MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9c581c4cec9f25a55ee985d08ad3ba40a268aff6ea05aebff399c31f86b98065. 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 22 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9c581c4cec9f25a55ee985d08ad3ba40a268aff6ea05aebff399c31f86b98065
SHA3-384 hash: 138a5e126dff4dede2f38c1a3b8d79e503e9d4c350fad758920038a4d663dfe397afb05f758cf0b329ae957d3f33f0dc
SHA1 hash: a15f53cb65e2ecfd3c5112711cceb30b9ab88257
MD5 hash: 1869978103ed372145fbf14975f8c56e
humanhash: island-failed-july-juliet
File name:z71Listadenuevopedido.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:3'443'488 bytes
First seen:2024-06-13 18:34:51 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 24576:0Ln4nHjmrtOSkcMfMFQtpHv85qvdE/ta/7SyI:0LnUHjmb0EFQtpHE5qvdE/ADSb
TLSH T103F5F041B62B9D2BFC2A61B0D4E2B0F104FD6D4738F44A0FEFA23D1954722BE9954639
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
File icon (PE):PE icon
dhash icon 0999908fc78787fb (14 x Formbook, 3 x AgentTesla, 2 x SnakeKeylogger)
Reporter FXOLabs
Tags:exe FormBook signed

Code Signing Certificate

Organisation:Microsoft Code Signing PCA 2011
Issuer:Microsoft Code Signing PCA 2011
Algorithm:sha256WithRSAEncryption
Valid from:2024-06-12T23:20:57Z
Valid to:2025-06-12T23:20:57Z
Serial number: ff9f8842a26e9688ae5ce71f11fefc99
Thumbprint Algorithm:SHA256
Thumbprint: 9704d88e1c2e384de6285496b9713152f09a9ab62bb87c2c6ed1f3a14ecf0fc5
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
398
Origin country :
BR BR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
900524362.7z
Verdict:
No threats detected
Analysis date:
2024-06-13 07:03:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/82917995-395c-49d3-86ab-bffca4bd5517

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Malware.Banload-6981577-0
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=666b3c93a2bce47be7d93b31win7simulatehigh_evasion
Tags:
Banker Encryption Execution Generic Static Swotter Dexter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Launching a process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Unauthorized injection to a recently created process
Blocking the User Account Control
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
overlay vbnet
Link:
https://www.filescan.io/uploads/666b3be1ef9fdf64aa6aed2e/reports/b7468a04-a2b8-4103-9df0-1f4f376a4975/overview
Verdict:
Malicious
Labled as:
Barys.Generic
Link:
https://www.hybrid-analysis.com/sample/9c581c4cec9f25a55ee985d08ad3ba40a268aff6ea05aebff399c31f86b98065
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/40fc56de-943b-47a6-8ba6-172e0ea54211
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1456741
Signature
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Antivirus detection for URL or domain
Disables UAC (registry)
Found direct / indirect Syscall (likely to bypass EDR)
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
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)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected FormBook
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1456741 Sample: 900524362267263.exe Startdate: 13/06/2024 Architecture: WINDOWS Score: 100 36 www.yedurrum.xyz 2->36 38 www.onemuslimmentors.xyz 2->38 40 19 other IPs or domains 2->40 48 Snort IDS alert for network traffic 2->48 50 Malicious sample detected (through community Yara rule) 2->50 52 Antivirus detection for URL or domain 2->52 56 8 other signatures 2->56 10 900524362267263.exe 1 3 2->10         started        signatures3 54 Performs DNS queries to domains with low reputation 38->54 process4 signatures5 60 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->60 62 Writes to foreign memory regions 10->62 64 Allocates memory in foreign processes 10->64 66 3 other signatures 10->66 13 ngen.exe 10->13         started        16 powershell.exe 23 10->16         started        18 WerFault.exe 19 16 10->18         started        process6 signatures7 76 Maps a DLL or memory area into another process 13->76 20 KXMWYVGdJoNqr.exe 13->20 injected 78 Loading BitLocker PowerShell Module 16->78 23 WmiPrvSE.exe 16->23         started        25 conhost.exe 16->25         started        process8 signatures9 58 Found direct / indirect Syscall (likely to bypass EDR) 20->58 27 grpconv.exe 13 20->27         started        process10 signatures11 68 Tries to steal Mail credentials (via file / registry access) 27->68 70 Tries to harvest and steal browser information (history, passwords, etc) 27->70 72 Modifies the context of a thread in another process (thread injection) 27->72 74 3 other signatures 27->74 30 KXMWYVGdJoNqr.exe 27->30 injected 34 firefox.exe 27->34         started        process12 dnsIp13 42 synergon.space 109.95.158.127, 49743, 49744, 49745 DHOSTING-ASWarsawPolandPL Poland 30->42 44 ytw6.top 38.47.232.224, 49767, 49768, 49769 COGENT-174US United States 30->44 46 7 other IPs or domains 30->46 80 Found direct / indirect Syscall (likely to bypass EDR) 30->80 signatures14
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/9c581c4cec9f25a55ee985d08ad3ba40a268aff6ea05aebff399c31f86b98065
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9c581c4cec9f25a55ee985d08ad3ba40a268aff6ea05aebff399c31f86b98065/
Threat name:
ByteCode-MSIL.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-06-13 02:51:20 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
8
AV detection:
24 of 38 (63.16%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=trmbythmt4s2kxxjqxiivu52icrgrl7w5ic25p7tthbr7bvzqbsq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion execution persistence trojan
Link:
https://tria.ge/reports/240613-w8dags1hql/
Behaviour
Runs regedit.exe
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Checks computer location settings
Windows security modification
Adds policy Run key to start application
Command and Scripting Interpreter: PowerShell
UAC bypass
Windows security bypass
Unpacked files
SH256 hash:
9c581c4cec9f25a55ee985d08ad3ba40a268aff6ea05aebff399c31f86b98065
MD5 hash:
1869978103ed372145fbf14975f8c56e
SHA1 hash:
a15f53cb65e2ecfd3c5112711cceb30b9ab88257
Link:
https://www.unpac.me/results/0acc9541-f3a1-4cde-97bf-c8ae69aec04b/
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: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:Formbook
Create hunting rule
Author:kevoreilly
Description:Formbook Payload
Rule name:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:Windows_Trojan_Formbook
Create hunting rule
Author:@malgamy12
Rule name:Windows_Trojan_Formbook_1112e116
Create hunting rule
Author:Elastic Security
Reference:https://www.elastic.co/security-labs/formbook-adopts-cab-less-approach
Rule name:win_formbook_w0
Create hunting rule
Author:@malgamy12

File information

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

Malspam

Formbook

Executable exe 9c581c4cec9f25a55ee985d08ad3ba40a268aff6ea05aebff399c31f86b98065

(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_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high

Comments