MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c944efe6f7ebc5786e8db1b3a3b4296daacce868fe45318adf01617050e4ea9e. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments 1

SHA256 hash: c944efe6f7ebc5786e8db1b3a3b4296daacce868fe45318adf01617050e4ea9e
SHA3-384 hash: 38c859c04e506ef1727b6a86ebdf71e5075acc41323bde209c8960080345dc8f3c418b26ecf7e9198d59d93dccb0b2cc
SHA1 hash: 9fad91612889296a90686ce98611f00ee17d0c15
MD5 hash: 41b8a1bc6618194d120ff13a682bdf40
humanhash: charlie-potato-undress-avocado
File name:41b8a1bc6618194d120ff13a682bdf40
Download: download sample
Signature Formbook
File size:769'024 bytes
First seen:2022-04-11 18:07:25 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:F802bAVp+Yq9zxZaXdtjMisqeEEfz+TF01ULh/ByASVzce257UvOyYYAlQ2IOVnZ:kCdSvq8p8/JSVzB2mnYLlcOVnoQSUD+w
Threatray 14'748 similar samples on MalwareBazaar
TLSH T10DF40254D29C6ED6E41E43FC9870B80427BBB32A556DEE146DF378C620363C21AA6D1F
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
284
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
formbook
ID:
1
File name:
Unstable.exe
Verdict:
Malicious activity
Analysis date:
2022-04-11 19:47:51 UTC
Tags:
formbook trojan stealer

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
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:
FormBook
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Machine Learning detection for sample
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)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: CMSTP Execution Process Creation
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 607325 Sample: avPiu8mg2W Startdate: 11/04/2022 Architecture: WINDOWS Score: 100 32 Found malware configuration 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Antivirus detection for URL or domain 2->36 38 9 other signatures 2->38 9 avPiu8mg2W.exe 3 2->9         started        process3 file4 28 C:\Users\user\AppData\...\avPiu8mg2W.exe.log, ASCII 9->28 dropped 52 Tries to detect virtualization through RDTSC time measurements 9->52 13 avPiu8mg2W.exe 9->13         started        16 avPiu8mg2W.exe 9->16         started        signatures5 process6 signatures7 54 Modifies the context of a thread in another process (thread injection) 13->54 56 Maps a DLL or memory area into another process 13->56 58 Sample uses process hollowing technique 13->58 60 Queues an APC in another process (thread injection) 13->60 18 cmstp.exe 13->18         started        21 explorer.exe 13->21 injected process8 dnsIp9 40 Self deletion via cmd delete 18->40 42 Modifies the context of a thread in another process (thread injection) 18->42 44 Maps a DLL or memory area into another process 18->44 46 Tries to detect virtualization through RDTSC time measurements 18->46 24 cmd.exe 1 18->24         started        30 www.thhhh.xyz 125.77.166.115, 80 CHINATELECOM-FUJIAN-QUANZHOU-IDC1QuanzhouCN China 21->30 48 System process connects to network (likely due to code injection or exploit) 21->48 50 Performs DNS queries to domains with low reputation 21->50 signatures10 process11 process12 26 conhost.exe 24->26         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-04-11 18:05:53 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:ce20 rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
007694272e71c5aa5e99bee9e6f9a48bd591a5f1d84f7e4d82b86d32570815b0
MD5 hash:
df10f342c5a36206cae9c53f0fbda9dd
SHA1 hash:
fc0e8645a7ed3fe8eb6a6ec45e34753baa2b1461
SH256 hash:
85d3225b9401d3f0d7d6fd634e1f1422a67cf6c5d0adcb6886f9381125f7f669
MD5 hash:
22d42ba13d2f4b273f2d8d15e2cdda10
SHA1 hash:
397e9029a57f77b4084ad8380f2a58833bf9bfe5
SH256 hash:
c944efe6f7ebc5786e8db1b3a3b4296daacce868fe45318adf01617050e4ea9e
MD5 hash:
41b8a1bc6618194d120ff13a682bdf40
SHA1 hash:
9fad91612889296a90686ce98611f00ee17d0c15
Please note that we are no longer able to provide a coverage score for Virus Total.

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:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

Formbook

Executable exe c944efe6f7ebc5786e8db1b3a3b4296daacce868fe45318adf01617050e4ea9e

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-04-11 18:07:29 UTC

url : hxxp://wellcalls.com/Unstable.exe