MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 506381110aba86052e5ddfa191dffe2e533c8be5cd6f7104b96ba642aa038fed. 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
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 506381110aba86052e5ddfa191dffe2e533c8be5cd6f7104b96ba642aa038fed
SHA3-384 hash: eb2f3848d5bb065ed49a59818269d83cccee1ca2c76a6a1efe65a26afb50f00dc22430b6e824aa869a4a53bf5429f14a
SHA1 hash: 4f0231e5b38991ce5e68d11bab6dc5586e1f3b48
MD5 hash: c396c73997d8c1716df90f43959d23a7
humanhash: mockingbird-moon-summer-yellow
File name:shipping doc, INV+BL.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:452'096 bytes
First seen:2020-08-03 07:44:04 UTC
Last seen:2020-08-03 08:39:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 6144:OHAgbCa8sGQTRe2ip5zrIqudwC4c19VM49c6gN0OG:OHX8kTRe2ip3www19VMju
Threatray 5'135 similar samples on MalwareBazaar
TLSH C6A47C32AC53C039C4690A7494B85EC3A6393A343B558A5FB39B174C5F4267BBF2721E
Reporter abuse_ch
Tags:DHL exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: dhl.com
Sending IP: 37.49.224.193
From: DHL Express Service <no-reply@dhl.com>
Subject: DHL Shipment Prealert Arrival Notification victim-email
Attachment: shipping doc, INV+BL.zip (contains "shipping doc, INV+BL.exe")

Intelligence

File Origin
# of uploads :
2
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/37489/
Detection(s):
SecuriteInfo.com.Trojan.Packed2.42523.8106.32082.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/407645
Signature
.NET source code contains very large array initializations
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
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/506381110aba86052e5ddfa191dffe2e533c8be5cd6f7104b96ba642aa038fed/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-08-02 14:52:56 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kbryceikxkdakls536qzdx76fzjtzc7fzvxxcbfznotefkqdr7wq._file
Verdict:
malicious
Label(s):
netwirerc
Create hunting rule
Similar samples:
169e90fc957c42bef2af2bc472799472af795ceeb2bd945e633d5f589e7e6f56
Formbook
5c6d005bb7bd065341b432bf6a27117c76115e18ae10fd21906759d05d05f733
Formbook
635411fb8a81c1232977130d52f6643995799475f35d4d3ecf2c0b74c307c876
Formbook
7890ba83f1cbdd2e461231b4862c15ed80300d361715fecece651094de62bd85
Formbook
7abf73f6d63535a3770a681960124ee32f77d0305cfb82e80da13301829d5b25
Formbook
9047151fe524a34dffeacd46eba66b4b0a87beb7f3e513ba8e5c6ca367ccc505
Formbook
b3349406861e76bfb84f4757a646c3fe94eb5e1cd27abeeffa48aabb6c8fa4d5
Formbook
b43786f175549f7d8aba0d0213181d10a01a54ab6ac8256446b8f39de6022986
Formbook
da418cd645143899691fa8b036073aaa5320a1d6c855699494f4b9b2419fb12e
Formbook
e65997e20f521c8eee713623c45c9600a7a05629c85d73c9dd2bdf696f43e5de
Formbook
+ 5'125 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook persistence evasion
Link:
https://tria.ge/reports/200803-lsxwfpx1ya/
Behaviour
Suspicious use of FindShellTrayWindow
Modifies Internet Explorer settings
Suspicious use of SendNotifyMessage
System policy modification
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Loads dropped DLL
Reads user/profile data of web browsers
Executes dropped EXE
Adds policy Run key to start application
Formbook Payload
Formbook
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/506381110aba/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
AgentTesla
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/506381110aba86052e5ddfa191dffe2e533c8be5cd6f7104b96ba642aa038fed

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

Formbook

zip 670dad8ea526fa9054b34d85aa1b4f539e54ae75aba530b6bfb5b97a4ec08aaf

Formbook

Executable exe 506381110aba86052e5ddfa191dffe2e533c8be5cd6f7104b96ba642aa038fed

(this sample)

  
Dropped by
MD5 ce6459d89c946ba807ab4db4ef07c071
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 670dad8ea526fa9054b34d85aa1b4f539e54ae75aba530b6bfb5b97a4ec08aaf
Cape
Cape
https://www.capesandbox.com/analysis/37489/

Comments