MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a. 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 21 File information Comments

SHA256 hash:	c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a
SHA3-384 hash:	15044ac502025c1b96595c6c7080e7de40bf2f8c4001022a7f42a5847ce21e69416240b3f4abe4d25508c0ad5fd2d785
SHA1 hash:	00751d38864cfe890150b2e4d1bcd05c09bc80bc
MD5 hash:	e2fec48293a8580213ee6fa61b37b776
humanhash:	summer-four-oregon-hot
File name:	rScan_Rev20220731_POOC88SU7782743882874_JPEG.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'116'683 bytes
First seen:	2025-01-23 02:00:14 UTC
Last seen:	Never
File type:	exe
MIME type:	application/x-dosexec
imphash	d3bf8a7746a8d1ee8f6e5960c3f69378 (247 x Formbook, 75 x AgentTesla, 64 x SnakeKeylogger)
ssdeep	24576:uRmJkcoQricOIQxiZY1iaCCudvbmcRXrAd9FTlHDKJ:7JZoQrbTFZY1iaCvpmcprAd9FTtM
TLSH	T12035E122F5D68036C2B327B19E7EF7A6963D79360336D29B23C42D315EA05416B29733
TrID	47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13) 15.9% (.EXE) Win64 Executable (generic) (10522/11/4) 9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 7.6% (.EXE) Win16 NE executable (generic) (5038/12/1) 6.8% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika	pebin
File icon (PE):
dhash icon	b150b26869b2d471 (468 x Formbook, 101 x RedLineStealer, 94 x AgentTesla)
Reporter	FXOLabs
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

558

Origin country :

Vendor Threat Intelligence

Malware family:

n/a

ID:

File name:

Mensajes en cuarentena(10).zip

Verdict:

Suspicious activity

Analysis date:

2025-01-23 11:59:36 UTC

Tags:

attachments attc-unc arch-exec

Link:

https://app.any.run/tasks/e1cf7275-3b14-49a6-aaf8-f38edd45dc24

Note:

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

Verdict:

Malicious

Score:

99.1%

Link:

https://cyber-fortress.com/docs/result/index.php?id=6791a606e708b6e7a3b003e6

Tags:

nymeria autoit emotet

Result

Verdict:

Malware

Maliciousness:

Behaviour

Creating a window

Creating a file in the %temp% directory

Launching a process

Сreating synchronization primitives

Launching cmd.exe command interpreter

Setting browser functions hooks

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 cmd compiled-script evasive fingerprint keylogger lolbin masquerade microsoft_visual_cc overlay packed packer_detected pcalua reg

Link:

https://www.filescan.io/uploads/6791a2def6fdc1ccd52a9e9b/reports/9fd82029-9bdd-43a9-84ac-a2a55a15f857/overview

Verdict:

Malicious

Labled as:

AIT:Trojan.Nymeria

Link:

https://www.hybrid-analysis.com/sample/c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a

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

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/1a971ae8-3423-4556-8f19-d7780a888026

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1597224

Signature

AI detected suspicious sample

Antivirus / Scanner detection for submitted sample

Antivirus detection for URL or domain

C2 URLs / IPs found in malware configuration

Found malware configuration

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)

Sample uses process hollowing technique

Suricata IDS alerts for network traffic

Switches to a custom stack to bypass stack traces

Tries to detect virtualization through RDTSC time measurements

Tries to resolve many domain names, but no domain seems valid

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a/

Threat name:

Win32.Backdoor.FormBook

Status:

Malicious

First seen:

2025-01-23 01:35:35 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

25 of 38 (65.79%)

Threat level:

5/5

Detection(s):

Suspicious file

Link:

https://check.spamhaus.org/check/?searchterm=yqm2iwpa6ippucsn6njwpulapvmztw6crizfxhngd3j7l6nzxi5a._file

Verdict:

malicious

Label(s):

admintool_powerrun

unknown_loader_036

formbook

Similar samples:

error

Formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:a38m discovery rat spyware stealer trojan

Link:

https://tria.ge/reports/250123-cfjf9axpaq/

Behaviour

Gathers network information

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

Formbook payload

Formbook

Formbook family

Verdict:

Suspicious

Tags:

n/a

YARA:

n/a

Link:

https://app.threat.zone/submission/bccee7d3-06bc-4a58-a722-6a7fca6ae9f6

Unpacked files

SH256 hash:

775a99ad1f7dfe3e12db7aed6dbb7c4da65cba40f0c28c7db82f2f0516ad1d86

MD5 hash:

8c0566584f02a5457fb09fc470d36d14

SHA1 hash:

dc24b1c855b4786909ebac0635494973ec800ff1

Detections:

FormBook

win_formbook_auto

win_formbook_g0

win_formbook_w0

Windows_Trojan_Formbook

Formbook

Link:

https://www.unpac.me/results/e04b12ff-99df-43e3-a85e-6846f0bc33b8/

Parent samples :

b73b18876f5bcefc703154fb97f8747b2e385ef0d494e4b7642a0a5879ffe260
c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a
2f821a2fe9c043b3d733b026c68f56b48ec6dedeb63518590fdcbec615b7919b
49c3a7ea74d668d9074b276fd7e7c620a0290171a406290d71a8ac5c9c54a175
c46750639d660e92cfb0e41eb1fc67c554589196345e03fe8af00faa1926fbc5
6cddedafbaf4288abf28e2ba392414c385e7a003c822ea1b63109bf214e11994

SH256 hash:

c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a

MD5 hash:

e2fec48293a8580213ee6fa61b37b776

SHA1 hash:

00751d38864cfe890150b2e4d1bcd05c09bc80bc

Link:

https://www.unpac.me/results/e04b12ff-99df-43e3-a85e-6846f0bc33b8/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/c419a459e0f2/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/c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a

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 Create hunting rule
Author:	Jean-Philippe Teissier / @Jipe_
Description:	AutoIT packer

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:	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_detect_tls_callbacks 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:	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

exe c419a459e0f21efa0a4df35367d1607d5999dbc28a325b9da61ed3f5f9b9ba3a

(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

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
CHECK_PIE	Missing Position-Independent Executable (PIE) Protection	high

Reviews

ID	Capabilities	Evidence
AUTH_API	Manipulates User Authorization	ADVAPI32.dll::CopySid ADVAPI32.dll::GetLengthSid ADVAPI32.dll::GetAce USER32.dll::GetUserObjectSecurity ADVAPI32.dll::InitializeAcl ADVAPI32.dll::InitializeSecurityDescriptor
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::DuplicateTokenEx ADVAPI32.dll::GetAclInformation ADVAPI32.dll::GetSecurityDescriptorDacl ADVAPI32.dll::GetTokenInformation
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::LoadLibraryW KERNEL32.dll::LoadLibraryExW KERNEL32.dll::LoadLibraryA KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_API	Can Execute other programs	KERNEL32.dll::WriteConsoleW KERNEL32.dll::SetStdHandle KERNEL32.dll::GetConsoleCP KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_API	Can Create Files	KERNEL32.dll::CopyFileW KERNEL32.dll::CreateDirectoryW KERNEL32.dll::CreateHardLinkW KERNEL32.dll::CreateFileW KERNEL32.dll::DeleteFileW KERNEL32.dll::MoveFileW
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_SVC_API	Can Manipulate Windows Services	ADVAPI32.dll::OpenSCManagerW ADVAPI32.dll::UnlockServiceDatabase
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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