MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a
SHA3-384 hash: 4bd8c4c839f478b6e64be012edb11e474e3ea8d7d553fd21f6d13e541154ccda5dbd5d7ec098641c79c008201f1029fb
SHA1 hash: 2e4a7ca7d6029750336a59531fa92bb863200c8d
MD5 hash: ebbb525d514b2725487ea56391c67268
humanhash: mobile-emma-steak-nitrogen
File name:file
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:2'314'240 bytes
First seen:2024-11-07 01:55:03 UTC
Last seen:2024-11-07 01:55:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 49152:Gll+JYqBe/XaZ9VMaAsRr1CwHLSJ1xGpocF8oWrwOcbRKF6Buu0:NJ1YXw11CwHLY1YOo4wBg
Threatray 917 similar samples on MalwareBazaar
TLSH T143B5230ED7A94916E65F1633F0CB94624BB0E8646F8BD346208C49FE1C1BF9B4963B53
TrID 67.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.7% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.1% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter Bitsight
Tags:exe QuasarRAT


Avatar
Bitsight
url: http://tmpfiles.org/dl/15302079/user2.exe

Intelligence

File Origin
# of uploads :
28
# of downloads :
1'927
Origin country :
US US
Vendor Threat Intelligence
Malware family:
quasar
Create hunting rule
ID:
1
File name:
file
Verdict:
Malicious activity
Analysis date:
2024-11-07 01:57:47 UTC
Tags:
purecrypter netreactor quasar
Link:
https://app.any.run/tasks/41de5286-75f7-4d4c-be41-3ccee598ee31

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Packed.Msilheracles-10017859-0
Create hunting rule

Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=672c1dfc8d23d90491349506
Tags:
smartassembly autorun exploit packed
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a file in the %AppData% directory
Launching a process
Creating a window
Connection attempt to an infection source
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected smartassembly smart_assembly
Link:
https://www.filescan.io/uploads/672c1e3318f00732417b48c2/reports/e3c1f3c2-ed24-4e02-bcdf-abc2c84478cb/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/6d9bc865-87c9-4ba4-8e13-a7ac514de388
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1550687
Signature
.NET source code contains potential unpacker
AI detected suspicious sample
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
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 signatures2 2 Behavior Graph ID: 1550687 Sample: file.exe Startdate: 07/11/2024 Architecture: WINDOWS Score: 100 29 Multi AV Scanner detection for domain / URL 2->29 31 Found malware configuration 2->31 33 Malicious sample detected (through community Yara rule) 2->33 35 11 other signatures 2->35 7 file.exe 5 2->7         started        11 wscript.exe 1 2->11         started        process3 file4 21 C:\Users\user\AppData\Roaming\CountOut.exe, PE32 7->21 dropped 23 C:\Users\user\AppData\...\CountOut.vbs, ASCII 7->23 dropped 25 C:\Users\...\CountOut.exe:Zone.Identifier, ASCII 7->25 dropped 37 Drops VBS files to the startup folder 7->37 39 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 7->39 41 Writes to foreign memory regions 7->41 43 Injects a PE file into a foreign processes 7->43 13 InstallUtil.exe 8 7->13         started        45 Windows Scripting host queries suspicious COM object (likely to drop second stage) 11->45 17 CountOut.exe 2 11->17         started        signatures5 process6 dnsIp7 27 162.230.48.189, 4782, 49710, 49733 ATT-INTERNET4US United States 13->27 47 Hides that the sample has been downloaded from the Internet (zone.identifier) 13->47 49 Multi AV Scanner detection for dropped file 17->49 51 Machine Learning detection for dropped file 17->51 53 Writes to foreign memory regions 17->53 55 Injects a PE file into a foreign processes 17->55 19 InstallUtil.exe 3 17->19         started        signatures8 process9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a/
Threat name:
ByteCode-MSIL.Backdoor.Quasar
Create hunting rule
Status:
Malicious
First seen:
2024-11-07 01:56:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=kryyvn5jhyvcuahdkwsy36q5i4aoychjevydxnznpis52amxh2na._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
02f0a7f184fcdaaa4d9a46ca29712c8daae0a46d2038bd362dc818025df8d553
QuasarRAT
1fea532c75a33209f094f835261b4f579613a7b2ece7f046a11309d34537f8d5
QuasarRAT
4e6e48275b1f3412edc045e1a81d509ddcfe360c06bdd4483fcd5b4fc77b7ef3
QuasarRAT
a2b66f9f80d2add5e7b13f9e75b6c964e53d7aa2e52065b469b83f7e7c31fa7c
QuasarRAT
b4a61a178dfda52928802e1189f3bf1bef1c03aecf6b6fc99d2a3713f3d5e202
QuasarRAT
b70b64872a21f338463d0e6b1f2a45bb186ad711317164192b64e54a19baef85
QuasarRAT
error
QuasarRAT
+ 907 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:office04 discovery spyware trojan
Link:
https://tria.ge/reports/241107-cb6e8avnbn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
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:
162.230.48.189:4782
Verdict:
Malicious
Tags:
Win.Packed.Msilheracles-10017859-0
YARA:
n/a
Link:
https://app.threat.zone/submission/4ec69530-bd5a-48b5-903f-392cfbf1b368
Unpacked files
SH256 hash:
91fdffccff461ff217ca2f79ac0e7d44711ebcc453641d7e31ab3b4b253abdf7
MD5 hash:
ce5705400041d986a00d835e45415289
SHA1 hash:
f4edd820b41d600b7b8cfc541b09135487a8b4d3
Detections:
QuasarRAT
Create hunting rule
malware_windows_xrat_quasarrat
Create hunting rule
win_quasar_rat_client
Create hunting rule
win_quasarrat_j2
Create hunting rule
MALWARE_Win_QuasarStealer
Create hunting rule
cn_utf8_windows_terminal
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_NoneWindowsUA
Create hunting rule
MAL_QuasarRAT_May19_1
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_GENInfoStealer
Create hunting rule
Link:
https://www.unpac.me/results/7c4b6307-e18b-4b17-b4f2-dac6b6ccddf6/
SH256 hash:
7af64efc9d035e67b43fe09d4d29dfd2deeadfbaac134f7096606122e79f1b5f
MD5 hash:
afa440902d6a6d3c1f6f93976bc076c9
SHA1 hash:
836546a9c7c7406d3f6ff66212917423fdb0f691
Link:
https://www.unpac.me/results/7c4b6307-e18b-4b17-b4f2-dac6b6ccddf6/
SH256 hash:
86a387fa1c05263d78168dc90d91a3685ca7323bd4ec8e6d3077a99f4d6b1fa8
MD5 hash:
ed73c7806fa31f54100e800218e80809
SHA1 hash:
7741af5e2cf92888a44eac1fe9ecbb56b5e20244
Link:
https://www.unpac.me/results/7c4b6307-e18b-4b17-b4f2-dac6b6ccddf6/
SH256 hash:
356c932d662659dfcc1728ff0e44ba62e63dfb2ccd5df66605a6da2a658f05ec
MD5 hash:
7074156544088f7255d6813442d2fdfc
SHA1 hash:
4bccc20f0f489be4b7e87e56de419a4b8b512d72
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/7c4b6307-e18b-4b17-b4f2-dac6b6ccddf6/
SH256 hash:
19efdf03cb94895935225795f68bb9abfded1869687367013b8b4eee3cc99372
MD5 hash:
4e29f75c0c51b9dec76955f0382d9541
SHA1 hash:
4899aa8e3f57339cbaec8faab777897a76fe1c3a
Link:
https://www.unpac.me/results/7c4b6307-e18b-4b17-b4f2-dac6b6ccddf6/
SH256 hash:
78f73e1734daa918b253517c75971fbb8df773a3d77d02a752e9a0ad1711a677
MD5 hash:
f9d2985aa1c41cca281321fffb5ed424
SHA1 hash:
3a7a58d2dcae2762882357ae34d372744b1dbb9d
Link:
https://www.unpac.me/results/7c4b6307-e18b-4b17-b4f2-dac6b6ccddf6/
SH256 hash:
54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a
MD5 hash:
ebbb525d514b2725487ea56391c67268
SHA1 hash:
2e4a7ca7d6029750336a59531fa92bb863200c8d
Link:
https://www.unpac.me/results/7c4b6307-e18b-4b17-b4f2-dac6b6ccddf6/
Malware family:
QuasarRAT
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/54718ab7a93e/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.

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:INDICATOR_EXE_Packed_SmartAssembly
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with SmartAssembly
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.

Web download

QuasarRAT

Executable exe 54718ab7a93e2a2a00e355a58dfa1d4700ec08e925703bb72d7a25dd01973e9a

(this sample)

  
Dropped by
Amadey
  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3279536/

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

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