MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 90903999baa70b0965698675e67612c0d16ef890394fa822cc11b8b7af8f7ee5. 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: 13


Maldoc score: 29


Intelligence 13 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 90903999baa70b0965698675e67612c0d16ef890394fa822cc11b8b7af8f7ee5
SHA3-384 hash: de909633b0a11a044127622cbad7fbd618081cdd89908e90a7b5a53d9c04ce4ad557ac420d009d6dd9a10170b489457b
SHA1 hash: a001f9da510503389f5c251ef9648c7917c40d82
MD5 hash: 06fa5d4e42e4cf24163b74f83760d64b
humanhash: salami-rugby-comet-jersey
File name:Outstanding.Dates .xls
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:545'280 bytes
First seen:2021-12-27 16:50:05 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 12288:qFTMdp2j9VuWpXjB7Xzt89C+snNJX7Q2Axoh+4VViNV6:qFT68umNz1nNZ7Q2LViNV6
TLSH T105C4011AB1C0C687E2160B704DD2CAE96777FC08AEB6C34B3195F32E5D73B90CA52615
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: 29
OLE dump

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

Section IDSection sizeSection name
1107 bytesCompObj
2244 bytesDocumentSummaryInformation
3208 bytesSummaryInformation
4493027 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
1121252 bytes_VBA_PROJECT_CUR/VBA/ThisWorkbook
129531 bytes_VBA_PROJECT_CUR/VBA/_VBA_PROJECT
133151 bytes_VBA_PROJECT_CUR/VBA/__SRP_0
14385 bytes_VBA_PROJECT_CUR/VBA/__SRP_1
151008 bytes_VBA_PROJECT_CUR/VBA/__SRP_2
161524 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
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) code and P-code are different, this may have been used to hide malicious code

Intelligence

File Origin
# of uploads :
1
# of downloads :
204
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Outstanding.Dates .xls
Verdict:
Malicious activity
Analysis date:
2021-12-27 16:51:26 UTC
Tags:
macros macros-on-open
Link:
https://app.any.run/tasks/4d261762-1a99-47b6-9d17-45fc89f99e8c

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:
False
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/216567/
Detection(s):
Xls.Macro.Obfuscation-9804250-0
Create hunting rule

MiscreantPunch.EvilMacro.DL.170224.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CROAndTheTangerineDream.M1.20200630.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.CROAndTheTangerineDream.M2.20200630.UNOFFICIAL
Create hunting rule

TwinWave.EvilDocs.FuncStacksJustWannaHaveFUN.20210129.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.StatusIsLikeAFriend.20210201.UNOFFICIAL
Create hunting rule

TwinWave.EvilDoc.DidntIBlowYourMindThisTime.20210922.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/90903999baa70b0965698675e67612c0d16ef890394fa822cc11b8b7af8f7ee5/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/61c9eec4ec6c6c14a9f71070/reports/10fe73a3-340d-4918-9d2c-cb924aa76cf7/overview
Result
Verdict:
MALICIOUS
Link:
https://labs.inquest.net/dfi/sha256/90903999baa70b0965698675e67612c0d16ef890394fa822cc11b8b7af8f7ee5
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/913186
Signature
.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 an embedded VBA with many randomly named variables
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 domain / URL
Multi AV Scanner detection for dropped file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Office process drops PE file
Sigma detected: MS Office Product Spawning Exe in User Dir
Writes to foreign memory regions
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 545664 Sample: Outstanding.Dates .xls Startdate: 27/12/2021 Architecture: WINDOWS Score: 100 61 Multi AV Scanner detection for domain / URL 2->61 63 Found malware configuration 2->63 65 Malicious sample detected (through community Yara rule) 2->65 67 19 other signatures 2->67 7 EXCEL.EXE 57 24 2->7         started        12 wsqmcons.exe 12 1 2->12         started        14 wsqmcons.exe 2->14         started        process3 dnsIp4 47 js-hurling.com 192.185.113.96, 443, 49165, 49166 UNIFIEDLAYER-AS-1US United States 7->47 49 www.js-hurling.com 7->49 35 C:\Users\user\AppData\Roaming\KXKQNWUGR.exe, PE32 7->35 dropped 37 C:\Users\user\...\asdyfuityhgnjm[1].exe, PE32 7->37 dropped 39 C:\Users\user\...\Outstanding.Dates .xls, Composite 7->39 dropped 77 Document exploit detected (creates forbidden files) 7->77 16 KXKQNWUGR.exe 13 3 7->16         started        51 www.js-hurling.com 12->51 41 C:\Users\user\AppData\Local\...\wsqmcons.exe, PE32 12->41 dropped 79 Writes to foreign memory regions 12->79 81 Allocates memory in foreign processes 12->81 83 Injects a PE file into a foreign processes 12->83 21 wsqmcons.exe 12->21         started        53 www.js-hurling.com 14->53 23 wsqmcons.exe 14->23         started        25 wsqmcons.exe 14->25         started        file5 signatures6 process7 dnsIp8 43 www.js-hurling.com 16->43 45 js-hurling.com 16->45 31 C:\Users\user\AppData\...\wsqmcons.exe, PE32 16->31 dropped 33 C:\Users\user\AppData\Local\...\KXKQNWUGR.exe, PE32 16->33 dropped 69 Machine Learning detection for dropped file 16->69 71 Writes to foreign memory regions 16->71 73 Allocates memory in foreign processes 16->73 75 Injects a PE file into a foreign processes 16->75 27 KXKQNWUGR.exe 16->27         started        file9 signatures10 process11 dnsIp12 55 artedriendfrim.hopto.org 2.56.57.210, 49168, 49172, 61857 GBTCLOUDUS Netherlands 27->55 57 famesurvelizerditis.sytes.net 27->57 59 2 other IPs or domains 27->59 85 Multi AV Scanner detection for dropped file 27->85 87 May check the online IP address of the machine 27->87 89 Machine Learning detection for dropped file 27->89 91 Hides that the sample has been downloaded from the Internet (zone.identifier) 27->91 signatures13
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/90903999baa70b0965698675e67612c0d16ef890394fa822cc11b8b7af8f7ee5/
Threat name:
Script-Macro.Downloader.Donoff
Create hunting rule
Status:
Malicious
First seen:
2021-12-27 16:50:17 UTC
File Type:
Document
Extracted files:
26
AV detection:
24 of 43 (55.81%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=scidtgn2u4fqszljqz26m5qsydiw56eqhfh2qiwmcg4lpl4pp3sq._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/211227-vcaztabddn/
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
Downloads MZ/PE file
Executes dropped EXE
Quasar Payload
Quasar RAT
Malware Config
C2 Extraction:
famesurvelizerditis.sytes.net:61857
tancesucesm.chickenkiller.com:61857
artedriendfrim.hopto.org:61974
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/90903999baa7/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/90903999baa70b0965698675e67612c0d16ef890394fa822cc11b8b7af8f7ee5

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/216567/

Comments