MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 95b8c1f748ebef3dcbad0fa3148d46d483d00620c3e56153e41fde8978daece9. 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: 6


Intelligence 6 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 95b8c1f748ebef3dcbad0fa3148d46d483d00620c3e56153e41fde8978daece9
SHA3-384 hash: 8064df85f2b1f3971f7904ddc2f651e9726def3199c7a21bbdcee3435bb8945f89d0bca11eb37d0376c75d4106760992
SHA1 hash: 553556c5f05919c1b926911608c538dd6972f8ab
MD5 hash: 351e3d2752f956dbdeb693bcd032bf10
humanhash: jig-september-idaho-asparagus
File name:FORM.xlsm
Download: download sample
Signature Formbook
Create hunting rule
File size:120'380 bytes
First seen:2020-07-28 14:29:17 UTC
Last seen:2020-07-28 15:49:03 UTC
File type:Excel file xlsm
MIME type:application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
ssdeep 3072:MeYVepuW3riUK34o/6AIFjRSa7XFlS+6cg2TgXeSU1l:9qA9rizojjVlUcBu+
TLSH 47C3126D7A94F901CA8DAAF1D33EC99C64757305D065E80B62F6B03C60C2E6C2E6395E
Reporter abuse_ch
Tags:FormBook xlsm


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: slot0.gitesis.com
Sending IP: 104.168.234.145
From: cavallo.antonio@tecsud.it
Subject: Preferred Options Requirement
Attachment: FORM.xlsm

FormBook payload URL:
http://jayantpanke.org/sql/uejedf.exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
85
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.43558065.1477.26686.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Creating a file
Creating a file in the %temp% directory
Launching a process
Launching cmd.exe command interpreter
Deleting a recently created file
Sending an HTTP GET request
Unauthorized injection to a recently created process by context flags manipulation
Creating a process from a recently created file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/400599
Signature
.NET source code contains very large array initializations
Document exploit detected (creates forbidden files)
Document exploit detected (drops PE files)
Document exploit detected (process start blacklist hit)
Drops PE files to the user root directory
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
Office process drops PE file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Executables Started in Suspicious Folder
Sigma detected: Execution in Non-Executable Folder
Sigma detected: MS Office Product Spawning Exe in User Dir
Sigma detected: Suspicious Program Location Process Starts
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 252651 Sample: FORM.xlsm Startdate: 29/07/2020 Architecture: WINDOWS Score: 100 44 www.huntershill.biz 2->44 46 g.msn.com 2->46 48 asf-ris-prod-neurope.northeurope.cloudapp.azure.com 2->48 56 Malicious sample detected (through community Yara rule) 2->56 58 Multi AV Scanner detection for dropped file 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 10 other signatures 2->62 12 EXCEL.EXE 32 35 2->12         started        17 wuapihost.exe 2->17         started        signatures3 process4 dnsIp5 54 jayantpanke.org 185.234.52.151, 49718, 80 MVPShttpswwwmvpsnetEU Ukraine 12->54 38 C:\Users\user\AppData\Local\...\uejedf[1].exe, PE32 12->38 dropped 40 C:\Users\Public\vpgtnndiz.exe, PE32 12->40 dropped 42 C:\Users\user\Desktop\~$FORM.xlsm, data 12->42 dropped 80 Document exploit detected (creates forbidden files) 12->80 82 Document exploit detected (process start blacklist hit) 12->82 19 vpgtnndiz.exe 4 12->19         started        file6 signatures7 process8 file9 36 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 19->36 dropped 64 Multi AV Scanner detection for dropped file 19->64 23 AddInProcess32.exe 19->23         started        signatures10 process11 signatures12 66 Modifies the context of a thread in another process (thread injection) 23->66 68 Maps a DLL or memory area into another process 23->68 70 Sample uses process hollowing technique 23->70 72 2 other signatures 23->72 26 explorer.exe 23->26 injected process13 dnsIp14 50 www.eventiedesideri.com 26->50 52 www.553245.top 26->52 29 help.exe 26->29         started        process15 signatures16 74 Modifies the context of a thread in another process (thread injection) 29->74 76 Maps a DLL or memory area into another process 29->76 78 Tries to detect virtualization through RDTSC time measurements 29->78 32 cmd.exe 1 29->32         started        process17 process18 34 conhost.exe 32->34         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/95b8c1f748ebef3dcbad0fa3148d46d483d00620c3e56153e41fde8978daece9/
Threat name:
Win32.Trojan.Tiggre
Create hunting rule
Status:
Malicious
First seen:
2020-07-28 14:31:05 UTC
AV detection:
13 of 29 (44.83%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=sw4md52i5pxt3s5nb6rrjdkg2sb5abraypswcu7ed7pis6g25tuq._file
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/200728-289z7pm53n/
Behaviour
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Suspicious use of FindShellTrayWindow
Suspicious behavior: MapViewOfSection
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious behavior: EnumeratesProcesses
Modifies Internet Explorer settings
Suspicious use of AdjustPrivilegeToken
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Checks processor information in registry
Enumerates system info in registry
Suspicious use of SetWindowsHookEx
Suspicious behavior: AddClipboardFormatListener
Suspicious use of WriteProcessMemory
Office loads VBA resources, possible macro or embedded object present
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Adds Run key to start application
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Executes dropped EXE
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Dropper
Score:
0.80
Link:
https://yomi.yoroi.company/submissions/95b8c1f748ebef3dcbad0fa3148d46d483d00620c3e56153e41fde8978daece9

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:SharedStrings
Create hunting rule
Author:Katie Kleemola
Description:Internal names found in LURK0/CCTV0 samples
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

Formbook

Excel file xlsm 95b8c1f748ebef3dcbad0fa3148d46d483d00620c3e56153e41fde8978daece9

(this sample)

Formbook

Executable exe 141db63f511b843acf5d8a10f095333482850ed727da867bf39b83694b963ae6

  
URLhaus
https://urlhaus.abuse.ch/url/420698/
  
Delivery method
Distributed via e-mail attachment
  
Dropping
SHA256 141db63f511b843acf5d8a10f095333482850ed727da867bf39b83694b963ae6
  
Dropping
MD5 78d6da2667f155372aff3f610930692f

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