MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585. 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


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585
SHA3-384 hash: f9f7a68f54f1f2019243b7facbcd31afc6118d9595dbe83538bc2fac2bce7743966ec4e89ae1a1a2193376b001d38aa4
SHA1 hash: 162ac652149fce9d761e207a36eb51eaf0342c08
MD5 hash: 266e7f8e020e3391eda09ab951897a37
humanhash: table-washington-pizza-carpet
File name:Client-built.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'503'232 bytes
First seen:2025-04-15 00:38:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:CAS44+WDOnqZt4QXq49O0dBTncfCmTj3dDCUybaa8UgY2w7cWWOAnz+g3T:CfKnqfO0fYTj3dDC58UgY7Af9j
Threatray 1 similar samples on MalwareBazaar
TLSH T1D465335FC7E891E6EA61683C97365684D1AB8AC309D4ED3DEBD16E74F48C10108FEB18
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 Anonymous
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
493
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Client-built.exe
Verdict:
Malicious activity
Analysis date:
2025-04-15 00:26:22 UTC
Tags:
crypto-regex
Link:
https://app.any.run/tasks/f03dfc6e-7a46-498b-af63-09830a948bad

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/2227/
Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67fdb6661dba888a93d4075d
Tags:
keylog remo word
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Connection attempt
Setting a keyboard event handler
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/67fdaaac931404048d7ee9ad/reports/777881ca-597d-49af-bd2f-501e4dfdc950/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/a6b3dc0a-5060-40b4-bab3-1ef44e9b89ab
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1665022
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
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
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for submitted file
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-04-15 00:39:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qghphuata2nhxlgtx5guu4ukz2pkosvvdd5uvx74ycrd6v7ewwcq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585
QuasarRAT
error
QuasarRAT
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/250415-azntzavnx2/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/4027a525-6a45-4bd7-853f-93bf08cc7ae0
Unpacked files
SH256 hash:
818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585
MD5 hash:
266e7f8e020e3391eda09ab951897a37
SHA1 hash:
162ac652149fce9d761e207a36eb51eaf0342c08
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
SH256 hash:
83830ef501cdb08ca6a8b945350038af838741e40e76fe13a515f90807be26ee
MD5 hash:
b0e27c052045cfe2a99cf4a1c1900a06
SHA1 hash:
059d093a462af4651ad8004a869ab92111589701
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
SH256 hash:
a0af255ea4b09a8cdb995b8c6fd1075e46f098e23c2351c974e6ded9b8b620cf
MD5 hash:
c52a44933d17d576d4c97b4cb0545841
SHA1 hash:
092696fdcc034910aa02c94a5c93f4e1e86e0c50
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
Parent samples :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 hash:
fcd72298f734a47cfad2d15cf13d34ec34bc971b1e20af83b8b4f3ddfd9a6c59
MD5 hash:
9013a57654910fa04cd376b514f374d0
SHA1 hash:
3b5d36a1deac10f43954fe8acb367f1bec7400a1
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
SH256 hash:
c9736bed57d137a0bd4a454a70436020312db5a365bdd243037e766695c18ccd
MD5 hash:
41b34eab1585d5381c56730b93dd1310
SHA1 hash:
510b640517342dbcc40c81b63db23fa1444a71ed
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
SH256 hash:
f2178fb14e652b202e57f15d7d3f5139ea4d0a5a43d6a579ac3dcc2a8cf5e0d6
MD5 hash:
73e688d09cd825ce4defd8c4a9de8b9c
SHA1 hash:
7702a4b571f9796ce5e638cd01b7d49faaa394d0
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
SH256 hash:
bc0243134c93c55ea105d0e9c2a43b6030e973290d0a061cf3a61986a2268a88
MD5 hash:
d2edde626c241549eab636aa87fb5d38
SHA1 hash:
8d836febd477b3ec44cc37f4f0aecdaa1d7db788
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
SH256 hash:
7acbe7cfc63c2f3c1b6a29dc078acf555d21c48e28a4e03ab837c502916ee870
MD5 hash:
012ebe4691df4f29f97853469b8f3838
SHA1 hash:
9d0a9584de5f0d956a76c99188b8432d852b2f56
Detections:
SUSP_NET_Large_Static_Array_In_Small_File_Jan24
Create hunting rule
HKTL_NET_GUID_Quasar
Create hunting rule
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
SH256 hash:
7999c95169010a0b42f32f1e8b9f8a7af404ff0ac18baf6aea2285c753050da7
MD5 hash:
e01d85474632e9355eade666d5fe8dc6
SHA1 hash:
e3f721e13c02c81386d1ce02ca26d13c7353127b
Detections:
INDICATOR_EXE_Packed_Fody
Create hunting rule
Link:
https://www.unpac.me/results/0f746968-5e0e-4ac9-8026-93368505547d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
iSpy Keylogger
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/818ef3d013069a7bacd3bf4d4a728ace9ea74ab518fb4adffcc0a23f57e4b585

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:NETexecutableMicrosoft
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
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/2227/

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 (HIGH_ENTROPY_VA)high

Comments