MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50. 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 14 File information Comments
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SHA256 hash: 33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50
SHA3-384 hash: 3564572c0ce65212f465b9cc6ebd20c87cd41725270db4013f2a4e338952d48394bc1ff05c6152124309800b1e8b08b7
SHA1 hash: 535cdf86f5c064932fea71d169ba1c9e3acf4886
MD5 hash: a83c7c19a689b683942bf29ebcc82e07
humanhash: social-texas-magnesium-steak
File name:GST e-Payment.NET.CMS4006900371.exe
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:624'640 bytes
First seen:2024-05-16 09:03:37 UTC
Last seen:2024-05-16 09:36:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:y0pei36RatdHmBK2h+RrUm1jkHui7jkNAMo6WDNGn7cX0O2eEAmD:Vpp36stJqDwRrp6Z7P6uGn4kO2e
TLSH T196D40191B32B89B5CC4E47F109F64260057A2E8D54E5E50EB0D83B6B7373353A943AAF
TrID 69.7% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.0% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win32 Executable (generic) (4504/4/1)
1.9% (.EXE) Win16/32 Executable Delphi generic (2072/23)
File icon (PE):PE icon
dhash icon 68d8d8c8d9a9c1d9 (96 x SnakeKeylogger, 67 x RemcosRAT, 66 x Formbook)
Reporter NDA0E
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
324
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50.exe
Verdict:
Malicious activity
Analysis date:
2024-05-16 09:05:49 UTC
Tags:
rat remcos remote
Link:
https://app.any.run/tasks/e56916ab-5e41-445a-88a8-e808e8c643d3

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.9.16751.11030.UNOFFICIAL
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Setting a keyboard event handler
Creating a file in the %AppData% subdirectories
Connection attempt to an infection source
Sending a TCP request to an infection source
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade packed
Link:
https://www.filescan.io/uploads/6645cc0581ea6b1eef427472/reports/77492f46-d5a2-4c5a-9133-2c6f26363c02/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50
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.
Malware family:
REMCOS
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/705791ed-701b-4131-9006-b720960315b5
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1442513
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to capture and log keystrokes
Contains functionality to detect virtual machines (IN, VMware)
Contains functionality to inject code into remote processes
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
Detected Remcos RAT
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs a global keyboard hook
Loading BitLocker PowerShell Module
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: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Remcos
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1442513 Sample: GST e-Payment.NET.CMS400690... Startdate: 16/05/2024 Architecture: WINDOWS Score: 100 45 Multi AV Scanner detection for domain / URL 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 16 other signatures 2->51 7 SlFGRFDB.exe 5 2->7         started        10 GST e-Payment.NET.CMS4006900371.exe 7 2->10         started        process3 file4 53 Antivirus detection for dropped file 7->53 55 Multi AV Scanner detection for dropped file 7->55 57 Detected Remcos RAT 7->57 63 7 other signatures 7->63 13 SlFGRFDB.exe 7->13         started        16 schtasks.exe 1 7->16         started        18 SlFGRFDB.exe 7->18         started        39 C:\Users\user\AppData\Roaming\SlFGRFDB.exe, PE32 10->39 dropped 41 C:\Users\user\AppData\Local\...\tmpADC2.tmp, XML 10->41 dropped 59 Adds a directory exclusion to Windows Defender 10->59 61 Injects a PE file into a foreign processes 10->61 20 GST e-Payment.NET.CMS4006900371.exe 1 2 10->20         started        23 powershell.exe 23 10->23         started        25 powershell.exe 23 10->25         started        27 schtasks.exe 1 10->27         started        signatures5 process6 dnsIp7 65 Detected Remcos RAT 13->65 67 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 13->67 29 conhost.exe 16->29         started        43 62.102.148.166, 3319, 49707, 49719 TEKNIKBYRANSE Sweden 20->43 69 Installs a global keyboard hook 20->69 71 Loading BitLocker PowerShell Module 23->71 31 WmiPrvSE.exe 23->31         started        33 conhost.exe 23->33         started        35 conhost.exe 25->35         started        37 conhost.exe 27->37         started        signatures8 process9
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50/
Threat name:
Win32.Trojan.Znyonm
Create hunting rule
Status:
Malicious
First seen:
2024-05-16 03:38:43 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
22 of 38 (57.89%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gpgfl7xrdvur25zie5nr47p4mfjaz33bxmadlxt57ohgjdyin5ia._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:banksy execution rat
Link:
https://tria.ge/reports/240516-k1k5ksdc2z/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Remcos
Malware Config
C2 Extraction:
62.102.148.166:3319
Unpacked files
SH256 hash:
6f0d3fda63568fd941a128d9778030c9968a90716b501556e17afb718b9bd80e
MD5 hash:
69a24e4c48245f83ca9e5be025a37c49
SHA1 hash:
dd86fe31d423ede6d2ed1e5b1b27f963de2feb89
Link:
https://www.unpac.me/results/c896656b-302c-4623-a035-706a6a4d679c/
SH256 hash:
f540e8d603962027b3a1f8b86d035281bfbdd3a05a621ead255825bc2082632a
MD5 hash:
d172f59251b97b415b621d302e1be2b7
SHA1 hash:
b1534e603749c901b5ac185f20e281f6be7fa908
Link:
https://www.unpac.me/results/c896656b-302c-4623-a035-706a6a4d679c/
SH256 hash:
b76a896c8faf8ca28e4f0ecce91e7a622c3ea8999f27503ac9f46e09542c26f7
MD5 hash:
caad5e1ae920d351c2521be2dc5f22fc
SHA1 hash:
387312f70d7bd53a4ab5a779a38d125d731323cc
Detections:
Remcos
Create hunting rule
win_remcos_auto
Create hunting rule
win_remcos_g0
Create hunting rule
Remcos
Create hunting rule
malware_windows_remcos_rat
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Link:
https://www.unpac.me/results/c896656b-302c-4623-a035-706a6a4d679c/
Parent samples :
33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50
43281415b361da4215bb7a4a0a950b2c95c2d772f315d451088ffd53480de73f
7d7cf9b0a09e74a8a10b23b2265a31b41b0f017f18c965987ac47acebac15268
845c3ba76768948ab3df490599f02d060cd464c6251e16e7847d53707254ee46
b76a896c8faf8ca28e4f0ecce91e7a622c3ea8999f27503ac9f46e09542c26f7
253ae6027d114caeb26331508c9c916b54fe3561faf46679c06c48dad8860cac
d21d0451a7a8b112776118d88154bf7eab2703b13bf6ae1dcaec2f959bf42305
86329825eaf86f08f84bfc3ddd8870b5c05f47a43aba3695eea5ca4c7a0ee00b
SH256 hash:
27ddc96465ac70b602e730ca4b28018a2875f5aca4215f3d8608b9defc8bf23d
MD5 hash:
1b2614489be216f14010dea5dee50dc5
SHA1 hash:
046c2462662dc3adea1c79121b4d865665850e23
Link:
https://www.unpac.me/results/c896656b-302c-4623-a035-706a6a4d679c/
SH256 hash:
33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50
MD5 hash:
a83c7c19a689b683942bf29ebcc82e07
SHA1 hash:
535cdf86f5c064932fea71d169ba1c9e3acf4886
Link:
https://www.unpac.me/results/c896656b-302c-4623-a035-706a6a4d679c/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/33cc55fef11d/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/33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50

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:CMD_Ping_Localhost
Create hunting rule
Rule name:INDICATOR_SUSPICIOUS_EXE_UACBypass_EventViewer
Create hunting rule
Author:ditekSHen
Description:detects Windows exceutables potentially bypassing UAC using eventvwr.exe
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:malware_Remcos_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
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:Remcos
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Remcos in memory
Rule name:remcos_rat
Create hunting rule
Author:jeFF0Falltrades
Rule name:REMCOS_RAT_variants
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Windows_Generic_Threat_994f2330
Create hunting rule
Author:Elastic Security
Rule name:win_remcos_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.remcos.

File information

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

RemcosRAT

Executable exe 33cc55fef11d691d7728275b1e7dfc61520cef61bb0035de7dfb8e648f086f50

(this sample)

RemcosRAT

Executable exe 4ce01fbc21be01f22310224cf6651b1d3aeee5e4569be63d8e8c78e785fcf119

  
Dropping
SHA256 4ce01fbc21be01f22310224cf6651b1d3aeee5e4569be63d8e8c78e785fcf119
  
Dropping
MD5 69c95c878aa933bc20078fab85281fd5

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

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