MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dc7dcd0b09fa13bd6af193cac9a2b68892f0b51670b045a824806852f4205689. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dc7dcd0b09fa13bd6af193cac9a2b68892f0b51670b045a824806852f4205689
SHA3-384 hash: b9e7df6d7db0dcf02b2be542ab457cd133e76b19b3dd7d8d441b1c2e0e4335f2804c61ddc18d359eb931cdd42b96c537
SHA1 hash: 05bed9f19f9b031d68fab039123e530cdaab7821
MD5 hash: 4f2335eb190abf458a9d8abf33fe15b7
humanhash: edward-nebraska-vermont-muppet
File name:Payslip.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:351'232 bytes
First seen:2020-08-05 08:13:10 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:EHAgbCa8sGQTuHJOM52SKidP3Z6c7B9Aq:EHX8kTuF52yN3Z6cl
Threatray 2'291 similar samples on MalwareBazaar
TLSH 72749C392887D019C8794D3598789EC3B666B2693F45861E70EBA35C5F036AF3F4309E
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing unidentified malware:

HELO: server0.ihswt.com
Sending IP: 142.11.236.209
From: "Per Te Corporation" <sales@ihswt.com>
Subject: Payment Advice
Attachment: Payslip.rar (contains "Payslip.exe")

Intelligence

File Origin
# of uploads :
1
# of downloads :
72
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/39174/
Detection(s):
SecuriteInfo.com.Fareit-FVT4F2335EB190A.31731.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 the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/410519
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
Injects a PE file into a foreign processes
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
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 257522 Sample: Payslip.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 96 30 www.longbao360.com 2->30 34 Malicious sample detected (through community Yara rule) 2->34 36 Yara detected FormBook 2->36 38 .NET source code contains very large array initializations 2->38 40 Modifies the prolog of user mode functions (user mode inline hooks) 2->40 11 Payslip.exe 4 2->11         started        signatures3 process4 file5 28 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 11->28 dropped 48 Writes to foreign memory regions 11->48 50 Allocates memory in foreign processes 11->50 52 Injects a PE file into a foreign processes 11->52 15 AddInProcess32.exe 11->15         started        signatures6 process7 signatures8 54 Modifies the context of a thread in another process (thread injection) 15->54 56 Maps a DLL or memory area into another process 15->56 58 Sample uses process hollowing technique 15->58 60 2 other signatures 15->60 18 explorer.exe 15->18 injected process9 dnsIp10 32 www.fatthimble.com 18->32 21 WWAHost.exe 18->21         started        process11 signatures12 42 Modifies the context of a thread in another process (thread injection) 21->42 44 Maps a DLL or memory area into another process 21->44 46 Tries to detect virtualization through RDTSC time measurements 21->46 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/dc7dcd0b09fa13bd6af193cac9a2b68892f0b51670b045a824806852f4205689/
Threat name:
ByteCode-MSIL.Backdoor.Bladabhindi
Create hunting rule
Status:
Malicious
First seen:
2020-08-05 01:36:05 UTC
AV detection:
23 of 29 (79.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3r642cyj7ij322xrspfmtivwrcjpbniwocyelkbeqbuff5bak2eq._file
Verdict:
malicious
Similar samples:
3374d3d11eef1e8fc48019fccac4fb5475ce8fec60c5e019c64662723fd5c1b3
Formbook
4b83753be005d3668592559d6fe011fda590558f730140f6c303714ac8fe0d93
Formbook
538026aea095085f7a8cd260a783b5495592a90ed7df928d6db87b7e2a3b8675
Formbook
9a3f18b05ce5e0ad884dc95af226f584d483a91dd15cb895a0cce8b91fb2b314
Formbook
bc931053b524ad01013ebd0aeb020953b8822bd4614cdb311a6e4d0bebc74e36
Formbook
c9044f1992ec7d31ec219353ff146261dd95b6bc2aee20cdfc4e01f0e045651e
Formbook
cd88f1f0051fb232edba57fff3fc2b789e0b286ec9b938d8f31c3ef52c6848df
Formbook
e69790e910b1817bcfb714f20fda02b6e024babd3dfcea8fa982192928a5df93
Formbook
f01e05ea7a73c604ae68acbced809fa9a249818994aae64af13010b3ea82c892
Formbook
fc714509dc4c3d6f3e13028be7be8207b2377331266c8ce213c575e511f8d31f
Formbook
+ 2'281 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook persistence
Link:
https://tria.ge/reports/200805-egrlvhpf82/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Gathers network information
Suspicious use of SendNotifyMessage
System policy modification
Suspicious use of WriteProcessMemory
Modifies Internet Explorer settings
Drops file in Program Files directory
Suspicious use of SetThreadContext
Reads user/profile data of web browsers
Loads dropped DLL
Executes dropped EXE
Adds policy Run key to start application
Formbook Payload
Formbook
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/dc7dcd0b09fa13bd6af193cac9a2b68892f0b51670b045a824806852f4205689

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
Rule name:win_formbook_g0
Create hunting rule
Author:Slavo Greminger, SWITCH-CERT

File information

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

Malspam

Formbook

rar 05382dd84f4d5e325ebba414a3b8b4221e53c41e3158ba4354737060b03804f5

Formbook

Executable exe dc7dcd0b09fa13bd6af193cac9a2b68892f0b51670b045a824806852f4205689

(this sample)

  
Dropped by
MD5 93c270257da7a73f5044a5dabb96e33e
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/39174/
  
Dropped by
SHA256 05382dd84f4d5e325ebba414a3b8b4221e53c41e3158ba4354737060b03804f5

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