MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32. 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


Neshta


Vendor detections: 16


Intelligence 16 IOCs YARA 10 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32
SHA3-384 hash: ffa4db6ae0694f6ec4de2051f6ea7c66d9201a7e169d5303e82bd282fd8a68f3ce9ed827421ebf23bc3aeb8725ce1a88
SHA1 hash: 70c9e70645f676e010de012c3ac2862bfb99536c
MD5 hash: b5b8b835206851ef6384015bcda92cc3
humanhash: cat-potato-michigan-nevada
File name:b5b8b835206851ef6384015bcda92cc3
Download: download sample
Signature Neshta
Create hunting rule
File size:10'005'415 bytes
First seen:2024-08-04 12:55:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash d7401947d3623a2199a2114d62923cd5 (2 x Neshta, 2 x XWorm, 1 x Sality)
ssdeep 98304:4UL80VJ9FevYYMeBFh5iFIRv2Vb84DnjocyBQPnRNJe1B+XKgbF88aOsSHhyntpZ:4M/neMeR5U84WGRNJprJsKAPIAIkN
Threatray 57 similar samples on MalwareBazaar
TLSH T133A6F12B5490AD3ECC6616F826AD0F6AC327C9F07584D08BDBE07DA7A5611E1E17831F
TrID 74.3% (.EXE) MinGW32 C/C++ Executable (245239/59/22)
9.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
5.0% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
3.1% (.EXE) Win64 Executable (generic) (10523/12/4)
1.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
dhash icon 98b0f88ccc8ecc6c (1 x Neshta)
Reporter zbetcheckin
Tags:32 exe Neshta

Intelligence

File Origin
# of uploads :
1
# of downloads :
330
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
b5b8b835206851ef6384015bcda92cc3
Verdict:
No threats detected
Analysis date:
2024-08-04 12:55:59 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/08130951-e365-4a0e-b69e-e357fcde87ab

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66af7a67037b02d0daed894d
Tags:
Banker Encryption Generic Stealth Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file in the Windows directory
Creating a process from a recently created file
Modifying an executable file
Restart of the analyzed sample
Creating a service
Launching a service
Searching for synchronization primitives
Creating a file in the %temp% subdirectories
Creating a file in the Program Files subdirectories
Enabling autorun for a service
Enabling autorun with the shell\open\command registry branches
Infecting executable files
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
borland_delphi overlay packed
Link:
https://www.filescan.io/uploads/66af7a63b67cf38542c3a3c4/reports/58b3bae0-64f7-4a0f-aa58-6952c3c9f4ec/overview
Verdict:
Malicious
Labled as:
Jeefo.A
Link:
https://www.hybrid-analysis.com/sample/a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Jeefo
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/75b488df-5388-4200-86e0-d749a6ea5398
Result
Threat name:
Neshta
Create hunting rule
Detection:
malicious
Classification:
spre.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1487534
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Creates an undocumented autostart registry key
Drops executable to a common third party application directory
Drops executables to the windows directory (C:\Windows) and starts them
Drops or copies MsMpEng.exe (Windows Defender, likely to bypass HIPS)
Drops PE files with a suspicious file extension
Drops PE files with benign system names
Found evasive API chain (may stop execution after checking mutex)
Infects executable files (exe, dll, sys, html)
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sample is not signed and drops a device driver
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: Suspect Svchost Activity
Sigma detected: System File Execution Location Anomaly
Yara detected Neshta
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1487534 Sample: kY9GhCLVvC.exe Startdate: 04/08/2024 Architecture: WINDOWS Score: 100 85 Malicious sample detected (through community Yara rule) 2->85 87 Antivirus detection for dropped file 2->87 89 Antivirus / Scanner detection for submitted sample 2->89 91 9 other signatures 2->91 14 kY9GhCLVvC.exe 1 2->14         started        18 svchost.exe 2->18         started        process3 file4 75 C:\Windows\svchost.exe, PE32 14->75 dropped 107 Drops PE files with a suspicious file extension 14->107 109 Drops or copies MsMpEng.exe (Windows Defender, likely to bypass HIPS) 14->109 111 Drops PE files with benign system names 14->111 20 svchost.exe 14->20         started        77 C:\Program Files\...\helper.exe, PE32 18->77 dropped 79 C:\...\maintenanceservice_installer.exe, PE32 18->79 dropped 81 C:\Program Files\...\MavInject32.exe, PE32 18->81 dropped 83 6 other malicious files 18->83 dropped 113 Drops executable to a common third party application directory 18->113 115 Infects executable files (exe, dll, sys, html) 18->115 signatures5 process6 file7 63 C:\Users\user\Desktop\kY9GhCLVvC.exe, PE32 20->63 dropped 97 Found evasive API chain (may stop execution after checking mutex) 20->97 24 kY9GhCLVvC.exe 5 20->24         started        signatures8 process9 file10 67 C:\Windows\svchost.com, PE32 24->67 dropped 69 C:\Users\user\AppData\Local\Temp\chrome.exe, PE32 24->69 dropped 71 C:\Users\user\AppData\...\kY9GhCLVvC.exe, PE32 24->71 dropped 73 88 other malicious files 24->73 dropped 101 Creates an undocumented autostart registry key 24->101 103 Infects executable files (exe, dll, sys, html) 24->103 28 kY9GhCLVvC.exe 24->28         started        signatures11 process12 signatures13 105 Drops executables to the windows directory (C:\Windows) and starts them 28->105 31 svchost.exe 28->31         started        process14 process15 33 kY9GhCLVvC.exe 3 2 31->33         started        37 svchost.com 31->37         started        file16 55 C:\...\maintenanceservice.exe, PE32 33->55 dropped 57 C:\Program Files (x86)\...\Uninstall.exe, PE32 33->57 dropped 59 C:\...\MicrosoftEdgeUpdateOnDemand.exe, PE32 33->59 dropped 61 70 other malicious files 33->61 dropped 93 Drops executable to a common third party application directory 33->93 95 Infects executable files (exe, dll, sys, html) 33->95 39 svchost.com 33->39         started        43 kY9GhCLVvC.exe 37->43         started        signatures17 process18 file19 65 C:\Windows\directx.sys, ASCII 39->65 dropped 99 Sample is not signed and drops a device driver 39->99 45 kY9GhCLVvC.exe 39->45         started        47 svchost.com 43->47         started        signatures20 process21 process22 49 svchost.com 45->49         started        51 kY9GhCLVvC.exe 47->51         started        process23 53 kY9GhCLVvC.exe 49->53         started       
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32/
Threat name:
Win32.Virus.Jeefo
Create hunting rule
Status:
Malicious
First seen:
2024-08-04 12:08:45 UTC
File Type:
PE (Exe)
Extracted files:
54
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=un3xbov5qaxc4z6daeuavmc53bmftat2xanyau5tf7wkxu2o5yza._file
Verdict:
malicious
Similar samples:
a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32
Neshta
a468384b275c437d13c05d8433a2223910db37b9251fe0602752a7dc7664253c
Neshta
dc48e95839bcfd343c62e0a574a94e9640b8463e9c5c29bf04e7423135307994
Neshta
e558c72cc9d709749a2afeca32409fe71b4038d27440d2a933b0ff8f47c9a0a7
Neshta
ec2ec99d719ccde3972abb4db0ef83eae6462f4697861529ead23d304c527d29
Neshta
f8d91c8bc33c75ab7794e0c0a8498110cf03403daed2caf77a47975402be2e48
Neshta
+ 47 additional samples on MalwareBazaar
Result
Malware family:
neshta
Create hunting rule
Score:
  10/10
Tags:
family:neshta discovery persistence pyinstaller spyware stealer
Link:
https://tria.ge/reports/240804-p6cgvazejh/
Behaviour
Modifies registry class
Suspicious use of WriteProcessMemory
Detects Pyinstaller
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Modifies system executable filetype association
Reads user/profile data of web browsers
Detect Neshta payload
Neshta
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/3d35b24b-415a-4c99-9e71-0bc9804336b5
Unpacked files
SH256 hash:
6c78408d2e43feb47cd376da9e30af85f4c090f1cd9dece75f4f0fa509860d53
MD5 hash:
3453e6896eb5c7fd4a6c7b115b190735
SHA1 hash:
99119023ac82de82b9fa19bb33fa06de2236572e
Detections:
win_neshta_g0
Create hunting rule
win_neshta_auto
Create hunting rule
win_neshta_1
Create hunting rule
MAL_Malware_Imphash_Mar23_1
Create hunting rule
MAL_Neshta_Generic
Create hunting rule
Link:
https://www.unpac.me/results/0091fc22-009f-4aa0-9b37-f9b96c602100/
SH256 hash:
a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32
MD5 hash:
b5b8b835206851ef6384015bcda92cc3
SHA1 hash:
70c9e70645f676e010de012c3ac2862bfb99536c
Detections:
win_neshta_1
Create hunting rule
PyInstaller
Create hunting rule
Link:
https://www.unpac.me/results/0091fc22-009f-4aa0-9b37-f9b96c602100/
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/a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DevCv4
Create hunting rule
Author:malware-lu
Rule name:MALWARE_Win_Neshta
Create hunting rule
Author:ditekSHen
Description:Detects Neshta
Rule name:PyInstaller
Create hunting rule
Author:@bartblaze
Description:Identifies executable converted using PyInstaller.
Rule name:VideoLanClient
Create hunting rule
Author:malware-lu
Rule name:W32JeefoPEFileInfector
Create hunting rule
Author:malware-lu
Rule name:Windows_Virus_Neshta_2a5a14c8
Create hunting rule
Author:Elastic Security

File information

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

Web download

Neshta

Executable exe a37770babd802e2e67c301280ab05dd85859827ab81b8053b32fecabd34eee32

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/3088268/

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetDriveTypeA
KERNEL32.dll::GetStartupInfoA
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileA
KERNEL32.dll::CreateFileA
KERNEL32.dll::GetWindowsDirectoryA
KERNEL32.dll::GetFileAttributesA
KERNEL32.dll::FindFirstFileA
KERNEL32.dll::GetTempPathA
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.DLL::RegCreateKeyExA
ADVAPI32.DLL::RegSetValueExA
WIN_SVC_APICan Manipulate Windows ServicesADVAPI32.DLL::CreateServiceA
ADVAPI32.DLL::OpenSCManagerA
ADVAPI32.DLL::OpenServiceA
ADVAPI32.DLL::RegisterServiceCtrlHandlerA
ADVAPI32.DLL::StartServiceA
ADVAPI32.DLL::StartServiceCtrlDispatcherA

Comments


Avatar
zbet commented on 2024-08-04 12:55:15 UTC

url : hxxp://164.132.200.137/rev.exe