MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 21a2ffb6f0d2707fbddb33cc13852529cf14e75b5d2348ef3c4b704d250d8535. 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
| SHA256 hash: | 21a2ffb6f0d2707fbddb33cc13852529cf14e75b5d2348ef3c4b704d250d8535 |
|---|---|
| SHA3-384 hash: | 0e1f55952060f6fe5c76115df3423d9c56d4e6edc94a0eefbff2f173321e1019cab0772cd1081bf488927e6748e5a407 |
| SHA1 hash: | 5ad7bfaf75959cdde650298e579f67c0161f27bb |
| MD5 hash: | c80febad7d8f2d6b9b4ca8484f810b78 |
| humanhash: | uniform-alaska-sad-spring |
| File name: | 21a2ffb6f0d2707fbddb33cc13852529cf14e75b5d2348ef3c4b704d250d8535 |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 614'912 bytes |
| First seen: | 2021-03-01 13:01:48 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 6144:88fGABIgrx8kFYLTiMkbM6ke1gybgXXEVTouERyaRhYDGy3V8/GV0jivyabBYFBt:tPx7FYPiMcgeVLFaRhYinEAmDu |
| Threatray | 178 similar samples on MalwareBazaar |
| TLSH | 05D48D6077E48E5AE1AE0B7EE43246118772FC4AA766F30F1A8575AE3C333455C41BA3 |
| Reporter |  c3rb3ru5d3d53c2 |
| Tags: | QuasarRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
108
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
21a2ffb6f0d2707fbddb33cc13852529cf14e75b5d2348ef3c4b704d250d8535
Verdict:
Malicious activity
Analysis date:
2021-03-01 13:08:46 UTC
Tags:
evasion trojan rat quasar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Result
Verdict:
Malware
Maliciousness:
Behaviour
Using the Windows Management Instrumentation requests
DNS request
Sending an HTTP GET request
Creating a window
Setting a keyboard event handler
Creating a file in the %AppData% subdirectories
Connection attempt
Sending a UDP request
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:
Quasar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code references suspicious native API functions
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Contains functionality to hide user accounts
Hides that the sample has been downloaded from the Internet (zone.identifier)
Installs a global keyboard hook
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 submitted file
Protects its processes via BreakOnTermination flag
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Backdoor.Zapchast
Status:
Malicious
First seen:
2021-02-24 05:50:18 UTC
AV detection:
37 of 48 (77.08%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 168 additional samples on MalwareBazaar
Result
Malware family:
venomrat
Score:
10/10
Tags:
family:venomrat rat rootkit stealer
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Looks up external IP address via web service
VenomRAT
Unpacked files
SH256 hash:
21a2ffb6f0d2707fbddb33cc13852529cf14e75b5d2348ef3c4b704d250d8535
MD5 hash:
c80febad7d8f2d6b9b4ca8484f810b78
SHA1 hash:
5ad7bfaf75959cdde650298e579f67c0161f27bb
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Zapchast
Score:
1.00
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: | Certutil_Decode_OR_Download |
|---|---|
| Author: | Florian Roth |
| Description: | Certutil Decode |
| Reference: | Internal Research |
| Rule name: | Chrome_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Chrome in files like avemaria |
| 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: | Email_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Email in files like avemaria |
| 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_DisableWinDefender |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables containing artifcats associated with disabling Widnows Defender |
| Rule name: | INDICATOR_SUSPICIOUS_EXE_References_CryptoWallets |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables referencing many cryptocurrency mining wallets or apps. Observed in information stealers |
| Rule name: | IPPort_combo_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| Rule name: | Keylog_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Contains Keylog |
| Rule name: | MALWARE_Win_QuasarRAT |
|---|---|
| Author: | ditekSHen |
| Description: | QuasarRAT payload |
| Rule name: | MAL_Envrial_Jan18_1 |
|---|---|
| Author: | Florian Roth |
| Description: | Detects Encrial credential stealer malware |
| Reference: | https://twitter.com/malwrhunterteam/status/953313514629853184 |
| 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: | Quasar |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect QuasarRAT in memory |
| 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_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: | RDPWrap |
|---|---|
| Author: | @bartblaze |
| Description: | Identifies RDP Wrapper, sometimes used by attackers to maintain persistence. |
| Reference: | https://github.com/stascorp/rdpwrap |
| Rule name: | Select_from_enumeration |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| Rule name: | Stealer_word_in_memory |
|---|---|
| Author: | James_inthe_box |
| Description: | The actual word stealer in memory |
| 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 |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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