MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c1b7c826bcd46069430612557a69fdf0d99ee79015067c8f251bdc81df1d2c5c. 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


Intelligence 12 IOCs YARA 16 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c1b7c826bcd46069430612557a69fdf0d99ee79015067c8f251bdc81df1d2c5c
SHA3-384 hash: 1bcafe355bb4b7ae4e6611ff3c1374d7889a7ab290ad6393e726a32b9726363db8c77a86e7830bc78317363f8431d593
SHA1 hash: 412761df0d2cffb209613b4056e0f390e8fa4f45
MD5 hash: 875733d4503afba3839d41811f71c8ec
humanhash: wolfram-burger-spaghetti-speaker
File name:875733d4503afba3839d41811f71c8ec
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'085'952 bytes
First seen:2022-09-11 07:51:23 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'663 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:pLynkc1ZzBvtrZHFjMKY2BBOQMelwLocdZJO1:Zynkc1ZzBvtrZHFjMKY26QMelTcvJ
Threatray 12'133 similar samples on MalwareBazaar
TLSH T1E9353924F7E45695F0AE7F72747098010B38FE03A57DD74B2B9691990A6A380DCB2F63
TrID 53.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
12.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
9.6% (.SCR) Windows screen saver (13101/52/3)
7.7% (.EXE) Win64 Executable (generic) (10523/12/4)
4.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
Reporter zbetcheckin
Tags:32 exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
377
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
875733d4503afba3839d41811f71c8ec
Verdict:
Malicious activity
Analysis date:
2022-09-11 07:54:31 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d09ba4b4-4742-4728-8260-89990c5748b0

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/309277/
Detection(s):
Win.Malware.Ursu-9802322-0
Create hunting rule

ditekSHen.MALWARE.Win.Trojan.NWorm.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Creating a file in the Program Files subdirectories
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Sending a custom TCP request
Creating a file in the %temp% directory
Running batch commands
Creating a process with a hidden window
Creating a file
Adding an access-denied ACE
Forced system process termination
BSOD occurred
Unauthorized injection to a recently created process
Creating a file in the mass storage device
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm cmd.exe cmstp.exe evasive explorer.exe fingerprint fingerprint keylogger netsh.exe packed packed quasarrat rat regasm.exe schtasks.exe stealer update.exe
Link:
https://www.filescan.io/uploads/631d93add06d9bc4c7b89b60/reports/d12eec16-8024-4746-9ca7-948c105678c1/overview
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.
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/263a4e4e-ceae-4e11-b566-50c4998e1c7f
Result
Threat name:
AsyncRAT, Clipboard Hijacker, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1068406
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Connects to a pastebin service (likely for C&C)
Contains functionality to disable the Task Manager (.Net Source)
Contains functionality to hide user accounts
Hides that the sample has been downloaded from the Internet (zone.identifier)
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 dropped file
Multi AV Scanner detection for submitted file
Protects its processes via BreakOnTermination flag
Snort IDS alert for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses ping.exe to check the status of other devices and networks
Uses ping.exe to sleep
Writes or reads registry keys via WMI
Yara detected AntiVM3
Yara detected AsyncRAT
Yara detected Clipboard Hijacker
Yara detected Generic Downloader
Yara detected Quasar RAT
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 700938 Sample: vzZ0bmI6GU.exe Startdate: 11/09/2022 Architecture: WINDOWS Score: 100 65 ip-api.com 2->65 67 workday2022.hopto.org 2->67 81 Snort IDS alert for network traffic 2->81 83 Malicious sample detected (through community Yara rule) 2->83 85 Antivirus detection for dropped file 2->85 89 18 other signatures 2->89 10 vzZ0bmI6GU.exe 15 12 2->10         started        15 skype.exe 2->15         started        17 skype.exe 2->17         started        signatures3 87 May check the online IP address of the machine 65->87 process4 dnsIp5 75 ip-api.com 208.95.112.1, 49721, 49727, 49731 TUT-ASUS United States 10->75 77 pastebin.com 104.20.68.143, 443, 49724 CLOUDFLARENETUS United States 10->77 79 192.168.2.1 unknown unknown 10->79 61 C:\Program Files (x86)\skype.exe, PE32 10->61 dropped 63 C:\Users\user\AppData\...\vzZ0bmI6GU.exe.log, ASCII 10->63 dropped 103 May check the online IP address of the machine 10->103 105 Hides that the sample has been downloaded from the Internet (zone.identifier) 10->105 19 skype.exe 17 9 10->19         started        24 cmd.exe 1 10->24         started        file6 signatures7 process8 dnsIp9 69 workday2022.hopto.org 19->69 71 ip-api.com 19->71 59 C:\Users\user\AppData\Localxecution2.vbs, ASCII 19->59 dropped 91 Protects its processes via BreakOnTermination flag 19->91 93 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->93 26 wscript.exe 1 19->26         started        28 cmd.exe 1 19->28         started        31 wscript.exe 1 19->31         started        95 Uses ping.exe to sleep 24->95 97 Uses ping.exe to check the status of other devices and networks 24->97 33 conhost.exe 24->33         started        35 PING.EXE 1 24->35         started        37 chcp.com 1 24->37         started        file10 signatures11 process12 signatures13 39 skype.exe 8 26->39         started        43 skype.exe 26->43         started        45 skype.exe 26->45         started        55 5 other processes 26->55 107 Uses ping.exe to sleep 28->107 47 conhost.exe 28->47         started        49 chcp.com 28->49         started        51 PING.EXE 28->51         started        53 skype.exe 28->53         started        109 Writes or reads registry keys via WMI 31->109 process14 dnsIp15 73 ip-api.com 39->73 99 Protects its processes via BreakOnTermination flag 39->99 101 Hides that the sample has been downloaded from the Internet (zone.identifier) 39->101 57 wscript.exe 39->57         started        signatures16 process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/c1b7c826bcd46069430612557a69fdf0d99ee79015067c8f251bdc81df1d2c5c/
Threat name:
ByteCode-MSIL.Trojan.ClipBanker
Create hunting rule
Status:
Malicious
First seen:
2022-09-07 00:45:47 UTC
File Type:
PE (.Net Exe)
Extracted files:
30
AV detection:
22 of 26 (84.62%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=yg34qjv42rqgsqygcjkxu2p56dmz5z4qcudhzdzfdpoidxy5froa._file
Verdict:
malicious
Similar samples:
32bf6a730cca597011b8e619bad0168190337b8e96db09e2fe214b436d8f2f69
QuasarRAT
547679ede9037e0edceeaa3e10b5f9ba6b8af47e6a3fa38b825c769005f182ef
QuasarRAT
5d8823c74c9bd0d2b25fd7d4443d4652cb92c2513c6e5e339884619052672880
QuasarRAT
70da0f06cb454d93d73583cda4ecd7e33fcf788d3ea4cec57aa06c00670bb682
QuasarRAT
7fa160e2ee00bd1ace890c6761f0bb81ea43a8937dffb003229dd4b232027a6b
QuasarRAT
98ed685e58c13887c499cef7806acfd58d771bdcf95b60d8c7604fd500a466ba
QuasarRAT
b988c0f23891eb55f3c66c0409aa327da666d9b084d309e1d8907976c36027ed
QuasarRAT
d1769c69f1e4ea60bf17e10853d24d83941b132ff80026a9af50f0e243564629
QuasarRAT
ef4292a933e33418776d69b89f4cba6fc5acb974eccebd852c0d31cc16161dcc
QuasarRAT
+ 12'123 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:skype client persistence spyware trojan
Link:
https://tria.ge/reports/220911-jqd3vabcc7/
Behaviour
Modifies registry class
Runs ping.exe
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
workday2022.hopto.org:4788
Unpacked files
SH256 hash:
b6d9d621e4d98f800da89001f4a9bbca321f075d7c919c25b3d7e5f12e2940f6
MD5 hash:
5cc13ec23e5ef635af16fbdc32c8405d
SHA1 hash:
33688127582e86ee2ba499edc5ef60769b79b38b
Link:
https://www.unpac.me/results/b2bab169-790f-4f3a-86a8-1e06ddddb17b/
SH256 hash:
c1b7c826bcd46069430612557a69fdf0d99ee79015067c8f251bdc81df1d2c5c
MD5 hash:
875733d4503afba3839d41811f71c8ec
SHA1 hash:
412761df0d2cffb209613b4056e0f390e8fa4f45
Link:
https://www.unpac.me/results/b2bab169-790f-4f3a-86a8-1e06ddddb17b/
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/c1b7c826bcd46069430612557a69fdf0d99ee79015067c8f251bdc81df1d2c5c

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:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_DisableWinDefender
Create hunting rule
Author:ditekSHen
Description:Detects executables embedding registry key / value combination indicative of disabling Windows Defedner features
Rule name:INDICATOR_SUSPICIOUS_EXE_RegKeyComb_IExecuteCommandCOM
Create hunting rule
Author:ditekSHen
Description:Detects executables embedding command execution via IExecuteCommand COM object
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_CMSTPCMD
Create hunting rule
Author:ditekSHen
Description:Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:malware_Quasar_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:MALWARE_Win_DLAgent09
Create hunting rule
Author:ditekSHen
Description:Detects known downloader agent
Rule name:MALWARE_Win_DLAgent10
Create hunting rule
Author:ditekSHen
Description:Detects known downloader agent
Rule name:MALWARE_Win_QuasarRAT
Create hunting rule
Author:ditekSHen
Description:QuasarRAT payload
Rule name:MAL_QuasarRAT_May19_1
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MAL_QuasarRAT_May19_1_RID2E1E
Create hunting rule
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:pdb_YARAify
Create hunting rule
Author:@wowabiy314
Description:PDB
Rule name:pe_imphash
Create hunting rule
Rule name:RDPWrap
Create hunting rule
Author:@bartblaze
Description:Identifies RDP Wrapper, sometimes used by attackers to maintain persistence.
Reference:https://github.com/stascorp/rdpwrap
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Web download

QuasarRAT

Executable exe c1b7c826bcd46069430612557a69fdf0d99ee79015067c8f251bdc81df1d2c5c

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2299286/
  
URLhaus
https://urlhaus.abuse.ch/url/2299362/
Cape
Cape
https://www.capesandbox.com/analysis/309277/

Comments


Avatar
zbet commented on 2022-09-11 07:51:26 UTC

url : hxxp://81.161.229.110/htdocs/iLDPdXERkzRFYtJ.exe