MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ac3541b6d4bf8c6378303f254ba10e0b7c628130345ee8c13e4801cee1770dc5. 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
| SHA256 hash: | ac3541b6d4bf8c6378303f254ba10e0b7c628130345ee8c13e4801cee1770dc5 |
|---|---|
| SHA3-384 hash: | 215ab2825330693527d977210f620404ecbf88318ec3a97eecf2284d9454d958849b59f3320802e77f7155987012913f |
| SHA1 hash: | 2364eafd5bcda1ed9ceafd9a068fbacd5200b95d |
| MD5 hash: | 537dafd9730284b0377e1311150146a4 |
| humanhash: | vegan-rugby-vermont-uniform |
| File name: | 537dafd9730284b0377e1311150146a4 |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 514'048 bytes |
| First seen: | 2021-06-30 03:40:54 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 6144:lTEgdc0YNX7IxUpGREW9R7I7CfWOkXis/1jcEoAb8F9J+KcTR3m:lTEgdfYWxUE8C1HKlYjjlcdm |
| Threatray | 70 similar samples on MalwareBazaar |
| TLSH | 2DB47C4063F8862BE17F5779E9710420A7F4F42BB267EB9F5540A2F92E667028E40773 |
| Reporter |  zbetcheckin |
| Tags: | 32 exe QuasarRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
139
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
537dafd9730284b0377e1311150146a4
Verdict:
Malicious activity
Analysis date:
2021-06-30 03:44:12 UTC
Tags:
trojan rat quasar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarStealer
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
Verdict:
Malicious
Result
Threat name:
Quasar
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.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
Found malware configuration
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Detection:
quasar
Threat name:
ByteCode-MSIL.Trojan.Quasar
Status:
Malicious
First seen:
2021-06-27 00:23:18 UTC
AV detection:
25 of 29 (86.21%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 60 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar botnet:st spyware trojan
Behaviour
Creates scheduled task(s)
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Looks up external IP address via web service
Executes dropped EXE
Quasar Payload
Quasar RAT
Malware Config
C2 Extraction:
fit.microgent.ru:6668
Unpacked files
SH256 hash:
ac3541b6d4bf8c6378303f254ba10e0b7c628130345ee8c13e4801cee1770dc5
MD5 hash:
537dafd9730284b0377e1311150146a4
SHA1 hash:
2364eafd5bcda1ed9ceafd9a068fbacd5200b95d
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
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: | CAP_HookExKeylogger |
|---|---|
| Author: | Brian C. Bell -- @biebsmalwareguy |
| Reference: | https://github.com/DFIRnotes/rules/blob/master/CAP_HookExKeylogger.yar |
| Rule name: | Chrome_stealer_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Chrome in files like avemaria |
| Rule name: | Glasses |
|---|---|
| Author: | Seth Hardy |
| Description: | Glasses family |
| Rule name: | GlassesCode |
|---|---|
| Author: | Seth Hardy |
| Description: | Glasses code features |
| Rule name: | INDICATOR_SUSPICIOUS_GENInfoStealer |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables containing common artifcats observed in infostealers |
| Rule name: | Keylog_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | Contains Keylog |
| 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: | pe_imphash |
|---|
| Rule name: | Select_from_enumeration |
|---|---|
| Author: | James_inthe_box |
| Description: | IP and port combo |
| 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/ |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Delivery method
Distributed via web download
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