MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 f2ef8e3af2210af33bd69b473f393395d8c84f7361bceb9123d3bd7bf0f2bf9f. 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: 13
| SHA256 hash: | f2ef8e3af2210af33bd69b473f393395d8c84f7361bceb9123d3bd7bf0f2bf9f |
|---|---|
| SHA3-384 hash: | a3ba5bb8accb5387eecd85ec76723c30678d0dd5d966894482d9988b5d57fab230b06fab4ff8066b08d0d96a147107a1 |
| SHA1 hash: | 3c53ec26158b96953383b49d1e42a81539084223 |
| MD5 hash: | a74107dbe22c3264da1d845f72a7d1aa |
| humanhash: | march-monkey-minnesota-berlin |
| File name: | opera.exe |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 18'189'146 bytes |
| First seen: | 2025-05-01 08:10:06 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'611 x Formbook, 12'242 x SnakeKeylogger) |
| ssdeep | 196608:XM9it0avmJd6QqOyjr2LF3Ye6YmnwqdU142UaWFsbQ61GJ:8vH1cjSLFoBYmn5U1PgsMt |
| Threatray | 24 similar samples on MalwareBazaar |
| TLSH | T1EB07AE41B7F88F26D0BE5375A4B211154BF1EC96BB62C64A714CB1AE2B727002A5733F |
| TrID | 72.2% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.3% (.EXE) Win64 Executable (generic) (10522/11/4) 4.9% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.4% (.EXE) Win32 Executable (generic) (4504/4/1) 2.0% (.ICL) Windows Icons Library (generic) (2059/9) |
| Magika | pebin |
| dhash icon | 8c3733696933378c (1 x QuasarRAT) |
| Reporter |  adm1n_usa32 |
| Tags: | exe QuasarRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
494
Origin country :
USVendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
opera.zip
Verdict:
Malicious activity
Analysis date:
2025-05-01 08:08:55 UTC
Tags:
arch-exec uac
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
99.9%
Tags:
vmdetect quasar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Enabling the 'hidden' option for analyzed file
Сreating synchronization primitives
Creating a window
DNS request
Moving of the original file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
agenttesla anti-vm danabot explorer fingerprint lolbin obfuscated overlay quasar rat rat reconnaissance regedit remote wscript
Verdict:
Malicious
Labled as:
Trojan.Generic
Result
Threat name:
Nitol
Detection:
malicious
Classification:
troj
Score:
76 / 100
Signature
Antivirus / Scanner detection for submitted sample
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected Nitol
Behaviour
Behavior Graph:
Score:
95%
Verdict:
Malware
File Type:
PE
Threat name:
ByteCode-MSIL.Infostealer.ClipBanker
Status:
Malicious
First seen:
2025-04-30 06:33:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
96
AV detection:
27 of 36 (75.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
asyncrat
Similar samples:
+ 14 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
3/10
Tags:
n/a
Behaviour
Suspicious behavior: RenamesItself
Verdict:
Malicious
Tags:
rat quasar_rat Win.Packed.Msilperseus-9956592-0
YARA:
Quasar_RAT_1
Unpacked files
SH256 hash:
f2ef8e3af2210af33bd69b473f393395d8c84f7361bceb9123d3bd7bf0f2bf9f
MD5 hash:
a74107dbe22c3264da1d845f72a7d1aa
SHA1 hash:
3c53ec26158b96953383b49d1e42a81539084223
SH256 hash:
450302c26d7d3d22e2c82d9146af0b0b84d7482c7a859078b22795283a013f2a
MD5 hash:
4f430ad45c332d5d8fbb8cf8817af1b5
SHA1 hash:
50bcbc66899143561ff461a557d3703c994c8bf0
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: | AgentTesla_DIFF_Common_Strings_01 |
|---|---|
| Author: | schmidtsz |
| Description: | Identify partial Agent Tesla strings |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| 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: | Jupyter_infostealer |
|---|---|
| Author: | CD_R0M_ |
| Description: | Rule for Jupyter Infostealer/Solarmarker malware from september 2021-December 2022 |
| Rule name: | Lumma_Stealer_Detection |
|---|---|
| Author: | ashizZz |
| Description: | Detects a specific Lumma Stealer malware sample using unique strings and behaviors |
| Reference: | https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/ |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | Quasar_RAT_1 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| Description: | Detects Quasar RAT |
| Reference: | https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf |
| Rule name: | Quasar_RAT_1 |
|---|---|
| Author: | @SOCRadar |
| Description: | Detects Quasar RAT |
| 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: | RANSOMWARE |
|---|---|
| Author: | ToroGuitar |
| Rule name: | Rooter |
|---|---|
| Author: | Seth Hardy |
| Description: | Rooter |
| Rule name: | RooterStrings |
|---|---|
| Author: | Seth Hardy |
| Description: | Rooter Identifying Strings |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Sus_Obf_Enc_Spoof_Hide_PE |
|---|---|
| Author: | XiAnzheng |
| Description: | Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP) |
| Rule name: | vmdetect |
|---|---|
| Author: | nex |
| Description: | Possibly employs anti-virtualization techniques |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
BLint
The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.
Findings
| ID | Title | Severity |
|---|---|---|
| CHECK_AUTHENTICODE | Missing Authenticode | high |
| CHECK_DLL_CHARACTERISTICS | Missing dll Security Characteristics (GUARD_CF) | high |
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