MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0ef4667fb2bd5b2184048913181bd7b03bf63d0e7959214b879efa4d6b75ad5d. 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: 14


Intelligence 14 IOCs 1 YARA 8 File information Comments

SHA256 hash: 0ef4667fb2bd5b2184048913181bd7b03bf63d0e7959214b879efa4d6b75ad5d
SHA3-384 hash: 43a2714821033c62325d2ab03ff8411e2c98aa4617f1614741483914ca69f06b0abddf4c79134777519dcccdcecdf273
SHA1 hash: 83527df5a484494894ad2c71908a170a115751af
MD5 hash: a73e083297e46d8e23f012d66a08f3a3
humanhash: music-low-purple-equal
File name:a73e083297e46d8e23f012d66a08f3a3.exe
Download: download sample
Signature QuasarRAT
File size:2'902'016 bytes
First seen:2022-10-09 13:35:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 49152:SHXKqPIxP2ayFJafBpT8m0f50tfmtza32ehyfTgy:SHnP8P2ayFEZKm0fX
Threatray 97 similar samples on MalwareBazaar
TLSH T1A9D55B1973F84E2BD06ED7B2E5B0945253F0F81AF3A39B4B658162791C53B106D823BB
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)
File icon (PE):PE icon
dhash icon 92e0b496a6cada72 (12 x RedLineStealer, 7 x RaccoonStealer, 5 x BlankGrabber)
Reporter abuse_ch
Tags:exe QuasarRAT RAT


Avatar
abuse_ch
QuasarRAT C2:
173.225.115.99:7702

Indicators Of Compromise (IOCs)


Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
173.225.115.99:7702 https://threatfox.abuse.ch/ioc/872510/

Intelligence


File Origin
# of uploads :
1
# of downloads :
533
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Creating a process from a recently created file
Creating a file
Setting a keyboard event handler
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-vm keylogger quasar quasarrat rat stealer
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.
Result
Threat name:
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
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
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
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: 719070 Sample: VFepZ2WBCS.exe Startdate: 09/10/2022 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic 2->36 38 Malicious sample detected (through community Yara rule) 2->38 40 Antivirus / Scanner detection for submitted sample 2->40 42 5 other signatures 2->42 8 VFepZ2WBCS.exe 5 2->8         started        12 VFepZ2WBCS.exe 2 2->12         started        process3 file4 26 C:\Users\user\AppData\...\FileHistory.exe, PE32 8->26 dropped 28 C:\Users\user\AppData\...\VFepZ2WBCS.exe.log, CSV 8->28 dropped 44 Uses schtasks.exe or at.exe to add and modify task schedules 8->44 46 Hides that the sample has been downloaded from the Internet (zone.identifier) 8->46 14 FileHistory.exe 14 2 8->14         started        18 schtasks.exe 1 8->18         started        signatures5 process6 dnsIp7 30 173.225.115.99, 49703, 7702 WEBAIR-INTERNET-3CA United States 14->30 32 tools.keycdn.com 185.172.148.96, 443, 49705 PROINITYPROINITYDE Germany 14->32 34 2 other IPs or domains 14->34 48 Antivirus detection for dropped file 14->48 50 Multi AV Scanner detection for dropped file 14->50 52 May check the online IP address of the machine 14->52 54 4 other signatures 14->54 20 schtasks.exe 1 14->20         started        22 conhost.exe 18->22         started        signatures8 process9 process10 24 conhost.exe 20->24         started       
Threat name:
ByteCode-MSIL.Trojan.Quasar
Status:
Malicious
First seen:
2022-10-02 16:09:00 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
23 of 26 (88.46%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:quasar botnet:skynet spyware trojan
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Looks up external IP address via web service
Executes dropped EXE
Quasar payload
Quasar RAT
Malware Config
C2 Extraction:
173.225.115.99:7702
Unpacked files
SH256 hash:
0ef4667fb2bd5b2184048913181bd7b03bf63d0e7959214b879efa4d6b75ad5d
MD5 hash:
a73e083297e46d8e23f012d66a08f3a3
SHA1 hash:
83527df5a484494894ad2c71908a170a115751af
Detections:
QuasarRAT
Malware family:
QuasarRAT
Verdict:
Malicious
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:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
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_Win_QuasarStealer
Author:ditekshen
Description:Detects Quasar infostealer
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:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

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