MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18. 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


MassLogger


Vendor detections: 17


Intelligence 17 IOCs YARA 20 File information Comments
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SHA256 hash: f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18
SHA3-384 hash: 872b8b5fa140dbb10bc30241a342c22869a56f5e266d06281bb5212282d00e93b556677707f5294d55a74758a894faea
SHA1 hash: 4dd16e61f77f983bf33c87ab2bd0e920e07d8906
MD5 hash: d8b401272e49e99c87e2128795329e00
humanhash: carpet-sodium-alaska-massachusetts
File name:Contract #2.jpg.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:968'704 bytes
First seen:2025-03-28 10:26:37 UTC
Last seen:2025-04-08 08:49:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:ku6J33O0c+JY5UZ+XC0kGso6FaawsZNG5Z7WY:eu0c++OCvkGs9FaafZNpY
Threatray 574 similar samples on MalwareBazaar
TLSH T1B225AE2273DDC360CB669173BF69B7016EBF7C610630B85B2F980D7DA950162262D7A3
TrID 32.2% (.EXE) Win64 Executable (generic) (10522/11/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4504/4/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter cocaman
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
447
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Contract #2.jpg.exe
Verdict:
Malicious activity
Analysis date:
2025-03-28 10:29:26 UTC
Tags:
snake keylogger evasion telegram stealer ims-api generic
Link:
https://app.any.run/tasks/2ab514fe-71aa-4dd7-ad3e-c045613985c2

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.vh.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67e67a51855e5ec524091078
Tags:
underscore autorun autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Creating a process from a recently created file
Launching a process
Сreating synchronization primitives
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
adaptive-context anti-debug autoit cmdkey compiled-script extrac32 fingerprint hacktool keylogger lolbin masquerade microsoft_visual_cc packed packed packer_detected
Link:
https://www.filescan.io/uploads/67e6799b6a150b67eec810c5/reports/6be8b9e6-56f4-4660-a288-a5137415c229/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18
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:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e9b9512e-eb0e-43dc-b29c-9f69e2478587
Result
Threat name:
MSIL Logger, MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1651036
Signature
.NET source code references suspicious native API functions
Binary is likely a compiled AutoIt script file
Contains functionality to log keystrokes (.Net Source)
Drops VBS files to the startup folder
Found malware configuration
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Drops script at startup location
Sigma detected: WScript or CScript Dropper
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses an obfuscated file name to hide its real file extension (double extension)
Uses the Telegram API (likely for C&C communication)
Windows Scripting host queries suspicious COM object (likely to drop second stage)
Writes to foreign memory regions
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1651036 Sample: Contract #2.jpg.exe Startdate: 28/03/2025 Architecture: WINDOWS Score: 100 30 reallyfreegeoip.org 2->30 32 api.telegram.org 2->32 34 2 other IPs or domains 2->34 42 Suricata IDS alerts for network traffic 2->42 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 52 11 other signatures 2->52 8 Contract #2.jpg.exe 4 2->8         started        12 wscript.exe 1 2->12         started        signatures3 48 Tries to detect the country of the analysis system (by using the IP) 30->48 50 Uses the Telegram API (likely for C&C communication) 32->50 process4 file5 26 C:\Users\user\AppData\Local\...\lards.exe, PE32 8->26 dropped 58 Binary is likely a compiled AutoIt script file 8->58 60 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 8->60 14 lards.exe 2 8->14         started        62 Windows Scripting host queries suspicious COM object (likely to drop second stage) 12->62 18 lards.exe 1 12->18         started        signatures6 process7 file8 28 C:\Users\user\AppData\Roaming\...\lards.vbs, data 14->28 dropped 64 Multi AV Scanner detection for dropped file 14->64 66 Binary is likely a compiled AutoIt script file 14->66 68 Drops VBS files to the startup folder 14->68 70 Switches to a custom stack to bypass stack traces 14->70 20 RegSvcs.exe 15 2 14->20         started        72 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 18->72 74 Writes to foreign memory regions 18->74 76 Maps a DLL or memory area into another process 18->76 24 RegSvcs.exe 2 18->24         started        signatures9 process10 dnsIp11 36 api.telegram.org 149.154.167.220, 443, 49718, 49727 TELEGRAMRU United Kingdom 20->36 38 checkip.dyndns.com 158.101.44.242, 49713, 49723, 80 ORACLE-BMC-31898US United States 20->38 40 reallyfreegeoip.org 104.21.64.1, 443, 49715, 49725 CLOUDFLARENETUS United States 20->40 54 Tries to steal Mail credentials (via file / registry access) 24->54 56 Tries to harvest and steal browser information (history, passwords, etc) 24->56 signatures12
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-03-27 07:11:39 UTC
File Type:
PE (Exe)
Extracted files:
27
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=645bvtyrxsrdlwpq6iwaxjmecb5hnjkgkltdk3pqqdgf5qca7qma._file
Verdict:
malicious
Label(s):
novastealer
Create hunting rule
unc_loader_036
Create hunting rule
Similar samples:
2e911f1f12cdbe9e6da0d0c0c7906ccbdd669751c98a75e556890b2a0e5b0af5
MassLogger
5942293d4ed06c7427d43524f4226be05ead22d7cb55ec2373fcb482fab62c4b
MassLogger
5eb39af58bc99962a6439d873bda78086903301b0476ef79daf3802220fdf382
MassLogger
6138f369226eda1479b0df8e284d77b329ba2a14e3fcb9648dc53892c5ab2505
MassLogger
68eeebf088677c025da067485a8448bfa38f4b13c61e5e2c2ed717701df74222
MassLogger
924d6305e823e4e01d7e14cc17c4521e7aa204150ac1d420a9195ac87127e115
MassLogger
9f2ae7e1250aec5a285790ab4b87a5bfa3424b3135e0e3199cd9b289a9340c39
MassLogger
bff4e62694c734a55ffa6ce598b52de6078dfec2f045325da187e72bdf6bd978
MassLogger
ce0b9b24b5c1d33c48d8eb08ff59cc8b7d529a1366219f60ae80c1eafb3801ad
MassLogger
error
MassLogger
f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18
MassLogger
+ 564 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
collection discovery
Link:
https://tria.ge/reports/250328-mg6naawqy6/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Program crash
System Location Discovery: System Language Discovery
AutoIT Executable
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Drops startup file
Executes dropped EXE
Loads dropped DLL
Verdict:
Malicious
Tags:
trojan 404keylogger
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/8aa48dbc-1bcd-470c-ad48-c986c8cfa48f
Unpacked files
SH256 hash:
f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18
MD5 hash:
d8b401272e49e99c87e2128795329e00
SHA1 hash:
4dd16e61f77f983bf33c87ab2bd0e920e07d8906
Link:
https://www.unpac.me/results/4ef31f35-efda-446f-80e8-1448a28cb98c/
SH256 hash:
836992505ca757663be568221c38f9d268c3dcfcb712b36e50aadf39cf1b63a5
MD5 hash:
eb3e24c137e28ba6844f75408339e3bf
SHA1 hash:
bf103be94b82d4c277d83b73a545ced09c5af443
Detections:
win_404keylogger_g1
Create hunting rule
win_masslogger_w0
Create hunting rule
MAL_Envrial_Jan18_1
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Link:
https://www.unpac.me/results/4ef31f35-efda-446f-80e8-1448a28cb98c/
Parent samples :
f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18
490cc57557d9617b7da8acc7453f39a6250d7939730d9fe99409b8f8603769ef
c67dcc3b017cde79ad535ac949ecf65f218a97d086a6ba79cc08b9b8f79c87b5
c6de8c6d5228fa7a6101a2cf1574d974f48d8e6caf1c862cc5004d36cf3d527b
ade03b33ad1a47b43d99a5eb7f469d127f98df657167c31700fd3c5cc76c522d
Malware family:
PrivateLogger
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f73a1acf11bc/report/overview.html
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/f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:crime_snake_keylogger
Create hunting rule
Author:Rony (r0ny_123)
Description:Detects Snake keylogger payload
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
Author:ditekSHen
Description:Detects binaries (Windows and macOS) referencing many web browsers. Observed in information stealers.
Rule name:INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Author:ditekSHen
Description:Detects executables using Telegram Chat Bot
Rule name:MAL_Envrial_Jan18_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:MAL_Envrial_Jan18_1_RID2D8C
Create hunting rule
Author:Florian Roth
Description:Detects Encrial credential stealer malware
Reference:https://twitter.com/malwrhunterteam/status/953313514629853184
Rule name:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:Windows_Trojan_SnakeKeylogger_af3faa65
Create hunting rule
Author:Elastic Security
Rule name:win_masslogger_w0
Create hunting rule
Author:govcert_ch

File information

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

Malspam

MassLogger

ace 0f944e0788d4f51370f36b9acf9ff5d732f4ceb6bfa1a671ba361418dc12c7ee

MassLogger

Executable exe f73a1acf11bca235d9f0f22c0ba584107a76a54652e6356df080cc5ec040fc18

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 0f944e0788d4f51370f36b9acf9ff5d732f4ceb6bfa1a671ba361418dc12c7ee
  
Dropped by
MD5 c1aee140e3e809685a84854625446564

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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