MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c581c0cb91f2bc8e043a9132e704adb5c36147bb4d1a60676bdeb0c8d3686beb. 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



FormBook


Vendor detections: 10


Intelligence 10 IOCs YARA File information Comments

SHA256 hash: c581c0cb91f2bc8e043a9132e704adb5c36147bb4d1a60676bdeb0c8d3686beb
SHA3-384 hash: 91d45429c360792740ba17c1437dcb7c04179e504552c60abf4862f11b4a95395380db677b9bea5db8b2f7e57c2ba541
SHA1 hash: ff7dd34feed09dc301dd5ce98dab17489f8415ff
MD5 hash: fdfbb1c2ed52c0d05691b86559a5c803
humanhash: california-iowa-autumn-winner
File name:PO200412STR73ETD2020.exe
Download: download sample
Signature FormBook
File size:766'976 bytes
First seen:2020-08-28 06:02:25 UTC
Last seen:2020-08-28 07:04:33 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:/5ywhgQFNdJtKfssbHaoCd5PaeE6EIU1X9Tlgrdm4Vz0RppppppppppppppppppX:/5ptu1LUd5PapTZzT
Threatray 2'246 similar samples on MalwareBazaar
TLSH 86F4F142E908A774EEA99B305A37C93503117D6CAD38D52D29EA7C8B3FBF7D25025813
Reporter abuse_ch
Tags:Endurance exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: qproxy1-pub.mail.unifiedlayer.com
Sending IP: 173.254.64.10
From: Bernardita Venegas <info@compliancemodel.com>
Reply-To: dl889l9@gmail.com
Subject: Re:urgent reply needed with pi for deposit.
Attachment: PO200412STR73ETD2020.rar (contains "PO200412STR73ETD2020.exe")

Intelligence


File Origin
# of uploads :
2
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Benign windows process drops PE files
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Detected FormBook malware
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Modifies the context of a thread in another process (thread injection)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 278989 Sample: PO200412STR73ETD2020.exe Startdate: 28/08/2020 Architecture: WINDOWS Score: 100 43 www.lewesdelawarerealestate.com 2->43 51 Malicious sample detected (through community Yara rule) 2->51 53 Multi AV Scanner detection for dropped file 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 6 other signatures 2->57 11 PO200412STR73ETD2020.exe 3 2->11         started        signatures3 process4 file5 41 C:\Users\...\PO200412STR73ETD2020.exe.log, ASCII 11->41 dropped 71 Tries to detect virtualization through RDTSC time measurements 11->71 73 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 11->73 15 PO200412STR73ETD2020.exe 11->15         started        signatures6 process7 signatures8 75 Modifies the context of a thread in another process (thread injection) 15->75 77 Maps a DLL or memory area into another process 15->77 79 Sample uses process hollowing technique 15->79 81 Queues an APC in another process (thread injection) 15->81 18 explorer.exe 4 6 15->18 injected process9 dnsIp10 45 kranche.com 78.128.60.12, 49753, 80 TELEPOINTBG Bulgaria 18->45 47 www.kranche.com 18->47 49 www.2070pe.com 18->49 35 C:\Users\user\AppData\...\k424axzxdndz.exe, PE32 18->35 dropped 59 System process connects to network (likely due to code injection or exploit) 18->59 61 Benign windows process drops PE files 18->61 23 wlanext.exe 1 17 18->23         started        27 k424axzxdndz.exe 2 18->27         started        29 k424axzxdndz.exe 2 18->29         started        file11 signatures12 process13 file14 37 C:\Users\user\AppData\...\LP1logrv.ini, data 23->37 dropped 39 C:\Users\user\AppData\...\LP1logri.ini, data 23->39 dropped 63 Detected FormBook malware 23->63 65 Tries to steal Mail credentials (via file access) 23->65 67 Tries to harvest and steal browser information (history, passwords, etc) 23->67 69 3 other signatures 23->69 31 cmd.exe 1 23->31         started        signatures15 process16 process17 33 conhost.exe 31->33         started       
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Status:
Malicious
First seen:
2020-08-28 06:04:06 UTC
AV detection:
24 of 28 (85.71%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.flycoz.com/te/
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Malspam

FormBook

Executable exe c581c0cb91f2bc8e043a9132e704adb5c36147bb4d1a60676bdeb0c8d3686beb

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments