MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7a5ce7c3c6fe4c23529f1254a71b8772327e3b68f1adceff98d7c2fb9af0315. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a7a5ce7c3c6fe4c23529f1254a71b8772327e3b68f1adceff98d7c2fb9af0315
SHA3-384 hash: 6f1e0e0eef7b437e524304925a31eb365836d95caae478423f8cced8eab8e9f339fe421a34a801efa4f229d39d042a16
SHA1 hash: c58d0af1f005f25b9d7e2774cdb10cc48c15a201
MD5 hash: 278c9b22482531cac9433e57d900bbf7
humanhash: sierra-eighteen-winter-coffee
File name:file
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:7'506'487 bytes
First seen:2023-03-27 13:10:11 UTC
Last seen:2023-03-27 14:45:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 0b5552dccd9d0a834cea55c0c8fc05be (16 x LunaLogger, 16 x BlankGrabber, 8 x CrealStealer)
ssdeep 196608:BigkL2Vmd6+DXLZy7YM30LzajzpqmkCfOSCybj:AgkL2Vmd6m70GzajzZkCG7yf
Threatray 115 similar samples on MalwareBazaar
TLSH T13F76330D516006F9E83BC03DDDA3942AEAB279964B64E3474774C2120F13AF56E7BFA1
TrID 64.5% (.EXE) InstallShield setup (43053/19/16)
15.7% (.EXE) Win64 Executable (generic) (10523/12/4)
7.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
3.0% (.ICL) Windows Icons Library (generic) (2059/9)
3.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon 442bd44c69b26408 (1 x NanoCore, 1 x QuasarRAT)
Reporter andretavare5
Tags:exe QuasarRAT


Avatar
andretavare5
Sample downloaded from https://vk.com/doc791620691_661188239?hash=8UorTZOVRipezdno1lC2wWRDLVWiwecyS7QrktdgAoz&dl=G44TCNRSGA3DSMI:1679905185:EdPrE4m42z4TClCNASpGSzPu5KPrVYuM9EHvovhBNIz&api=1&no_preview=1#low1

Intelligence

File Origin
# of uploads :
2
# of downloads :
294
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2023-03-27 13:11:57 UTC
Tags:
installer
Link:
https://app.any.run/tasks/ccc1b28b-ff7a-4556-9c5c-1de9745d6787

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarStealer
Create hunting rule
Link:
https://www.capesandbox.com/analysis/377901/
Detection(s):
SecuriteInfo.com.HEUR.Trojan-PSW.Python.Agent.gen.8588.26986.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file in the %temp% subdirectories
Running batch commands
Creating a process with a hidden window
Launching a process
Using the Windows Management Instrumentation requests
Creating a process from a recently created file
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Creating a file
Sending an HTTP GET request
Unauthorized injection to a recently created process
Launching a file downloaded from the Internet
Enabling autorun by creating a file
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/75216/overview
Behaviour
MalwareBazaar
MeasuringTime
CheckCmdLine
EvasionQueryPerformanceCounter
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
greyware overlay packed
Link:
https://www.filescan.io/uploads/642195e7009023b71dc30f62/reports/a74ea5a6-5680-4430-ad0e-cb3e28fd493d/overview
Verdict:
Malicious
Labled as:
MSIL.PasswordStealerA.Generic
Link:
https://www.hybrid-analysis.com/sample/a7a5ce7c3c6fe4c23529f1254a71b8772327e3b68f1adceff98d7c2fb9af0315
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/bfbbb241-e546-40da-beba-bc846b88a6a1
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1202700
Signature
Antivirus detection for dropped file
Contains functionality to infect the boot sector
Hides threads from debuggers
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 835603 Sample: file.exe Startdate: 27/03/2023 Architecture: WINDOWS Score: 96 27 Malicious sample detected (through community Yara rule) 2->27 29 Antivirus detection for dropped file 2->29 31 Multi AV Scanner detection for dropped file 2->31 33 4 other signatures 2->33 8 file.exe 18 2->8         started        process3 file4 19 C:\Users\user\AppData\Local\...\yurrr.exe, PE32 8->19 dropped 21 C:\Users\user\AppData\...\unicodedata.pyd, PE32+ 8->21 dropped 23 C:\Users\user\AppData\Local\...\select.pyd, PE32+ 8->23 dropped 25 13 other files (11 malicious) 8->25 dropped 35 Contains functionality to infect the boot sector 8->35 12 file.exe 8->12         started        signatures5 process6 signatures7 37 Hides threads from debuggers 12->37 15 cmd.exe 1 12->15         started        process8 process9 17 conhost.exe 15->17         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a7a5ce7c3c6fe4c23529f1254a71b8772327e3b68f1adceff98d7c2fb9af0315/
Threat name:
ByteCode-MSIL.Trojan.Privateloader
Create hunting rule
Status:
Malicious
First seen:
2023-03-27 13:11:14 UTC
File Type:
PE+ (Exe)
Extracted files:
289
AV detection:
23 of 37 (62.16%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u6s447b4n7smenjj6esuu4nyo4rspy5wr4nnz37zrv6c7onpamkq._file
Verdict:
malicious
Similar samples:
06f7a5380d0d2f23e9c481071e7766486806d38c6cd5785b5897863b481d56d1
QuasarRAT
2318ae5d7c23bf186b88abecf892e23ce199381b22c8eb216ad1616ee8877933
QuasarRAT
3a62c18261a8f899c82eaed7aeb78c2d284788e55dd6c37cad57701a44df9a86
QuasarRAT
c6af2ec456ad02b9eb3faf9fd9384d3dc43a55e7b1a58eec4440ee4bde1e99ce
QuasarRAT
e5c85df9a9b6f84f76c64b41c07a4f52f16a373eae80c713765a5cf43ced3e8d
QuasarRAT
f7b9f44883cc004d34cd03dd739cbecccb3ff66824856d30dcdc31d6b5165aff
QuasarRAT
+ 105 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 pyinstaller spyware stealer trojan
Link:
https://tria.ge/reports/230327-qext5sff31/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Detects Pyinstaller
Suspicious use of NtSetInformationThreadHideFromDebugger
Executes dropped EXE
Loads dropped DLL
Reads user/profile data of web browsers
Blocklisted process makes network request
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
144.126.133.48:4782
Dropper Extraction:
http://193.42.33.232/meokl/KK2023.zip
Unpacked files
SH256 hash:
a7a5ce7c3c6fe4c23529f1254a71b8772327e3b68f1adceff98d7c2fb9af0315
MD5 hash:
278c9b22482531cac9433e57d900bbf7
SHA1 hash:
c58d0af1f005f25b9d7e2774cdb10cc48c15a201
Link:
https://www.unpac.me/results/24ccdc83-7d39-4ded-947d-eb831a96e18c/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a7a5ce7c3c6f/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/a7a5ce7c3c6fe4c23529f1254a71b8772327e3b68f1adceff98d7c2fb9af0315

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:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller.
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/

File information

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

  
Dropped by
PrivateLoader
  
Delivery method
Distributed via drive-by
Cape
Cape
https://www.capesandbox.com/analysis/377901/

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