MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368. 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: 19


Intelligence 19 IOCs YARA 17 File information Comments
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SHA256 hash: 19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368
SHA3-384 hash: 36830830fe30fb0bcd853101baca1007f526a202bc1e2ce051a0527cf1edb01b964072eb0c6fee3d55139bd437f1c473
SHA1 hash: d7bafe72a3a8a9e06901155cdbf020d98f2535d7
MD5 hash: d3a2936e355fc5b62c309d80aa65e9b4
humanhash: hot-alanine-high-artist
File name:payment info.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:691'712 bytes
First seen:2025-01-30 19:32:57 UTC
Last seen:2025-01-30 22:36:16 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:BXcTTpuOZhzNA50jBIiIe/S+wi+2n7nw17jIBd5a:BcEsdmGI7eK+5+2nmjI4
TLSH T137E4BED03F367319DE696A34D259DDBA92A51A78B0047AF36ADC3B5732CC112AE0CF11
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon 1f3b6d7632552b0e (3 x Formbook, 2 x MassLogger, 2 x SnakeKeylogger)
Reporter cocaman
Tags:exe FormBook payment


Avatar
cocaman
Malicious email (T1566.001)
From: "comex@faleklatina.com" (likely spoofed)
Received: "from [195.211.191.70] (unknown [195.211.191.70]) "
Date: "30 Jan 2025 11:31:52 -0800"
Subject: "Payment confirmation"
Attachment: "payment info.exe"

Intelligence

File Origin
# of uploads :
2
# of downloads :
535
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
payment info.exe
Verdict:
Malicious activity
Analysis date:
2025-01-30 19:36:03 UTC
Tags:
formbook xloader
Link:
https://app.any.run/tasks/05566283-b627-4698-8697-9a41ad28cad5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.CrypterX-gen.12083.5005.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679bd4c802140668e2cd2e91
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a file
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Adding an exclusion to Microsoft Defender
Enabling autorun by creating a file
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
masquerade obfuscated packed packed packer_detected
Link:
https://www.filescan.io/uploads/679bd3efac8b38d9947ee951/reports/bc03ab65-5d5c-4f42-bc41-8cd360ac3d5e/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/93337941-ffc1-4e56-a1b4-a10c81ca99db
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1603314
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
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 dropped file
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
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1603314 Sample: payment info.exe Startdate: 30/01/2025 Architecture: WINDOWS Score: 100 59 www.oincatch.xyz 2->59 61 www.x-ist.club 2->61 63 3 other IPs or domains 2->63 77 Found malware configuration 2->77 79 Malicious sample detected (through community Yara rule) 2->79 81 Antivirus detection for URL or domain 2->81 85 13 other signatures 2->85 11 payment info.exe 7 2->11         started        15 rBchflGYc.exe 5 2->15         started        signatures3 83 Performs DNS queries to domains with low reputation 59->83 process4 file5 51 C:\Users\user\AppData\Roaming\rBchflGYc.exe, PE32 11->51 dropped 53 C:\Users\...\rBchflGYc.exe:Zone.Identifier, ASCII 11->53 dropped 55 C:\Users\user\AppData\Local\...\tmp3AF5.tmp, XML 11->55 dropped 57 C:\Users\user\...\payment info.exe.log, ASCII 11->57 dropped 95 Writes to foreign memory regions 11->95 97 Allocates memory in foreign processes 11->97 99 Adds a directory exclusion to Windows Defender 11->99 17 RegSvcs.exe 11->17         started        20 powershell.exe 23 11->20         started        22 powershell.exe 23 11->22         started        24 schtasks.exe 1 11->24         started        101 Multi AV Scanner detection for dropped file 15->101 103 Machine Learning detection for dropped file 15->103 105 Injects a PE file into a foreign processes 15->105 26 RegSvcs.exe 15->26         started        28 schtasks.exe 15->28         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 17->65 67 Maps a DLL or memory area into another process 17->67 69 Sample uses process hollowing technique 17->69 75 2 other signatures 17->75 30 explorer.exe 35 1 17->30 injected 71 Loading BitLocker PowerShell Module 20->71 32 conhost.exe 20->32         started        34 WmiPrvSE.exe 20->34         started        36 conhost.exe 22->36         started        38 conhost.exe 24->38         started        73 Found direct / indirect Syscall (likely to bypass EDR) 26->73 40 conhost.exe 28->40         started        process9 process10 42 cmmon32.exe 30->42         started        45 cmmon32.exe 30->45         started        signatures11 87 Modifies the context of a thread in another process (thread injection) 42->87 89 Maps a DLL or memory area into another process 42->89 47 cmd.exe 42->47         started        91 Tries to detect virtualization through RDTSC time measurements 45->91 93 Switches to a custom stack to bypass stack traces 45->93 process12 process13 49 conhost.exe 47->49         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-01-30 19:33:05 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
25 of 38 (65.79%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dhbaxbf5fdgfgtvgjf2hjcg76rolknjzvlw4snxofbkpspgw4nua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unknown_loader_037
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Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:a01d discovery execution rat spyware stealer trojan
Link:
https://tria.ge/reports/250130-x9hf9szrdy/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Checks computer location settings
Command and Scripting Interpreter: PowerShell
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1c7f0c33-0c84-4c82-8f82-ee7bcddfcc6b
Unpacked files
SH256 hash:
13e4cd19503453cd78e71f728c9389b2c99e091b215e8ddbec0d81b2f6876f72
MD5 hash:
6a24b2b9224492367a531a14e4c882de
SHA1 hash:
0a55e7a38280f56ad0acdc769e7b795ab22b268a
Detections:
FormBook
Create hunting rule
win_formbook_auto
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Formbook
Create hunting rule
Link:
https://www.unpac.me/results/cad8ff20-6785-4fa9-b06c-5ff8c8066ec8/
Parent samples :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 hash:
871ef768002b9f61e79a4d6516d9558ec13bf5104eaee6389114f3cb693e347d
MD5 hash:
5b91515fc5d5f5d6c3df0afe80ba4f9a
SHA1 hash:
6d64bfcc7222e08d88b1e045be21cf8ac066fe30
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/cad8ff20-6785-4fa9-b06c-5ff8c8066ec8/
SH256 hash:
a7a901713803b033329a7ba6d7fc2a0e25fc9b2dcc9a97fe262ef5c4f8c467ff
MD5 hash:
0500b03a64683c71a1e12d5d2c0ac907
SHA1 hash:
16487072ac3214811b47be98647eb340cbe8295c
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/cad8ff20-6785-4fa9-b06c-5ff8c8066ec8/
SH256 hash:
19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368
MD5 hash:
d3a2936e355fc5b62c309d80aa65e9b4
SHA1 hash:
d7bafe72a3a8a9e06901155cdbf020d98f2535d7
Link:
https://www.unpac.me/results/cad8ff20-6785-4fa9-b06c-5ff8c8066ec8/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/19c20b84bd28/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368

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:Check_OutputDebugStringA_iat
Create hunting rule
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__GlobalFlags
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Active
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerHiding__Thread
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:NETexecutableMicrosoft
Create hunting rule
Author:malware-lu
Rule name:pe_imphash
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:RIPEMD160_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for RIPEMD-160 constants
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA1_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA1 constants
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

Formbook

Executable exe 19c20b84bd28cc534ea649747488dff45cb53539aaedc936ee2854f93cd6e368

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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