MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a7c4b700d55ace0c0b6e2005a507aa4cec3e76e23e33a5a22cd3e004cc18f652. 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: 17
| SHA256 hash: | a7c4b700d55ace0c0b6e2005a507aa4cec3e76e23e33a5a22cd3e004cc18f652 |
|---|---|
| SHA3-384 hash: | a0381f28e121e078d7339f657983aee7984cdf262d5ba368ae9f6596612fc0bfd2e3581007c8dab1dde15e8315708e54 |
| SHA1 hash: | 84db9d16ca17a711b3f3082e587fa044d51df7aa |
| MD5 hash: | 245529be4a57db9b78699e97ae630cd2 |
| humanhash: | network-alpha-four-johnny |
| File name: | file |
| Download: | download sample |
| Signature | njrat |
| File size: | 7'929'344 bytes |
| First seen: | 2025-12-19 12:33:23 UTC |
| Last seen: | 2025-12-19 12:36:30 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 25a0d623c5baf84bae4d5ec6f243e150 (1 x PythonStealer, 1 x njrat, 1 x AsyncRAT) |
| ssdeep | 196608:AR6RKzxCPTX1o31udVmBDiHDN9ytjwhrKS/LbFru91n:0zxSqIP6uHDTyWhL/LbFr61 |
| Threatray | 43 similar samples on MalwareBazaar |
| TLSH | T10C863328C217C168F70B24FCF6363AB687C66CB03752D1E71966D36B1A376D06D3258A |
| TrID | 44.4% (.EXE) Win64 Executable (generic) (10522/11/4) 21.3% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.ICL) Windows Icons Library (generic) (2059/9) 8.5% (.EXE) OS/2 Executable (generic) (2029/13) 8.4% (.EXE) Generic Win/DOS Executable (2002/3) |
| Magika | pebin |
| Reporter |  Bitsight |
| Tags: | dropped-by-amadey exe fbf543 NjRAT |
Intelligence
File Origin
# of uploads :
3
# of downloads :
164
Origin country :
USVendor Threat Intelligence
Malware configuration found for:
Nuitka
Details
Malware family:
n/a
ID:
1
File name:
_a7c4b700d55ace0c0b6e2005a507aa4cec3e76e23e33a5a22cd3e004cc18f652.exe
Verdict:
Malicious activity
Analysis date:
2025-12-19 12:35:31 UTC
Tags:
nuitka auto-startup python donutloader loader crypto-regex pulsar rat
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Verdict:
Malicious
Score:
94.1%
Tags:
autorun extens virus remo
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
anti-vm expand lolbin microsoft_visual_cc nuitka packed packed
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Verdict:
Malicious
File Type:
exe x64
First seen:
2025-12-19T09:50:00Z UTC
Last seen:
2025-12-19T18:24:00Z UTC
Hits:
~10
Detections:
Trojan.Win64.Donut.sb HEUR:Trojan.Win32.Generic Backdoor.MSIL.PulsarRAT.sb Backdoor.MSIL.PulsarRAT.ec Backdoor.MSIL.Agent.sb Trojan-PSW.MSIL.Agent.sb Trojan.Win64.DonutInjector.sb Trojan.Win64.Agentb.sb Trojan.Win32.Shellcode.sb Trojan.MSIL.Agent.sb HEUR:Trojan-Banker.MSIL.ClipBanker.gen
Malware family:
LogMeIn
Verdict:
Suspicious
Score:
96%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PDB Path PE (Portable Executable) PE File Layout Win 64 Exe x64
Verdict:
Malicious
Threat:
Family.PULSAR
Threat name:
Win64.Backdoor.Pulsarrat
Status:
Malicious
First seen:
2025-12-19 12:34:21 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
11 of 24 (45.83%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
quasarrat
donutloader
Similar samples:
+ 33 additional samples on MalwareBazaar
Result
Malware family:
quasar
Score:
10/10
Tags:
family:donutloader family:quasar loader spyware trojan
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Drops startup file
Loads dropped DLL
Detects DonutLoader
DonutLoader
Donutloader family
Quasar RAT
Quasar family
Quasar payload
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
a7c4b700d55ace0c0b6e2005a507aa4cec3e76e23e33a5a22cd3e004cc18f652
MD5 hash:
245529be4a57db9b78699e97ae630cd2
SHA1 hash:
84db9d16ca17a711b3f3082e587fa044d51df7aa
Malware family:
DonutLoader
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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: | BLOWFISH_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for Blowfish constants |
| Rule name: | DebuggerCheck__API |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerException__ConsoleCtrl |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | DebuggerException__SetConsoleCtrl |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | golang_bin_JCorn_CSC846 |
|---|---|
| Author: | Justin Cornwell |
| Description: | CSC-846 Golang detection ruleset |
| Rule name: | nuitka_py_compiler |
|---|---|
| Author: | Nikolaos 'n0t' Totosis |
| Description: | Executable compiled with Nuitka Python Compiler |
| Rule name: | upxHook |
|---|---|
| Author: | @r3dbU7z |
| Description: | Detect artifacts from 'upxHook' - modification of UPX packer |
| Reference: | https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/ |
| Rule name: | WHIRLPOOL_Constants |
|---|---|
| Author: | phoul (@phoul) |
| Description: | Look for WhirlPool constants |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Web download
Dropped by
Amadey
Delivery method
Distributed via web download
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