MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c2d2663a4c8cf961eb6e47123054f1dd40a7c23bf663762b0f0fc827b6b44f7. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8c2d2663a4c8cf961eb6e47123054f1dd40a7c23bf663762b0f0fc827b6b44f7
SHA3-384 hash: 583b8171def22e6d677381d00f2dd7ea3afb8a9cdb36f8c2b7ed3b4798654f6632ef2d1066e58e17cfbddc34abcc3954
SHA1 hash: f431b3e905bd1a45e0b0856d31962f71d985a398
MD5 hash: cfd7c1f8740ca02f97a919d1ad537a1d
humanhash: speaker-floor-august-nitrogen
File name:terfdcv.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:907'264 bytes
First seen:2020-07-24 11:06:40 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:K8m4k7f5e0arUJ+mpU2H077df9U4h0y+6J6b1X4eLpy3Qm:KQ0f54OrUjLZ1XyCWA
Threatray 5'112 similar samples on MalwareBazaar
TLSH DA157C367A438039C52E0374A8BC5ED7A63E2A653781CA6F63DB031C9F4169F771624E
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
Malspam distributing Formbook:

HELO: gateway33.websitewelcome.com
Sending IP: 192.185.145.221
From: lebere@schmitz-soehne.fr
Subject: Request for Schmitz
Attachment: TERMS.xlsm

Formbook payload URL:
http://heliosphere.us/temp/terfdcv.exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/32183/
Detection(s):
Win.Malware.Formbook-7399661-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a custom TCP request
Creating a window
Creating a file in the %temp% directory
Creating a process from a recently created file
Launching a process
Launching cmd.exe command interpreter
Launching the default Windows debugger (dwwin.exe)
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
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/397316
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 250924 Sample: terfdcv.exe Startdate: 24/07/2020 Architecture: WINDOWS Score: 100 41 Multi AV Scanner detection for domain / URL 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 4 other signatures 2->47 10 terfdcv.exe 3 2->10         started        process3 file4 33 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->33 dropped 57 Writes to foreign memory regions 10->57 59 Allocates memory in foreign processes 10->59 61 Injects a PE file into a foreign processes 10->61 14 AddInProcess32.exe 10->14         started        17 WerFault.exe 28 10 10->17         started        signatures5 process6 file7 63 Modifies the context of a thread in another process (thread injection) 14->63 65 Maps a DLL or memory area into another process 14->65 67 Sample uses process hollowing technique 14->67 69 2 other signatures 14->69 20 explorer.exe 14->20 injected 31 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 17->31 dropped signatures8 process9 dnsIp10 35 www.regular8.info 162.0.231.94, 49723, 80 NAMECHEAP-NETUS Canada 20->35 37 www.ijwkh.com 20->37 39 www.553245.top 20->39 49 System process connects to network (likely due to code injection or exploit) 20->49 24 systray.exe 20->24         started        signatures11 process12 signatures13 51 Modifies the context of a thread in another process (thread injection) 24->51 53 Maps a DLL or memory area into another process 24->53 55 Tries to detect virtualization through RDTSC time measurements 24->55 27 cmd.exe 1 24->27         started        process14 process15 29 conhost.exe 27->29         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8c2d2663a4c8cf961eb6e47123054f1dd40a7c23bf663762b0f0fc827b6b44f7/
Threat name:
ByteCode-MSIL.Trojan.Kryptik
Create hunting rule
Status:
Malicious
First seen:
2020-07-24 10:34:26 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rqwsmy5ezdhzmhvw4rysgbkpdxkau7bdx5tdoyvq6d6ie63lit3q._file
Verdict:
malicious
Similar samples:
141db63f511b843acf5d8a10f095333482850ed727da867bf39b83694b963ae6
Formbook
2a267254b993ac07447ffa6e2085d2e93f6dafa334c53f65d109d92082d1c350
Formbook
399b70d269ec0e84b66d7de2183866331bff3dd2eff8f32b851927d5944c963a
Formbook
49a63eb1c6fd5d4b22396bb8a8397c3bf124c3f94d104bc2a7a304f4457b4526
Formbook
6612e640d15ed26414fc5c288b9bb7050db90517febb11d4b5145fb8d84441b9
Formbook
6678b91ffc7bf3cd0b4624d6f8a3a500d666fd023e43d79727ddd29bd5a7ac19
Formbook
83ef26bdf4b6b513417a97c8997aa2152bc0fb0f0af9d0b30cf6a46d4959ce38
Formbook
ad660d774f78137622d038976557c8782211dbfd39d2ff9a7a4bcc9279ba0f41
Formbook
dbdfc4a9100fa08d0bb6ca2879febbc5e0db4eca85168dfefb526b584976efaf
Formbook
e3a859708d3e54210dbd7aaf0a2a78e1a11e8e2b3dcd358f91c3aa5091b94bf0
Formbook
+ 5'102 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/200724-gywhgjnvae/
Behaviour
Modifies Internet Explorer settings
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious behavior: MapViewOfSection
System policy modification
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Program crash
Program crash
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Reads user/profile data of web browsers
Loads dropped DLL
Executes dropped EXE
Adds policy Run key to start application
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/8c2d2663a4c8cf961eb6e47123054f1dd40a7c23bf663762b0f0fc827b6b44f7

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

Excel file xlsm 24d8103f7221bdddb23e2e2b901aa35238ab8369eda3c50eb3459cc1c7fec56b

Formbook

Executable exe 8c2d2663a4c8cf961eb6e47123054f1dd40a7c23bf663762b0f0fc827b6b44f7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/418757/
  
Dropped by
MD5 f5035e891e7f264f431c8b5f28509e72
  
Dropped by
SHA256 24d8103f7221bdddb23e2e2b901aa35238ab8369eda3c50eb3459cc1c7fec56b
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/32183/

Comments