MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 51e1d26d830aa5eec07750c8d2b2c3fbf9509c5870c111154c5e014f853f939e. 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: 14
| SHA256 hash: | 51e1d26d830aa5eec07750c8d2b2c3fbf9509c5870c111154c5e014f853f939e |
|---|---|
| SHA3-384 hash: | abb2a7769c720a78ed65615d1ed9cacf1d77d8215a912997303d4892a48a5b161464873fbb6b4904d01138632bbd9c2c |
| SHA1 hash: | eaecc24b357e1ce7cd7e7d1872e46c26562186d7 |
| MD5 hash: | f43f6710b4bf1c9650a822eac33b835f |
| humanhash: | sodium-lemon-table-venus |
| File name: | eStub.exe |
| Download: | download sample |
| Signature | njrat |
| File size: | 201'728 bytes |
| First seen: | 2025-12-28 19:57:47 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (49'241 x AgentTesla, 20'496 x Formbook, 12'373 x SnakeKeylogger) |
| ssdeep | 6144:Id+PdrasETCtT7GMknBbpDMI8Tr0U1901ZY++RRe3yKL:I0rasOcvi7DMI8Tr0U1901ZY++RRe3y2 |
| TLSH | T1C614889D721072DFC867D472DEA81CA8FA6074BB931F4213A02715EDAA4D997DF140F2 |
| TrID | 45.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.4% (.EXE) Win64 Executable (generic) (10522/11/4) 9.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.4% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.6% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| Reporter |  BastianHein |
| Tags: | exe NjRAT |
Intelligence
File Origin
# of uploads :
1
# of downloads :
195
Origin country :
CLVendor Threat Intelligence
Malware configuration found for:
ConfuserEx
Details
Malware family:
n/a
ID:
1
File name:
eStub.exe
Verdict:
No threats detected
Analysis date:
2025-12-28 19:58:17 UTC
Tags:
confuser
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:
90.9%
Tags:
phishing packed
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
asyncrat base64 confuser confuserex net obfuscated obfuscated packed packed quasarrat reconnaissance vbnet
Verdict:
Malicious
Labled as:
Application.MSILHeracles.Generic
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-12-28T10:40:00Z UTC
Last seen:
2025-12-30T18:15:00Z UTC
Hits:
~10
Detections:
HEUR:Backdoor.MSIL.Crysan.gen Backdoor.MSIL.Crysan.a
Verdict:
Suspicious
Score:
99%
Verdict:
Malware
File Type:
PE
Verdict:
njRat
YARA:
10 match(es)
Tags:
.Net Executable Managed .NET njRat PDB Path PE (Portable Executable) PE File Layout RAT SOS: 0.96 Win 32 Exe x86
Detection:
asyncrat
Verdict:
Malicious
Threat:
Backdoor.MSIL.Crysan
Threat name:
Win32.Trojan.Etset
Status:
Malicious
First seen:
2025-12-28 19:58:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
1
AV detection:
18 of 24 (75.00%)
Threat level:
5/5
Detection(s):
Suspicious file
Result
Malware family:
n/a
Score:
5/10
Tags:
discovery
Behaviour
Suspicious use of AdjustPrivilegeToken
System Location Discovery: System Language Discovery
Verdict:
Malicious
Tags:
Win.Packed.AsyncRAT-9856570-1
YARA:
n/a
Unpacked files
SH256 hash:
51e1d26d830aa5eec07750c8d2b2c3fbf9509c5870c111154c5e014f853f939e
MD5 hash:
f43f6710b4bf1c9650a822eac33b835f
SHA1 hash:
eaecc24b357e1ce7cd7e7d1872e46c26562186d7
SH256 hash:
f55354f7ca75b37377f8467207fe1b5393c0fe9326e58cb72290a6cef1cdc611
MD5 hash:
df7faeb5b662accf0c864952d2794f72
SHA1 hash:
2ba4b668d1112911fb098f93d91816dfa1be1e85
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: | asyncrat |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect AsyncRat in memory |
| Reference: | internal research |
| Rule name: | DebuggerCheck__RemoteAPI |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | INDICATOR_EXE_Packed_ConfuserEx |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables packed with ConfuserEx Mod |
| Rule name: | malware_asyncrat |
|---|---|
| Description: | detect AsyncRat in memory |
| Reference: | https://github.com/NYAN-x-CAT/AsyncRAT-C-Sharp |
| Rule name: | msil_suspicious_use_of_strreverse |
|---|---|
| Author: | dr4k0nia |
| Description: | Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | Njrat |
|---|---|
| Author: | botherder https://github.com/botherder |
| Description: | Njrat |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | SUSP_NET_Msil_Suspicious_Use_StrReverse |
|---|---|
| Author: | dr4k0nia, modified by Florian Roth |
| Description: | Detects mixed use of Microsoft.CSharp and VisualBasic to use StrReverse |
| Reference: | https://github.com/dr4k0nia/yara-rules |
| Rule name: | Sus_CMD_Powershell_Usage |
|---|---|
| Author: | XiAnzheng |
| Description: | May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP) |
| Rule name: | win_asyncrat_w0 |
|---|---|
| Author: | JPCERT/CC Incident Response Group |
| Description: | detect AsyncRat in memory |
| Reference: | internal research |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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