MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 402764c90c870fa2eb17282ffeffe95e8439d3622976d7391ee9cd1d43d491cd. 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: 31


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

SHA256 hash: 402764c90c870fa2eb17282ffeffe95e8439d3622976d7391ee9cd1d43d491cd
SHA3-384 hash: 9ac543136b64f6beefaecc02749570265783aa3afe93521e282d2ef6463cb4c1d117abac25496e53784d0ff7af97844a
SHA1 hash: 33b568e5f9374a76ed2fa183afc7e74281c8ae11
MD5 hash: 4b1dfcc803638984599294c70b9f707e
humanhash: vermont-fourteen-rugby-vermont
File name:Pago.xls
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:276'992 bytes
First seen:2021-12-22 18:51:27 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:hxEtjPOtioVjDGUU1qfDlavx+W2QnAXHBKL5JDEzdvR5EOY+zk6u1h5vKsAaJbBO:LKL5KzJR5EbAk6u1h9brF
TLSH T16F44E095B281FD15CA0123314CDFD6EB2B36FD058E6793077256F72F6E7B680868221A
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: 31
OLE dump

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

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
4230996 bytesWorkbook
5631 bytes_VBA_PROJECT_CUR/PROJECT
6128 bytes_VBA_PROJECT_CUR/PROJECTwm
7816 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
1118034 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
128054 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
133234 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
14306 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
151008 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
161524 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
SuspiciousEnvironMay read system environment variables
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
SuspiciousvbNormalFocusMay 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)
SuspiciousXorMay 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 :
231
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Pago.xls
Verdict:
Malicious activity
Analysis date:
2021-12-22 18:55:51 UTC
Tags:
macros macros-on-open evasion trojan
Link:
https://app.any.run/tasks/acd8a361-bde5-4c17-b2a8-a3906670cc2a

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
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/215842/
Detection(s):
TwinWave.EvilDocs.FuncStacksJustWannaHaveFUN.20210129.UNOFFICIAL
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
DNS request
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
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/402764c90c870fa2eb17282ffeffe95e8439d3622976d7391ee9cd1d43d491cd/results/dashboard
Document image
Image:
Download PNG
Document image
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
evasive macros macros-on-open vbastomped
Link:
https://www.filescan.io/uploads/61c373d6ec6c6c14a9eaa0fa/reports/a7819770-ce1c-42f5-a471-2303bbc588ff/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/402764c90c870fa2eb17282ffeffe95e8439d3622976d7391ee9cd1d43d491cd
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...
Document With Minimal Content
Document contains less than 1 kilobyte of semantic information.
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/911704
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Connects to many ports of the same IP (likely port scanning)
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 contains VBA stomped code (only p-code) potentially bypassing AV detection
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Found malware configuration
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 submitted file
Office process drops PE file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Sigma detected: MS Office Product Spawning Exe in User Dir
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Writes to foreign memory regions
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 544196 Sample: Pago.xls Startdate: 22/12/2021 Architecture: WINDOWS Score: 100 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 Antivirus / Scanner detection for submitted sample 2->57 59 18 other signatures 2->59 7 EXCEL.EXE 57 24 2->7         started        12 wsqmcons.exe 12 1 2->12         started        14 wsqmcons.exe 2->14         started        process3 dnsIp4 43 js-hurling.com 192.185.113.96, 443, 49165 UNIFIEDLAYER-AS-1US United States 7->43 45 www.js-hurling.com 7->45 33 C:\Users\user\AppData\Roaming\JWPXYB.exe, PE32 7->33 dropped 35 C:\Users\user\AppData\...\yfuityhgnjm[1].exe, PE32 7->35 dropped 37 C:\Users\user\Desktop\Pago.xls, Composite 7->37 dropped 69 Document exploit detected (creates forbidden files) 7->69 16 JWPXYB.exe 13 3 7->16         started        39 C:\Users\user\AppData\Local\...\wsqmcons.exe, PE32 12->39 dropped 71 Machine Learning detection for dropped file 12->71 73 Writes to foreign memory regions 12->73 75 Allocates memory in foreign processes 12->75 77 Injects a PE file into a foreign processes 12->77 21 wsqmcons.exe 12->21         started        23 wsqmcons.exe 12->23         started        file5 signatures6 process7 dnsIp8 41 136.144.41.66, 49166, 49171, 49172 WORLDSTREAMNL Netherlands 16->41 29 C:\Users\user\AppData\...\wsqmcons.exe, PE32 16->29 dropped 31 C:\Users\user\AppData\Local\Temp\JWPXYB.exe, PE32 16->31 dropped 61 Machine Learning detection for dropped file 16->61 63 Writes to foreign memory regions 16->63 65 Allocates memory in foreign processes 16->65 67 Injects a PE file into a foreign processes 16->67 25 JWPXYB.exe 16->25         started        file9 signatures10 process11 dnsIp12 47 artedriendfrim.hopto.org 2.56.57.210, 49168, 49170, 61857 GBTCLOUDUS Netherlands 25->47 49 famesurvelizerditis.sytes.net 25->49 51 2 other IPs or domains 25->51 79 May check the online IP address of the machine 25->79 81 Machine Learning detection for dropped file 25->81 83 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 25->83 85 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->85 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/402764c90c870fa2eb17282ffeffe95e8439d3622976d7391ee9cd1d43d491cd/
Threat name:
Script-Macro.Trojan.Valyria
Create hunting rule
Status:
Malicious
First seen:
2021-12-22 18:52:09 UTC
File Type:
Document
Extracted files:
26
AV detection:
20 of 43 (46.51%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=iatwjsimq4h2f2yxfax7577jl2cdtu3cff3nooi65hgr2q6ushgq._file
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:woon2 macro macro_on_action persistence spyware trojan
Link:
https://tria.ge/reports/211222-xh3ccsfhd6/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Modifies Internet Explorer settings
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetThreadContext
Adds Run key to start application
Looks up external IP address via web service
Executes dropped EXE
Quasar Payload
Quasar RAT
Malware Config
C2 Extraction:
famesurvelizerditis.sytes.net:61857
tancesucesm.chickenkiller.com:61857
artedriendfrim.hopto.org:61974
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/402764c90c870fa2eb17282ffeffe95e8439d3622976d7391ee9cd1d43d491cd

File information

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

Malspam

QuasarRAT

Excel file xls 402764c90c870fa2eb17282ffeffe95e8439d3622976d7391ee9cd1d43d491cd

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/215842/

Comments