MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1002ab36c33691f640e0a523b31506eab3e0fa25a9ded356bea687571e44a5bb. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments

SHA256 hash: 1002ab36c33691f640e0a523b31506eab3e0fa25a9ded356bea687571e44a5bb
SHA3-384 hash: 488daba4c09cdc00d48b28d33cc158b1d64519ef27ef11ae88b85f06f968c16280a476826bf7130924d4e516a14284f5
SHA1 hash: ac4f86cc54526b71b0115c0801280cbd1ab39096
MD5 hash: e7099ac5fecf1dffab49fc01931889f3
humanhash: butter-juliet-low-mirror
File name:svchost.exe
Download: download sample
Signature Simda
File size:249'856 bytes
First seen:2024-09-03 02:13:45 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 25724a12bec6f765c371201f99ac92be (12 x Simda)
ssdeep 6144:2EXlSylvFuWaS54hIAv/QhuA7HY8pPZ0FP6BzxM5EmX:LAylvv5YRwh9HYd61xhmX
Threatray 2 similar samples on MalwareBazaar
TLSH T1CD3412C7A1482CE1C4400A3389FEE7415E3DF9492F5AD4FBDB984119AFA8A917F3521E
TrID 27.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
20.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
18.6% (.EXE) Win32 Executable (generic) (4504/4/1)
8.5% (.ICL) Windows Icons Library (generic) (2059/9)
8.3% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
File icon (PE):PE icon
dhash icon 0000000000000102 (12 x Simda)
Reporter adm1n_usa32
Tags:exe Simda

Intelligence


File Origin
# of uploads :
1
# of downloads :
384
Origin country :
RO RO
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
unrepellent.exe
Verdict:
Malicious activity
Analysis date:
2024-09-03 02:13:09 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
99.1%
Tags:
Encryption Generic Infostealer Network Stealth Trojan Atraps
Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file in the Windows subdirectories
Creating a process from a recently created file
DNS request
Connection attempt
Sending an HTTP POST request
Sending an HTTP GET request
Sending a custom TCP request
Launching the default Windows debugger (dwwin.exe)
Moving of the original file
Enabling autorun
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
89%
Tags:
overlay
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.
Result
Threat name:
Simda Stealer
Detection:
malicious
Classification:
bank.troj.spyw.expl.evad
Score:
100 / 100
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Checks if browser processes are running
Contains functionality to behave differently if execute on a Russian/Kazak computer
Contains functionality to capture and log keystrokes
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
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
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 malware configuration
Found stalling execution ending in API Sleep call
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Moves itself to temp directory
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
PE file contains section with special chars
Sigma detected: Files With System Process Name In Unsuspected Locations
Sigma detected: System File Execution Location Anomaly
System process connects to network (likely due to code injection or exploit)
Yara detected Simda Stealer
Behaviour
Behavior Graph:
Threat name:
Win32.Infostealer.Simda
Status:
Malicious
First seen:
2024-09-03 02:14:05 UTC
File Type:
PE (Exe)
Extracted files:
2
AV detection:
33 of 38 (86.84%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  10/10
Tags:
discovery persistence
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: RenamesItself
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Drops file in Windows directory
Modifies WinLogon
Executes dropped EXE
Loads dropped DLL
Modifies WinLogon for persistence
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Unpacked files
SH256 hash:
1afa76d8a3f646b731df0f878c7c4d70745f18b7d1db9c1b185708775ac97258
MD5 hash:
6e7af3fe69554d446570eee0ce458cc0
SHA1 hash:
67d55f88aecbd643be1ae5638437d4bd550f0d63
Detections:
Simda MALWARE_Win_Simda
SH256 hash:
1002ab36c33691f640e0a523b31506eab3e0fa25a9ded356bea687571e44a5bb
MD5 hash:
e7099ac5fecf1dffab49fc01931889f3
SHA1 hash:
ac4f86cc54526b71b0115c0801280cbd1ab39096
Please note that we are no longer able to provide a coverage score for Virus Total.

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:PE_Digital_Certificate
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Author:albertzsigovits

File information


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

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
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
SECURITY_BASE_APIUses Security Base APIadvapi32.dll::IsValidAcl
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::CreateFiber
kernel32.dll::GetDiskFreeSpaceW
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateDirectoryA
ole32.dll::CreateFileMoniker
kernel32.dll::ReplaceFileA
kernel32.dll::GetFileAttributesW
kernel32.dll::GetTempFileNameW
kernel32.dll::GetTempPathA
WIN_REG_APICan Manipulate Windows Registryadvapi32.dll::RegOpenKeyW
advapi32.dll::RegRestoreKeyA
WIN_USER_APIPerforms GUI Actionsuser32.dll::CreateMenu

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