MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433. 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: 16

Intelligence 16 IOCs YARA 21 File information Comments

SHA256 hash:	99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433
SHA3-384 hash:	5c664324a9bc319c6c57864dc5316f07b3b8a9765fd31a9e1ac4ca47cf6b4a3eb41380b486683fa2e212cedd8061d2f3
SHA1 hash:	0556c77bab07dd97230df5ebff60b38298e79f25
MD5 hash:	943efcacb9b6e31fd1fb06603641f259
humanhash:	may-carbon-nineteen-pizza
File name:	Purchase Order For Consumables Eltra 008363725_9645364782_1197653623_836652746_22994644.exe
Download:	download sample
Signature	Formbook Create hunting rule
File size:	1'190'912 bytes
First seen:	2024-05-03 07:12:25 UTC
Last seen:	2024-05-03 07:29:18 UTC
File type:	exe
MIME type:	application/x-dosexec
imphash	948cc502fe9226992dce9417f952fce3 (1'182 x CredentialFlusher, 446 x Formbook, 231 x AgentTesla)
ssdeep	24576:DqDEvCTbMWu7rQYlBQcBiT6rprG8arAcTMFku9In:DTvC/MTQYxsWR7arA2M+
TLSH	T13745BF0273D1C062FFAB91734B5AF61157BC69260123E62F13A81D7ABE701B1563E7A3
TrID	68.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19) 12.5% (.EXE) Win64 Executable (generic) (10523/12/4) 6.0% (.EXE) Win16 NE executable (generic) (5038/12/1) 5.3% (.EXE) Win32 Executable (generic) (4504/4/1) 2.4% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):
dhash icon	aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter	threatcat_ch
Tags:	exe FormBook

Intelligence

File Origin

# of uploads :

# of downloads :

363

Origin country :

Vendor Threat Intelligence

Malware family:

formbook

ID:

File name:

99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433.exe

Verdict:

Malicious activity

Analysis date:

2024-05-03 07:15:08 UTC

Tags:

formbook xloader

Link:

https://app.any.run/tasks/7de26ef9-29c7-4b5a-b700-4498f99cb849

Note:

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

Detection(s):

SecuriteInfo.com.Trojan.Generic.33203615.28472.17882.UNOFFICIAL

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

Forced shutdown of a system process

Unauthorized injection to a system process

Unauthorized injection to a browser process

Verdict:

Suspicious

Threat level:

5/10

Confidence:

100%

Tags:

autoit fingerprint keylogger lolbin masquerade packed risepro shell32

Link:

https://www.filescan.io/uploads/66348e80ca951b85945c53bd/reports/da12b705-17a6-4fe6-b194-c932b34bb244/overview

Verdict:

Malicious

Labled as:

Malware

Link:

https://www.hybrid-analysis.com/sample/99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433

Malware family:

Formbook

Verdict:

Malicious

Link:

https://analyze.intezer.com/analyses/fbca647b-5942-4036-a290-93a82864eceb

Result

Threat name:

FormBook

Detection:

malicious

Classification:

troj.evad

Score:

100 / 100

Link:

https://www.joesandbox.com/analysis/1435817

Signature

Binary is likely a compiled AutoIt script file

C2 URLs / IPs found in malware configuration

Found API chain indicative of sandbox detection

Found malware configuration

Initial sample is a PE file and has a suspicious name

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)

Modifies the prolog of user mode functions (user mode inline hooks)

Multi AV Scanner detection for submitted file

Queues an APC in another process (thread injection)

Sample uses process hollowing technique

Snort IDS alert for network traffic

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

Tries to detect virtualization through RDTSC time measurements

Writes to foreign memory regions

Yara detected FormBook

Behaviour

Behavior Graph:

Download SVG

Score:

100%

Verdict:

Malware

File Type:

Link:

https://malprob.io/report/99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433

Detection:

n/a

Link:

https://mwdb.cert.pl/sample/99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433/

Threat name:

Win32.Trojan.Generic

Status:

Malicious

First seen:

2024-05-03 06:07:34 UTC

File Type:

PE (Exe)

Extracted files:

AV detection:

18 of 24 (75.00%)

Threat level:

2/5

Detection(s):

Malicious file

Link:

https://check.spamhaus.org/check/?searchterm=tgwugqk5h7hb3zfrlmtisp3a4etgixycqybkpih77fbsxgkagqzq._file

Verdict:

malicious

Label(s):

formbook

Result

Malware family:

formbook

Score:

10/10

Tags:

family:formbook campaign:se63 rat spyware stealer trojan

Link:

https://tria.ge/reports/240503-h13nhshf9s/

Behaviour

Suspicious behavior: EnumeratesProcesses

Suspicious behavior: MapViewOfSection

Suspicious use of AdjustPrivilegeToken

Suspicious use of UnmapMainImage

Suspicious use of WriteProcessMemory

Program crash

Suspicious use of SetThreadContext

Formbook payload

Formbook

Unpacked files

SH256 hash:

c8dde6a946109da23857b8b79ae4c374a5bf4af833e4e337a4980ebbad876c20

MD5 hash:

3d1bc796ed3c8417268c61ccb3d0eeb9

SHA1 hash:

7b8a8f10c221f240661aecf7f285e48fcf6c1e87

Detections:

FormBook

win_formbook_w0

win_formbook_auto

win_formbook_g0

Formbook

Link:

https://www.unpac.me/results/a015acf5-96e3-42af-98e0-2ba07c764e43/

Parent samples :

3406373bb1aa978bb8c76dc322a7ddcd053b2ba782516980572bb4e79b742ffc
f6723f25605e46b8bdd2a8a875ee319c40108491934b2f8fbcdd58d649cbc651
99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433
8650787630e554e6390a6d98c7b556f36af59ce72998c4660cbec74091cb2b09
68773735efbd467e3286df5cbd2cc678926f0821ebbc9c2633b215b31d0b7d45

SH256 hash:

99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433

MD5 hash:

943efcacb9b6e31fd1fb06603641f259

SHA1 hash:

0556c77bab07dd97230df5ebff60b38298e79f25

Detections:

AutoIT_Compiled

Link:

https://www.unpac.me/results/a015acf5-96e3-42af-98e0-2ba07c764e43/

Malware family:

FormBook

Verdict:

Malicious

Link:

https://www.vmray.com/analyses/_mb/99ad43415d3f/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/99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433

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:	crime_win32_ransom_avaddon_1 Create hunting rule
Author:	@VK_Intel
Description:	Detects Avaddon ransomware
Reference:	https://twitter.com/VK_Intel/status/1300944441390370819

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:	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:	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:	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 99ad43415d3fce1de4b15b26893f60e126645f028602a7a0fff9432b99403433

(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

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::LoadLibraryW KERNEL32.dll::LoadLibraryExW 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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