MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 883fbd9454d2908498fa566ecd5022d66f57afe80eeda4b90083ea35fa1c83fb. 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: 11


Intelligence 11 IOCs YARA 5 File information Comments
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SHA256 hash: 883fbd9454d2908498fa566ecd5022d66f57afe80eeda4b90083ea35fa1c83fb
SHA3-384 hash: 7f65a4558eb5ba2900f600b6cb4251907032501d6483d8cc9c0ff30040500203c7db3a1c19ea85e0ae5e653722771b3f
SHA1 hash: bf4bdf50838dbc371431dceece35b8b4f3c32605
MD5 hash: a8bd67a5decdb2e1cace3f83a877577d
humanhash: aspen-diet-maine-seven
File name:Payment_Advice.exe
Download: download sample
Signature Formbook
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File size:76'800 bytes
First seen:2022-07-19 05:57:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'610 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 1536:R5CigD9hW4Fi7O8xcIhd9y8x09ubvO67yG47uAzPqurdthad63MRKDMCfYf8N:RJgpEsQTxcIhd9y8x09ubvO67yG4SAzj
TLSH T1BC738941E145DCA9E81729F2AC6FD93020667F8D9179C50D328BBB2A45F334720ABE5F
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 a2a2889ca29a9e86 (9 x Formbook, 1 x SnakeKeylogger, 1 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
267
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/291769/
Detection(s):
SecuriteInfo.com.Trojan.Downloader.10124.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62d64864ef2b0e63a8252199/reports/65f22b47-8afc-49d5-97bb-5785916e773a/overview
Result
Verdict:
SUSPICIOUS
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:
Generic Malware
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9709e7e5-062d-4eee-809c-f4ba3e1ec1ef
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1036271
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
Drops executable to a common third party application directory
Encrypted powershell cmdline option found
Executable has a suspicious name (potential lure to open the executable)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
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
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected FormBook
Yara detected Generic Downloader
Yara detected MSILDownloaderGeneric
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 668765 Sample: Payment_Advice.exe Startdate: 19/07/2022 Architecture: WINDOWS Score: 100 39 Malicious sample detected (through community Yara rule) 2->39 41 Antivirus detection for URL or domain 2->41 43 Multi AV Scanner detection for dropped file 2->43 45 10 other signatures 2->45 10 Payment_Advice.exe 15 7 2->10         started        process3 dnsIp4 37 cdn.discordapp.com 162.159.133.233, 443, 49740 CLOUDFLARENETUS United States 10->37 33 C:\Users\user\AppData\Roaming\...\cloud.exe, PE32 10->33 dropped 35 C:\Users\user\...\Payment_Advice.exe.log, ASCII 10->35 dropped 49 Creates an undocumented autostart registry key 10->49 51 Encrypted powershell cmdline option found 10->51 53 Writes to foreign memory regions 10->53 55 3 other signatures 10->55 15 MSBuild.exe 10->15         started        18 MSBuild.exe 10->18         started        20 powershell.exe 18 10->20         started        file5 signatures6 process7 signatures8 57 Modifies the context of a thread in another process (thread injection) 15->57 59 Maps a DLL or memory area into another process 15->59 61 Sample uses process hollowing technique 15->61 63 Queues an APC in another process (thread injection) 15->63 22 explorer.exe 15->22 injected 65 Tries to detect virtualization through RDTSC time measurements 18->65 24 conhost.exe 20->24         started        process9 process10 26 mstsc.exe 22->26         started        signatures11 47 Tries to detect virtualization through RDTSC time measurements 26->47 29 cmd.exe 1 26->29         started        process12 process13 31 conhost.exe 29->31         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/883fbd9454d2908498fa566ecd5022d66f57afe80eeda4b90083ea35fa1c83fb/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-07-19 05:58:06 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
16 of 26 (61.54%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ra733fcu2kiijgh2kzxm2ubc2zxvpl7ib3w2joiaqpvdl6q4qp5q._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:fs44 rat spyware stealer suricata trojan
Link:
https://tria.ge/reports/220719-gn53fadcfn/
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
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
883fbd9454d2908498fa566ecd5022d66f57afe80eeda4b90083ea35fa1c83fb
MD5 hash:
a8bd67a5decdb2e1cace3f83a877577d
SHA1 hash:
bf4bdf50838dbc371431dceece35b8b4f3c32605
Link:
https://www.unpac.me/results/2fa240c1-c951-490a-9c18-974bfeb55797/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/883fbd9454d2/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/883fbd9454d2908498fa566ecd5022d66f57afe80eeda4b90083ea35fa1c83fb

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_SUSPICIOUS_EXE_DiscordURL
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Author:ditekSHen
Description:Detects executables Discord URL observed in first stage droppers
Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:SUSP_Discord_Attachments_URL
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Author:SECUINFRA Falcon Team
Description:Detects a PE file that contains an Discord Attachments URL. This is often used by Malware to download further payloads
Rule name:SUSP_PE_Discord_Attachment_Oct21_1
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Author:Florian Roth
Description:Detects suspicious executable with reference to a Discord attachment (often used for malware hosting on a legitimate FQDN)
Reference:Internal Research

File information

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

Malspam

Formbook

Executable exe 883fbd9454d2908498fa566ecd5022d66f57afe80eeda4b90083ea35fa1c83fb

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/291769/

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