MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 5b3bb0f608bd9099e6e0d6dfc09cea354f25b1d97ab9d51328552b766122b108. 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: 15


Intelligence 15 IOCs YARA 4 File information Comments
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SHA256 hash: 5b3bb0f608bd9099e6e0d6dfc09cea354f25b1d97ab9d51328552b766122b108
SHA3-384 hash: a104995373e1ca0e5a061580c0afe64c10aef7d663632df002823e5887b8afb133f9b6dff12e95c699ff9a2e84d930a9
SHA1 hash: 08c5885381e5ebde511e94cdd9109c468fcbb486
MD5 hash: 17a3985d6c8ddc1af76baec7403b6797
humanhash: nevada-mirror-april-ten
File name:B1IXdIKQGOFrl5o.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:517'632 bytes
First seen:2021-11-29 20:00:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:1PpYcrq3cPcXFiSEMCYCRLBd18WN4KxwXUH:1PpYcrb0XFieJ2rWQl2kH
Threatray 12'317 similar samples on MalwareBazaar
TLSH T1EDB42310BBACCBFAC7BD4BB13065464862743F411814C65CFBDDB06E5AA3F4529296CB
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
223
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
B1IXdIKQGOFrl5o.exe
Verdict:
Malicious activity
Analysis date:
2021-11-29 20:46:41 UTC
Tags:
trojan formbook stealer
Link:
https://app.any.run/tasks/272ca226-464f-43d6-a9ca-c1176af01b4f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Сreating synchronization primitives
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file in the %temp% directory
Launching a process
Unauthorized injection to a recently created process
Creating a file
Launching cmd.exe command interpreter
Using the Windows Management Instrumentation requests
Setting browser functions hooks
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61a53182effcae2254f4c7b0/reports/c95aa4e3-2b2c-471f-858f-13acdb6076e9/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/e19ab2f9-ae5f-4886-b126-131a6364ab41
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/898236
Signature
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Self deletion via cmd delete
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 530713 Sample: B1IXdIKQGOFrl5o.exe Startdate: 29/11/2021 Architecture: WINDOWS Score: 100 45 canonicalizer.ucsuri.tcs 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 Multi AV Scanner detection for dropped file 2->51 53 7 other signatures 2->53 11 B1IXdIKQGOFrl5o.exe 7 2->11         started        signatures3 process4 file5 39 C:\Users\user\AppData\Roaming\mUQabO.exe, PE32 11->39 dropped 41 C:\Users\user\AppData\Local\...\tmp849C.tmp, XML 11->41 dropped 43 C:\Users\user\...\B1IXdIKQGOFrl5o.exe.log, ASCII 11->43 dropped 55 Uses schtasks.exe or at.exe to add and modify task schedules 11->55 57 Adds a directory exclusion to Windows Defender 11->57 59 Tries to detect virtualization through RDTSC time measurements 11->59 15 B1IXdIKQGOFrl5o.exe 11->15         started        18 powershell.exe 25 11->18         started        20 schtasks.exe 1 11->20         started        22 B1IXdIKQGOFrl5o.exe 11->22         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 24 explorer.exe 15->24 injected 26 conhost.exe 18->26         started        28 conhost.exe 20->28         started        process9 process10 30 cmmon32.exe 24->30         started        signatures11 61 Self deletion via cmd delete 30->61 63 Tries to detect virtualization through RDTSC time measurements 30->63 33 cmd.exe 1 30->33         started        35 explorer.exe 1 151 30->35         started        process12 process13 37 conhost.exe 33->37         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/5b3bb0f608bd9099e6e0d6dfc09cea354f25b1d97ab9d51328552b766122b108/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-11-29 20:01:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=lm53b5qixwijtzxa23p4bhhkgvhslmozpk45kezikuvxmyjcweea._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
10a4841b7d56afca3aad568e29fcd3c44f3a0d893aef62ee32471847be405797
Formbook
14642e431716be5f43044de68f915037e0358a401f59e490f5370cc5563a1a23
Formbook
2b61cfb00cc8a45fdae91c176c8e68be4ac7cefbe0fab5781e5fa44d2ec4ca9f
Formbook
359ecb05de93b2ccc31cc15d249ef69a564d2f2e63d925126a6d784ef224766b
Formbook
49609c0487ceeec0771547efd9277b01f494be83549bc0245330672ee962c50c
Formbook
4f6a9d2f8c26c5106123e3684d72d2624e58226f0c845a265cadf80e67b49842
Formbook
73bab1467e20985a16b6991800c45cde9334e5e4bab1ab26394d039f03915f2f
Formbook
9ea2af324c0b6ab6493a82c59ba4f2aa56d94c5bc830f0e2b5a8288dc63747d4
Formbook
d54e341578828a215bbe78db4f2dc64a5388d4ce3bc7d6488f7bafb8c6b02d1c
Formbook
+ 12'307 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:m2j4 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/211129-yrjr2scfek/
Behaviour
Creates scheduled task(s)
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
Suspicious use of SetThreadContext
Deletes itself
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.functioningpopulace.com/m2j4/
Unpacked files
SH256 hash:
109878b0e84bb1a1ca2de76a00382f62e1447d77641ada7720b2794441e7703f
MD5 hash:
bc81db5f83c30917edefdf74e171822a
SHA1 hash:
2ef0e4b85e1abca4566d9261ac55456270319e2e
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/156b2308-92ce-449f-b1b3-3af5157c4dad/
SH256 hash:
f3dad2ede816792e361b0767843cb69fe03ad2c09a5f45c734d3f28583a0b8ac
MD5 hash:
81d3e4a6c94830ef624fcdee3c8feb16
SHA1 hash:
abac601545b71c01aa536ab234a8cd0663680451
Link:
https://www.unpac.me/results/156b2308-92ce-449f-b1b3-3af5157c4dad/
SH256 hash:
b19104b568ca3ddccc2a8d3d10ecddb1ea240171e798dc3a486292cfa14b6365
MD5 hash:
7b0900da932f4ed9630d65b04422736d
SHA1 hash:
6fa340436e3a8e73ae2b3e911f861483183c68ef
Link:
https://www.unpac.me/results/156b2308-92ce-449f-b1b3-3af5157c4dad/
SH256 hash:
5b3bb0f608bd9099e6e0d6dfc09cea354f25b1d97ab9d51328552b766122b108
MD5 hash:
17a3985d6c8ddc1af76baec7403b6797
SHA1 hash:
08c5885381e5ebde511e94cdd9109c468fcbb486
Link:
https://www.unpac.me/results/156b2308-92ce-449f-b1b3-3af5157c4dad/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/5b3bb0f608bd/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/5b3bb0f608bd9099e6e0d6dfc09cea354f25b1d97ab9d51328552b766122b108

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

Formbook

Executable exe 5b3bb0f608bd9099e6e0d6dfc09cea354f25b1d97ab9d51328552b766122b108

(this sample)

  
Delivery method
Distributed via e-mail attachment

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