MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f. 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


RemcosRAT


Vendor detections: 17


Intelligence 17 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f
SHA3-384 hash: 2d16db7a444c2197b2cbdc320cb50c952df69d6e80e83f9defb5f68fd4313c79ea7d6b42024722f8e731d5517e0a006b
SHA1 hash: c83e60eaf04e2fafcdf0960e83498dadafdd5d13
MD5 hash: 9dbeedd3ded509fd0b2058fe03cdce91
humanhash: oranges-cat-vegan-march
File name:REF - 2514271 - PO_NO #20205 09739011AGK.pdf(84KB).com
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:1'411'072 bytes
First seen:2025-09-02 05:47:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:HXK3GZOPLlP+E6vWPjCnRveYepqMKDmfC4KOSSn2P6EK7:HXGYoF+EiWPWRveYkqM3fC41p20
Threatray 4'022 similar samples on MalwareBazaar
TLSH T1BC65E02663C15F80D1BEAB34B27810C087F0A68BD725D69F7CFC01DDAE65F891662663
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 lowmal3
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
95
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a0587a3c78467133e44ddd990a08d42a781531d85938954b1845021ca0331949.zip
Verdict:
No threats detected
Analysis date:
2025-09-01 20:01:20 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8c5111d9-60cd-4856-8f87-6e22a41bc770

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Remcos
Create hunting rule
Link:
https://www.capesandbox.com/analysis/24652/
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68b684feeb163e0ec1841d2e
Tags:
remcos virus msil remo
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Unauthorized injection to a recently created process
Sending a custom TCP request
Restart of the analyzed sample
Launching a process
Creating a process with a hidden window
Running batch commands
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
formbook keylogger masquerade obfuscated obfuscated remcos rescoms snake unsafe vbnet
Link:
https://www.filescan.io/uploads/68b6851e39a6221faa79cacb/reports/a37bce90-8e46-4a83-a689-3db09efb07ac/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-01T11:12:00Z UTC
Last seen:
2025-09-01T11:12:00Z UTC
Hits:
~1000
Link:
https://opentip.kaspersky.com/4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/cfc8df1c-70a9-4715-9224-1fba192f8ea2
Result
Threat name:
DarkTortilla, Remcos
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1769254
Signature
.NET source code contains potential unpacker
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to register a low level keyboard hook
Contains functionality to steal Chrome passwords or cookies
Contains functionality to steal Firefox passwords or cookies
Contains functionalty to change the wallpaper
Delayed program exit found
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
Sigma detected: Script Interpreter Execution From Suspicious Folder
Sigma detected: Suspicious Script Execution From Temp Folder
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Tries to delay execution (extensive OutputDebugStringW loop)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Yara detected AntiVM3
Yara detected DarkTortilla Crypter
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1769254 Sample: REF - 2514271 - PO_NO #2020... Startdate: 02/09/2025 Architecture: WINDOWS Score: 100 58 cbzr-98pq1.ydns.eu 2->58 62 Suricata IDS alerts for network traffic 2->62 64 Found malware configuration 2->64 66 Malicious sample detected (through community Yara rule) 2->66 68 19 other signatures 2->68 11 REF - 2514271 - PO_NO #20205 09739011AGK.pdf(84KB).com.exe 3 2->11         started        15 MS Host.exe 2 2->15         started        17 MS Host.exe 2->17         started        19 MS Host.exe 2 2->19         started        signatures3 process4 file5 56 REF - 2514271 - PO...f(84KB).com.exe.log, ASCII 11->56 dropped 78 Hides that the sample has been downloaded from the Internet (zone.identifier) 11->78 80 Injects a PE file into a foreign processes 11->80 21 REF - 2514271 - PO_NO #20205 09739011AGK.pdf(84KB).com.exe 5 5 11->21         started        24 MS Host.exe 15->24         started        28 MS Host.exe 17->28         started        30 MS Host.exe 17->30         started        32 MS Host.exe 17->32         started        34 MS Host.exe 19->34         started        signatures6 process7 dnsIp8 50 C:\Users\user\AppData\Roaming\...\MS Host.exe, PE32 21->50 dropped 52 C:\Users\user\...\MS Host.exe:Zone.Identifier, ASCII 21->52 dropped 54 C:\Users\user\AppData\Local\...\install.vbs, data 21->54 dropped 36 wscript.exe 1 21->36         started        60 cbzr-98pq1.ydns.eu 178.16.52.243, 2404, 49691 DUSNET-ASDE Germany 24->60 72 Installs a global keyboard hook 24->72 file9 signatures10 process11 signatures12 70 Windows Scripting host queries suspicious COM object (likely to drop second stage) 36->70 39 cmd.exe 1 36->39         started        process13 process14 41 MS Host.exe 3 39->41         started        44 conhost.exe 39->44         started        signatures15 74 Hides that the sample has been downloaded from the Internet (zone.identifier) 41->74 76 Injects a PE file into a foreign processes 41->76 46 MS Host.exe 41->46         started        48 MS Host.exe 41->48         started        process16
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f
Verdict:
inconclusive
YARA:
11 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/9dbeedd3ded509fd0b2058fe03cdce91
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f/
Threat name:
Win32.Backdoor.Remcos
Create hunting rule
Status:
Suspicious
First seen:
2025-09-01 14:51:32 UTC
File Type:
PE (.Net Exe)
Extracted files:
52
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jkps6zlzd2f5l5f2jswcjbcxpluo5met7ukdygu6tw4i3z5qtv7q._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
39614b9a1e5cce6b1e570d488c384a02b6240cfab2772f85fb31f6d82d466ee5
RemcosRAT
4b3b8c9037168a82409fbe027ecf77ba5b1b9262960b07dde8e15acfb1e3a5df
RemcosRAT
71deef76733c0d00e1d155a32d3a9306755745406beb9d1dcd46508bc7ed9841
RemcosRAT
79da3ea43027ba149ea557a9999d25b1df682d06606e68d39e62a86b01d41f4b
RemcosRAT
aa4ad373d2e9b58a03f4e5526bfec18522c49f75f0980d0fce33469d88506b3c
RemcosRAT
ae5c7c5f680e962071211f744fac2af5ad9a508ffe60f4bd747e885f017fbeae
RemcosRAT
error
RemcosRAT
fc5a104616191074e73ca74e64056c26e129b75395e57257eebf629772200d21
RemcosRAT
+ 4'012 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:darktortilla family:remcos botnet:c b r crypter discovery loader persistence rat
Link:
https://tria.ge/reports/250902-ghctps1xhy/
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Executes dropped EXE
Darktortilla
Darktortilla family
Detects Darktortilla crypter.
Remcos
Remcos family
Malware Config
C2 Extraction:
cbzr-98pq1.ydns.eu:2404
wqo9.firewall-gateway.de:4045
code1.ydns.eu:9302
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1ce1c8c5-ff10-41bc-8c94-ae607536c645
Unpacked files
SH256 hash:
b3e02d319db43642650fdfe96d8d3810c7b97184ffbf6c9c5debdf46074da11a
MD5 hash:
8eca23243d7823359fb90676bd94b4a1
SHA1 hash:
774559b747bbc15c07add310402c83611470d09f
Link:
https://www.unpac.me/results/8deffe4c-6d75-4e20-83d8-87500a07a81c/
SH256 hash:
415e0c65ed2c39e1d831cf8b07c07bde44bff073b72b05a8fe4a1141850e6947
MD5 hash:
48053311ab5e0d44d4f056dcc0799695
SHA1 hash:
7a27e76625f53e4a422c589a40ee5003bc36cb21
Detections:
win_remcos_w0
Create hunting rule
win_remcos_auto
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
win_remcos_rat_unpacked
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/8deffe4c-6d75-4e20-83d8-87500a07a81c/
Parent samples :
4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f
89be0060e88e37f5b5c3736fff092b5cd6e89eea26c6b4438e8932e7925a4837
1a721d6ad75d5a0f8f2599c661aaca62508771f4bba84e93f8401d39470c0432
64c2eb337d6f52f74f77b541d8a915a90ae5bd2cbda6a9497d7a2f026a64f152
SH256 hash:
da4cb91d96214c7134a9e8799fdf241bd6b8103eecd4efb1b8c228ca3c8e7e91
MD5 hash:
9a06e083cd0531927dcd616b9b601ffa
SHA1 hash:
9584f7e1c8ab7be5900762abcaedf20cb92e4ae7
Link:
https://www.unpac.me/results/8deffe4c-6d75-4e20-83d8-87500a07a81c/
SH256 hash:
2cb5b8fbcd0994c8371837858c1f6dfe8e0de017e86437c7aee38d710209f10a
MD5 hash:
4f5880d558000b383fbb6efb21100997
SHA1 hash:
d2ceb9140d797b0f4db46a0a02c274e4fe89f349
Link:
https://www.unpac.me/results/8deffe4c-6d75-4e20-83d8-87500a07a81c/
SH256 hash:
4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f
MD5 hash:
9dbeedd3ded509fd0b2058fe03cdce91
SHA1 hash:
c83e60eaf04e2fafcdf0960e83498dadafdd5d13
Link:
https://www.unpac.me/results/8deffe4c-6d75-4e20-83d8-87500a07a81c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/4a9f2f65791e/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/4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f

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: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

RemcosRAT

Executable exe 4a9f2f65791e8bd5f4ba4cac2484577ae8eeb093fd143c1a9e9db88de7b09d7f

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/24652/

Comments