MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 399b70d269ec0e84b66d7de2183866331bff3dd2eff8f32b851927d5944c963a. 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: 8


Intelligence 8 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 399b70d269ec0e84b66d7de2183866331bff3dd2eff8f32b851927d5944c963a
SHA3-384 hash: 019bd38dbd0b8530179fe0168f6638504ae53ecce9458946012b13a4e7d0a0a8cc592994993c24eb95a3001c22e2d5c6
SHA1 hash: 5aa9c71943a40e013fafd5b99f611f36f02014f4
MD5 hash: 9a8d6f3b3aa536444b3ac0c65ab5e52f
humanhash: avocado-delaware-shade-bravo
File name:Purchase Order.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:384'000 bytes
First seen:2020-08-05 08:07:00 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 6144:ZBZBCcWYvTvX7s9/WWQVj9hudQOaO0+qhf5klNaZVNmBnq3NsupD3F4l8l5bA+ja:ZBZf7GojUat+YklAxmBnM3mCl5cH/
Threatray 5'104 similar samples on MalwareBazaar
TLSH 9784112C04889E6AF976077F2C701543EE23C50F6222E66F7B7521C948BE64DBE50FA5
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing FormBook:

HELO: sme15.small-dns.com
Sending IP: 183.81.162.123
From: contact@pacificelevator.com
Subject: Re: PAYMENT TO BANK DETAILS (CONFIRM BANK )
Attachment: Purchase Order.zip (contains "Purchase Order.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
75
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/39163/
Detection(s):
SecuriteInfo.com.BackDoor.SpyBotNET.25.31570.28550.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Launching a process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410495
Signature
Detected FormBook malware
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Sample uses process hollowing technique
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 access)
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 257505 Sample: Purchase Order.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 37 Malicious sample detected (through community Yara rule) 2->37 39 Yara detected AntiVM_3 2->39 41 Yara detected FormBook 2->41 43 6 other signatures 2->43 8 Purchase Order.exe 3 2->8         started        process3 file4 29 C:\Users\user\...\Purchase Order.exe.log, ASCII 8->29 dropped 55 Injects a PE file into a foreign processes 8->55 12 Purchase Order.exe 8->12         started        15 Purchase Order.exe 8->15         started        signatures5 process6 signatures7 57 Modifies the context of a thread in another process (thread injection) 12->57 59 Maps a DLL or memory area into another process 12->59 61 Sample uses process hollowing technique 12->61 63 Queues an APC in another process (thread injection) 12->63 17 explorer.exe 12->17 injected process8 dnsIp9 31 www.86983044.com 154.93.199.173, 49754, 49755, 49756 DXTL-HKDXTLTseungKwanOServiceHK Seychelles 17->31 33 www.akbankdirekt-islem.com 17->33 35 www.4ty9wmdqr1zlu.schule 17->35 45 System process connects to network (likely due to code injection or exploit) 17->45 21 colorcpl.exe 17 17->21         started        signatures10 process11 file12 25 C:\Users\user\AppData\...\-85logrv.ini, data 21->25 dropped 27 C:\Users\user\AppData\...\-85logri.ini, data 21->27 dropped 47 Detected FormBook malware 21->47 49 Tries to steal Mail credentials (via file access) 21->49 51 Tries to harvest and steal browser information (history, passwords, etc) 21->51 53 3 other signatures 21->53 signatures13
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/399b70d269ec0e84b66d7de2183866331bff3dd2eff8f32b851927d5944c963a/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 08:08:08 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hgnxbutj5qhijntnpxrbqodggmn76pos574pgk4fdet5lfcmsy5a._file
Verdict:
malicious
Similar samples:
141db63f511b843acf5d8a10f095333482850ed727da867bf39b83694b963ae6
FormBook
2a267254b993ac07447ffa6e2085d2e93f6dafa334c53f65d109d92082d1c350
FormBook
49a63eb1c6fd5d4b22396bb8a8397c3bf124c3f94d104bc2a7a304f4457b4526
FormBook
6678b91ffc7bf3cd0b4624d6f8a3a500d666fd023e43d79727ddd29bd5a7ac19
FormBook
6f827b68129d30609057c2e6b36be05649fce91d6bc8ee3d3566ca5c6aba562b
FormBook
83ef26bdf4b6b513417a97c8997aa2152bc0fb0f0af9d0b30cf6a46d4959ce38
FormBook
8c2d2663a4c8cf961eb6e47123054f1dd40a7c23bf663762b0f0fc827b6b44f7
FormBook
e3a859708d3e54210dbd7aaf0a2a78e1a11e8e2b3dcd358f91c3aa5091b94bf0
FormBook
e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c
FormBook
f4ca965db7cfd5944b5d6902f391f91f7c3994973955f2af97a91ec146977cc4
FormBook
+ 5'094 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat spyware trojan stealer family:formbook
Link:
https://tria.ge/reports/200805-vhb6mj5v3e/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Modifies Internet Explorer settings
Suspicious behavior: MapViewOfSection
Suspicious use of SendNotifyMessage
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.45
Link:
https://yomi.yoroi.company/submissions/399b70d269ec0e84b66d7de2183866331bff3dd2eff8f32b851927d5944c963a

File information

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

Malspam

FormBook

zip 17962766b27448f3e06e04aec7c1bce339261045b385ebe5287bba8e9516973e

FormBook

Executable exe 399b70d269ec0e84b66d7de2183866331bff3dd2eff8f32b851927d5944c963a

(this sample)

  
Dropped by
MD5 b2e3e75548f5e231eb3242d3ba2f83eb
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39163/
  
Dropped by
SHA256 17962766b27448f3e06e04aec7c1bce339261045b385ebe5287bba8e9516973e

Comments