MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b44027c9af078c4c6d342a86a2187db9721629494bf5d7e5a216e32fa40ed578. 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: 11


Intelligence 11 IOCs YARA 18 File information Comments 1

SHA256 hash: b44027c9af078c4c6d342a86a2187db9721629494bf5d7e5a216e32fa40ed578
SHA3-384 hash: 00e361247588e980ce07047ae817a3e9c2bd30af4c67f3ff68b48bd865e280ee0750791280ef9cd0fe1834c4aec8a371
SHA1 hash: b09f5272fd3f911942b858b2bf44271d6dc35922
MD5 hash: e0bec57ad4a766c5a484bca6adc1cfc5
humanhash: king-minnesota-mexico-magazine
File name:e0bec57ad4a766c5a484bca6adc1cfc5
Download: download sample
Signature QuasarRAT
File size:983'040 bytes
First seen:2022-07-29 15:44:00 UTC
Last seen:2022-07-29 16:33:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'454 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:BuSbS1ZWoe51SPG5UI9agWtyE8k402YzbafRiJXgzCcV2mvwgy:vS1Uoe5sPGDknafRiS2o2mvwg
Threatray 365 similar samples on MalwareBazaar
TLSH T16325F1DD362071EEC817C4728A685C78AA543C7E831B4247912B3DAFBA7C997DF144B2
TrID 30.2% (.EXE) Win64 Executable (generic) (10523/12/4)
18.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
14.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
12.9% (.EXE) Win32 Executable (generic) (4505/5/1)
5.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 78c0db4cea7aa0fc (33 x AveMariaRAT, 23 x QuasarRAT, 1 x Loki)
Reporter zbetcheckin
Tags:exe QuasarRAT

Intelligence


File Origin
# of uploads :
2
# of downloads :
446
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
Using the Windows Management Instrumentation requests
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a window
Unauthorized injection to a recently created process
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a recently created process by context flags manipulation
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
67%
Tags:
confuserex packed
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Detected unpacking (changes PE section rights)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Snort IDS alert for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 675733 Sample: HFBn6vc663 Startdate: 29/07/2022 Architecture: WINDOWS Score: 100 59 Snort IDS alert for network traffic 2->59 61 Multi AV Scanner detection for domain / URL 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 8 other signatures 2->65 9 HFBn6vc663.exe 1 2->9         started        13 HFBn6vc663.exe 2->13         started        15 HFBn6vc663.exe 2->15         started        17 HFBn6vc663.exe 2->17         started        process3 file4 55 C:\Users\user\AppData\...\HFBn6vc663.exe.log, ASCII 9->55 dropped 69 Detected unpacking (changes PE section rights) 9->69 71 May check the online IP address of the machine 9->71 73 Uses schtasks.exe or at.exe to add and modify task schedules 9->73 19 HFBn6vc663.exe 16 4 9->19         started        75 Injects a PE file into a foreign processes 13->75 24 HFBn6vc663.exe 3 13->24         started        26 HFBn6vc663.exe 15->26         started        28 HFBn6vc663.exe 17->28         started        signatures5 process6 dnsIp7 57 ip-api.com 208.95.112.1, 49765, 49840, 49842 TUT-ASUS United States 19->57 53 C:\Users\user\AppData\Roaming\...\cores.exe, PE32 19->53 dropped 67 Hides that the sample has been downloaded from the Internet (zone.identifier) 19->67 30 cores.exe 1 19->30         started        33 schtasks.exe 1 19->33         started        35 schtasks.exe 24->35         started        37 cores.exe 24->37         started        39 schtasks.exe 28->39         started        41 cores.exe 28->41         started        file8 signatures9 process10 signatures11 77 Multi AV Scanner detection for dropped file 30->77 79 Detected unpacking (changes PE section rights) 30->79 81 Machine Learning detection for dropped file 30->81 43 cores.exe 30->43         started        45 conhost.exe 33->45         started        47 conhost.exe 35->47         started        49 conhost.exe 39->49         started        process12 process13 51 WerFault.exe 23 11 43->51         started       
Threat name:
ByteCode-MSIL.Trojan.Quasar
Status:
Malicious
First seen:
2022-07-29 15:44:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
3
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:quasar botnet:vop spyware trojan
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Looks up external IP address via web service
Loads dropped DLL
Executes dropped EXE
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
dnuocc.com:64594
www.dnuocc.com:64594
Unpacked files
SH256 hash:
1cd6f43175c9d2d3bd07005eff1eda84a51e81aa71cdd5627e01d58fded2501a
MD5 hash:
d5ecba9f0f604d1de773a84d88f77533
SHA1 hash:
ff4ca8953987b95ba06201d8a54d4d587529b10f
SH256 hash:
f8a4c26b1e58d10440bfe558803434cdc81e727fecc43b891952b580c3af54be
MD5 hash:
d84aa86a5a14415e8726306279df8444
SHA1 hash:
5912be2760cdac16939d142cbfe32978969d44b5
SH256 hash:
b44027c9af078c4c6d342a86a2187db9721629494bf5d7e5a216e32fa40ed578
MD5 hash:
e0bec57ad4a766c5a484bca6adc1cfc5
SHA1 hash:
b09f5272fd3f911942b858b2bf44271d6dc35922
Please note that we are no longer able to provide a coverage score for Virus Total.

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:CN_disclosed_20180208_KeyLogger_1
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:CN_disclosed_20180208_KeyLogger_1_RID3227
Author:Florian Roth
Description:Detects malware from disclosed CN malware set
Reference:https://www.virustotal.com/graph/#/selected/n120z79z208z189/drawer/graph-details
Rule name:INDICATOR_EXE_Packed_ConfuserEx
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Author:ditekSHen
Description:Detects Windows executables referencing non-Windows User-Agents
Rule name:INDICATOR_SUSPICIOUS_GENInfoStealer
Author:ditekSHen
Description:Detects executables containing common artifcats observed in infostealers
Rule name:malware_Quasar_strings
Author:JPCERT/CC Incident Response Group
Description:detect QuasarRAT in memory
Rule name:MALWARE_Win_QuasarRAT
Author:ditekSHen
Description:QuasarRAT payload
Rule name:MAL_QuasarRAT_May19_1
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:MAL_QuasarRAT_May19_1_RID2E1E
Author:Florian Roth
Description:Detects QuasarRAT malware
Reference:https://blog.ensilo.com/uncovering-new-activity-by-apt10
Rule name:pe_imphash
Rule name:Quasar_RAT_1
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_1_RID2B54
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Quasar_RAT_2_RID2B55
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash
Rule name:Vermin_Keylogger_Jan18_1
Author:Florian Roth
Description:Detects Vermin Keylogger
Reference:https://researchcenter.paloaltonetworks.com/2018/01/unit42-vermin-quasar-rat-custom-malware-used-ukraine/
Rule name:xRAT_1
Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W
Rule name:xRAT_1_RID2900
Author:Florian Roth
Description:Detects Patchwork malware
Reference:https://goo.gl/Pg3P4W

File information


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

Web download

QuasarRAT

Executable exe b44027c9af078c4c6d342a86a2187db9721629494bf5d7e5a216e32fa40ed578

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-07-29 15:44:15 UTC

url : hxxps://www.js-hurling.com/crccontent/nvsdnfnnoanforhaihuefnabfsgf/ghfngngfxhnfhhgbvvnmh.exe