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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 aa8fc19f16e4e185f6464d2e18ec7731c235d2b0d364f76965cf5967d5eef613. 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



ZLoader


Vendor detections: 13


Intelligence 13 IOCs YARA 2 File information Comments

SHA256 hash: aa8fc19f16e4e185f6464d2e18ec7731c235d2b0d364f76965cf5967d5eef613
SHA3-384 hash: c34d85ae7fa8d820dc57754ae2b6f934b9b8b4178cdad5a4c65480cfe473511e111798ab3996a7ccfa4c822ac49227f9
SHA1 hash: 7f3cf3274cbf83233aeda6074362216b91d34cbd
MD5 hash: b57e40b039858fd23e0f25a03db376ad
humanhash: victor-idaho-romeo-florida
File name:isen.dll.bin
Download: download sample
Signature ZLoader
File size:503'296 bytes
First seen:2025-03-13 13:36:12 UTC
Last seen:2025-03-13 14:31:51 UTC
File type:DLL dll
MIME type:application/x-dosexec
imphash 260441d5ca8d9f18f1b88c86dd5a5a50 (2 x ZLoader, 1 x Gozi)
ssdeep 12288:uDKxKMk8PhMNo+e8kGOK9ab4ozUWdBENcYcj6D9r6W3FaOi:uDjMk8ZMNYnGOSSjgW41QEv1aO
Threatray 3 similar samples on MalwareBazaar
TLSH T166B4D0D12A40B2B4E14F893D9421A07281BCBC652F14D4D1FA878BBB3A374FA9954FD7
TrID 68.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.5% (.EXE) Win64 Executable (generic) (10522/11/4)
6.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.4% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter KatzenTech
Tags:dll exe ZLoader

Intelligence


File Origin
# of uploads :
2
# of downloads :
460
Origin country :
DE DE
Vendor Threat Intelligence
Verdict:
Malicious
Score:
99.1%
Tags:
zloader
Result
Verdict:
Malware
Maliciousness:
Gathering data
Result
Threat name:
n/a
Detection:
malicious
Classification:
evad
Score:
96 / 100
Signature
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Contains functionality to inject code into remote processes
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Writes to foreign memory regions
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1637327 Sample: isen.dll.bin.dll Startdate: 13/03/2025 Architecture: WINDOWS Score: 96 28 snnmnkxdhflwgthqismb.com 2->28 30 nlbmfsyplohyaicmxhum.com 2->30 32 Antivirus detection for URL or domain 2->32 34 Antivirus detection for dropped file 2->34 36 Antivirus / Scanner detection for submitted sample 2->36 38 3 other signatures 2->38 9 loaddll32.exe 1 2->9         started        signatures3 process4 signatures5 44 Contains functionality to inject code into remote processes 9->44 46 Writes to foreign memory regions 9->46 48 Allocates memory in foreign processes 9->48 12 cmd.exe 1 9->12         started        14 rundll32.exe 9->14         started        16 rundll32.exe 9->16         started        18 3 other processes 9->18 process6 process7 20 rundll32.exe 12->20         started        signatures8 40 Writes to foreign memory regions 20->40 42 Allocates memory in foreign processes 20->42 23 msiexec.exe 2 25 20->23         started        process9 file10 26 C:\Users\user\AppData\Roaming\...\umbe.dll, PE32 23->26 dropped
Threat name:
Win32.Spyware.Zloader
Status:
Malicious
First seen:
2020-06-10 06:20:31 UTC
File Type:
PE (Dll)
Extracted files:
1
AV detection:
30 of 38 (78.95%)
Threat level:
  2/5
Result
Malware family:
zloader
Score:
  10/10
Tags:
family:zloader botnet:june08 campaign:june botnet discovery trojan
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Zloader family
Zloader, Terdot, DELoader, ZeusSphinx
Malware Config
C2 Extraction:
http://snnmnkxdhflwgthqismb.com/post.php
http://nlbmfsyplohyaicmxhum.com/post.php
Unpacked files
SH256 hash:
aa8fc19f16e4e185f6464d2e18ec7731c235d2b0d364f76965cf5967d5eef613
MD5 hash:
b57e40b039858fd23e0f25a03db376ad
SHA1 hash:
7f3cf3274cbf83233aeda6074362216b91d34cbd
SH256 hash:
d9af624fdec5866efeccfc1cff94a1235b50e9076d4130316ccfa54e96cf4a2c
MD5 hash:
6240954bc64cb130edb4c791f60a7f19
SHA1 hash:
b000dfa5d8f89b855b134328fac5bddf7005f01b
Detections:
win_zloader_auto
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:DebuggerCheck__API
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

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_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::SetEntriesInAclW
ADVAPI32.dll::InitializeSecurityDescriptor
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::SetSecurityDescriptorDacl
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineA
KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW
KERNEL32.dll::GetSystemDirectoryW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_SVC_APICan Manipulate Windows ServicesADVAPI32.dll::ControlService
ADVAPI32.dll::CreateServiceW
ADVAPI32.dll::OpenSCManagerW
ADVAPI32.dll::OpenServiceW
ADVAPI32.dll::QueryServiceStatus
ADVAPI32.dll::RegisterServiceCtrlHandlerW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::FindWindowW

Comments