MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf. 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: 12


Intelligence 12 IOCs YARA 25 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf
SHA3-384 hash: 92328dbd0fc065ae0620b7e035d7c4b508f54b67ae5baa78e01c4ea2a68008393c3d775b25cfc40bdeeec88c9b2cee50
SHA1 hash: 9a9d5f247ddd0f535353608cca33636175bfd7b2
MD5 hash: 1b215d075b63e2acf3c17b1dafe12f44
humanhash: victor-mike-kansas-alaska
File name:msedge_elf.dll
Download: download sample
Signature MassLogger
Create hunting rule
File size:4'023'296 bytes
First seen:2025-07-23 08:41:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 186025037961431336a056ca99785443 (1 x MassLogger)
ssdeep 49152:lMrIZZLeSo6tW5ApVi4JeICD7RlcGJco8GvBgFV2Pw3GqA6LiGp:/JgeGHO3VDi
TLSH T1F9168E06A7D80665E457CA30C66FC732C6B2B85B0731C79F0995E74A2D33BE24B6B325
TrID 48.7% (.EXE) Win64 Executable (generic) (10522/11/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Magika pebin
Reporter lowmal3
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
82
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
msedge_elf.dll
Verdict:
Malicious activity
Analysis date:
2025-07-23 08:43:58 UTC
Tags:
stealer evasion snake keylogger ims-api generic
Link:
https://app.any.run/tasks/e66560ee-afc3-4aca-9994-815e2f69ada1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/16450/
Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6880a06d2f623871a5f250e1
Tags:
backdoor snake virus hype
Result
Verdict:
Clean
Maliciousness:
Verdict:
Malicious
Labled as:
TrojanSpy/Stealer.qo
Link:
https://www.hybrid-analysis.com/sample/1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e20573b6-c3cd-447e-b7ad-f324559dce87
Result
Threat name:
MSIL Logger, MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1742532
Signature
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Contains functionality to capture screen (.Net source)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
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)
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: 1742532 Sample: msedge_elf.dll.exe Startdate: 23/07/2025 Architecture: WINDOWS Score: 100 35 reallyfreegeoip.org 2->35 37 checkip.dyndns.org 2->37 39 checkip.dyndns.com 2->39 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Multi AV Scanner detection for submitted file 2->51 55 7 other signatures 2->55 9 loaddll64.exe 1 2->9         started        signatures3 53 Tries to detect the country of the analysis system (by using the IP) 35->53 process4 process5 11 rundll32.exe 9->11         started        14 cmd.exe 1 9->14         started        16 rundll32.exe 9->16         started        18 32 other processes 9->18 signatures6 67 Writes to foreign memory regions 11->67 69 Allocates memory in foreign processes 11->69 71 Injects a PE file into a foreign processes 11->71 20 AddInProcess32.exe 11->20         started        23 rundll32.exe 14->23         started        25 InstallUtil.exe 14 2 16->25         started        27 AddInProcess32.exe 16->27         started        29 AddInProcess32.exe 2 18->29         started        process7 signatures8 57 Tries to steal Mail credentials (via file / registry access) 20->57 59 Tries to harvest and steal browser information (history, passwords, etc) 20->59 61 Writes to foreign memory regions 23->61 63 Allocates memory in foreign processes 23->63 65 Injects a PE file into a foreign processes 23->65 31 AddInProcess32.exe 15 2 23->31         started        process9 dnsIp10 41 checkip.dyndns.com 132.226.247.73, 49683, 49684, 49687 UTMEMUS United States 31->41 43 reallyfreegeoip.org 104.21.48.1, 443, 49685, 49686 CLOUDFLARENETUS United States 31->43 45 Tries to steal Mail credentials (via file / registry access) 31->45 signatures11
Score:
79%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable PDB Path PE (Portable Executable) Win 64 Exe x64
Link:
https://app.malva.re/file/1b215d075b63e2acf3c17b1dafe12f44
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf/
Threat name:
Win64.Spyware.Negasteal
Create hunting rule
Status:
Malicious
First seen:
2025-07-23 08:42:15 UTC
File Type:
PE+ (Dll)
AV detection:
20 of 36 (55.56%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=d4h2ym3zf3tnh2nbtwm5qhftwgqs4hz5xrbqqnjw4ro6bso5y67q._file
Verdict:
malicious
Label(s):
novastealer
Create hunting rule
Similar samples:
error
MassLogger
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery spyware stealer
Link:
https://tria.ge/reports/250723-kl49xat1hy/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
MassLogger
Masslogger family
Malware Config
C2 Extraction:
https://api.telegram.org/bot7972910313:AAEom6v8XuvIckUAcplolyFWizEpn-nliNc/sendMessage?chat_id=7640920144
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/22585e00-582a-425c-8111-16512a67948e
Unpacked files
SH256 hash:
1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf
MD5 hash:
1b215d075b63e2acf3c17b1dafe12f44
SHA1 hash:
9a9d5f247ddd0f535353608cca33636175bfd7b2
Link:
https://www.unpac.me/results/85c1d1ec-b28b-4e9c-8148-6bd210965b2a/
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/1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf

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: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:DebuggerCheck__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
Rule name:DetectEncryptedVariants
Create hunting rule
Author:Zinyth
Description:Detects 'encrypted' in ASCII, Unicode, base64, or hex-encoded
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:Lumma_Stealer_Detection
Create hunting rule
Author:ashizZz
Description:Detects a specific Lumma Stealer malware sample using unique strings and behaviors
Reference:https://seanthegeek.net/posts/compromized-store-spread-lumma-stealer-using-fake-captcha/
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:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:RANSOMWARE
Create hunting rule
Author:ToroGuitar
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:telegram_bot_api
Create hunting rule
Author:rectifyq
Description:Detects file containing Telegram Bot API
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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

Executable exe 1f0fac33792ee6d3e9a19d99d81cb3b1a12e1f3dbc43083536e45de0c9ddc7bf

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/16450/

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 (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::OpenProcess
KERNEL32.dll::VirtualAllocExNuma
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThreadpoolWork
KERNEL32.dll::CreateThreadpoolWait
KERNEL32.dll::CreateThreadpoolIo
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::FreeConsole
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::GetSystemDirectoryW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptCreateHash
bcrypt.dll::BCryptDestroyHash
bcrypt.dll::BCryptFinishHash
bcrypt.dll::BCryptGenRandom
bcrypt.dll::BCryptGetProperty
bcrypt.dll::BCryptHashData
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW

Comments