MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547. 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 30 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547
SHA3-384 hash: 56e264ba50fdcc8d7dd99f2d08c057505efc517485553374798fee17c9a127c287c86f3e7f4328c29621e6d954d3cb01
SHA1 hash: 56452775610aa2c727ab00b1dfa57d7ef3c7b62c
MD5 hash: 83a4038d2f875d6e6ef8648d6a9e22b6
humanhash: stairway-coffee-cup-kentucky
File name:PROFORMA INVOICE - - CNWES073 (25-6-24).exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'952'768 bytes
First seen:2024-06-25 06:28:11 UTC
Last seen:2024-06-25 07:29:30 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 8f2ed59ffaf0389477f5411c8b4c37fd (3 x AgentTesla, 3 x Formbook, 3 x RemcosRAT)
ssdeep 49152:zOD+bTI6YTDml4HJPHDQkOBU0f9iygcrxZ3aU5Z5IrRo2ht171vvkXziEIw03s:qv85yEz03
Threatray 6 similar samples on MalwareBazaar
TLSH T13A95BE15E3E801A8E577EB34CA629333CAB1B8561730E58F065CD2452F73EA19B7B325
TrID 72.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
13.2% (.EXE) Win64 Executable (generic) (10523/12/4)
6.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
2.5% (.EXE) OS/2 Executable (generic) (2029/13)
2.5% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
346
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547.exe
Verdict:
Suspicious activity
Analysis date:
2024-06-25 06:30:55 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/875b3044-5979-4a63-9faf-f27d7d8eff52

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.PWSX-gen.1786.3468.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=667a63b28bee61523c5d229ewin7simulatehigh_evasion
Tags:
Encryption Execution Generic Network Static Swotter
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a process with a hidden window
Launching a process
Сreating synchronization primitives
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:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
hacktool lolbin masquerade microsoft_visual_cc packed regedit remote shell32
Link:
https://www.filescan.io/uploads/667a63b46b8dba248b45320c/reports/29efe40d-aede-4edb-8697-1bf2913a11ef/overview
Verdict:
Malicious
Labled as:
Win64/GenKryptik.GYXR trojan
Link:
https://www.hybrid-analysis.com/sample/049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/54b93426-2531-40a6-bbcb-a7d9bbd2c9ef
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1462175
Signature
Adds a directory exclusion to Windows Defender
AI detected suspicious sample
Allocates memory in foreign processes
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1462175 Sample: PROFORMA INVOICE -  - CNWES... Startdate: 25/06/2024 Architecture: WINDOWS Score: 96 21 Malicious sample detected (through community Yara rule) 2->21 23 Multi AV Scanner detection for submitted file 2->23 25 Yara detected FormBook 2->25 27 4 other signatures 2->27 7 PROFORMA INVOICE -  - CNWES073 (25-6-24).exe 1 2->7         started        process3 signatures4 29 Writes to foreign memory regions 7->29 31 Allocates memory in foreign processes 7->31 33 Adds a directory exclusion to Windows Defender 7->33 35 Injects a PE file into a foreign processes 7->35 10 powershell.exe 23 7->10         started        13 conhost.exe 7->13         started        15 ngen.exe 7->15         started        process5 signatures6 37 Loading BitLocker PowerShell Module 10->37 17 conhost.exe 10->17         started        19 WmiPrvSE.exe 10->19         started        process7
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547/
Threat name:
Win64.Trojan.Swotter
Create hunting rule
Status:
Malicious
First seen:
2024-06-25 00:54:02 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
8 of 24 (33.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=asnmvryth7vimoj7y7xj2ihyjvuaw4jegetmtrrumxelcphw2vdq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
43beb947dc500c4f52f48aa53d1e7784c954d38bf4ef9166c6e1be2f974cb332
Formbook
904b8e3088d91ab3b5c0929d7bf5b8fe47d11a481e72a9a7084bb6d07b014169
Formbook
d0b94b855d2f24add1edf6b3a6ecae24e4366f181a1ccd0bcd3b27e94de95bc0
Formbook
Result
Malware family:
n/a
Score:
  8/10
Tags:
execution
Link:
https://tria.ge/reports/240625-g8xlssxhkm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Command and Scripting Interpreter: PowerShell
Unpacked files
SH256 hash:
049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547
MD5 hash:
83a4038d2f875d6e6ef8648d6a9e22b6
SHA1 hash:
56452775610aa2c727ab00b1dfa57d7ef3c7b62c
Link:
https://www.unpac.me/results/8dfc25c7-8585-4877-acd8-742801b92f5d/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/049acac7133f/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/049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
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__MemoryWorkingSet
Create hunting rule
Author:Fernando Mercês
Description:Anti-debug process memory working set size check
Reference:http://www.gironsec.com/blog/2015/06/anti-debugger-trick-quicky/
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:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
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:NET
Create hunting rule
Author:malware-lu
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:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
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_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

Executable exe 049acac7133fea86393fc7ee9d20f84d680b71243126c9c63465c8b13cf6d547

(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
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::CreateWellKnownSid
ADVAPI32.dll::RevertToSelf
ADVAPI32.dll::GetSecurityDescriptorLength
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetWindowsAccountDomainSid
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
ADVAPI32.dll::SetThreadToken
KERNEL32.dll::VirtualAllocExNuma
KERNEL32.dll::CloseHandle
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::DeleteVolumeMountPointW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetVolumeInformationW
KERNEL32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::AllocConsole
KERNEL32.dll::FreeConsole
KERNEL32.dll::GetConsoleOutputCP
KERNEL32.dll::GetConsoleWindow
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileExW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileExW
KERNEL32.dll::ReplaceFileW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptDecrypt
bcrypt.dll::BCryptDestroyKey
bcrypt.dll::BCryptGenRandom
bcrypt.dll::BCryptOpenAlgorithmProvider
bcrypt.dll::BCryptCloseAlgorithmProvider
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyExW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryInfoKeyW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExA
ADVAPI32.dll::RegSetValueExW

Comments