MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
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SHA256 hash: b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e
SHA3-384 hash: 66a4a9c74f4e97b622f13bcda7754a29f8aa23a428ca687f077a2f1f83b1eb25eef0130473ff048d78109e0715cab891
SHA1 hash: aa0adb1fbb53c641b496576510325cb472b7a1b8
MD5 hash: 7287e41cfb376388b55cee149649dc13
humanhash: east-purple-apart-edward
File name:z3NOVOPEDIDODECOMPRA.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:3'505'221 bytes
First seen:2024-07-16 11:27:18 UTC
Last seen:2024-07-24 20:41:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
ssdeep 12288:9c9QpR49c/s5W3BlGIv83x8Er1+1/zGGtqN0tEVprKZCM/xNIc11qbb:a6VseFk3xZrI6tNfT2ZCM/xNIcCbb
Threatray 20 similar samples on MalwareBazaar
TLSH T1ECF5220572A71E23FE188AB4D0C934F01BFD8D5731F2681FEF419D158884ABDAAA1776
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)
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
4
# of downloads :
367
Origin country :
BR BR
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.Inject5.6331.4942.28292.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=669659451dded92a081f1f8bwin10vpnfull_triage
Tags:
Encryption Execution Stealth
Result
Verdict:
Malware
Maliciousness:

Behaviour
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)
Blocking the User Account Control
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
No Threat
Threat level:
  10/10
Confidence:
100%
Tags:
overlay vbnet
Link:
https://www.filescan.io/uploads/669659494cee8c9113b6bc2a/reports/92af6110-ecd5-41a4-a2df-d75e7a023669/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e
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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/71865c23-f88b-43db-9d0e-1692a228bf02
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1474160
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
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
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: 1474160 Sample: z3NOVOPEDIDODECOMPRA.exe Startdate: 16/07/2024 Architecture: WINDOWS Score: 100 44 www.grafiktema.xyz 2->44 46 www.vacaturecast.com 2->46 48 20 other IPs or domains 2->48 52 Malicious sample detected (through community Yara rule) 2->52 54 Multi AV Scanner detection for submitted file 2->54 56 Yara detected FormBook 2->56 60 5 other signatures 2->60 10 z3NOVOPEDIDODECOMPRA.exe 1 4 2->10         started        signatures3 58 Performs DNS queries to domains with low reputation 44->58 process4 signatures5 64 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 10->64 66 Writes to foreign memory regions 10->66 68 Allocates memory in foreign processes 10->68 70 3 other signatures 10->70 13 ngen.exe 10->13         started        16 powershell.exe 23 10->16         started        18 WerFault.exe 19 16 10->18         started        20 2 other processes 10->20 process6 signatures7 72 Maps a DLL or memory area into another process 13->72 22 WnqrxPyobnGPWXLUNwZlaJmuv.exe 13->22 injected 74 Loading BitLocker PowerShell Module 16->74 25 WmiPrvSE.exe 16->25         started        27 conhost.exe 16->27         started        process8 signatures9 62 Found direct / indirect Syscall (likely to bypass EDR) 22->62 29 SecEdit.exe 13 22->29         started        process10 signatures11 76 Tries to steal Mail credentials (via file / registry access) 29->76 78 Tries to harvest and steal browser information (history, passwords, etc) 29->78 80 Modifies the context of a thread in another process (thread injection) 29->80 82 3 other signatures 29->82 32 WnqrxPyobnGPWXLUNwZlaJmuv.exe 29->32 injected 36 firefox.exe 29->36         started        process12 dnsIp13 38 grafiktema.xyz 31.186.11.254, 49770, 49771, 49772 BETAINTERNATIONALTR Turkey 32->38 40 www.drivemktg.co 193.108.130.23, 49741, 49742, 49743 SVK-ASCZ Russian Federation 32->40 42 8 other IPs or domains 32->42 50 Found direct / indirect Syscall (likely to bypass EDR) 32->50 signatures14
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e/
Threat name:
Win64.Trojan.Leonem
Create hunting rule
Status:
Malicious
First seen:
2024-07-16 10:40:25 UTC
File Type:
PE+ (.Net Exe)
Extracted files:
1
AV detection:
22 of 37 (59.46%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=w53zesd4ap72enb4yragqngxwmsgmcddlvylto6lio75nvekxm7a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
1b7afac2a9b048cdf2e40469ef11cc2830eff9223177a288a0bce06f6f508f71
Formbook
27933dab971d59c6643782d5ba06a20be1a4d6de96c1d817d8643a59bff24a63
Formbook
46497b500d1ac359803b9781904a38016d5288c319893a47e04cefe92eb0fe09
Formbook
684b898fd7fed76973c556a948858f5aa69ecaca176fa5e856ecd246a8c57565
Formbook
73f05c2e81609669d10849fc0c8d9750775adc3e7ec7f118b4e9f254ac1d2825
Formbook
8a5024ca7e74fce854dbfb989c0a5e3e80c1e70620b6fba6b7126a6842ce02a5
Formbook
92044a1dfdd31eaa681683708cbdd3c75e398f35a6ace235926946dc5fd1715a
Formbook
bd8057af228eb7494ff3b6988f70a9785c4e686caaf3a2bcf641b3f02c101567
Formbook
d852f4642f75bbaa7c0aa90e6aba7761db295baa418eeb42da5a7ca22be2a4d4
Formbook
+ 10 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
evasion execution persistence trojan
Link:
https://tria.ge/reports/240716-nkz6cashme/
Behaviour
Modifies Internet Explorer settings
Modifies registry class
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
System policy modification
Enumerates physical storage devices
Suspicious use of SetThreadContext
Adds Run key to start application
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
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/2e44c10b-1baf-422e-8f23-c82a26ecf9f3
Unpacked files
SH256 hash:
b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e
MD5 hash:
7287e41cfb376388b55cee149649dc13
SHA1 hash:
aa0adb1fbb53c641b496576510325cb472b7a1b8
Link:
https://www.unpac.me/results/d0b1d76b-a43b-4cbd-8a49-ca6f758d671d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.84
Link:
https://yomi.yoroi.company/submissions/b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e

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_no_import_table
Create hunting rule
Description:Detect pe file that no import table

File information

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

Malspam

Formbook

Executable exe b77792487c03ffa2343cc4406834d7b3246608635d70b9bbcb43bfd6d48abb3e

(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 (GUARD_CF)high

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