MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c
SHA3-384 hash: f305e5b6460ac9eb00f3341cd0f5847ee307b7c95076291a5a38c4120ea463fbe1131931af538d524afff78c3761d965
SHA1 hash: e7a70c2dc3967e830a4280dab823c50adcd64ddf
MD5 hash: 6f09bfc9c8913a0e68615779294b3a10
humanhash: hydrogen-video-london-helium
File name:f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c
Download: download sample
Signature Formbook
Create hunting rule
File size:1'189'376 bytes
First seen:2024-04-04 13:12:36 UTC
Last seen:2024-04-04 14:19:59 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:RAHnh+eWsN3skA4RV1Hom2KXMmHah721M5qBVmnLyIfXA5:oh+ZkldoPK8Yah7P5qBVGyIfW
Threatray 281 similar samples on MalwareBazaar
TLSH T1DC45BE0273D1C036FFABA2739B6AF64156BC79250123852F13981DB9BD701B2267E763
TrID 63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
11.6% (.EXE) Win64 Executable (generic) (10523/12/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
338
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
formbook
Create hunting rule
ID:
1
File name:
f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c
Verdict:
Malicious activity
Analysis date:
2024-04-04 13:12:05 UTC
Tags:
formbook xloader stealer spyware
Link:
https://app.any.run/tasks/020feef3-11b8-4075-842a-890d67609d16

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
autoit fingerprint keylogger lolbin nymeria packed shell32
Link:
https://www.filescan.io/uploads/660ea75fd463a7b0477f9b18/reports/f619704c-e69b-476c-8d62-47a90dded28a/overview
Verdict:
Malicious
Labled as:
AIT:Trojan.Nymeria
Link:
https://www.hybrid-analysis.com/sample/f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c
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/fbaf8e5b-fad4-4e18-8045-cec1ea89d823
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1420173
Signature
Binary is likely a compiled AutoIt script file
Found direct / indirect Syscall (likely to bypass EDR)
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
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
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 FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1420173 Sample: ixtUbGW9Vx.exe Startdate: 04/04/2024 Architecture: WINDOWS Score: 100 28 www.sweet777.work 2->28 30 www.make-l.ru 2->30 32 2 other IPs or domains 2->32 42 Snort IDS alert for network traffic 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 3 other signatures 2->48 10 ixtUbGW9Vx.exe 4 2->10         started        signatures3 process4 signatures5 60 Binary is likely a compiled AutoIt script file 10->60 62 Writes to foreign memory regions 10->62 64 Maps a DLL or memory area into another process 10->64 13 svchost.exe 10->13         started        process6 signatures7 66 Maps a DLL or memory area into another process 13->66 16 VbWBYwuBXCktqObqI.exe 13->16 injected process8 signatures9 40 Found direct / indirect Syscall (likely to bypass EDR) 16->40 19 openfiles.exe 13 16->19         started        process10 signatures11 50 Tries to steal Mail credentials (via file / registry access) 19->50 52 Tries to harvest and steal browser information (history, passwords, etc) 19->52 54 Modifies the context of a thread in another process (thread injection) 19->54 56 2 other signatures 19->56 22 VbWBYwuBXCktqObqI.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 34 www.sweet777.work 154.83.2.74, 49707, 80 ST-BGPUS Seychelles 22->34 36 www.make-l.ru 194.58.112.174, 49713, 49714, 49715 AS-REGRU Russian Federation 22->36 38 2 other IPs or domains 22->38 58 Found direct / indirect Syscall (likely to bypass EDR) 22->58 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c/
Threat name:
Win32.Trojan.Nymeria
Create hunting rule
Status:
Malicious
First seen:
2024-03-23 00:49:00 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=6stfvbxptsyc3rkzn6fgd4ohyd5hh5dzu4oj2xtfvahmrgezbjoa._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
84176781043f8f95306328477f7b28fa721f44b1767fe740cbd207233c2a47c6
Formbook
96b2160da785abf50af26520f1bc1743e962f24bf983b5ddee8591bdedd0f035
Formbook
9a565700a3d3c7a802780c0e4ba717b082175fd33b5afc7dcfeb95905b6db784
Formbook
9acf79ea7507e73dadecddb7340b4162623a6f46289eb70517c5ff39121c11d0
Formbook
9f0139fadc3ae86c62acc7c217e8e3ddbd5965c0784d64737874566ccd28920a
Formbook
bf1f882e2a1d0e35207cd7cab867bffe933e134e43ff317acf2db538bd4d7210
Formbook
cb348e8dbd6c518a9ad671a9fb235cea3eeba8b7036fc5498f6b118d4bc3060b
Formbook
d68a5d440931df383de62e3436f5f485ecd75b552e8b78065706a8c880828378
Formbook
de64c0a6d7c265a6f917c40454d8f4fad3208d796c8f4616fd271a4882a82843
Formbook
dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
Formbook
+ 271 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240404-qf3f1sgg6v/
Behaviour
Modifies Internet Explorer settings
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
9d7eee7f48da3098cb749abfe1ed9d3ab06be0f1d8dd56a128f01f3808862d3f
MD5 hash:
f4715e96f1a90c7a4ede5d1109389207
SHA1 hash:
546309284560aa845d451f8e350ab4089770415a
Link:
https://www.unpac.me/results/86de44a0-6c0d-4e27-96ba-5e0418edee48/
SH256 hash:
a3aa0f014dc4f65c95eacd776c2e547aed9dad04629730aaa50f05750e506ea0
MD5 hash:
47661c6ab744e2e0a49d2e8c753977d6
SHA1 hash:
ebda6128c76954bd4f26d63af69b40f348139e42
Link:
https://www.unpac.me/results/86de44a0-6c0d-4e27-96ba-5e0418edee48/
SH256 hash:
f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c
MD5 hash:
6f09bfc9c8913a0e68615779294b3a10
SHA1 hash:
e7a70c2dc3967e830a4280dab823c50adcd64ddf
Detections:
AutoIT_Compiled
Create hunting rule
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/86de44a0-6c0d-4e27-96ba-5e0418edee48/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/f4a65a86ef9c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Formbook
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/f4a65a86ef9cb02dc5596f8a61f1c7c0fa73f479a71c9d5e65a80ec898990a5c

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:AutoIT_Compiled
Create hunting rule
Author:@bartblaze
Description:Identifies compiled AutoIT script (as EXE). This rule by itself does NOT necessarily mean the detected file is malicious.
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research

File information

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

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
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

Comments