🤲🏼 NEW | abuse.ch Community Hub! Earn recognition 🏅 for the malware intelligence you share, climb the leaderboards 📈, and connect with like-minded contributors who share your hunting focus 🤝. Ready to unlock your profile? Go to the Community Hub →

MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c. 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


GuLoader


Vendor detections: 16


Intelligence 16 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c
SHA3-384 hash: b439fc2ca58090ab9b34071f9e187d0126ea775995af76d04d1d8d72f4e2b78723bad1c5e70f5ada57a4f3727af673a6
SHA1 hash: 293d42eb87b9f71cef073e1f88a0030ba6b2d5aa
MD5 hash: 34d72fc49349b9bfe03f2504b84bbb56
humanhash: nineteen-louisiana-hotel-lactose
File name:Coessential.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:389'224 bytes
First seen:2026-04-10 02:42:31 UTC
Last seen:2026-04-13 07:45:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 56a78d55f3f7af51443e58e0ce2fb5f6 (739 x GuLoader, 453 x Formbook, 295 x Loki)
ssdeep 6144:BbE/HUe3Y0VKlgggggggggoFJs7oz9GeKlz7QO6KVNqZLi6M3lEMANpW2N+2uE3w:BbcVKlgggggggggoFJs0afzPqZGzlUsx
Threatray 2'476 similar samples on MalwareBazaar
TLSH T1AE8412B435B0E551E8A10232E425EE3E1FB89D5ED4795E8B130CBFBDBAF1683A41D102
TrID 50.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
10.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
10.5% (.EXE) Win64 Executable (generic) (6522/11/2)
8.1% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.2% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
dhash icon debe29558aa2aa00 (2 x RemcosRAT, 2 x GuLoader)
Reporter threatcat_ch
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Blufferen
Issuer:Blufferen
Algorithm:sha256WithRSAEncryption
Valid from:2026-03-07T09:53:45Z
Valid to:2027-03-07T09:53:45Z
Serial number: 4638cab7205b2a1cccb6f2f8c796216ab44e55c1
Thumbprint Algorithm:SHA256
Thumbprint: 8bb855c2b066242a2af4cd8feb659167b5cf454e0f58592ccadabaa70b84505d
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
190
Origin country :
CH CH
Vendor Threat Intelligence
Malware configuration found for:
GuLoader NSIS
Details
GuLoader
an XOR decryption key and an extracted component
GuLoader
a c2 URL, a useragent string, and a string XOR key
NSIS
extracted archive contents
Link:
https://research.acce.ciphertechsolutions.com/results/2a42332a-7b14-4f52-81a9-0a6099f66c5a/
Malware family:
remcos
Create hunting rule
ID:
1
File name:
Coessential.exe
Verdict:
Malicious activity
Analysis date:
2026-04-10 02:45:38 UTC
Tags:
remcos rat auto-reg remote stealer
Link:
https://app.any.run/tasks/cb01e421-5be9-4b01-8bad-ebab275b8d12

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/61014/
Detection(s):
SecuriteInfo.com.Trojan.Inject6.18267.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69d863d36a61012f6ad083cf
Tags:
injection obfusc blic
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file in the Windows subdirectories
Creating a file in the %temp% directory
Delayed reading of the file
Creating a file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Unknown
Threat level:
  2.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug installer installer installer-heuristic microsoft_visual_cc nsis signed soft-404
Link:
https://www.filescan.io/uploads/69d863cf5ea31bc68a1caf73/reports/0e9ac457-3c0a-478c-9003-c356819596eb/overview
Verdict:
Suspicious
Labled as:
Injector.CFHS
Link:
https://www.hybrid-analysis.com/sample/3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-09T22:50:00Z UTC
Last seen:
2026-04-12T00:34:00Z UTC
Hits:
~10000
Detections:
Trojan.Win32.GuLoader.sb HEUR:Trojan-Downloader.Win32.Minix.gen Trojan.NSIS.Makoob.sba Trojan-Downloader.Win32.Minix.sb
Link:
https://opentip.kaspersky.com/3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/fa61fdf8-f1b1-4470-a37c-00d13779fbc7
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1896302
Signature
AI detected suspicious PE digital signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Creates autostart registry keys with suspicious names
Detected Remcos RAT
Found direct / indirect Syscall (likely to bypass EDR)
Found hidden mapped module (file has been removed from disk)
Found malware configuration
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Unusual module load detection (module proxying)
Writes to foreign memory regions
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1896302 Sample: Coessential.exe Startdate: 10/04/2026 Architecture: WINDOWS Score: 100 69 drive.usercontent.google.com 2->69 71 drive.google.com 2->71 87 Suricata IDS alerts for network traffic 2->87 89 Found malware configuration 2->89 91 Antivirus detection for dropped file 2->91 93 8 other signatures 2->93 10 Coessential.exe 1 48 2->10         started        14 remcos.exe 34 2->14         started        16 remcos.exe 13 2->16         started        18 remcos.exe 2->18         started        signatures3 process4 file5 63 C:\Users\user\AppData\Local\...\System.dll, PE32 10->63 dropped 107 Tries to detect virtualization through RDTSC time measurements 10->107 109 Unusual module load detection (module proxying) 10->109 111 Switches to a custom stack to bypass stack traces 10->111 20 Coessential.exe 2 10 10->20         started        25 Coessential.exe 10->25         started        65 C:\Users\user\AppData\Local\...\System.dll, PE32 14->65 dropped 113 Found direct / indirect Syscall (likely to bypass EDR) 14->113 27 remcos.exe 14->27         started        29 remcos.exe 14->29         started        signatures6 process7 dnsIp8 73 drive.usercontent.google.com 142.251.210.129, 443, 49725, 49730 GOOGLEUS United States 20->73 75 drive.google.com 142.251.215.78, 443, 49723, 49729 GOOGLEUS United States 20->75 53 C:\ProgramData\Remcos\remcos.exe, PE32 20->53 dropped 55 C:\ProgramData\...\remcos.exe:Zone.Identifier, ASCII 20->55 dropped 95 Detected Remcos RAT 20->95 97 Creates autostart registry keys with suspicious names 20->97 31 remcos.exe 34 20->31         started        35 Coessential.exe 20->35         started        file9 signatures10 process11 file12 67 C:\Users\user\AppData\Local\...\System.dll, PE32 31->67 dropped 79 Antivirus detection for dropped file 31->79 81 Multi AV Scanner detection for dropped file 31->81 83 Found hidden mapped module (file has been removed from disk) 31->83 85 4 other signatures 31->85 37 remcos.exe 4 10 31->37         started        42 remcos.exe 31->42         started        signatures13 process14 dnsIp15 77 192.227.135.226, 2404, 49731, 49732 AS-COLOCROSSINGUS United States 37->77 57 C:\Users\user\AppData\Local\Temp\THFEED.tmp, MS-DOS 37->57 dropped 59 C:\Users\user\AppData\Local\Temp\THFE6F.tmp, MS-DOS 37->59 dropped 61 C:\Users\user\AppData\Local\Temp\THFDE1.tmp, MS-DOS 37->61 dropped 99 Detected Remcos RAT 37->99 101 Writes to foreign memory regions 37->101 103 Maps a DLL or memory area into another process 37->103 105 Found direct / indirect Syscall (likely to bypass EDR) 37->105 44 userinit.exe 37->44         started        47 userinit.exe 37->47         started        49 userinit.exe 37->49         started        51 2 other processes 37->51 file16 signatures17 process18 signatures19 115 Tries to harvest and steal browser information (history, passwords, etc) 44->115 117 Unusual module load detection (module proxying) 44->117 119 Tries to steal Instant Messenger accounts or passwords 47->119 121 Tries to steal Mail credentials (via file / registry access) 47->121
Score:
88%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c
Gathering data
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2026-04-10 01:42:30 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
20 of 38 (52.63%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hyj4blhj6ae422jmzptn3y7427yo7razv6heb7fuplz7thjwa4oa._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
2ea5354ac4ea3fa0bd4a3c6fd19496197b5dffe122c29181884878c3603f0828
GuLoader
2efece12a2ddc0c550ad7606a0a965582e5bb2ac88bf01fab84ecd45c0c77d91
GuLoader
33f55a35584f739d24727f680432150932aa0dd7695abfa105a207c57703cc24
GuLoader
63b6d47b50a25d37ba2735981e95252d33862c1ae14c6f6a0128b14711dee466
GuLoader
cf13be9554f3be56b969a765990a91842d5d002bb36b541a990dc126becccae8
GuLoader
error
GuLoader
f6f4ebaad107ea8d7ca36820f2ce6dd40b40e004b70c7656ce0ebfe66200fca3
GuLoader
faa2846a9b557f84fcbc338bed4e7b3b748994150d3bee39abf4724d5af085ec
GuLoader
+ 2'466 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection discovery persistence rat
Link:
https://tria.ge/reports/260410-c7t23afv9y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Contacts third-party web service commonly abused for C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
Remcos
Remcos family
Malware Config
C2 Extraction:
192.227.135.226:2404
Unpacked files
SH256 hash:
3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c
MD5 hash:
34d72fc49349b9bfe03f2504b84bbb56
SHA1 hash:
293d42eb87b9f71cef073e1f88a0030ba6b2d5aa
Link:
https://www.unpac.me/results/0674417a-fbea-452b-91e3-fde57a77f09d/
SH256 hash:
8dc562cda7217a3a52db898243de3e2ed68b80e62ddcb8619545ed0b4e7f65a8
MD5 hash:
cff85c549d536f651d4fb8387f1976f2
SHA1 hash:
d41ce3a5ff609df9cf5c7e207d3b59bf8a48530e
Link:
https://www.unpac.me/results/0674417a-fbea-452b-91e3-fde57a77f09d/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3e13c0ace9f0/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/3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c

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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:VECT_Ransomware
Create hunting rule
Author:Mustafa Bakhit
Description:Detects activity associated with VECT ransomware. This includes registry modifications and deletions, execution of system and defense-evasion commands, suspicious API usage, mutex creation, file and memory manipulation, ransomware note generation, anti-debugging and anti-analysis techniques, and embedded cryptographic constants (SHA256) characteristic of this malware family. Designed for threat intelligence and malware detection environments.

File information

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

Malspam

GuLoader

Executable exe 3e13c0ace9f009cd692ccbe6dde3fcd7f0efc419af8e40fcb47af3f99d36071c

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/61014/

Comments