MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 da61841e7d57845bdbe2c29820b26e7ecefb0895e4aabfb08d97533d1c0d80fd. 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
njrat
Vendor detections: 16
| SHA256 hash: | da61841e7d57845bdbe2c29820b26e7ecefb0895e4aabfb08d97533d1c0d80fd |
|---|---|
| SHA3-384 hash: | fd48f150d9d9bec19f4291df026f19b466ec7d3f908a76f92613a7fb81c431ad899cc90fb859c379ef636817aceffbd2 |
| SHA1 hash: | 0f0b7c322b669e38c23f2104ee76fd0cf157c6e4 |
| MD5 hash: | 18a7a27e7a22a80edb57e30b811305ac |
| humanhash: | steak-triple-utah-blue |
| File name: | da61841e7d57845bdbe2c29820b26e7ecefb0895e4aabfb08d97533d1c0d80fd |
| Download: | download sample |
| Signature | njrat |
| File size: | 520'104 bytes |
| First seen: | 2025-12-08 15:50:50 UTC |
| Last seen: | 2026-01-09 15:09:36 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 0293eec0b5432ad092f24065016203b2 (22 x GuLoader, 18 x RemcosRAT, 6 x Formbook) |
| ssdeep | 12288:DJaoFA8t/xOLxIDPLvBiV8UWtkOQ/RvGiTOUsAh:DJtRt/xOLxGP1rUykl/dzSUL |
| Threatray | 2'349 similar samples on MalwareBazaar |
| TLSH | T150B42374B5E1C56BC67AC2B034F06A07AFC518694490C35B67643BEE78996C2EC2D3C7 |
| 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 | 30bc8ce4b48046c2 (6 x njrat) |
| Reporter |  adrian__luca |
| Tags: | exe NjRAT signed |
Code Signing Certificate
| Organisation: | Rentegneren |
|---|---|
| Issuer: | Rentegneren |
| Algorithm: | sha256WithRSAEncryption |
| Valid from: | 2025-11-18T07:37:52Z |
| Valid to: | 2026-11-18T07:37:52Z |
| Serial number: | 27a1ed5bf201153d2e428081fbbbdd5a628bd9c5 |
| Thumbprint Algorithm: | SHA256 |
| Thumbprint: | e26d4b044daf5282901bdd903bb02c02fc0a19224dae23fcbf56dd6fe3e1ac69 |
| Source: | This information was brought to you by ReversingLabs A1000 Malware Analysis Platform |
Intelligence
File Origin
# of uploads :
2
# of downloads :
147
Origin country :
HUVendor Threat Intelligence
Malware configuration found for:
NSIS
Details
Malware family:
remcos
ID:
1
File name:
_da61841e7d57845bdbe2c29820b26e7ecefb0895e4aabfb08d97533d1c0d80fd.exe
Verdict:
Malicious activity
Analysis date:
2025-12-08 16:09:53 UTC
Tags:
auto-reg remcos rat
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Verdict:
Malicious
Score:
99.9%
Tags:
uloader virus nsis blic
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file
Delayed reading of the file
Unauthorized injection to a recently created process
Restart of the analyzed sample
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
adaptive-context anti-debug blackhole guloader installer installer installer-heuristic microsoft_visual_cc nsis overlay signed
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-11-25T18:11:00Z UTC
Last seen:
2025-12-10T08:49:00Z UTC
Hits:
~10000
Detections:
HEUR:Trojan.NSIS.GuLoader.gen HEUR:Trojan.Win32.Makoob.gen Trojan.Win32.GuLoader.sb Trojan-Downloader.Win32.Minix.sb Trojan.NSIS.Makoob.sbb Trojan.NSIS.Makoob.sba HEUR:Trojan.NSIS.Makoob.gen HEUR:Backdoor.Win32.Remcos.gen
Gathering data
Score:
93%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Verdict:
Malicious
Threat:
Family.REMCOS
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2025-11-25 23:45:43 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
22 of 38 (57.89%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Label(s):
cloudeye
Similar samples:
+ 2'339 additional samples on MalwareBazaar
Result
Malware family:
remcos
Score:
10/10
Tags:
family:remcos botnet:remotehost discovery installer persistence rat
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
NSIS installer
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Remcos
Remcos family
Malware Config
C2 Extraction:
107.173.227.99:2404
Verdict:
Suspicious
Tags:
loader guloader
YARA:
NSIS_GuLoader_July_2024
Unpacked files
SH256 hash:
da61841e7d57845bdbe2c29820b26e7ecefb0895e4aabfb08d97533d1c0d80fd
MD5 hash:
18a7a27e7a22a80edb57e30b811305ac
SHA1 hash:
0f0b7c322b669e38c23f2104ee76fd0cf157c6e4
SH256 hash:
014f1dfeb842cf7265a3644bc6903c592abe9049bfc7396829172d3d72c4d042
MD5 hash:
12b140583e3273ee1f65016becea58c4
SHA1 hash:
92df24d11797fefd2e1f8d29be9dfd67c56c1ada
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.52
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: | Ins_NSIS_Buer_Nov_2020_1 |
|---|---|
| Author: | Arkbird_SOLG |
| Description: | Detect NSIS installer used for Buer loader |
| Rule name: | PE_Digital_Certificate |
|---|---|
| Author: | albertzsigovits |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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