MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670. 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: 18

Intelligence 18 IOCs YARA 22 File information Comments

SHA256 hash:	61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670
SHA3-384 hash:	5e6936999f9762c4b86324f0243a8bbe672bf53623468edb4b3176f8bf1f204b32ddf47bc5793288605f9bb7e769415a
SHA1 hash:	05c86f88765f15a084ded7ab85087a2b17c65e28
MD5 hash:	5ed230a016dd738e413233b94852ff87
humanhash:	river-fanta-magnesium-mississippi
File name:	rMTO.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'081'344 bytes
First seen:	2025-02-28 08:00:07 UTC
Last seen:	2025-03-03 14:06:54 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep	24576:Yu6J33O0c+JY5UZ+XC0kGso6FaXD4tOVveVibem6WY:Su0c++OCvkGs9FaXDoOVTBY
TLSH	T1C335BE22B3DDC360CB669173BF69B7016EBF78214630B95B2F980D7DA950162162C7A3
TrID	63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 11.6% (.EXE) Win64 Executable (generic) (10522/11/4) 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)
Magika	pebin
dhash icon	aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter	FXOLabs
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

501

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

rMTO.exe

Verdict:

Suspicious activity

Analysis date:

2025-02-28 08:03:47 UTC

Tags:

n/a

Link:

https://app.any.run/tasks/0107e561-009c-4483-8bdf-2ae5767500a1

Note:

ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample

Detection(s):

SecuriteInfo.com.VBS.Obfus-140.UNOFFICIAL

SecuriteInfo.com.BehavesLike.Win32.Generic.vh.UNOFFICIAL

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=67c16d464e50050b2e6ef727

Tags:

autorun autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Creating a file

Creating a process from a recently created file

Launching a process

Сreating synchronization primitives

Launching cmd.exe command interpreter

Setting browser functions hooks

Enabling autorun by creating a file

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Likely Malicious

Threat level:

7.5/10

Confidence:

100%

Tags:

adaptive-context autoit cmdkey compiled-script evasive extrac32 fingerprint keylogger lolbin microsoft_visual_cc obfuscated packed packed packer_detected

Link:

https://www.filescan.io/uploads/67c16d1c3c5f644bd93c3036/reports/62523aee-f022-4845-a7f1-d9f05a2d631b/overview

Verdict:

Malicious

Labled as:

Win/malicious_confidence_100%

Link:

https://www.hybrid-analysis.com/sample/61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670

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/f1bee75d-aa0b-4e83-ba19-a0ea5342f9f2

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.expl.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1626356

Signature

Antivirus detection for URL or domain

Binary is likely a compiled AutoIt script file

C2 URLs / IPs found in malware configuration

Drops VBS files to the startup folder

Found malware configuration

Joe Sandbox ML detected suspicious 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 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: Drops script at startup location

Sigma detected: WScript or CScript Dropper

Suricata IDS alerts for network traffic

Switches to a custom stack to bypass stack traces

System process connects to network (likely due to code injection or exploit)

Tries to detect virtualization through RDTSC time measurements

Uses ipconfig to lookup or modify the Windows network settings

Windows Scripting host queries suspicious COM object (likely to drop second stage)

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

99%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670

Detection:

formbook

Link:

https://mwdb.cert.pl/sample/61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670/

Threat name:

Win32.Trojan.AutoitInject

Status:

Malicious

First seen:

2025-02-28 01:10:30 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

22 of 24 (91.67%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=mhokgnmscb6w33tsnuotvfqfa7rswccfzhsorqd4qhqhbfvqwzya._file

Verdict:

malicious

Label(s):

formbook

unknown_loader_036

Similar samples:

error

Formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:mg63 discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250228-jv77gsvwes/

Behaviour

Enumerates system info in registry

Modifies registry class

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

Program crash

System Location Discovery: System Language Discovery

AutoIT Executable

Suspicious use of SetThreadContext

Drops startup file

Executes dropped EXE

Loads dropped DLL

Formbook payload

Formbook

Formbook family

Verdict:

Malicious

Tags:

trojan

YARA:

SUSP_Imphash_Mar23_3

Link:

https://app.threat.zone/submission/93ef1731-4938-46c9-ad9c-1a05ee645443

Unpacked files

SH256 hash:

61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670

MD5 hash:

5ed230a016dd738e413233b94852ff87

SHA1 hash:

05c86f88765f15a084ded7ab85087a2b17c65e28

Link:

https://www.unpac.me/results/00c51b28-823b-456a-b254-876e4340b1ed/

SH256 hash:

5a329f22310883579c8f0d2c6b3e8a4a82ad69579ba595443fdd8401ef78e5e8

MD5 hash:

7518b66f99a7e06b90a20f0905ba3535

SHA1 hash:

8ec1525b5f911f9792ac037b11310eba55de0160

Detections:

win_formbook_w0

win_formbook_g0

win_formbook_auto

FormBook

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/00c51b28-823b-456a-b254-876e4340b1ed/

Parent samples :

9504393cf0679893bff43bd2c1bd463b3dcdbb00f76803b9a58d948b69f09989
61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670
4499c00b92a2830d6b775fc8c833a661f646272881c6b2229e38ba238d3fb36b
d30a1c8e49151c602211ce4919f9fbe8ab2011a48b889c99bc5cef3716db4826
68eeebf088677c025da067485a8448bfa38f4b13c61e5e2c2ed717701df74222
bd211d6a43f210cdd04cef6132c53362a79d7859570266a37655aafc574415c9
ee888cbdcfea8296d9a839157d62b73229bf06f0446567b529867181bb807a77
e45b701a7306aa4a47751b8166e369a719ac19648f37efb1a6d949de36a3d1af
22d92af6c8a273dc5a9e69e37ccfb5ffe6e7d7f0c7a46ee6b9f7e5cb34402128

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/61dca3359210/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/61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670

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:	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:	Formbook Create hunting rule
Author:	JPCERT/CC Incident Response Group
Description:	detect Formbook in memory
Reference:	internal research

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:	meth_stackstrings 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:	RANSOMWARE Create hunting rule
Author:	ToroGuitar

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:	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

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)

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_auto Create hunting rule
Author:	Felix Bilstein - yara-signator at cocacoding dot com
Description:	Detects win.formbook.

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

rar b36e86335ae567a379602bd3d3fa7f1cc04019eb429aaef593c76602085773e0

Formbook

exe 61dca33592107d6dee726d1d3a960507e32b0845c9e4e8c07c81e07096b0b670

(this sample)

Delivery method

Distributed via e-mail attachment

Dropped by

SHA256 b36e86335ae567a379602bd3d3fa7f1cc04019eb429aaef593c76602085773e0

Dropped by

MD5 9e4a43bded1019e2de2e588e3cdbbe8d

Dropped by

SHA256 b3f6610dc36c6b3e73e5ca92b11efffe24c108106b5392a2c1914251ad2c7bd3

Dropped by

MD5 7c534367fe058876dc7c47f868801322

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

ID	Title	Severity
CHECK_AUTHENTICODE	Missing Authenticode	high
CHECK_DLL_CHARACTERISTICS	Missing dll Security Characteristics (HIGH_ENTROPY_VA)	high
CHECK_NX	Missing Non-Executable Memory Protection	critical

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::AllocateAndInitializeSid ADVAPI32.dll::CopySid ADVAPI32.dll::FreeSid ADVAPI32.dll::GetLengthSid ADVAPI32.dll::GetTokenInformation ADVAPI32.dll::GetAce
COM_BASE_API	Can Download & Execute components	ole32.dll::CLSIDFromProgID ole32.dll::CoCreateInstance ole32.dll::CoCreateInstanceEx ole32.dll::CoInitializeSecurity ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_API	Can Play Multimedia	WINMM.dll::mciSendStringW WINMM.dll::timeGetTime WINMM.dll::waveOutSetVolume
SECURITY_BASE_API	Uses Security Base API	ADVAPI32.dll::AddAce ADVAPI32.dll::AdjustTokenPrivileges ADVAPI32.dll::CheckTokenMembership ADVAPI32.dll::DuplicateTokenEx ADVAPI32.dll::GetAclInformation ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_API	Manipulates System Shell	SHELL32.dll::ShellExecuteExW SHELL32.dll::ShellExecuteW SHELL32.dll::SHFileOperationW
WIN32_PROCESS_API	Can Create Process and Threads	ADVAPI32.dll::CreateProcessAsUserW KERNEL32.dll::CreateProcessW ADVAPI32.dll::CreateProcessWithLogonW KERNEL32.dll::OpenProcess ADVAPI32.dll::OpenProcessToken ADVAPI32.dll::OpenThreadToken
WIN_BASE_API	Uses Win Base API	KERNEL32.dll::TerminateProcess KERNEL32.dll::SetSystemPowerState KERNEL32.dll::LoadLibraryA KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryW KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::ReadConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileExW KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateHardLinkW IPHLPAPI.DLL::IcmpCreateFile KERNEL32.dll::CreateFileW
WIN_BASE_USER_API	Retrieves Account Information	KERNEL32.dll::GetComputerNameW ADVAPI32.dll::GetUserNameW ADVAPI32.dll::LogonUserW ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_API	Supports Windows Networking	MPR.dll::WNetAddConnection2W MPR.dll::WNetUseConnectionW
WIN_REG_API	Can Manipulate Windows Registry	ADVAPI32.dll::RegConnectRegistryW ADVAPI32.dll::RegCreateKeyExW ADVAPI32.dll::RegDeleteKeyW ADVAPI32.dll::RegOpenKeyExW ADVAPI32.dll::RegQueryValueExW ADVAPI32.dll::RegSetValueExW
WIN_USER_API	Performs GUI Actions	USER32.dll::BlockInput USER32.dll::CloseDesktop USER32.dll::CreateMenu USER32.dll::EmptyClipboard USER32.dll::FindWindowExW USER32.dll::FindWindowW

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