
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
bank.troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/914204
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Document contains an embedded VBA macro which may execute processes
Document contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Encrypted powershell cmdline option found
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Installs a global keyboard hook
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious encrypted Powershell command line found
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 document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Microsoft Office Product Spawning Windows Shell
Sigma detected: Powershell Used To Disable Windows Defender AV Security Monitoring
Sigma detected: Suspicious Encoded PowerShell Command Line
Uses dynamic DNS services
Writes to foreign memory regions
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 546682 Sample: 3xtEGivgCl.xlsm Startdate: 31/12/2021 Architecture: WINDOWS Score: 100 59 jerenyankipong.duckdns.org 2->59 75 Multi AV Scanner detection for domain / URL 2->75 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 15 other signatures 2->81 11 EXCEL.EXE 77 25 2->11         started        15 SmartUninstaller.exe 2->15         started        17 SmartUninstaller.exe 2->17         started        signatures3 process4 file5 47 C:\Users\user\Documents\Xgeqtnose.bat, ASCII 11->47 dropped 49 C:\Users\user\Desktop\~$3xtEGivgCl.xlsm, data 11->49 dropped 51 C:\Users\user\...\3xtEGivgCl.xlsm. (copy), Microsoft 11->51 dropped 89 Document exploit detected (creates forbidden files) 11->89 19 cmd.exe 11->19         started        signatures6 process7 signatures8 83 Malicious encrypted Powershell command line found 19->83 85 Encrypted powershell cmdline option found 19->85 22 powershell.exe 12 7 19->22         started        process9 dnsIp10 61 hata.co.za 154.0.162.214, 49165, 80 AfrihostZA South Africa 22->61 45 C:\Users\user\...\Ttbxuezzganxzwxuucnc.exe, PE32 22->45 dropped 87 Powershell drops PE file 22->87 27 Ttbxuezzganxzwxuucnc.exe 1 5 22->27         started        file11 signatures12 process13 file14 53 C:\Users\user\...\SmartUninstaller.exe, PE32 27->53 dropped 55 C:\Users\user\...\Ttbxuezzganxzwxuucnc.exe, PE32 27->55 dropped 57 C:\Users\user\AppData\...\AdvancedRun.exe, PE32 27->57 dropped 91 Machine Learning detection for dropped file 27->91 93 Writes to foreign memory regions 27->93 95 Allocates memory in foreign processes 27->95 97 Injects a PE file into a foreign processes 27->97 31 Ttbxuezzganxzwxuucnc.exe 12 2 27->31         started        35 AdvancedRun.exe 1 27->35         started        37 AdvancedRun.exe 1 27->37         started        39 powershell.exe 6 27->39         started        signatures15 process16 dnsIp17 63 jerenyankipong.duckdns.org 185.19.85.141, 4782, 49167, 49168 DATAWIRE-ASCH Switzerland 31->63 65 ip-api.com 208.95.112.1, 49166, 80 TUT-ASUS United States 31->65 67 May check the online IP address of the machine 31->67 69 Machine Learning detection for dropped file 31->69 71 Hides that the sample has been downloaded from the Internet (zone.identifier) 31->71 73 Installs a global keyboard hook 31->73 41 AdvancedRun.exe 35->41         started        43 AdvancedRun.exe 37->43         started        signatures18 process19
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e/
Threat name:
Document-Office.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2021-12-31 02:10:14 UTC
File Type:
Document
Extracted files:
50
AV detection:
11 of 27 (40.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=n73ilznm7wkgcanvld47tvd2bvivyyxhi5xv7a3jiye5mq2dgfpa._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:u.n.i.a macro persistence spyware trojan
Link:
https://tria.ge/reports/211231-clqshsgdh5/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Modifies registry class
NTFS ADS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Deletes itself
Loads dropped DLL
Blocklisted process makes network request
Downloads MZ/PE file
Executes dropped EXE
Nirsoft
Process spawned unexpected child process
Quasar Payload
Quasar RAT
Malware Config
C2 Extraction:
jerenyankipong.duckdns.org:4782
Dropper Extraction:
http://hata.co.za/iuy/dddd.pif
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/6ff685e5acfd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/6ff685e5acfd946101b558f9f9d47a0d515c62e7476f5f83694609d64343315e

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/216882/

Comments