MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 3f94a886d4917d5cba86e9b604d001e649cc048286376c4cff495658d68b117a. 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: 19
| SHA256 hash: | 3f94a886d4917d5cba86e9b604d001e649cc048286376c4cff495658d68b117a |
|---|---|
| SHA3-384 hash: | bfab395c0adc8c391d5da83b14afeeb37ba60b27de4ce1440d2a697c43093574495bf27c8261717d5624b8cc75487d12 |
| SHA1 hash: | 550b1d0b015bc113385372721e08d786c79dfaf5 |
| MD5 hash: | f81122e657f99437cbe70ddcf18f3cd2 |
| humanhash: | triple-friend-montana-missouri |
| File name: | f81122e657f99437cbe70ddcf18f3cd2 |
| Download: | download sample |
| Signature | QuasarRAT |
| File size: | 3'265'536 bytes |
| First seen: | 2024-07-30 05:25:40 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'653 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger) |
| ssdeep | 49152:RvCI22SsaNYfdPBldt698dBcjHQ9RJ6kbR37oGdNTHHB72eh2NT:RvP22SsaNYfdPBldt6+dBcjHQ9RJ6C |
| Threatray | 754 similar samples on MalwareBazaar |
| TLSH | T1F2E56B143BF85E27E1BBE277A5B0041267F0FC1AF363EB0B6581677A1C53B5098426A7 |
| TrID | 37.4% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 29.5% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 8.4% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 6.7% (.SCR) Windows screen saver (13097/50/3) 5.3% (.EXE) Win64 Executable (generic) (10523/12/4) |
| Reporter |  zbetcheckin |
| Tags: | 32 exe QuasarRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
354
Origin country :
FRVendor Threat Intelligence
Malware family:
quasar
ID:
1
File name:
f81122e657f99437cbe70ddcf18f3cd2
Verdict:
Malicious activity
Analysis date:
2024-07-30 05:40:08 UTC
Tags:
quasar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Tags:
Execution Generic Infostealer Network Stealth Quasar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Сreating synchronization primitives
Launching a process
Setting a keyboard event handler
Connecting to a non-recommended domain
Connection attempt
Enabling autorun by creating a file
Verdict:
Malicious
Labled as:
Malware
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.spyw.evad
Score:
100 / 100
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Found malware configuration
Found potential dummy code loops (likely to delay analysis)
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)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Score:
99%
Verdict:
Malware
File Type:
PE
Detection:
quasar
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Status:
Malicious
First seen:
2024-07-29 08:47:52 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
21 of 24 (87.50%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 744 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:quasar botnet:office08 spyware trojan
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Enumerates physical storage devices
Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
85.28.47.123:4782
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
3f94a886d4917d5cba86e9b604d001e649cc048286376c4cff495658d68b117a
MD5 hash:
f81122e657f99437cbe70ddcf18f3cd2
SHA1 hash:
550b1d0b015bc113385372721e08d786c79dfaf5
Detections:
QuasarRAT
malware_windows_xrat_quasarrat
win_quasarrat_j2
cn_utf8_windows_terminal
MAL_QuasarRAT_May19_1
Malware family:
QuasarRAT
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
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: | BLOWFISH_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for Blowfish constants |
| Rule name: | Diff_QuasarRAT_01 |
|---|---|
| Author: | schmidtsz |
| Description: | Identify QuasarRAT samples |
| 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 artifacts observed in infostealers |
| Rule name: | MALWARE_Win_QuasarStealer |
|---|---|
| Author: | ditekshen |
| Description: | Detects Quasar infostealer |
| Rule name: | MAL_QuasarRAT_May19_1 |
|---|---|
| Description: | Detects QuasarRAT malware |
| Rule name: | MAL_QuasarRAT_May19_1 |
|---|---|
| Author: | Florian Roth (Nextron Systems) |
| 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: | MD5_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for MD5 constants |
| Rule name: | Multifamily_RAT_Detection |
|---|---|
| Author: | Lucas Acha (http://www.lukeacha.com) |
| Description: | Generic Detection for multiple RAT families, PUPs, Packers and suspicious executables |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | NETexecutableMicrosoft |
|---|---|
| Author: | malware-lu |
| Rule name: | pe_imphash |
|---|
| Rule name: | RC6_Constants |
|---|---|
| Author: | chort (@chort0) |
| Description: | Look for RC6 magic constants in binary |
| Reference: | https://twitter.com/mikko/status/417620511397400576 |
| Rule name: | RIPEMD160_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for RIPEMD-160 constants |
| Rule name: | SHA1_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA1 constants |
| Rule name: | SHA512_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for SHA384/SHA512 constants |
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Windows_Generic_Threat_803feff4 |
|---|---|
| Author: | Elastic Security |
| Rule name: | win_quasar_rat_client |
|---|---|
| Author: | Matthew @ Embee_Research |
| Description: | Detects strings present in Quasar Rat Samples. |
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
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 (HIGH_ENTROPY_VA) | high |
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