MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ea4ff2f24588108641954f72800aabab7348ccc64d86f8293dd23cfc45f5faa1. 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: 10


Intelligence 10 IOCs YARA 5 File information Comments
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SHA256 hash: ea4ff2f24588108641954f72800aabab7348ccc64d86f8293dd23cfc45f5faa1
SHA3-384 hash: b6802c1c2e1ca44468c640eb0f673ba7df7dc12563b96fc4f195e1973c23db6a79ccb8ea685ab148b1476e55ec73784b
SHA1 hash: e258c7782240346e9a3e9897bd1629bbd40dbd15
MD5 hash: 77cd3eac0feb00d232d794c3880b9e91
humanhash: zebra-india-comet-shade
File name:vbc.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'225'728 bytes
First seen:2022-05-19 14:21:32 UTC
Last seen:2022-05-19 15:07:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:8/H7YbIqYVAO30t6w0o7UhbrfNvyFqOVcyHGVzbuyb2R/slQPYGp8z:8/H7YbIqYVAO30t6w0ogrTOhHSmybU
TLSH T16445BF0176A5CA64E1BF3B32F3E624141FFEB5A31960CB8D554A23864D66643DC0BB3B
TrID 61.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.0% (.SCR) Windows screen saver (13101/52/3)
8.8% (.EXE) Win64 Executable (generic) (10523/12/4)
5.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.2% (.EXE) Win16 NE executable (generic) (5038/12/1)
Reporter pr0xylife
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
282
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
vbc.exe
Verdict:
Suspicious activity
Analysis date:
2022-05-19 23:41:46 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a2696b9e-9ef4-4482-81a6-d6c650b12bdd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/272597/
Detection(s):
SecuriteInfo.com.W32.MSIL_Kryptik.GOV.genEldorado.25522.17845.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Adding an access-denied ACE
Launching a process
Сreating synchronization primitives
Searching for synchronization primitives
Creating a file
Launching cmd.exe command interpreter
DNS request
Sending an HTTP GET request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe expand.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/628652a13baea5a8c043a212/reports/fd256bd2-9c46-4cdc-bfc9-666915961724/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/36b5d48f-e049-4fea-b993-5c4f148af8ba
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/997897
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 630398 Sample: vbc.exe Startdate: 19/05/2022 Architecture: WINDOWS Score: 100 41 www.freerenoadvice.com 2->41 43 www.quantumlab5.com 2->43 47 Snort IDS alert for network traffic 2->47 49 Found malware configuration 2->49 51 Malicious sample detected (through community Yara rule) 2->51 53 8 other signatures 2->53 11 vbc.exe 1 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\Local\...\vbc.exe.log, ASCII 11->33 dropped 14 RMActivate.exe 11->14         started        process6 signatures7 65 Modifies the context of a thread in another process (thread injection) 14->65 67 Maps a DLL or memory area into another process 14->67 69 Sample uses process hollowing technique 14->69 71 2 other signatures 14->71 17 explorer.exe 14->17 injected process8 dnsIp9 35 www.eswpu.com 156.226.196.242, 49757, 80 XIAOZHIYUN1-AS-APICIDCNETWORKUS Seychelles 17->35 37 www.topings33.com 162.0.230.89, 49763, 80 NAMECHEAP-NETUS Canada 17->37 39 2 other IPs or domains 17->39 45 System process connects to network (likely due to code injection or exploit) 17->45 21 explorer.exe 1 12 17->21         started        signatures10 process11 signatures12 55 Tries to steal Mail credentials (via file / registry access) 21->55 57 Tries to harvest and steal browser information (history, passwords, etc) 21->57 59 Modifies the context of a thread in another process (thread injection) 21->59 61 2 other signatures 21->61 24 cmd.exe 2 21->24         started        27 cmd.exe 1 21->27         started        process13 signatures14 63 Tries to harvest and steal browser information (history, passwords, etc) 24->63 29 conhost.exe 24->29         started        31 conhost.exe 27->31         started        process15
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ea4ff2f24588108641954f72800aabab7348ccc64d86f8293dd23cfc45f5faa1/
Threat name:
ByteCode-MSIL.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2022-05-19 14:22:09 UTC
File Type:
PE (.Net Exe)
Extracted files:
25
AV detection:
15 of 26 (57.69%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=5jh7f4sfraiimqmvj5ziacvlvnzurtggjwdpqkj52i6pyrpv7kqq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:formbook family:xloader campaign:ud5f coreentity loader persistence rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220519-rpjkyabceq/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Adds Run key to start application
Reads user/profile data of web browsers
Uses the VBS compiler for execution
Xloader Payload
CoreEntity .NET Packer
Formbook
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
Unpacked files
SH256 hash:
ea4ff2f24588108641954f72800aabab7348ccc64d86f8293dd23cfc45f5faa1
MD5 hash:
77cd3eac0feb00d232d794c3880b9e91
SHA1 hash:
e258c7782240346e9a3e9897bd1629bbd40dbd15
Link:
https://www.unpac.me/results/7a07f77e-5332-4482-8f24-b0eddd4904d4/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.38
Link:
https://yomi.yoroi.company/submissions/ea4ff2f24588108641954f72800aabab7348ccc64d86f8293dd23cfc45f5faa1

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
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.

Cape
Cape
https://www.capesandbox.com/analysis/272597/

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