MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bfa59865d3bcb7fced5c8ebdf1d690c0a4cb40edba4d22af0d5c4030e7f74777. 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 2 File information Comments

SHA256 hash: bfa59865d3bcb7fced5c8ebdf1d690c0a4cb40edba4d22af0d5c4030e7f74777
SHA3-384 hash: 35686b905014fd300b4bf032d7c0c15e28eb4c885dccab7e5a0c50dd7c06644f5c619eb3ced7a5763ec804314004ff18
SHA1 hash: 01bd9c5999bb1b9bcc9eb2f421df83dfb77b4bf3
MD5 hash: a84dfef9911c955f8972e0a27912e725
humanhash: seventeen-william-red-alabama
File name:ashleyzx.exe
Download: download sample
Signature Formbook
File size:832'512 bytes
First seen:2022-04-05 14:52:18 UTC
Last seen:2022-04-05 15:55:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'747 x AgentTesla, 19'638 x Formbook, 12'244 x SnakeKeylogger)
ssdeep 12288:VJc4FxQm/PFH1NPpElyaPnGWXbA8XpxgoGYUXTCAvSfs9YUPHyN+ruy+KVqR:nFxQmJ1NPOJPnHXbg9YmchUZxVq
Threatray 13'499 similar samples on MalwareBazaar
TLSH T12D05AE0DFAB6CA12E2A80B77C0D7590843B1A941E55EE71FBAC126E505033BB8DC765F
File icon (PE):PE icon
dhash icon 4af1f0e0e0f0d0b2 (18 x SnakeKeylogger, 13 x AgentTesla, 9 x Formbook)
Reporter pr0xylife
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
2
# of downloads :
241
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
D45136_2022-04-06_08_51_47.zip
Verdict:
Malicious activity
Analysis date:
2022-04-06 06:53:14 UTC
Tags:
exploit CVE-2017-11882 loader

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
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Launching a process
Сreating synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe greyware obfuscated packed remote.exe replace.exe
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Found malware configuration
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Self deletion via cmd delete
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 603388 Sample: ashleyzx.exe Startdate: 05/04/2022 Architecture: WINDOWS Score: 100 36 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->36 38 Found malware configuration 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 7 other signatures 2->42 10 ashleyzx.exe 3 2->10         started        process3 file4 28 C:\Users\user\AppData\...\ashleyzx.exe.log, ASCII 10->28 dropped 54 Tries to detect virtualization through RDTSC time measurements 10->54 14 ashleyzx.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Queues an APC in another process (thread injection) 14->60 17 explorer.exe 14->17 injected process8 dnsIp9 30 hosting-1a.mijndomein-ws.nl 34.240.216.169, 49780, 80 AMAZON-02US United States 17->30 32 www.mobileonie.com 17->32 34 www.fringwork.com 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 wlanext.exe 17->21         started        signatures10 process11 signatures12 46 Self deletion via cmd delete 21->46 48 Modifies the context of a thread in another process (thread injection) 21->48 50 Maps a DLL or memory area into another process 21->50 52 Tries to detect virtualization through RDTSC time measurements 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-04-05 14:53:08 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:dw4g rat spyware stealer suricata trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Formbook Payload
Formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
bfa59865d3bcb7fced5c8ebdf1d690c0a4cb40edba4d22af0d5c4030e7f74777
MD5 hash:
a84dfef9911c955f8972e0a27912e725
SHA1 hash:
01bd9c5999bb1b9bcc9eb2f421df83dfb77b4bf3
Malware family:
FormBook
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

Formbook

Executable exe bfa59865d3bcb7fced5c8ebdf1d690c0a4cb40edba4d22af0d5c4030e7f74777

(this sample)

  
Delivery method
Distributed via web download

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