MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0. 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: 18


Intelligence 18 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0
SHA3-384 hash: 0c196ed08790ba3cabe8dbd9b189101fb659df843e5bc3ef0163136747429b55ea9b9aff4f08a48900c371908bd7e70e
SHA1 hash: 6d7c3c4be6fc4d4c47341edb9e097d9745a829e6
MD5 hash: 6828d778a57df3285cde194e271c5e5a
humanhash: alpha-mars-pluto-dakota
File name:Especificaciones del presupuesto _ PO-20260525048166 E2S A105N.pdf(783KB).lha.exe
Download: download sample
Signature QuasarRAT
Create hunting rule
File size:5'972'992 bytes
First seen:2026-05-26 06:50:10 UTC
Last seen:2026-06-08 08:38:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (49'131 x AgentTesla, 20'159 x Formbook, 12'362 x SnakeKeylogger)
ssdeep 98304:AXoFsj50Ix7rP7MRvvk0rCvzRfEXW9C34K6UACDX:01/rPIt80rRW9Z4A
Threatray 1'005 similar samples on MalwareBazaar
TLSH T16556122127941828E1798B74583A5583C7F2FD0D5B71CB2E368AD16D4A32B46EF92F33
TrID 73.9% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
6.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
6.6% (.EXE) Win64 Executable (generic) (6522/11/2)
4.5% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
Reporter lowmal3
Tags:exe QuasarRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
158
Origin country :
DE DE
Vendor Threat Intelligence
No detections
Malware family:
n/a
ID:
1
File name:
Especificacionesdelpresupuesto_PO-20260525048166E2SA105N.pdf783KB.lha.exe
Verdict:
Suspicious activity
Analysis date:
2026-05-26 06:53:39 UTC
Tags:
netreactor auto-reg
Link:
https://app.any.run/tasks/9c14129d-11b4-43a9-9633-c705fa2126b6

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
QuasarRAT
Create hunting rule
Link:
https://www.capesandbox.com/analysis/67957/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Basic.8.Gen.67821643.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6a1542c95d76862ef947e0f9
Tags:
autorun shell micro sage
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Sending a custom TCP request
Restart of the analyzed sample
Сreating synchronization primitives
Creating a file in the %AppData% subdirectories
Launching a process
Creating a file
Enabling autorun by creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
masquerade obfuscated obfuscated reconnaissance vbnet
Link:
https://www.filescan.io/uploads/6a1547324bb6e36d180348a0/reports/d7640d29-dad2-40f2-bf76-9d5df9d64bf2/overview
Verdict:
Malicious
Labled as:
Trojan.MSIL.Basic.8
Link:
https://www.hybrid-analysis.com/sample/9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-05-25T13:35:00Z UTC
Last seen:
2026-05-28T04:43:00Z UTC
Hits:
~1000
Detections:
VHO:Backdoor.Win32.Agent.gen PDM:Trojan.Win32.Generic HEUR:Trojan.MSIL.Quasar.gen Trojan.MSIL.Inject.b
Link:
https://opentip.kaspersky.com/9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0/results?tab=lookup
Malware family:
Quasar RAT
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b3ad4786-b0a9-4441-be42-c8afbceffa93
Result
Threat name:
DarkTortilla, Quasar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1918468
Signature
.NET source code contains potential unpacker
Found malware configuration
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potential Privilege Escalation using Task Scheduler highest RunLevel
Reads the Security eventlog
Reads the System eventlog
Sample uses string decryption to hide its real strings
Suricata IDS alerts for network traffic
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected DarkTortilla Crypter
Yara detected MSIL Injector
Yara detected Quasar RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1918468 Sample: Especificaciones del presup... Startdate: 26/05/2026 Architecture: WINDOWS Score: 100 44 twart.myfirewall.org 2->44 46 ipwho.is 2->46 48 bg.microsoft.map.fastly.net 2->48 56 Suricata IDS alerts for network traffic 2->56 58 Found malware configuration 2->58 60 Malicious sample detected (through community Yara rule) 2->60 62 11 other signatures 2->62 11 Especificaciones del presupuesto _ PO-20260525048166 E2S A105N.pdf(783KB).lha.exe 2 3 2->11         started        15 workbook.exe 2 2->15         started        signatures3 process4 file5 42 Especificaciones d...(783KB).lha.exe.log, ASCII 11->42 dropped 70 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->70 72 Injects a PE file into a foreign processes 11->72 74 Reads the Security eventlog 11->74 76 Reads the System eventlog 11->76 17 Especificaciones del presupuesto _ PO-20260525048166 E2S A105N.pdf(783KB).lha.exe 4 11->17         started        21 workbook.exe 15->21         started        23 workbook.exe 15->23         started        signatures6 process7 file8 40 C:\Users\user\AppData\...\workbook.exe, PE32 17->40 dropped 54 Hides that the sample has been downloaded from the Internet (zone.identifier) 17->54 25 workbook.exe 3 17->25         started        28 schtasks.exe 1 17->28         started        signatures9 process10 signatures11 64 Multi AV Scanner detection for dropped file 25->64 66 Hides that the sample has been downloaded from the Internet (zone.identifier) 25->66 68 Injects a PE file into a foreign processes 25->68 30 workbook.exe 15 2 25->30         started        34 conhost.exe 28->34         started        process12 dnsIp13 50 twart.myfirewall.org 64.89.162.10, 49695, 9792 PIO-HOSTINGDE Netherlands 30->50 52 ipwho.is 104.20.44.133, 443, 49697 CLOUDFLARENET-CloudflareIncUS Canada 30->52 78 Hides that the sample has been downloaded from the Internet (zone.identifier) 30->78 80 Installs a global keyboard hook 30->80 36 schtasks.exe 30->36         started        signatures14 process15 process16 38 conhost.exe 36->38         started       
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0
Verdict:
inconclusive
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET PE (Portable Executable) PE File Layout SOS: 0.84 Win 32 Exe x86
Link:
https://app.malva.re/file/6828d778a57df3285cde194e271c5e5a
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0/
Verdict:
Malicious
Threat:
Family.QUASAR
Link:
https://tip.neiki.dev/file/9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0
Threat name:
ByteCode-MSIL.Trojan.DarkCloud
Create hunting rule
Status:
Malicious
First seen:
2026-05-25 17:05:24 UTC
File Type:
PE (.Net Exe)
Extracted files:
288
AV detection:
26 of 37 (70.27%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tla4dw5bx2l42kg5rdcmrmz2psyi25qbcvzhrzeugpvzwhbihtya._file
Verdict:
malicious
Label(s):
quasarrat
Create hunting rule
Similar samples:
16b394d76cf5663a9370672de28ef6016233c3d4415492a731834ef01f1386fe
QuasarRAT
2c03efcf8673a901a4d51f24e3d4f4ed698f9b4782b53a8c254dd1a1a00a2604
QuasarRAT
40c6d95876d7a085020471145c41cd5a16090625919d5de147334a52d24a6f1b
QuasarRAT
53aefcb31cf737d2af9779bea562b358bb08c876bb68fbe5614c1084decb6728
QuasarRAT
b17c1605a8564b9772a2a90db59803ce70a2dbaeefcb3a7aedec732b87146b2f
QuasarRAT
error
QuasarRAT
+ 995 additional samples on MalwareBazaar
Result
Malware family:
quasar
Create hunting rule
Score:
  10/10
Tags:
family:quasar botnet:cbz-r discovery execution persistence spyware trojan
Link:
https://tria.ge/reports/260526-hl9taads6n/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
.NET Reactor proctector
Executes dropped EXE
Family: Quasar RAT
Quasar payload
Malware Config
C2 Extraction:
twart.myfirewall.org:9792
rency.ydns.eu:9792
code1.ydns.eu:9792
wqo9.firewall-gateway.de:9792
Unpacked files
SH256 hash:
9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0
MD5 hash:
6828d778a57df3285cde194e271c5e5a
SHA1 hash:
6d7c3c4be6fc4d4c47341edb9e097d9745a829e6
Link:
https://www.unpac.me/results/6517e2c3-5a2f-403d-9d26-5b0aa3e5f7cb/
SH256 hash:
6e859aafe0f02cff0898aab8ed4e73959718a4f5d675682e01a537dd5efe55bc
MD5 hash:
176f66ecd8d22c0ddbaf07fe9c7f1533
SHA1 hash:
56563884d3e06e0467ce40b4331ee92001708305
Link:
https://www.unpac.me/results/6517e2c3-5a2f-403d-9d26-5b0aa3e5f7cb/
SH256 hash:
6fa723d4d102c0837b14624086ac8b39983258215efeef374941c5f7448e2858
MD5 hash:
827b37ba91e50b9349e2dd7c2683953b
SHA1 hash:
61e0f0c67ce5dbdddf55e958d2db4ff06cbb5931
Link:
https://www.unpac.me/results/6517e2c3-5a2f-403d-9d26-5b0aa3e5f7cb/
SH256 hash:
7877e7ed6b8397da512217760150c169a875fd2b842c6eb73a181b34807e2fb2
MD5 hash:
c5b4d15344764f7b2a227afbdc705691
SHA1 hash:
f58e77be4cebd2e8190e15877cea0575afae285f
Detections:
QuasarRAT
Create hunting rule
Link:
https://www.unpac.me/results/6517e2c3-5a2f-403d-9d26-5b0aa3e5f7cb/
SH256 hash:
1aee60354365664e00eafd7fb827b3e662bbd320d46babfef2dbf4b9305f19d2
MD5 hash:
ddfd9c3559c5c8d4d473f9e4d9d44dd9
SHA1 hash:
f9da451287a129279a665e270744ff89e3b69d7e
Link:
https://www.unpac.me/results/6517e2c3-5a2f-403d-9d26-5b0aa3e5f7cb/
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/9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0

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: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

File information

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

Malspam

QuasarRAT

Executable exe 9ac1c1dba1be97cd28dd88c4c8b33a7cb08d7601157278e49433eb9b1c283cf0

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/67957/

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