MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879. 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: 7


Intelligence 7 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879
SHA3-384 hash: 054b7b0fca14b2745d7422d66723246ff01d18357f210259d686ad2745a05e5bc97d00fbc325d05080ce2a9172bff0fa
SHA1 hash: 981b3b749c6ded59613b742e38a3e30dc9405bb5
MD5 hash: c506af9c1ade9eea60e9ca44d8a1960d
humanhash: beer-diet-autumn-leopard
File name:invoice.doc
Download: download sample
Signature Formbook
Create hunting rule
File size:19'180 bytes
First seen:2020-10-05 04:30:00 UTC
Last seen:Never
File type:Word file doc
MIME type:application/vnd.openxmlformats-officedocument.wordprocessingml.document
ssdeep 384:/imtnAD/MjUA1vVC78OWcxvVKokT1pLbzHL4:/LVUA1W8u9C1Fzr4
TLSH C882CF32D5043533F6A242BE92AC8362F56D5103934AFCE37D51AADD02A0DCB1B669A7
Reporter vm001cn
Tags:doc FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
132
Origin country :
n/a
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Using the Windows Management Instrumentation requests
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
DNS request
Sending a custom TCP request
Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)
Launching a process by exploiting the app vulnerability
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/480984
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Compiles downloader code with a AMSI bypass
Creates processes via WMI
Document contains an embedded VBA with base64 encoded strings
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 submitted file
Powershell drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Dot net compiler compiles file from suspicious location
Sigma detected: Suspicious Csc.exe Source File Folder
Suspicious powershell command line found
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Very long command line found
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 292932 Sample: invoice.doc Startdate: 05/10/2020 Architecture: WINDOWS Score: 100 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 Yara detected FormBook 2->65 67 8 other signatures 2->67 10 powershell.exe 16 13 2->10         started        15 WINWORD.EXE 302 30 2->15         started        process3 dnsIp4 49 webtechxperts.com 172.67.222.196, 443, 49165 CLOUDFLARENETUS United States 10->49 43 C:\Users\user\AppData\Roaming\sddd43d.exe, PE32 10->43 dropped 45 C:\Users\user\AppData\...\gqiz-g_w.cmdline, UTF-8 10->45 dropped 47 C:\Users\user\AppData\Local\...\gqiz-g_w.0.cs, UTF-8 10->47 dropped 85 Compiles downloader code with a AMSI bypass 10->85 87 Powershell drops PE file 10->87 17 sddd43d.exe 5 10->17         started        21 csc.exe 3 10->21         started        file5 signatures6 process7 file8 37 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 17->37 dropped 39 C:\Users\user\AppData\Local\Temp\...\f.dll, PE32 17->39 dropped 69 Machine Learning detection for dropped file 17->69 71 Writes to foreign memory regions 17->71 73 Allocates memory in foreign processes 17->73 75 2 other signatures 17->75 23 AddInProcess32.exe 17->23         started        41 C:\Users\user\AppData\Local\...\gqiz-g_w.dll, PE32 21->41 dropped 26 cvtres.exe 21->26         started        signatures9 process10 signatures11 77 Modifies the context of a thread in another process (thread injection) 23->77 79 Maps a DLL or memory area into another process 23->79 81 Sample uses process hollowing technique 23->81 83 2 other signatures 23->83 28 explorer.exe 23->28 injected process12 dnsIp13 51 guiafisioterapia.com 162.214.89.15, 49166, 80 UNIFIEDLAYER-AS-1US United States 28->51 53 www.guiafisioterapia.com 28->53 89 System process connects to network (likely due to code injection or exploit) 28->89 32 help.exe 28->32         started        signatures14 process15 signatures16 55 Modifies the context of a thread in another process (thread injection) 32->55 57 Maps a DLL or memory area into another process 32->57 59 Tries to detect virtualization through RDTSC time measurements 32->59 35 cmd.exe 32->35         started        process17
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879/
Threat name:
Document-Word.Downloader.Obfuser
Create hunting rule
Status:
Malicious
First seen:
2020-10-05 02:35:54 UTC
AV detection:
18 of 48 (37.50%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3fqa77eua3lryyfx5mbwesbdauimholruhpfmpfhxc2x5arppb4q._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201005-gv41bdzjq2/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Checks processor information in registry
Enumerates system info in registry
Office loads VBA resources, possible macro or embedded object present
Drops file in System32 directory
Suspicious use of SetThreadContext
Loads dropped DLL
Blacklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Process spawned unexpected child process
Malware Config
C2 Extraction:
http://www.smartlinetech.com/r2y/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Eldorado
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/d9600ffc9406d71c60b7eb036248230510c3b971a1de563ca7b8b57e822f7879

File information

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

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