MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6df08a0f239a7e606968d876ee7237a1f31c73d102a9acd701aaf2b83f49f4c8. 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: 9


Intelligence 9 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 6df08a0f239a7e606968d876ee7237a1f31c73d102a9acd701aaf2b83f49f4c8
SHA3-384 hash: 5c0553baed6e9bc2cd683fb95a35a0fc5c8f49850bd4d489d9d11b1e4aad0b2fc21915f768e5e472c32f3f45095bb880
SHA1 hash: 2e952383f0ab1d2efe9fd728013f633e76f77c5c
MD5 hash: 4dce6cd773fee29897d77b670c278cba
humanhash: salami-orange-nitrogen-papa
File name:proposal.xlsm
Download: download sample
Signature Formbook
Create hunting rule
File size:2'796'129 bytes
First seen:2021-02-22 06:37:28 UTC
Last seen:Never
File type:Excel file xlsm
MIME type:application/octet-stream
ssdeep 1536:FtvkfASXW/RMZEPcKvnlQtdYpVV2Z9rs0nIcjELcavxrz:LI9W/RQEPNvlxTsi0n9Kx
TLSH D7D54404F6432642C2EA817504B233F5B733A47B09925B863FB25B7C2CC5AF9A7D6E51
Reporter abuse_ch
Tags:FormBook xlsm


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: dedic-bds-714413.hosted-by-itldc.com
Sending IP: 82.118.21.193
From: Director's Office <info@betterpack.com>
Reply-To: <director@lilingroup.myvnc.com>
Subject: Re: Linkedin Business proposal
Attachment: proposal.xlsm

Office OLE Information

This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

MalwareBazaar was able to identify 26 sections in this file using oledump:

Section IDSection sizeSection name
A1668 bytesPROJECT
A2173 bytesPROJECTwm
A3740 bytesVBA/Module1
A4136701 bytesVBA/Module2
A5991 bytesVBA/Sheet1
A6991 bytesVBA/Sheet2
A7991 bytesVBA/Sheet3
A8991 bytesVBA/Sheet4
A9999 bytesVBA/ThisWorkbook
A104625 bytesVBA/_VBA_PROJECT
A112283 bytesVBA/__SRP_0
A12357 bytesVBA/__SRP_1
A13280 bytesVBA/__SRP_2
A14494 bytesVBA/__SRP_3
A15638 bytesVBA/dir
B176 bytesCompObj
B216209 bytesOle10Native
C176 bytesCompObj
C252937 bytesOle10Native
D1102 bytesCompObj
D262 bytesOle
D3256 bytesEquation Native

Intelligence

File Origin
# of uploads :
1
# of downloads :
90
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
6df08a0f239a7e606968d876ee7237a1f31c73d102a9acd701aaf2b83f49f4c8
Verdict:
Malicious activity
Analysis date:
2021-02-22 12:40:15 UTC
Tags:
macros ole-embedded macros-on-open exploit CVE-2017-11882
Link:
https://app.any.run/tasks/1bf01301-c797-47fe-bad7-ef1417c68831

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
File type:
application/vnd.ms-excel.sheet.macroEnabled.12
Has a screenshot:
False
Contains macros:
False
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/118183/
Detection(s):
SecuriteInfo.com.VBS.Agent-25.UNOFFICIAL
Create hunting rule

Sanesecurity.Badmacro.Xls.ObjResp.UNOFFICIAL
Create hunting rule

MiscreantPunch.EvilDoc.Exploit.2017-11882.M3.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Result
Verdict:
Malicious
File Type:
OOXML Excel File with Embedding Objects
Link:
https://app.docguard.net/6df08a0f239a7e606968d876ee7237a1f31c73d102a9acd701aaf2b83f49f4c8/results/dashboard
Result
Verdict:
MALICIOUS
Details
Macro with Startup Hook
Detected macro logic that will automatically execute on document open. Most malware contains some execution hook.
Base64 Encoded URL
Detected an ANSI or UNICODE http:// or https:// base64 encoded URL prefix.
Macro with DLL Reference
Detected macro logic that will load additional functionality from Dynamically Linked Libraries (DLLs). While not explicitly malicious, this is a common tactic for accessing APIs that are not otherwised exposed via Visual Basic for Applications (VBA).
Document With No Content
Document contains little or no semantic information.
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
expl.evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/613661
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Document contains an embedded macro with GUI obfuscation
Document contains an embedded VBA macro which may execute processes
Document contains an embedded VBA macro with suspicious strings
Document contains an embedded VBA with functions possibly related to ADO stream file operations
Document contains an embedded VBA with many string operations indicating source code obfuscation
Document exploit detected (creates forbidden files)
Document exploit detected (process start blacklist hit)
Found malware configuration
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Microsoft Office drops suspicious files
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Microsoft Office Product Spawning Windows Shell
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
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 355845 Sample: proposal.xlsm Startdate: 22/02/2021 Architecture: WINDOWS Score: 100 45 www.qbluedotpanowdmall.com 2->45 59 Found malware configuration 2->59 61 Malicious sample detected (through community Yara rule) 2->61 63 Multi AV Scanner detection for submitted file 2->63 65 13 other signatures 2->65 13 EXCEL.EXE 25 31 2->13         started        signatures3 process4 file5 41 C:\Users\user\Desktop\~$proposal.xlsm, data 13->41 dropped 79 Document exploit detected (creates forbidden files) 13->79 81 Document exploit detected (process start blacklist hit) 13->81 83 Microsoft Office drops suspicious files 13->83 17 cscript.exe 3 13->17         started        signatures6 process7 dnsIp8 43 alnasruae.serveirc.com 80.85.158.215, 443, 49743 CHELYABINSK-SIGNAL-ASRU Russian Federation 17->43 20 taskbar.exe 3 17->20         started        23 conhost.exe 17->23         started        process9 signatures10 67 Tries to detect virtualization through RDTSC time measurements 20->67 25 taskbar.exe 20->25         started        process11 signatures12 69 Modifies the context of a thread in another process (thread injection) 25->69 71 Maps a DLL or memory area into another process 25->71 73 Sample uses process hollowing technique 25->73 75 Queues an APC in another process (thread injection) 25->75 28 explorer.exe 25->28 injected process13 dnsIp14 47 www.foodhallhilversum.com 83.172.180.139, 49752, 80 NEDZONE-ASNL Netherlands 28->47 49 www.xn--hy1bj7gtvmh9a15t.com 121.254.178.252, 49753, 80 LGDACOMLGDACOMCorporationKR Korea Republic of 28->49 51 2 other IPs or domains 28->51 77 System process connects to network (likely due to code injection or exploit) 28->77 32 raserver.exe 28->32         started        35 autochk.exe 28->35         started        signatures15 process16 signatures17 53 Modifies the context of a thread in another process (thread injection) 32->53 55 Maps a DLL or memory area into another process 32->55 57 Tries to detect virtualization through RDTSC time measurements 32->57 37 cmd.exe 1 32->37         started        process18 process19 39 conhost.exe 37->39         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6df08a0f239a7e606968d876ee7237a1f31c73d102a9acd701aaf2b83f49f4c8/
Threat name:
Script-JS.Exploit.Bomber
Create hunting rule
Status:
Malicious
First seen:
2021-02-22 06:38:09 UTC
AV detection:
17 of 47 (36.17%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=nxyiudzdtj7ga2li3b3o44rxuhzry46raku2zvybvlzlqp2j6tea._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210222-nqxk8hdpvn/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Launches Equation Editor
Modifies Internet Explorer settings
NTFS ADS
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Enumerates physical storage devices
Suspicious use of SetThreadContext
Blocklisted process makes network request
Executes dropped EXE
Formbook Payload
Formbook
Process spawned unexpected child process
Malware Config
C2 Extraction:
http://www.foodhallhilversum.com/c2m8/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:Email_stealer_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Email in files like avemaria
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:Select_from_enumeration
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:UAC_bypass_bin_mem
Create hunting rule
Author:James_inthe_box
Description:UAC bypass in files like avemaria

File information

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

Malspam

Formbook

Excel file xlsm 6df08a0f239a7e606968d876ee7237a1f31c73d102a9acd701aaf2b83f49f4c8

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/118183/

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