MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 87bcf35d7135ecbc956554098f411ef9bf7d20d0a7905442d2417f422d7479b3. 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: 5


Intelligence 5 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 87bcf35d7135ecbc956554098f411ef9bf7d20d0a7905442d2417f422d7479b3
SHA3-384 hash: efb0f51d1f198e5931f368446e8700d7ade09ecd1e68b202b81c0f4106ab17428dbf08e100e85565539585cc890c0de0
SHA1 hash: c2ed5ff2cd60e7e6193d8f934fce03ceab2f70e2
MD5 hash: 0da1abdccef71f074faeb911cafb3a9f
humanhash: maine-mars-beer-eleven
File name:SecuriteInfo.com.Variant.Bulz.82555.20565.5900
Download: download sample
Signature Formbook
Create hunting rule
File size:314'880 bytes
First seen:2020-09-26 23:35:00 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 6144:orRt89VZUMTllWjhwuGFXY5mJwpT6jlpVDpPPAu6AkHrW5Tp3PakxMJdE2:orXsZ7TP04I5mCpWjbAu5kQdyk6
Threatray 1 similar samples on MalwareBazaar
TLSH 4A641208F258969EFD315EB4CE496DF56328A1195762FA9B07CB31B18A7CF923CC6013
Reporter SecuriteInfoCom
Tags:FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
192
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/66167/
Detection(s):
SecuriteInfo.com.Variant.Bulz.82555.20565.5900.UNOFFICIAL
Create hunting rule

PUA.Win.Packed.ConfuserEx-6582917-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Reading critical registry keys
Delayed writing of the file
Running batch commands
Creating a window
Launching a process
Launching the process to change network settings
Creating a file in the Windows subdirectories
Moving a recently created file
Creating a process with a hidden window
Searching for the window
Using the Windows Management Instrumentation requests
Sending a UDP request
Enabling the 'hidden' option for analyzed file
DNS request
Sending an HTTP GET request
Sending a custom TCP request
Creating a file
Enabling the 'hidden' option for recently created files
Creating a file in the %temp% directory
Deleting a recently created file
Stealing user critical data
Launching a tool to kill processes
Sending an HTTP GET request to an infection source
Result
Threat name:
Unknown
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/475913
Signature
.NET source code contains very large array initializations
Antivirus detection for URL or domain
May check the online IP address of the machine
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Capture Wi-Fi password
Tries to harvest and steal WLAN passwords
Tries to steal Mail credentials (via file access)
Uses netsh to modify the Windows network and firewall settings
Uses the Telegram API (likely for C&C communication)
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 290406 Sample: SecuriteInfo.com.Variant.Bu... Startdate: 27/09/2020 Architecture: WINDOWS Score: 100 51 Multi AV Scanner detection for domain / URL 2->51 53 Antivirus detection for URL or domain 2->53 55 Sigma detected: Capture Wi-Fi password 2->55 57 7 other signatures 2->57 7 SecuriteInfo.com.Variant.Bulz.82555.20565.exe 14 122 2->7         started        process3 dnsIp4 45 raw.githubusercontent.com 7->45 47 121.205.6.0.in-addr.arpa 7->47 49 7 other IPs or domains 7->49 37 C:\Users\user\Desktop\AnonFileApi.dll, PE32 7->37 dropped 39 C:\Users\user\AppData\...behaviorgraphIGIYTFFYT.docx, ASCII 7->39 dropped 41 C:\Users\user\AppData\...behaviorgraphIGIYTFFYT.xlsx, ASCII 7->41 dropped 43 2 other files (1 malicious) 7->43 dropped 59 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 7->59 61 Tries to steal Mail credentials (via file access) 7->61 63 Queries sensitive Plug and Play Device Information (via WMI, Win32_PnPEntity, often done to detect virtual machines) 7->63 65 2 other signatures 7->65 12 cmd.exe 1 7->12         started        15 cmd.exe 1 7->15         started        17 cmd.exe 1 7->17         started        file5 signatures6 process7 signatures8 67 Tries to harvest and steal WLAN passwords 12->67 19 netsh.exe 3 12->19         started        21 conhost.exe 12->21         started        33 2 other processes 12->33 23 taskkill.exe 1 15->23         started        25 conhost.exe 15->25         started        35 2 other processes 15->35 27 netsh.exe 3 17->27         started        29 conhost.exe 17->29         started        31 chcp.com 1 17->31         started        process9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/87bcf35d7135ecbc956554098f411ef9bf7d20d0a7905442d2417f422d7479b3/
Threat name:
Win64.Trojan.Ymacco
Create hunting rule
Status:
Malicious
First seen:
2020-09-26 23:36:06 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q66pgxlrgxwlzflfkqey6qi67g7x2igqu6ifiqwsif7uellupgzq._file
Verdict:
suspicious
Similar samples:
417d90bf7d85a12dd9b199f97a0f7315532a71e0c09c124d50258dda532e0b20
Formbook
Result
Malware family:
n/a
Score:
  8/10
Tags:
vmprotect spyware
Link:
https://tria.ge/reports/200926-hjwemmemjs/
Behaviour
Delays execution with timeout.exe
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Checks processor information in registry
Looks up external IP address via web service
Deletes itself
Reads user/profile data of web browsers
VMProtect packed file
Unpacked files
SH256 hash:
87bcf35d7135ecbc956554098f411ef9bf7d20d0a7905442d2417f422d7479b3
MD5 hash:
0da1abdccef71f074faeb911cafb3a9f
SHA1 hash:
c2ed5ff2cd60e7e6193d8f934fce03ceab2f70e2
Link:
https://www.unpac.me/results/f43df92d-68e9-4095-b3d8-ab1a1f46f88b/
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Web download

Formbook

Executable exe 87bcf35d7135ecbc956554098f411ef9bf7d20d0a7905442d2417f422d7479b3

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/66167/
  
URLhaus
https://urlhaus.abuse.ch/url/613738/
  
Delivery method
Distributed via web download

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