MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a7bed76e3e3a297b0dd90fc1ab64bd6799c3dba188934f995b1a210781657280. 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 6 File information Comments
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SHA256 hash: a7bed76e3e3a297b0dd90fc1ab64bd6799c3dba188934f995b1a210781657280
SHA3-384 hash: ddd0a941af008e2bd18464ef8afe5902239a2e3fa5070f5790f1b3875ac251bffbf6800d5fd1e7adcbe463081cc5c444
SHA1 hash: ccd2fecf1e667866e0f8384f6ad768c5088c7432
MD5 hash: 1410232860344c31ec9196a17ad6189d
humanhash: winner-avocado-victor-kilo
File name:97103.xls
Download: download sample
Signature Formbook
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File size:334'848 bytes
First seen:2020-10-19 09:58:57 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/vnd.ms-excel
ssdeep 6144:Tk3hOdsylKlgryzc4bNhZF+E+W2kn24BCV0zvoHabGXxRkaRpZmqJQvwgmUBO0q2:D4k00HabGhWapLQPm2dqtqzVLKrcpGk9
TLSH 296412E376800E0AD83D97BD5A2B57415231FC92AEB3820EB766F70567727C0895329B
Reporter abuse_ch
Tags:FormBook xls


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: al.aligntech.live
Sending IP: 45.95.170.220
From: JKT SDN BHD <info@aligntech.live>
Reply-To: JKTSDN BHD <info@aligntech.live>
Subject: NEW ORDER
Attachment: 97103.xls

Formbook payload URL:
http://weeshoppi.com/wp-includes/ID3/g1/97103.jpg

Formbook C2:
http://www.crazyenergyguy.com/dmr/

Intelligence

File Origin
# of uploads :
1
# of downloads :
81
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Exploit.Siggen2.51269.28867.8331.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Using the Windows Management Instrumentation requests
Bypassing of proactive protection methods using Windows Management Instrumentation (WMI)
Launching a process by exploiting the app vulnerability
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
evad.troj
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/495175
Signature
.NET source code contains very large array initializations
Bypasses PowerShell execution policy
Creates an autostart registry key pointing to binary in C:\Windows
Creates processes via WMI
Downloads files with wrong headers with respect to MIME Content-Type
Drops PE files to the user root directory
Machine Learning detection for dropped file
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Office document tries to convince victim to disable security protection (e.g. to enable ActiveX or Macros)
Powershell drops PE file
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: Suspicious Program Location Process Starts
Suspicious powershell command line found
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 300041 Sample: 97103.xls Startdate: 19/10/2020 Architecture: WINDOWS Score: 100 46 Multi AV Scanner detection for domain / URL 2->46 48 Malicious sample detected (through community Yara rule) 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 10 other signatures 2->52 8 powershell.exe 14 21 2->8         started        13 pcalua.exe 1 2->13         started        15 EXCEL.EXE 35 25 2->15         started        17 pcalua.exe 1 1 2->17         started        process3 dnsIp4 44 weeshoppi.com 207.180.212.51, 49712, 80 CONTABODE Germany 8->44 42 C:\Users\Public\Documents\jbnsdwj.exe, PE32 8->42 dropped 60 Powershell drops PE file 8->60 19 jbnsdwj.exe 8 8->19         started        23 conhost.exe 8->23         started        25 hdhnij.exe 13->25         started        file5 signatures6 process7 file8 36 C:\Users\user\hdhnij.exe, PE32 19->36 dropped 38 C:\Users\user\AppData\Local\Temp\...\Xxl.dll, PE32 19->38 dropped 40 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 19->40 dropped 54 Machine Learning detection for dropped file 19->54 56 Drops PE files to the user root directory 19->56 58 Tries to detect virtualization through RDTSC time measurements 19->58 27 cmd.exe 1 19->27         started        29 hdhnij.exe 19->29         started        signatures9 process10 process11 31 reg.exe 1 1 27->31         started        34 conhost.exe 27->34         started        signatures12 62 Creates an autostart registry key pointing to binary in C:\Windows 31->62
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a7bed76e3e3a297b0dd90fc1ab64bd6799c3dba188934f995b1a210781657280/
Threat name:
Script-Macro.Downloader.Powdow
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Status:
Malicious
First seen:
2020-10-19 04:57:37 UTC
AV detection:
17 of 29 (58.62%)
Threat level:
  3/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=u67no3r6hiuxwdozb7a2wzf5m6m4hw5brcju7gk3diqqpalfokaa._file
Result
Malware family:
formbook
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Score:
  10/10
Tags:
rat persistence trojan spyware stealer family:formbook
Link:
https://tria.ge/reports/201019-k95mzfng1j/
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
Program crash
Drops file in System32 directory
Suspicious use of SetThreadContext
Adds Run key to start application
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.crazyenergyguy.com/dmr/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/a7bed76e3e3a297b0dd90fc1ab64bd6799c3dba188934f995b1a210781657280

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:IPPort_combo_mem
Create hunting rule
Author:James_inthe_box
Description:IP and port combo
Rule name:PowerShell_in_Word_Doc
Create hunting rule
Author:Florian Roth
Description:Detects a powershell and bypass keyword in a Word document
Reference:Internal Research - ME
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 xls a7bed76e3e3a297b0dd90fc1ab64bd6799c3dba188934f995b1a210781657280

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/716992/
  
Delivery method
Distributed via e-mail attachment

Comments