MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 27b55c8a94eb835f7ef194183f088415ac4e75348609465a1393043ab6161631. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 27b55c8a94eb835f7ef194183f088415ac4e75348609465a1393043ab6161631
SHA3-384 hash: 8b1153937be961df24ac721ee7e1f1dd28f272224434c2d08b01799d76aa15872eceb501bcdf1e66adbfc8d0cd340de4
SHA1 hash: 17d42408e24effdb365e59105f5ba080ad98c609
MD5 hash: 017c86f8f1607d55e270cdd1cce5864c
humanhash: uniform-orange-december-echo
File name:017c86f8f1607d55e270cdd1cce5864c.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:316'928 bytes
First seen:2021-01-09 09:01:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 6144:9PaeWHImXI74HSKinedli/Z6SZtlbK1n+nXgZlN:9Se6bxHVQejiQ8BAnKXgD
Threatray 4 similar samples on MalwareBazaar
TLSH B26412BAF50EA88FC9683771888EAF9C87F060728A17C503EC4D5B291D543E497641BF
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
327
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
017c86f8f1607d55e270cdd1cce5864c.exe
Verdict:
No threats detected
Analysis date:
2021-01-09 09:03:03 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/f989555f-e28f-4e8f-afcf-b9282eed8870

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
StormKitty
Create hunting rule
Link:
https://www.capesandbox.com/analysis/111108/
Detection(s):
Win.Packed.Bulz-9769773-0
Create hunting rule

Win.Packed.Bulz-9769834-0
Create hunting rule

Win.Malware.Bulz-9778250-0
Create hunting rule

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

Result
Verdict:
Malware
Maliciousness:

Behaviour
Using the Windows Management Instrumentation requests
Enabling the 'hidden' option for analyzed file
DNS request
Sending a custom TCP request
Creating a file
Enabling the 'hidden' option for recently created files
Sending a UDP request
Creating a file in the %temp% directory
Deleting a recently created file
Reading critical registry keys
Creating a window
Running batch commands
Launching a process
Sending an HTTP GET request
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
Stealing user critical data
Launching a tool to kill processes
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
StormKitty
Create hunting rule
Detection:
malicious
Classification:
rans.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/577250
Signature
.NET source code contains very large array initializations
Antivirus / Scanner detection for submitted sample
May check the online IP address of the machine
Modifies existing user documents (likely ransomware behavior)
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 browser information (history, passwords, etc)
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)
Yara detected StormKitty Stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 337676 Sample: inrfzFzDHR.exe Startdate: 09/01/2021 Architecture: WINDOWS Score: 100 51 Antivirus / Scanner detection for submitted sample 2->51 53 Sigma detected: Capture Wi-Fi password 2->53 55 Multi AV Scanner detection for dropped file 2->55 57 7 other signatures 2->57 7 inrfzFzDHR.exe 14 163 2->7         started        process3 dnsIp4 45 raw.githubusercontent.com 7->45 47 202.200.1.0.in-addr.arpa 7->47 49 6 other IPs or domains 7->49 37 C:\Users\user\Desktop\AnonFileApi.dll, PE32 7->37 dropped 39 C:\Users\user\AppData\...\ZIPXYXWIOY.png, ASCII 7->39 dropped 41 C:\Users\user\AppData\...behaviorgraphRXZDKKVDB.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 3 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/27b55c8a94eb835f7ef194183f088415ac4e75348609465a1393043ab6161631/
Threat name:
ByteCode-MSIL.Trojan.Masson
Create hunting rule
Status:
Malicious
First seen:
2020-12-29 03:20:50 UTC
AV detection:
26 of 46 (56.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=e62vzcuu5obv67xrsqmd6ceecwwe45juqyeumwqtsmcdvnqwcyyq._file
Verdict:
suspicious
Similar samples:
3729cc0e9183d4e4e6e7c9b82311538cc4357e35f817c32791131cc62a32ae1a
Formbook
417d90bf7d85a12dd9b199f97a0f7315532a71e0c09c124d50258dda532e0b20
Formbook
63c4e17fa9b6d87a9f4b68b854cae50e95f8de2a86929fecb8f34af0d15798e7
Formbook
87bcf35d7135ecbc956554098f411ef9bf7d20d0a7905442d2417f422d7479b3
Formbook
Result
Malware family:
n/a
Score:
  8/10
Tags:
spyware vmprotect
Link:
https://tria.ge/reports/210109-7wrstgb9lj/
Behaviour
Delays execution with timeout.exe
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Looks up external IP address via web service
Deletes itself
Reads user/profile data of web browsers
VMProtect packed file
Unpacked files
SH256 hash:
27b55c8a94eb835f7ef194183f088415ac4e75348609465a1393043ab6161631
MD5 hash:
017c86f8f1607d55e270cdd1cce5864c
SHA1 hash:
17d42408e24effdb365e59105f5ba080ad98c609
Link:
https://www.unpac.me/results/3af9b796-0347-46aa-9149-64631767c707/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
QQpass
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/27b55c8a94eb835f7ef194183f088415ac4e75348609465a1393043ab6161631

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:INDICATOR_EXE_Packed_ConfuserEx
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ConfuserEx Mod
Rule name:MALWARE_Win_StormKitty
Create hunting rule
Author:ditekSHen
Description:Detects StormKitty infostealer

File information

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

Web download

Formbook

Executable exe 27b55c8a94eb835f7ef194183f088415ac4e75348609465a1393043ab6161631

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/951330/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/111108/

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