MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9
SHA3-384 hash: f7c76887cf88382fd4652deb52f4639ad68b39c8000b6757bf0b6d124852f0e47332e9e9807c9d2d16fb9b6cf8371361
SHA1 hash: 525eb0de7ba38e6edfe0859d1ec13d7a8c0bd980
MD5 hash: 54c46775c1b685518960ebe90bb8386b
humanhash: freddie-missouri-london-kentucky
File name:client-built.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:1'849'856 bytes
First seen:2025-08-24 14:59:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'654 x AgentTesla, 19'464 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 49152:7NugmYxuCbYtBPHmYCFpWRY4eT7p4RSPGOSEr:71/9bYDPHmYCLWRCBuSPGOSE
Threatray 91 similar samples on MalwareBazaar
TLSH T1B885332BE4B9C0AFD3113836ECF18963FF5D07C36A34D10526B56F94F04212B65AE66A
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 abuse_ch
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
64
Origin country :
SE SE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
client-built.exe
Verdict:
Malicious activity
Analysis date:
2025-08-24 11:31:54 UTC
Tags:
auto-reg
Link:
https://app.any.run/tasks/99e5746b-e7ad-44f3-bf32-caeb5c31caf6

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/23253/
Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68aaf829e9d9dbcfd96d84d7
Tags:
autorun micro spawn sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Enabling the 'hidden' option for recently created files
Creating a process from a recently created file
Creating a file
Connection attempt
Sending a custom TCP request
DNS request
Using the Windows Management Instrumentation requests
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
base64 packed
Link:
https://www.filescan.io/uploads/68ab292c253799db621b5023/reports/e0ee59f7-e332-40d2-9ea9-42791c3844a4/overview
Verdict:
Malicious
Labled as:
IL:Trojan.MSILZilla
Link:
https://www.hybrid-analysis.com/sample/ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-08-24T08:37:00Z UTC
Last seen:
2025-08-24T08:37:00Z UTC
Hits:
~10
Detections:
Trojan.MSIL.Quasar.a HEUR:Trojan.Win32.Generic HEUR:Trojan.MSIL.Cryptos.gen PDM:Trojan.Win32.Tasker.cust PDM:Trojan.Win32.Generic HEUR:Trojan.MSIL.Quasar.gen Trojan-PSW.MSIL.Agent.sb
Link:
https://opentip.kaspersky.com/ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9/results?tab=lookup
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/973075a9-14c6-4b65-b826-8b96cb01f585
Result
Threat name:
Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1763967
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample uses string decryption to hide its real strings
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.62 Win 32 Exe x86
Link:
https://app.malva.re/file/54c46775c1b685518960ebe90bb8386b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9/
Verdict:
Malicious
Threat:
Trojan.MSIL.Cryptos
Link:
https://tip.neiki.dev/file/ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9
Threat name:
ByteCode-MSIL.Trojan.Zilla
Create hunting rule
Status:
Malicious
First seen:
2025-08-24 11:31:54 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=3x77xejkywpxotkfeulola2ntyaxlw4wbdur5osfg6nhrm6fh6uq._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
4b0912cff58f405a3335f0d2685f3eb8a03ed1f85c899ad5f6235a66cb7faf2a
QuasarRAT
4d99b92df452a113bafe2af82d237225ff93afe39fae138305b8201b179357c1
QuasarRAT
507b813f47259eadd4260cb58e5a8244799d0ac3075d68147095b1bd9a2b7593
QuasarRAT
5d6b6bcd74ed29295040fe1622bd3c681fe2b729eaa9f24b4538d1db6eb2e3e3
QuasarRAT
7645e0b22c7ea622d164b55b3449831e99bcf4de66c31ac0afaa877cef03248e
QuasarRAT
ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9
QuasarRAT
error
QuasarRAT
+ 81 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
defense_evasion execution persistence spyware trojan
Link:
https://tria.ge/reports/250824-sdsj5sbn6z/
Behaviour
Modifies system certificate store
Scheduled Task/Job: Scheduled Task
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Uses Task Scheduler COM API
Executes dropped EXE
Modifies trusted root certificate store through registry
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/06066bcd-ff75-4452-9306-e078170b2b2b
Unpacked files
SH256 hash:
ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9
MD5 hash:
54c46775c1b685518960ebe90bb8386b
SHA1 hash:
525eb0de7ba38e6edfe0859d1ec13d7a8c0bd980
Link:
https://www.unpac.me/results/f31e2904-0dfe-496b-ad6d-749380832c30/
SH256 hash:
3e88bc65141ab4da07f36d97bb1184b57ba3c718a828880530b38816cec8542e
MD5 hash:
46a70e4744dda18bf14f0ddf59f5e071
SHA1 hash:
37958a44c860f1732bbebfbd3c1ab17e153cc4ea
Link:
https://www.unpac.me/results/f31e2904-0dfe-496b-ad6d-749380832c30/
SH256 hash:
c1046a94e4042f0a622670cd6a01ca235609732d8ef68889e87fc947d754c5f5
MD5 hash:
8f786e161e0925e8a7c5602f64fff988
SHA1 hash:
4f90a7c051bb4a8e95a43916a4e979b1daadfffa
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/f31e2904-0dfe-496b-ad6d-749380832c30/
Parent samples :
0065d42e62b532221d6ec96913cdedd45d3e84b1d50076b478a5d0a22608b536
c7cfa4eb2cce54eae7d5af7025931c424e48c3dd28dcdb76399e4ab23a4c1f6e
9b7be09c491e55dc424bbf7f3281b467d7e26d918263d925bb4b624fc25ff616
8ca07bac80251aac5bae7418c53144e723c1750d400faaac1678c55457f0f64a
565ba37db962f10ea77fab2be20b5d65672a72c7bbda35cf5538a236a3f63337
7645e0b22c7ea622d164b55b3449831e99bcf4de66c31ac0afaa877cef03248e
ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9
71d675e36d237be76f9141742350f8b2d94d8cefa2b9b3b62622703193c15414
544f187d0b620cb18a494ea3ec51472e504eac944ef59dc4b5de1c60a9d5800e
e2c14df722dfbb0c3a8c4228034f37ba6395babc29ad2aa9f4a175f37a839831
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/ddfffb912ac59f774d452516e5834d9e0175db9608e91eba45379a78b3c53fa9

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:CP_AllMal_Detector
Create hunting rule
Author:DiegoAnalytics
Description:CrossPlatform All Malwares Detector: Detect PE, ELF, Mach-O, scripts, archives; overlay, obfuscation, encryption, spoofing, hiding, high entropy, network communication
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_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
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/23253/

Comments