MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cf5d63823cb7e280e555b94cba5aa1a5e8c0eb3c738f7e620dc2a923532f98de. 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 8 File information Yara Comments

SHA256 hash: cf5d63823cb7e280e555b94cba5aa1a5e8c0eb3c738f7e620dc2a923532f98de
SHA3-384 hash: 34e8023ca0ebcb0d9cbd0c375bf09cc63eea966f30af245ee2a221926c4b233532efd7c717aa91ecf62d8ed7920e3aff
SHA1 hash: 291bab40915a7c2d7277f3f1944e54a3c236eef2
MD5 hash: 421b08e81a183c1d7337128cba971fa2
humanhash: nevada-october-carbon-magazine
File name:SecuriteInfo.com.Trojan.Siggen9.58380.16060.15702
Download: download sample
Signature FormBook
File size:414'720 bytes
First seen:2020-08-01 19:33:04 UTC
Last seen:2020-08-02 07:34:54 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744
ssdeep 6144:TRqxZSrij/39uxo6zLYpycVe0dxpMOrWUcDF9alj/KbeSnrWC+RXn+Bj93:TRqFuKs+ycVjNSUcDzalCbeGGM
TLSH 0994D01683ECCA1BE1AE633BD5F2801447B95D4BE895EFCE8A04A5ED2897340DC153E7
Reporter @SecuriteInfoCom
Tags:FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
26
Origin country :
US US
Mail intelligence
No data
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Launching a process
Creating a file
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
Detected FormBook malware
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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)
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 virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 255683 Sample: SecuriteInfo.com.Trojan.Sig... Startdate: 01/08/2020 Architecture: WINDOWS Score: 100 49 Malicious sample detected (through community Yara rule) 2->49 51 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->51 53 Yara detected FormBook 2->53 55 2 other signatures 2->55 10 SecuriteInfo.com.Trojan.Siggen9.58380.16060.exe 1 2->10         started        process3 signatures4 69 Maps a DLL or memory area into another process 10->69 13 RegAsm.exe 10->13         started        process5 signatures6 71 Modifies the context of a thread in another process (thread injection) 13->71 73 Maps a DLL or memory area into another process 13->73 75 Sample uses process hollowing technique 13->75 77 2 other signatures 13->77 16 explorer.exe 3 6 13->16 injected process7 dnsIp8 43 www.avocadosinwonderland.com 50.87.144.42, 49746, 49747, 49748 UNIFIEDLAYER-AS-1US United States 16->43 45 www.marketverity.com 91.195.241.136, 49745, 80 SEDO-ASDE Germany 16->45 47 www.rentgo.info 104.27.144.205, 49749, 49750, 49751 CLOUDFLARENETUS United States 16->47 37 C:\Users\user\AppData\Local\...\-zja29l_r.exe, PE32 16->37 dropped 57 System process connects to network (likely due to code injection or exploit) 16->57 59 Benign windows process drops PE files 16->59 21 netsh.exe 1 17 16->21         started        25 -zja29l_r.exe 2 16->25         started        27 -zja29l_r.exe 1 16->27         started        file9 signatures10 process11 file12 39 C:\Users\user\AppData\...\891logrv.ini, data 21->39 dropped 41 C:\Users\user\AppData\...\891logri.ini, data 21->41 dropped 61 Detected FormBook malware 21->61 63 Tries to steal Mail credentials (via file access) 21->63 65 Tries to harvest and steal browser information (history, passwords, etc) 21->65 67 3 other signatures 21->67 29 cmd.exe 1 21->29         started        31 conhost.exe 25->31         started        33 conhost.exe 27->33         started        signatures13 process14 process15 35 conhost.exe 29->35         started       
Threat name:
ByteCode-MSIL.Spyware.Noon
Status:
Malicious
First seen:
2020-07-13 20:09:06 UTC
AV detection:
25 of 31 (80.65%)
Threat level
  2/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
rat evasion trojan spyware stealer family:formbook persistence
Behaviour
Suspicious use of FindShellTrayWindow
System policy modification
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious use of SendNotifyMessage
Enumerates system info in registry
Suspicious use of WriteProcessMemory
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Reads user/profile data of web browsers
Adds policy Run key to start application
Formbook Payload
Formbook

File information


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

Web download

FormBook

Executable exe cf5d63823cb7e280e555b94cba5aa1a5e8c0eb3c738f7e620dc2a923532f98de

(this sample)

  
Delivery method
Distributed via web download

Comments