MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 01b51e4a4c514c6ee8d9c2eb8b888182e24d21e8fd2b228e376a42048cbfe585. 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
Simda
Vendor detections: 14
| SHA256 hash: | 01b51e4a4c514c6ee8d9c2eb8b888182e24d21e8fd2b228e376a42048cbfe585 |
|---|---|
| SHA3-384 hash: | be11550784b9a9b3b8e87cabfffbc784f3b75b8e166e5fffe6af0afac7b6599e84ad06b5fd6ff9bcf3c67960b6b53bb9 |
| SHA1 hash: | f8e3226ccc8b5219538b3d76dec935ce5127f999 |
| MD5 hash: | 224bbd7732edfed98b8cebdceddc9507 |
| humanhash: | three-blue-burger-fix |
| File name: | svchost.exe |
| Download: | download sample |
| Signature | Simda |
| File size: | 614'400 bytes |
| First seen: | 2025-11-23 09:47:24 UTC |
| Last seen: | 2025-11-23 10:25:34 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 101036759b28ecf59ff4865b1e53f3b8 (1 x Simda) |
| ssdeep | 12288:OwmWIarYnEKhsRKk34CW9DQvSkN29qyFhJy56d/eoyXjn9W:OwmWrYnxWKk3NW9DQvZN29X7Zyz9W |
| Threatray | 105 similar samples on MalwareBazaar |
| TLSH | T1C2D4CF51F285C176E0F1167296BF7B2B106D69654718B8E3E798BEC92C740F23A3C287 |
| TrID | 32.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5) 20.5% (.EXE) Win64 Executable (generic) (10522/11/4) 12.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 9.8% (.EXE) Win16 NE executable (generic) (5038/12/1) 8.7% (.EXE) Win32 Executable (generic) (4504/4/1) |
| Magika | pebin |
| Reporter |  abuse_ch |
| Tags: | exe Simda upx-dec |
abuse_ch
UPX decompressed file, sourced from SHA256 4c2ac723fa0b5835243712cf8f1205701cf441e4a030587f9d64e96a9205a734UPX unpacked
This file is the unpacked version of a file that has been packed with UPX. Below is furhter information about the parent (compressed) file.
| File size (compressed) : | 346'624 bytes |
|---|---|
| File size (de-compressed) : | 614'400 bytes |
| Format: | win32/pe |
| Packed file: | 4c2ac723fa0b5835243712cf8f1205701cf441e4a030587f9d64e96a9205a734 |
Intelligence
File Origin
# of uploads :
3
# of downloads :
71
Origin country :
NLVendor Threat Intelligence
Detection:
Simda
Gathering data
Gathering data
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the Windows subdirectories
Searching for synchronization primitives
Сreating synchronization primitives
Creating a process from a recently created file
DNS request
Connection attempt
Sending an HTTP GET request
Launching the default Windows debugger (dwwin.exe)
Sending a custom TCP request
Searching for the anti-virus window
Moving of the original file
Query of malicious DNS domain
Enabling autorun
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
anti-debug anti-vm anti-vm banker base64 crypto evasive explorer keylogger keylogger lolbin lordpe obfuscated packed packed packed rundll32 shifu shiz
Verdict:
Malicious
Labled as:
Backdoor.Simda
Result
Gathering data
Result
Threat name:
Simda Stealer
Detection:
malicious
Classification:
bank.troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Checks if browser processes are running
Contains functionality to compare user and computer (likely to detect sandboxes)
Contains functionality to detect sandboxes (registry SystemBiosVersion/Date)
Contains functionality to infect the boot sector
Contains functionality to inject threads in other processes
Contains VNC / remote desktop functionality (version string found)
Creates an undocumented autostart registry key
Drops executables to the windows directory (C:\Windows) and starts them
Drops PE files with benign system names
Found evasive API chain (may stop execution after checking volume information)
Found evasive API chain checking for user administrative privileges
Found stalling execution ending in API Sleep call
Malicious sample detected (through community Yara rule)
Moves itself to temp directory
Multi AV Scanner detection for submitted file
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: System File Execution Location Anomaly
Yara detected Simda Stealer
Behaviour
Behavior Graph:
Score:
100%
Verdict:
Malware
File Type:
PE
Verdict:
inconclusive
YARA:
4 match(es)
Tags:
Executable PE (Portable Executable) PE File Layout Win 32 Exe x86
Threat name:
Win32.Backdoor.Simda
Status:
Malicious
First seen:
2024-07-02 05:58:18 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
31 of 36 (86.11%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Label(s):
simda
Similar samples:
+ 95 additional samples on MalwareBazaar
Result
Malware family:
simda
Score:
10/10
Tags:
family:simda discovery persistence stealer trojan
Behaviour
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
Drops file in Windows directory
Modifies WinLogon
Executes dropped EXE
Simda family
simda
Verdict:
Malicious
Tags:
stealer simda Win.Trojan.Simda-10002732-0
YARA:
MALWARE_Win_Simda win_simda_auto
Unpacked files
SH256 hash:
01b51e4a4c514c6ee8d9c2eb8b888182e24d21e8fd2b228e376a42048cbfe585
MD5 hash:
224bbd7732edfed98b8cebdceddc9507
SHA1 hash:
f8e3226ccc8b5219538b3d76dec935ce5127f999
Detections:
win_simda_auto
win_simda_g1
win_simda_g0
Simda
MALWARE_Win_Simda
Malware family:
Shifu
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: | CP_Script_Inject_Detector |
|---|---|
| Author: | DiegoAnalytics |
| Description: | Detects attempts to inject code into another process across PE, ELF, Mach-O binaries |
| Rule name: | FreddyBearDropper |
|---|---|
| Author: | Dwarozh Hoshiar |
| Description: | Freddy Bear Dropper is dropping a malware through base63 encoded powershell scrip. |
| Rule name: | MALWARE_Win_Simda |
|---|---|
| Author: | ditekShen |
| Description: | Detects Simda / Shifu infostealer |
| Rule name: | NET |
|---|---|
| Author: | malware-lu |
| Rule name: | SEH__vectored |
|---|---|
| Reference: | https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara |
| Rule name: | shellcode |
|---|---|
| Author: | nex |
| Description: | Matched shellcode byte patterns |
| 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: | TH_Generic_MassHunt_Win_Malware_2025_CYFARE |
|---|---|
| Author: | CYFARE |
| Description: | Generic Windows malware mass-hunt rule - 2025 |
| Reference: | https://cyfare.net/ |
| Rule name: | Windows_Trojan_Zeus_e51c60d7 |
|---|---|
| Author: | Elastic Security |
| Description: | Detects strings used in Zeus web injects. Many other malware families are built on Zeus and may hit on this signature. |
| Reference: | https://www.virusbulletin.com/virusbulletin/2014/10/paper-evolution-webinjects |
| Rule name: | win_simda_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | Detects win.simda. |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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