MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2323b4b4394b43e7b111f83e2f487238bdfa3ce99215309a7f86cac39be51235. 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


Intelligence File information Yara 2 Comments

SHA256 hash: 2323b4b4394b43e7b111f83e2f487238bdfa3ce99215309a7f86cac39be51235
SHA3-384 hash: 20d6d8e798243a39be1fb8d5644f373fef9cca3c1dbaf334610545b0051ee84b2250fbb344c0ae89fb4c01663b4cca9f
SHA1 hash: af5308028d7432d264a27218c79e9870d17c724e
MD5 hash: c56b8249e2d2be73d21bd63af677772e
humanhash: summer-football-salami-oven
File name:c56b8249e2d2be73d21bd63af677772e.exe
Download: download sample
Signature MassLogger
File size:1'204'224 bytes
First seen:2020-07-31 08:35:39 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 2e374e6a01735b73e577e6a14415ed0c
ssdeep 24576:eiQOD2qr1K2rNsU4nInPMnXcxnUEk7+3/A7JiW6IGwLRJ6j:b9x4nInPMneUy3i0riJ6j
TLSH F245E12FF2E04436D133167F9C1B6759A83ABD1C2A2598452BE92F0C5F387B1346B297
Reporter @abuse_ch
Tags:exe MassLogger


Twitter
@abuse_ch
MassLogger SMTP exfil server:
mail.privateemail.com:587

Intelligence


File Origin
# of uploads :
1
# of downloads :
34
Origin country :
FR FR
Mail intelligence
No data
Vendor Threat Intelligence
Detection:
MassLogger
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %AppData% subdirectories
Creating a process from a recently created file
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Creating a file in the %temp% subdirectories
Reading Telegram data
Reading critical registry keys
Moving a file to the %temp% subdirectory
Sending a custom TCP request
Deleting a recently created file
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Setting a global event handler for the keyboard
Unauthorized injection to a system process
Enabling autorun with Startup directory
Result
Threat name:
MassLogger RAT
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Contains functionality to detect sleep reduction / modifications
Contains functionality to inject code into remote processes
Creates files in alternative data streams (ADS)
Detected unpacking (changes PE section rights)
Detected unpacking (creates a PE file in dynamic memory)
Detected unpacking (overwrites its own PE header)
Drops VBS files to the startup folder
Maps a DLL or memory area into another process
May check the online IP address of the machine
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Queues an APC in another process (thread injection)
Sigma detected: Drops script at startup location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to steal Mail credentials (via file access)
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 255243 Sample: f5hb2BasFl.exe Startdate: 31/07/2020 Architecture: WINDOWS Score: 100 68 g.msn.com 2->68 88 Yara detected MassLogger RAT 2->88 90 Yara detected AntiVM_3 2->90 92 Sigma detected: Drops script at startup location 2->92 94 4 other signatures 2->94 12 f5hb2BasFl.exe 2->12         started        15 wscript.exe 1 2->15         started        signatures3 process4 signatures5 106 Contains functionality to inject code into remote processes 12->106 108 Writes to foreign memory regions 12->108 110 Allocates memory in foreign processes 12->110 112 2 other signatures 12->112 17 notepad.exe 5 12->17         started        21 hfsjrifske.exe 15->21         started        process6 file7 54 C:\Users\user\AppData\...\hfsjrifske.exe, PE32 17->54 dropped 56 C:\Users\...\hfsjrifske.exe:Zone.Identifier, ASCII 17->56 dropped 58 C:\Users\user\AppData\Roaming\...\web.vbs, ASCII 17->58 dropped 82 Creates files in alternative data streams (ADS) 17->82 84 Drops VBS files to the startup folder 17->84 23 hfsjrifske.exe 17->23         started        86 Maps a DLL or memory area into another process 21->86 26 hfsjrifske.exe 21->26         started        28 hfsjrifske.exe 3 21->28         started        signatures8 process9 signatures10 96 Detected unpacking (changes PE section rights) 23->96 98 Detected unpacking (creates a PE file in dynamic memory) 23->98 100 Detected unpacking (overwrites its own PE header) 23->100 102 3 other signatures 23->102 30 hfsjrifske.exe 15 6 23->30         started        34 hfsjrifske.exe 23->34         started        36 hfsjrifske.exe 26->36         started        process11 dnsIp12 76 mail.privateemail.com 198.54.122.60, 49738, 49751, 49753 NAMECHEAP-NETUS United States 30->76 78 elb097307-934924932.us-east-1.elb.amazonaws.com 23.21.203.116, 49735, 80 AMAZON-AESUS United States 30->78 80 3 other IPs or domains 30->80 114 Tries to steal Mail credentials (via file access) 30->114 116 Maps a DLL or memory area into another process 36->116 38 hfsjrifske.exe 36->38         started        40 hfsjrifske.exe 36->40         started        signatures13 process14 dnsIp15 43 hfsjrifske.exe 38->43         started        70 54.235.182.194, 49743, 80 AMAZON-AESUS United States 40->70 72 nagano-19599.herokussl.com 40->72 74 3 other IPs or domains 40->74 46 WerFault.exe 40->46         started        process16 signatures17 104 Maps a DLL or memory area into another process 43->104 48 hfsjrifske.exe 43->48         started        52 hfsjrifske.exe 43->52         started        process18 dnsIp19 62 184.73.222.237, 49752, 80 AMAZON-AESUS United States 48->62 64 nagano-19599.herokussl.com 48->64 66 3 other IPs or domains 48->66 60 C:\Users\user\AppData\Local\Temp\...\Log.txt, ASCII 48->60 dropped file20
Threat name:
Win32.Trojan.DataStealer
Status:
Malicious
First seen:
2020-07-31 08:37:04 UTC
AV detection:
20 of 31 (64.52%)
Threat level
  5/5
Result
Malware family:
masslogger
Score:
  10/10
Tags:
ransomware upx spyware stealer family:masslogger
Behaviour
NTFS ADS
Suspicious behavior: MapViewOfSection
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Drops startup file
Loads dropped DLL
Reads user/profile data of web browsers
UPX packed file
Executes dropped EXE
MassLogger log file
MassLogger
Threat name:
Malicious File
Score:
1.00

Yara Signatures


Rule name:masslogger_gcch
Author:govcert_ch
Rule name:win_masslogger_w0
Author:govcert_ch

File information


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

Web download

MassLogger

Executable exe 2323b4b4394b43e7b111f83e2f487238bdfa3ce99215309a7f86cac39be51235

(this sample)

  
Delivery method
Distributed via web download

Comments