MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31fcd3d5d4db88d5742905ad8c2717d6c107b246ff4423745c3bbaf8f66e1a7a. 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: 16


Intelligence 16 IOCs YARA 2 File information Comments 1
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SHA256 hash: 31fcd3d5d4db88d5742905ad8c2717d6c107b246ff4423745c3bbaf8f66e1a7a
SHA3-384 hash: c19bebe64894c6a26f7add34116e3e1c0c243c9cb25929f33bc20b402d510a7c3d30a6bad32db3e3efbda7b4fd7d50da
SHA1 hash: 9d68ba6b2d5cc05cdbabb844b5caf1e65e53599c
MD5 hash: a98cf71171ec02471d5c9ccbda5f823a
humanhash: network-november-thirteen-texas
File name:a98cf71171ec02471d5c9ccbda5f823a
Download: download sample
Signature Formbook
Create hunting rule
File size:341'997 bytes
First seen:2022-02-25 07:03:48 UTC
Last seen:2022-02-26 07:53:21 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla)
ssdeep 6144:TxDSlyk/SQxz935OClJRN+0n4r2gcz1hDOq9OM+mVIK2:PIG2XXQ2d1FVOM+mC
Threatray 13'669 similar samples on MalwareBazaar
TLSH T1C674232625C572AFE8D1023092FBA711F7F7DF4412F018A7AFB15F7B58123AE5521162
File icon (PE):PE icon
dhash icon b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
238
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
install.exe
Verdict:
Malicious activity
Analysis date:
2022-02-26 07:52:01 UTC
Tags:
installer trojan formbook stealer
Link:
https://app.any.run/tasks/4b423ee5-42bc-4594-a3dd-74e6d6c14fc1

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/244622/
Detection(s):
SecuriteInfo.com.MemScan.Trojan.GenericKDZ.84301.19081.32629.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Сreating synchronization primitives
Launching a process
Launching cmd.exe command interpreter
Searching for synchronization primitives
Sending a custom TCP request
DNS request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Forced shutdown of a system process
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/62187f690cd58dbd92398946/reports/c4a5d303-28d3-45eb-ad42-a649b9648daf/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/07146505-ef3c-465a-be83-55795cc96efd
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/946247
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors)
Found malware configuration
Injects a PE file into a foreign processes
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 578729 Sample: T0S24Z2nuk Startdate: 25/02/2022 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 3 other signatures 2->51 11 T0S24Z2nuk.exe 18 2->11         started        process3 file4 33 C:\Users\user\AppData\Local\...\yqprceab.exe, PE32 11->33 dropped 14 yqprceab.exe 11->14         started        process5 signatures6 61 Multi AV Scanner detection for dropped file 14->61 63 Found evasive API chain (may stop execution after reading information in the PEB, e.g. number of processors) 14->63 65 Tries to detect virtualization through RDTSC time measurements 14->65 67 Injects a PE file into a foreign processes 14->67 17 yqprceab.exe 14->17         started        process7 signatures8 37 Modifies the context of a thread in another process (thread injection) 17->37 39 Maps a DLL or memory area into another process 17->39 41 Sample uses process hollowing technique 17->41 43 Queues an APC in another process (thread injection) 17->43 20 explorer.exe 17->20 injected process9 signatures10 53 Uses netsh to modify the Windows network and firewall settings 20->53 23 netsh.exe 20->23         started        process11 signatures12 55 Modifies the context of a thread in another process (thread injection) 23->55 57 Maps a DLL or memory area into another process 23->57 59 Tries to detect virtualization through RDTSC time measurements 23->59 26 explorer.exe 1 170 23->26         started        29 cmd.exe 1 23->29         started        process13 dnsIp14 35 192.168.2.1 unknown unknown 26->35 31 conhost.exe 29->31         started        process15
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/31fcd3d5d4db88d5742905ad8c2717d6c107b246ff4423745c3bbaf8f66e1a7a/
Threat name:
Win32.Trojan.NSISInject
Create hunting rule
Status:
Malicious
First seen:
2022-02-25 05:45:25 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=gh6nhvou3oenk5bjawwyyjyx23aqpmsg75ccg5c4ho5pr5todj5a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
0da36b7f7e4b44b640ab5769532fdd7599032ca2b1d6b57807ba48ad1fa76780
Formbook
2a4415721925c12ce8a80719697ffbda5daf88fe34804b0549bc5d5605790cdb
Formbook
5f8d69976e4d3c9b6508cd376dcab4971a605d8d1122952ad604f7b48d2ef1e1
Formbook
75e51d5e7662ad2c7ee23822ebf5246ce2d3257734ef87883f57bbcffe13c5d2
Formbook
8e2fa281cc72512de1fc53eb27a9c04a524ce87c3cdf5932931ea3dc463a459a
Formbook
9050768f69225078f05d535401510a5b361dd071430e40639e869c7247621908
Formbook
d6b928a4292c14dee552691c4955bdff07d038470ec1419c88a4018fb06bd399
Formbook
f80dd0bf7402bebd03d303c97c8dd3f921d3e923a2521f4a2af2e4bf3c288aa1
Formbook
+ 13'659 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:fsgg loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220225-hvysdagehr/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Loads dropped DLL
Executes dropped EXE
Xloader Payload
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
377a4c7ca0ed8847ad4c04f54c209851da37cdec2193742c81384f0f06710b67
MD5 hash:
eb737bf2188a177d755af8d88bf9d5ee
SHA1 hash:
ca424bb58639a1639d3d9c005d465209b975ad65
Link:
https://www.unpac.me/results/d0a594be-d951-49d1-a6c2-c197ff25e0e4/
SH256 hash:
420982b978072e666bca3e82142117102949c8d3adb535d7de128745cc9b605a
MD5 hash:
95502cdda1ba2c804a55359695b70fa3
SHA1 hash:
b4afaed5bc6fccb8108698df9853ab8fb086a5c0
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/d0a594be-d951-49d1-a6c2-c197ff25e0e4/
Parent samples :
c770def66ece0d6100ca50a3b54898be0c177e7d0baddd8803785571f83c1c1a
5f8d69976e4d3c9b6508cd376dcab4971a605d8d1122952ad604f7b48d2ef1e1
31fcd3d5d4db88d5742905ad8c2717d6c107b246ff4423745c3bbaf8f66e1a7a
SH256 hash:
31fcd3d5d4db88d5742905ad8c2717d6c107b246ff4423745c3bbaf8f66e1a7a
MD5 hash:
a98cf71171ec02471d5c9ccbda5f823a
SHA1 hash:
9d68ba6b2d5cc05cdbabb844b5caf1e65e53599c
Link:
https://www.unpac.me/results/d0a594be-d951-49d1-a6c2-c197ff25e0e4/
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/31fcd3d5d4db/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.18
Link:
https://yomi.yoroi.company/submissions/31fcd3d5d4db88d5742905ad8c2717d6c107b246ff4423745c3bbaf8f66e1a7a

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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.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 31fcd3d5d4db88d5742905ad8c2717d6c107b246ff4423745c3bbaf8f66e1a7a

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2059391/
Cape
Cape
https://www.capesandbox.com/analysis/244622/

Comments


Avatar
zbet commented on 2022-02-25 07:03:49 UTC

url : hxxp://192.3.247.150/pp/builder1.exe