MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1
SHA3-384 hash: 32c72311d51890c192e4e62dcc7198ab5744b2ed0f6568ba0ed0b91b0c009f548a6fd8c6ffaee1b2e9b8f8c45e68cdb9
SHA1 hash: d82b58fe0878c920b9f7a45230bd6b5c269f5f91
MD5 hash: af76642b39a14bbca8e5801ecf8a614f
humanhash: romeo-alabama-mexico-triple
File name:SecuriteInfo.com.Gen.Variant.Nemesis.44448.12264.24043
Download: download sample
Signature RemcosRAT
Create hunting rule
File size:3'225'328 bytes
First seen:2025-07-19 13:17:47 UTC
Last seen:2025-07-19 14:18:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 9dda1a1d1f8a1d13ae0297b47046b26e (64 x Formbook, 39 x GuLoader, 22 x RemcosRAT)
ssdeep 98304:WZXJ1iyntHLBA+sxNfU29jWa12IC/cjB/Fu:Wp196+s/U2As2IC/mFu
TLSH T1A2E533E9F9A0434EE765A7F49DD3BB036C705A0245299792B0B2153C2B0915F8F3A7F8
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon 34f0c4c4c4c4c0d4 (1 x AveMariaRAT, 1 x RemcosRAT)
Reporter SecuriteInfoCom
Tags:exe RemcosRAT

Intelligence

File Origin
# of uploads :
2
# of downloads :
46
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1.bin.exe
Verdict:
Malicious activity
Analysis date:
2025-07-19 13:03:35 UTC
Tags:
rat remcos golang
Link:
https://app.any.run/tasks/556992f5-efd2-4c03-90eb-a7cbe482176f

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/15793/
Detection(s):
SecuriteInfo.com.Gen.Variant.Nemesis.44448.12264.24043.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=687b9b2784b37dd61eef94cf
Tags:
cobalt nemty
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Restart of the analyzed sample
Launching a process
Creating a file
Loading a suspicious library
Сreating synchronization primitives
Using the Windows Management Instrumentation requests
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Launching a service
Reading critical registry keys
Forced shutdown of a system process
Stealing user critical data
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
installer invalid-signature masquerade microsoft_visual_cc obfuscated obfuscated overlay signed
Link:
https://www.filescan.io/uploads/687b9b208a7d628a81b79c1a/reports/f7dda98e-7fd8-4811-9d64-ad4adb261981/overview
Verdict:
Suspicious
Labled as:
Malware_43.0
Link:
https://www.hybrid-analysis.com/sample/b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/39b7c795-daea-4f7b-8da0-274ac70588e4
Score:
52%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) Win 32 Exe x86
Link:
https://app.malva.re/file/af76642b39a14bbca8e5801ecf8a614f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1/
Verdict:
Malicious
Threat:
Win32.Malware.Heuristic
Link:
https://tip.neiki.dev/file/b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1
Threat name:
Win32.Trojan.Egairtigado
Create hunting rule
Status:
Malicious
First seen:
2025-07-19 13:03:37 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
16 of 23 (69.57%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=wunn646mhhojmpqjyrf5lcaa4q6lzkpku2e7jedwwillmixj56qq._file
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos collection defense_evasion discovery execution rat trojan
Link:
https://tria.ge/reports/250719-qj5esafl91/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Command and Scripting Interpreter: PowerShell
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
UAC bypass
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/debb8837-0325-48b5-8cab-4435a0960e0c
Unpacked files
SH256 hash:
b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1
MD5 hash:
af76642b39a14bbca8e5801ecf8a614f
SHA1 hash:
d82b58fe0878c920b9f7a45230bd6b5c269f5f91
Link:
https://www.unpac.me/results/ff46f379-9ac6-427f-a203-573c82fa4c54/
SH256 hash:
fb87a461ef1a26febc4ee9f0a7ea133ee58a6dd980eeaf26105264e3ac760960
MD5 hash:
91be75a7395a868dda21b4bd23c0a827
SHA1 hash:
996ebe1103024980607df185eb3fa40d882d50db
Link:
https://www.unpac.me/results/ff46f379-9ac6-427f-a203-573c82fa4c54/
SH256 hash:
23d618a0293c78ce00f7c6e6dd8b8923621da7dd1f63a070163ef4c0ec3033d6
MD5 hash:
192639861e3dc2dc5c08bb8f8c7260d5
SHA1 hash:
58d30e460609e22fa0098bc27d928b689ef9af78
Link:
https://www.unpac.me/results/ff46f379-9ac6-427f-a203-573c82fa4c54/
SH256 hash:
89a82c4849c21dfe765052681e1fad02d2d7b13c8b5075880c52423dca72a912
MD5 hash:
b7d61f3f56abf7b7ff0d4e7da3ad783d
SHA1 hash:
15ab5219c0e77fd9652bc62ff390b8e6846c8e3e
Link:
https://www.unpac.me/results/ff46f379-9ac6-427f-a203-573c82fa4c54/
SH256 hash:
bff1a335a5caa0587b7f4894e925e7dbfdd1b5719aa13cb518a2d05623c4727e
MD5 hash:
8cd996f2f88d3a68854a5ad9e7b75d5e
SHA1 hash:
36c4c7df0e62982c70c6f16077391dc0786c500b
Link:
https://www.unpac.me/results/ff46f379-9ac6-427f-a203-573c82fa4c54/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.07
Link:
https://yomi.yoroi.company/submissions/b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1

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:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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.

Web download

RemcosRAT

Executable exe b51adf73cc39dc963e09c44bd58800e43cbca9eaa689f49076b216b622e9efa1

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/3585915/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/15793/

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
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

Comments