MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991. 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: 16


Intelligence 16 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991
SHA3-384 hash: 4d849aadcca0ee948924294de54e2a250dafd3f7570a4fb8d7dab387060a0c5ec694edbff3fa58329975bebd9971b6b7
SHA1 hash: 4cc35c23f2ce252413249ecd2ea47967fc00d5a4
MD5 hash: c28ef8671a7f140f9385ab177e38844b
humanhash: oklahoma-glucose-diet-carolina
File name:New Purchase Order-0304243220- SMART SOURCING INC.pdf____________________________________________________.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'485'312 bytes
First seen:2024-11-18 18:22:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'743 x AgentTesla, 19'608 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:2fcOokxZ4FK9VlPprK7w5NljuDvdLwLEcXq8dxSaDygxpy3nZOJcllvB:2P8FMhQiXhxkKcOUv
Threatray 1'679 similar samples on MalwareBazaar
TLSH T1D1653B4913D8A635D5BE8B376EF1485087B3B543D7E1E74A5EC8B8E98883768784C323
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter cocaman
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
477
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
asyncrat
Create hunting rule
ID:
1
File name:
fd396e9e-d6f5-418b-82f8-929ca61a65a6
Verdict:
Malicious activity
Analysis date:
2024-11-18 18:24:08 UTC
Tags:
rat asyncrat remote quasar evasion
Link:
https://app.any.run/tasks/fd396e9e-d6f5-418b-82f8-929ca61a65a6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.10580.24597.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=673b87a75107a56eacc79a94
Tags:
virus gates abel
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Connection attempt to an infection source
Creating a file in the %AppData% directory
Launching a process
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Using the Windows Management Instrumentation requests
Query of malicious DNS domain
Sending a TCP request to an infection source
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade
Link:
https://www.filescan.io/uploads/673b860baec40b7c5c478bf4/reports/e9b3259f-c3d5-4b77-9754-20d5f3b935d7/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991
Malware family:
Agent Tesla
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/c17adcfb-a9f2-4e2c-90df-e0ec4dace257
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1557955
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Drops VBS files to the startup folder
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: Suspicious Double Extension File Execution
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Costura Assembly Loader
Yara detected Generic Downloader
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1557955 Sample: ________.exe Startdate: 18/11/2024 Architecture: WINDOWS Score: 100 29 aboushagor.ydns.eu 2->29 31 www.oleonidas.gr 2->31 33 3 other IPs or domains 2->33 51 Suricata IDS alerts for network traffic 2->51 53 Found malware configuration 2->53 55 Malicious sample detected (through community Yara rule) 2->55 57 13 other signatures 2->57 8 ________.exe 15 5 2->8         started        13 wscript.exe 1 2->13         started        signatures3 process4 dnsIp5 35 oleonidas.gr 185.78.221.73, 443, 49730, 49734 IPHOSTGRIpDomainGR Greece 8->35 23 C:\Users\user\AppData\...\StackTrace.exe, PE32 8->23 dropped 25 C:\Users\...\StackTrace.exe:Zone.Identifier, ASCII 8->25 dropped 27 C:\Users\user\AppData\...\StackTrace.vbs, ASCII 8->27 dropped 59 Drops VBS files to the startup folder 8->59 61 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->61 63 Writes to foreign memory regions 8->63 65 Injects a PE file into a foreign processes 8->65 15 InstallUtil.exe 15 2 8->15         started        67 Windows Scripting host queries suspicious COM object (likely to drop second stage) 13->67 19 StackTrace.exe 14 2 13->19         started        file6 signatures7 process8 dnsIp9 37 aboushagor.ydns.eu 69.174.98.113, 49731, 6542 ASN-QUADRANET-GLOBALUS United States 15->37 39 ipwho.is 195.201.57.90, 443, 49733 HETZNER-ASDE Germany 15->39 41 Hides that the sample has been downloaded from the Internet (zone.identifier) 15->41 43 Multi AV Scanner detection for dropped file 19->43 45 Machine Learning detection for dropped file 19->45 47 Writes to foreign memory regions 19->47 49 Injects a PE file into a foreign processes 19->49 21 InstallUtil.exe 3 19->21         started        signatures10 process11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991/
Threat name:
ByteCode-MSIL.Downloader.Quasar
Create hunting rule
Status:
Malicious
First seen:
2024-11-18 18:22:31 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
14 of 38 (36.84%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=76sy5pawrzfbtqyrbf5zozc2lweadwzde32oq6clmngd4lrn5giq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
02f0a7f184fcdaaa4d9a46ca29712c8daae0a46d2038bd362dc818025df8d553
QuasarRAT
4e6e48275b1f3412edc045e1a81d509ddcfe360c06bdd4483fcd5b4fc77b7ef3
QuasarRAT
56bd84e77da1de080c2d5c42b6f101574e7146b200026ea9468703d742edec10
QuasarRAT
7c9b4c774fbf907cf1858ea31454992e16d6b6521f880fcd8a12433ce25b6b35
QuasarRAT
a2b66f9f80d2add5e7b13f9e75b6c964e53d7aa2e52065b469b83f7e7c31fa7c
QuasarRAT
b4a61a178dfda52928802e1189f3bf1bef1c03aecf6b6fc99d2a3713f3d5e202
QuasarRAT
b70b64872a21f338463d0e6b1f2a45bb186ad711317164192b64e54a19baef85
QuasarRAT
error
QuasarRAT
+ 1'669 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:chim discovery spyware trojan
Link:
https://tria.ge/reports/241118-w1fqmssgml/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Drops startup file
Quasar RAT
Quasar family
Quasar payload
Suspicious use of NtCreateUserProcessOtherParentProcess
Malware Config
C2 Extraction:
aboushagor.ydns.eu:6542
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1e9d7471-aba4-490a-a4b3-cf3d065a48de
Unpacked files
SH256 hash:
ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991
MD5 hash:
c28ef8671a7f140f9385ab177e38844b
SHA1 hash:
4cc35c23f2ce252413249ecd2ea47967fc00d5a4
Link:
https://www.unpac.me/results/073cd6a7-7b12-452c-8692-128145e96568/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/ffa58ebc168e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991

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:NET
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

QuasarRAT

rar 035f44415228a4f73d1aab1a7f3ff75b8138f2b093586b49cf4faef32587863b

QuasarRAT

Executable exe ffa58ebc168e4a19c311097b97645a5d8801db2326f4e8784b634c3e2e2de991

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 035f44415228a4f73d1aab1a7f3ff75b8138f2b093586b49cf4faef32587863b
  
Dropped by
MD5 8cbbbbc1432a5368e903073e28c54603

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
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments