MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
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SHA256 hash: 8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8
SHA3-384 hash: 6f33674c55ec2930362a6aa19443c76e3cb2905c8271746bfe014b89285ab77b5dc7c9206a71ee13f8e42f3a8032fc32
SHA1 hash: 0a2faa6f7a6054b975374e048723d3e4eb352730
MD5 hash: e0681f6fd3b1fefac91e6d4f78ffc6a9
humanhash: black-alanine-mango-kitten
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:788'992 bytes
First seen:2022-03-21 13:25:46 UTC
Last seen:2022-03-21 15:04:59 UTC
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:sVUnKstGyaUdD2CyhIQRdXknrKWryXXPB9HNFCn4asNgTtdD7/XUr7upFEAjU2go:ZKsUyaV/upFRQpWcvtVjIY8
TLSH T10BF408BD715472AFC877C1318A945C64FA50A8FB630B4917E4931B9A9D0F8C7EF840BA
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
248
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/253614/
Detection(s):
SecuriteInfo.com.Heur.Variadic.A.226.1.10599.15494.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Creating a file
Launching cmd.exe command interpreter
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe update.exe
Link:
https://www.filescan.io/uploads/62387cf3b94fb38cb4c3a350/reports/e03dc15d-8528-48ee-b234-1ee88ac34309/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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/5df263da-176c-4025-9ba8-9a99b4e619c9
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/960788
Signature
.NET source code contains very large strings
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
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
PE file contains section with special chars
PE file has nameless sections
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Suspicious Add Scheduled 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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 593269 Sample: vbc.exe Startdate: 21/03/2022 Architecture: WINDOWS Score: 100 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Antivirus detection for URL or domain 2->42 44 12 other signatures 2->44 10 vbc.exe 6 2->10         started        process3 file4 32 C:\Users\user\AppData\...\xJOFvGHqzuW.exe, PE32 10->32 dropped 34 C:\Users\user\AppData\Local\...\tmp92E1.tmp, XML 10->34 dropped 36 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 10->36 dropped 52 Uses schtasks.exe or at.exe to add and modify task schedules 10->52 54 Writes to foreign memory regions 10->54 56 Injects a PE file into a foreign processes 10->56 58 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 10->58 14 RegSvcs.exe 10->14         started        17 RegSvcs.exe 10->17         started        19 schtasks.exe 1 10->19         started        signatures5 process6 signatures7 60 Modifies the context of a thread in another process (thread injection) 14->60 62 Maps a DLL or memory area into another process 14->62 64 Sample uses process hollowing technique 14->64 66 Queues an APC in another process (thread injection) 14->66 21 explorer.exe 14->21 injected 68 Tries to detect virtualization through RDTSC time measurements 17->68 23 conhost.exe 19->23         started        process8 process9 25 cmmon32.exe 21->25         started        signatures10 46 Modifies the context of a thread in another process (thread injection) 25->46 48 Maps a DLL or memory area into another process 25->48 50 Tries to detect virtualization through RDTSC time measurements 25->50 28 cmd.exe 1 25->28         started        process11 process12 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
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Status:
Malicious
First seen:
2022-03-21 13:24:38 UTC
File Type:
PE (.Net Exe)
Extracted files:
21
AV detection:
28 of 42 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=r62wofkwdh7o6iurig5uvbyrs4aameujqivvbzucknfcauofut4a._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:e3b2 loader rat suricata
Link:
https://tria.ge/reports/220321-qph4qscgbl/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Uses the VBS compiler for execution
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
47961333cfc58da6077f142c814eb29fd3255aa4aae376203343a54c405d4dbb
MD5 hash:
ec3aa8521ef8038bcd6159baea11e65a
SHA1 hash:
15ef4bbc7160dc228de0ffeb21440eb20473265d
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/1ea0e54d-324e-4782-b048-e4d0e3ee3f1f/
Parent samples :
98b2ac6e4cdb537c352e38576d8506017a03acd5ef9dc62ffe20e893b0f05a73
f024c838fba1619082aacb508ffec28e994d1a918b680d1ec2b7681ad3a46433
e1589588b95e03844e0f5ccae574e722d68351c867b8535cd3df9467d381cdbb
739e94a41234bd028fae27705c6d0ff5d8d9925068384bcdfe4cdecc1fb36e4f
8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
Link:
https://www.unpac.me/results/1ea0e54d-324e-4782-b048-e4d0e3ee3f1f/
SH256 hash:
a795d30f5441a26393b2939607ba11aadfa9e04222bb87dd7463904268a0a908
MD5 hash:
676e8dba5f8af9eb6cf11582fd93fdc7
SHA1 hash:
2b3e1b45575d2c8875a65b46e960842d020c5543
Link:
https://www.unpac.me/results/1ea0e54d-324e-4782-b048-e4d0e3ee3f1f/
SH256 hash:
8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8
MD5 hash:
e0681f6fd3b1fefac91e6d4f78ffc6a9
SHA1 hash:
0a2faa6f7a6054b975374e048723d3e4eb352730
Link:
https://www.unpac.me/results/1ea0e54d-324e-4782-b048-e4d0e3ee3f1f/
Malware family:
XLoader
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/8fb567155619/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/8fb567155619feef229141bb4a87119700061289822b50e682534a2051c5a4f8

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/253614/
  
URLhaus
https://urlhaus.abuse.ch/url/2109237/

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