MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 381227c5b42c990a854e5a39a0a917b0db7c9305d4523fa31cfae1640d71feec. 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 6 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 381227c5b42c990a854e5a39a0a917b0db7c9305d4523fa31cfae1640d71feec
SHA3-384 hash: a382665e07e491ec0a1ed6f465cfd8f223d2a6f0b4ca41779c775f0833413711a3a11d15f54f22ea3df827f301ea1293
SHA1 hash: 268e07ea3e97c5bdf159036486856133a61faf76
MD5 hash: d4b1b078082cacf461cd33f5fe38adc0
humanhash: seventeen-apart-comet-august
File name:d4b1b078082cacf461cd33f5fe38adc0
Download: download sample
Signature Formbook
Create hunting rule
File size:13'824 bytes
First seen:2022-07-27 08:05:06 UTC
Last seen:2022-07-27 14:58:31 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'753 x AgentTesla, 19'659 x Formbook, 12'250 x SnakeKeylogger)
ssdeep 192:Iag7GZjNfk8Vn23v+q9S5qNeTR32NeT4+vDsSc:IX7KZftV23v+GSMNekNek+vD/
TLSH T13B52D72063448990DA618E324CA3D658063BF90354397A5D3ACC6D6FAF33FA58A637B5
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon b298acbab2ca7a72 (2'327 x GCleaner, 1'631 x Socks5Systemz, 67 x RedLineStealer)
Reporter zbetcheckin
Tags:32 exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
298
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/294553/
Detection(s):
SecuriteInfo.com.W32.AIDetectNet.01.27714.15966.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
DNS request
Sending an HTTP GET request
Launching a process
Creating a process with a hidden window
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Enabling autorun by creating a file
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62e0f245e18d450dc68c1c3e/reports/543f6fe0-10de-4500-8cf0-fca2ccc9e840/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/34d04274-4d14-4ac7-8f13-1cb187cec7fa
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1041667
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Creates an undocumented autostart registry key
Encrypted powershell cmdline option found
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
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 domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Yara detected Generic Downloader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 674161 Sample: z76kqB66j8 Startdate: 27/07/2022 Architecture: WINDOWS Score: 100 45 Multi AV Scanner detection for domain / URL 2->45 47 Malicious sample detected (through community Yara rule) 2->47 49 Antivirus detection for URL or domain 2->49 51 9 other signatures 2->51 10 z76kqB66j8.exe 15 7 2->10         started        process3 dnsIp4 43 sucon.ga 192.185.174.179, 49726, 80 UNIFIEDLAYER-AS-1US United States 10->43 33 C:\Users\user\AppData\...\Dfihlcxq.exe, PE32 10->33 dropped 35 C:\Users\...\Dfihlcxq.exe:Zone.Identifier, ASCII 10->35 dropped 37 C:\Users\user\AppData\...\z76kqB66j8.exe.log, ASCII 10->37 dropped 61 Creates an undocumented autostart registry key 10->61 63 Encrypted powershell cmdline option found 10->63 65 Writes to foreign memory regions 10->65 67 2 other signatures 10->67 15 MSBuild.exe 10->15         started        18 powershell.exe 17 10->18         started        file5 signatures6 process7 signatures8 69 Modifies the context of a thread in another process (thread injection) 15->69 71 Maps a DLL or memory area into another process 15->71 73 Sample uses process hollowing technique 15->73 75 2 other signatures 15->75 20 explorer.exe 15->20 injected 24 conhost.exe 18->24         started        process9 dnsIp10 39 www.hubwealth.com 47.242.70.210, 49836, 80 CNNIC-ALIBABA-US-NET-APAlibabaUSTechnologyCoLtdC United States 20->39 41 www.preciousssllc.net 66.96.162.145, 49810, 80 BIZLAND-SDUS United States 20->41 53 System process connects to network (likely due to code injection or exploit) 20->53 26 systray.exe 20->26         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 26->55 57 Maps a DLL or memory area into another process 26->57 59 Tries to detect virtualization through RDTSC time measurements 26->59 29 cmd.exe 1 26->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/381227c5b42c990a854e5a39a0a917b0db7c9305d4523fa31cfae1640d71feec/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2022-07-27 07:26:52 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
18 of 26 (69.23%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hajcprnufsmqvbkoli42bkixwdnxzeyf2rjd7iy47lqwidlr73wa._file
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:s4s9 rat spyware stealer trojan
Link:
https://tria.ge/reports/220727-jzeezabggp/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
381227c5b42c990a854e5a39a0a917b0db7c9305d4523fa31cfae1640d71feec
MD5 hash:
d4b1b078082cacf461cd33f5fe38adc0
SHA1 hash:
268e07ea3e97c5bdf159036486856133a61faf76
Link:
https://www.unpac.me/results/9f1ec00d-2cc6-4dc1-ab16-9857f466bacf/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/381227c5b42c/report/overview.html
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:malware_Formbook_strings
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Web download

Formbook

Executable exe 381227c5b42c990a854e5a39a0a917b0db7c9305d4523fa31cfae1640d71feec

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2261595/
  
URLhaus
https://urlhaus.abuse.ch/url/2261691/
  
URLhaus
https://urlhaus.abuse.ch/url/2261784/
Cape
Cape
https://www.capesandbox.com/analysis/294553/

Comments


Avatar
zbet commented on 2022-07-27 08:05:10 UTC

url : hxxp://198.12.89.157/a/afc.exe