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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3. 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: 17


Intelligence 17 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3
SHA3-384 hash: 1e5aeca42bdace0f1d23f3089daf274fcb290c108a483c529ed864cd03e67bf217040e725aea5701c1e297adf2d35146
SHA1 hash: 5cb9604b95eb6de1800c9dc34d39b55389ea2050
MD5 hash: ac0cffd05fb3d019fcfef51febc3e29b
humanhash: california-missouri-quebec-montana
File name:Outgoings.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:613'319 bytes
First seen:2026-04-19 16:20:13 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 46ce5c12b293febbeb513b196aa7f843 (47 x GuLoader, 21 x RemcosRAT, 15 x AgentTesla)
ssdeep 12288:mX4OKQAFtsZVG354ftSNTb99upc+z+6NZY:44OksgSqn99up6I2
Threatray 2'413 similar samples on MalwareBazaar
TLSH T1EDD4F1D3F92090D0D821D7B4CCBAE9F6137B7E29A990692A23DCBE1F3C31161455B94B
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 f0e0b233ccccccf0 (3 x RemcosRAT, 2 x GuLoader)
Reporter threatcat_ch
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
1
# of downloads :
179
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/b78f7165-a5ed-42c2-8cb8-b7684a95cb10/
Malware family:
remcos
Create hunting rule
ID:
1
File name:
exe
Verdict:
Malicious activity
Analysis date:
2026-04-19 16:21:21 UTC
Tags:
auto-reg remcos rat
Link:
https://app.any.run/tasks/e6dffe46-0530-44f3-be11-a459e36fda12

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/62260/
Verdict:
Malicious
Score:
81.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=69e500e6f68adfe1003b69b6
Tags:
injection blic
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Gathering data
Verdict:
Suspicious
Labled as:
Malware_
Link:
https://www.hybrid-analysis.com/sample/815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3
Verdict:
Malicious
File Type:
exe x32
First seen:
2026-04-19T12:29:00Z UTC
Last seen:
2026-04-21T13:58:00Z UTC
Hits:
~1000
Detections:
VHO:Trojan-Downloader.Win32.Minix.gen Trojan.Win32.GuLoader.sb PDM:Trojan.Win32.Generic Trojan.NSIS.Makoob.sbd Trojan.NSIS.Makoob.sba Trojan.NSIS.Makoob.su Trojan-Dropper.Win32.Injector.sb Trojan-Downloader.Win32.Minix.sb Backdoor.Win32.Remcos.sb
Link:
https://opentip.kaspersky.com/815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3/results?tab=lookup
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5f0c96ed-4d0a-4004-a814-e64d63aa2c1e
Result
Threat name:
GuLoader, Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1900755
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 malware configuration
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Unusual module load detection (module proxying)
Yara detected GuLoader
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1900755 Sample: Outgoings.exe Startdate: 19/04/2026 Architecture: WINDOWS Score: 100 65 drive.usercontent.google.com 2->65 67 drive.google.com 2->67 75 Found malware configuration 2->75 77 Antivirus / Scanner detection for submitted sample 2->77 79 Multi AV Scanner detection for submitted file 2->79 81 5 other signatures 2->81 10 Outgoings.exe 8 46 2->10         started        14 remcos.exe 36 2->14         started        16 remcos.exe 2->16         started        18 rundll32.exe 2->18         started        signatures3 process4 file5 59 C:\Users\user\AppData\Local\...\System.dll, PE32 10->59 dropped 95 Tries to detect virtualization through RDTSC time measurements 10->95 97 Unusual module load detection (module proxying) 10->97 99 Switches to a custom stack to bypass stack traces 10->99 20 Outgoings.exe 2 10 10->20         started        25 Outgoings.exe 10->25         started        61 C:\Users\user\AppData\Local\...\System.dll, PE32 14->61 dropped 27 remcos.exe 14->27         started        29 remcos.exe 14->29         started        63 C:\Users\user\AppData\Local\...\System.dll, PE32 16->63 dropped 31 remcos.exe 16->31         started        33 remcos.exe 16->33         started        signatures6 process7 dnsIp8 69 drive.usercontent.google.com 142.250.68.193, 443, 49774, 49776 GOOGLEUS United States 20->69 71 drive.google.com 142.251.210.46, 443, 49773, 49775 GOOGLEUS United States 20->71 55 C:\ProgramData\Remcos\remcos.exe, PE32 20->55 dropped 57 C:\ProgramData\...\remcos.exe:Zone.Identifier, ASCII 20->57 dropped 91 Detected Remcos RAT 20->91 93 Creates autostart registry keys with suspicious names 20->93 35 remcos.exe 36 20->35         started        39 Outgoings.exe 20->39         started        41 remcos.exe 27->41         started        43 remcos.exe 31->43         started        file9 signatures10 process11 file12 53 C:\Users\user\AppData\Local\...\System.dll, PE32 35->53 dropped 83 Antivirus detection for dropped file 35->83 85 Multi AV Scanner detection for dropped file 35->85 87 Tries to detect virtualization through RDTSC time measurements 35->87 89 2 other signatures 35->89 45 remcos.exe 4 7 35->45         started        49 remcos.exe 35->49         started        signatures13 process14 dnsIp15 73 130.12.181.39, 2404, 49777, 49778 DATAHOPDatahop-SixDegreesGB Canada 45->73 101 Detected Remcos RAT 45->101 51 remcos.exe 45->51         started        signatures16 process17
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3
Gathering data
Detection:
remcos
Create hunting rule
Link:
https://mwdb.cert.pl/sample/815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3
Threat name:
Win32.Malware.Heuristic
Create hunting rule
Status:
Malicious
First seen:
2026-04-19 16:01:24 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
13 of 24 (54.17%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qfoii25zjebn5mkzvkwdgh7avqgncsdukidwmz33w7evgahi57bq._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
038da33f8a4482e112b68cd8eb315e10e8a0117a0194b881669c40a41ae0cbc5
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07ac845eee39222cc487d6dfe0a50f12874af6b05ea0390b5d6e4e4e64d3e18c
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5b9f81f49d46c692df2aef1af5c708324551d0ae5b6103148ccd8afb761c17d5
GuLoader
70739509527d295d9c35471acb163d7769b08a3b4933cda1f3c7ae599727b4df
GuLoader
73763f1e185e783f42d48007efb4ea67d05196a461971129e78d3cb3f4c8f6c4
GuLoader
7b2b89b5c92d6436888e918e397eaf479429c9c29eb864adb2f3b56e7ef0676d
GuLoader
8e918dc30ae62e349340f07b703627d829553dbf4f641b13da548e1e179a3463
GuLoader
bbf8661385fb7921e79eeedc96638845cc489f296652da655a9a0079680dcffe
GuLoader
bdcbaac3992e430d7db16978bc9b7ae1a4b6da4a04d471054367ff7ca4e1c37b
GuLoader
ec47f3160aeb30ca660e18a30ca62c9e91806f4337404697308070260668879d
GuLoader
error
GuLoader
+ 2'403 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos botnet:remotehost discovery persistence rat
Link:
https://tria.ge/reports/260419-ttgy1sby3s/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
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
Family: Remcos
Malware Config
C2 Extraction:
130.12.181.39:2404
Unpacked files
SH256 hash:
815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3
MD5 hash:
ac0cffd05fb3d019fcfef51febc3e29b
SHA1 hash:
5cb9604b95eb6de1800c9dc34d39b55389ea2050
Link:
https://www.unpac.me/results/41f5721d-8710-4139-bcda-f7fff356dd13/
SH256 hash:
8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
MD5 hash:
9b38a1b07a0ebc5c7e59e63346ecc2db
SHA1 hash:
97332a2ffcf12a3e3f27e7c05213b5d7faa13735
Link:
https://www.unpac.me/results/41f5721d-8710-4139-bcda-f7fff356dd13/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/815c846bb949/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/815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3

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: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 815c846bb94902deb159aaac331fe0ac0cd14874520766677bb7c95300e8efc3

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/62260/

Comments