MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34. 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: 15


Intelligence 15 IOCs YARA 11 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34
SHA3-384 hash: 5298872d85d2f44290e21d0d33bc13fb835daf4ac235683932eb250cd44cf3afcea0fb620d7e615297785bb9c963c5bf
SHA1 hash: d773f53ca94acfb3df5cfa7ae87b0632608072ff
MD5 hash: 081b5fb48eab820ccf47065e724cc9b6
humanhash: enemy-angel-potato-island
File name:mpclient.dll
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'529'728 bytes
First seen:2025-08-18 15:49:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3dccd54933aa26419bc7340cce758582 (1 x RemcosRAT, 1 x AgentTesla, 1 x MassLogger)
ssdeep 49152:5v4YVhrLb3o0glJZinoCzXCwNBBBXz+TyXRvoy31G9hsP4RkHM6/Mo+yYW2AkfVK:frCUn3Nz+7ylk
TLSH T1F3F5BE15E3E900A8D56BEB38CA658333D6B0B8965730D54F065CE6492F33E909B3F726
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter threatcat_ch
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
0c7b47c7e7c9b0904d329e43c32dc1f333b2e0caffd5c92d746ac44b743443ec.zip
Verdict:
Suspicious activity
Analysis date:
2025-08-18 00:34:46 UTC
Tags:
arch-exec
Link:
https://app.any.run/tasks/6e999df1-61f8-4843-a89b-d27296d3aeb4

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/21977/
Detection(s):
SecuriteInfo.com.Win32.Backdoor.Remcos.J3IOTH.13976.10431.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68a275268fd55a79c528a162
Tags:
emotet remcos
Result
Verdict:
Clean
Maliciousness:
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
adaptive-context crypto fingerprint masquerade microsoft_visual_cc packed remcos
Link:
https://www.filescan.io/uploads/68a34b94a4bdac9f5b9c464b/reports/343fcd20-c017-48dc-a826-de12bf11fb68/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/ead7f86a-04d0-4cd4-8e74-a52be76335be
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1759448
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Drops PE files with a suspicious file extension
Drops PE files with benign system names
Found malware configuration
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sample is not signed and drops a device driver
Sigma detected: Creation of an WerFault.exe in Unusual Folder
Sigma detected: Drops fake bootloader file
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Potential PowerShell Execution Via DLL
Sigma detected: Windows Binaries Write Suspicious Extensions
Suricata IDS alerts for network traffic
Writes to foreign memory regions
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1759448 Sample: mpclient.dll.exe Startdate: 18/08/2025 Architecture: WINDOWS Score: 100 50 212.162.149.164 UNREAL-SERVERSUS Netherlands 2->50 52 Suricata IDS alerts for network traffic 2->52 54 Found malware configuration 2->54 56 Malicious sample detected (through community Yara rule) 2->56 58 8 other signatures 2->58 8 loaddll64.exe 1 2->8         started        signatures3 process4 process5 10 rundll32.exe 872 8->10         started        14 cmd.exe 1 8->14         started        16 rundll32.exe 563 8->16         started        18 30 other processes 8->18 file6 32 C:\Users\user\...\wer.dll, PE32+ 10->32 dropped 44 775 other files (2 malicious) 10->44 dropped 66 Drops PE files with a suspicious file extension 10->66 68 Writes to foreign memory regions 10->68 70 Allocates memory in foreign processes 10->70 72 Drops PE files with benign system names 10->72 20 rundll32.exe 850 14->20         started        34 C:\Users\user\...\format.com, PE32+ 16->34 dropped 36 C:\Users\user\...\dwm.exe, PE32+ 16->36 dropped 46 534 other files (1 malicious) 16->46 dropped 74 Injects a PE file into a foreign processes 16->74 38 C:\Users\user\...\winload.efi, PE32+ 18->38 dropped 40 C:\Users\user\...\wininit.exe, PE32+ 18->40 dropped 42 C:\Users\user\...\win32kns.sys, PE32+ 18->42 dropped 48 1599 other files (9 malicious) 18->48 dropped 76 Sample is not signed and drops a device driver 18->76 signatures7 process8 file9 24 C:\Users\user\...\more.com, PE32+ 20->24 dropped 26 C:\Users\user\...\csrss.exe, PE32+ 20->26 dropped 28 C:\Users\user\...\chcp.com, PE32+ 20->28 dropped 30 749 other files (2 malicious) 20->30 dropped 60 Writes to foreign memory regions 20->60 62 Allocates memory in foreign processes 20->62 64 Injects a PE file into a foreign processes 20->64 signatures10
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Link:
https://app.malva.re/file/081b5fb48eab820ccf47065e724cc9b6
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34
Threat name:
Win64.Backdoor.Remcos
Create hunting rule
Status:
Malicious
First seen:
2025-08-17 16:33:47 UTC
File Type:
PE+ (Dll)
AV detection:
11 of 24 (45.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wuat55ebnifkb6bpdlygebgftnwlpjer2rbdh6m3evc42et5bi2a._file
Verdict:
malicious
Label(s):
remcos
Create hunting rule
Similar samples:
error
RemcosRAT
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery persistence rat
Link:
https://tria.ge/reports/250818-s9nwtsak7y/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
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
Executes dropped EXE
Loads dropped DLL
Remcos
Remcos family
Malware Config
C2 Extraction:
212.162.149.164:443
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/0dab8fd8-5009-43d0-ba59-4abec878038b
Unpacked files
SH256 hash:
b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34
MD5 hash:
081b5fb48eab820ccf47065e724cc9b6
SHA1 hash:
d773f53ca94acfb3df5cfa7ae87b0632608072ff
Link:
https://www.unpac.me/results/2130e8a9-b648-49ef-963b-762b4aae7187/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b5013ef4816a/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/b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
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)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

Malspam

RemcosRAT

Executable exe b5013ef4816a0aa0f82f1af06204c59b6cb7a491d44233f99b2545cd127d0a34

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/21977/

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