MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce. 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 26 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce
SHA3-384 hash: 2f4dfaab7249a7adaba48a7460078e30be0c1d508bff19a65064ee956bc7fbed9586f93b4e221d0c1c85943bfc17fe9c
SHA1 hash: c73700a78a391e61b9ca3535c8d26dde12035808
MD5 hash: 2d8c7cd70698ef3b6d1a3e042de0a93a
humanhash: nineteen-montana-nebraska-beryllium
File name:PO454355 Pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:2'404'352 bytes
First seen:2024-07-02 13:44:35 UTC
Last seen:2024-07-02 14:21:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 97f00b2383bd4369e5094078fdccae7a (2 x RedLineStealer, 2 x Formbook, 1 x AsyncRAT)
ssdeep 49152:EF50a6aPVOFMx3SmroCZscivbS6mqxEWoKmqZJffp3vSsqPUxeaw1GnNOmyVS5ks:2roA7PqryV2
Threatray 37 similar samples on MalwareBazaar
TLSH T19EB5AD15E3E801A8D87BD634CA62A333DBB078961730D58F0659D6592F73EA19B3F312
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 :
378
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce.exe
Verdict:
No threats detected
Analysis date:
2024-07-02 13:45:13 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/6b37afc5-1e36-47eb-967d-9cdb245c696c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.RATX-gen.19178.19512.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66840465251d4687fe42e4aewin10vpnfull_triage
Tags:
Execution Network Static
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the 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
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
fingerprint hacktool lolbin microsoft_visual_cc packed regedit remote shell32
Link:
https://www.filescan.io/uploads/6684046049a1c83062696576/reports/cb60ae79-59bb-4ba2-adb3-0a68cdcb1bab/overview
Verdict:
Malicious
Labled as:
Dacic.3214.Generic
Link:
https://www.hybrid-analysis.com/sample/657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce
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/bc400e40-8dff-4a2c-b179-7d441fe11f87
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
72 / 100
Link:
https://www.joesandbox.com/analysis/1466132
Signature
AI detected suspicious sample
Allocates memory in foreign processes
Injects a PE file into a foreign processes
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic
Writes to foreign memory regions
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1466132 Sample: PO454355 Pdf.exe Startdate: 02/07/2024 Architecture: WINDOWS Score: 72 17 15.164.165.52.in-addr.arpa 2->17 19 Snort IDS alert for network traffic 2->19 21 Multi AV Scanner detection for submitted file 2->21 23 AI detected suspicious sample 2->23 8 PO454355 Pdf.exe 1 2->8         started        signatures3 process4 signatures5 25 Writes to foreign memory regions 8->25 27 Allocates memory in foreign processes 8->27 29 Injects a PE file into a foreign processes 8->29 11 csc.exe 8->11         started        13 conhost.exe 8->13         started        process6 process7 15 WerFault.exe 23 18 11->15         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce/
Threat name:
Win64.Trojan.Stealerc
Create hunting rule
Status:
Malicious
First seen:
2024-07-02 07:15:14 UTC
File Type:
PE+ (Exe)
Extracted files:
1
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mv7r7xojkzx3ieuycsanzrxwmabbtrxfzj2wa4h6lmk3vkryipha._file
Verdict:
malicious
Similar samples:
1669d57e8c83d0666c86fafcd484a5fd158c995a58ad9a6855c56d849c00b40b
Formbook
3cb485a769f6e92536f586f2873bd6a4d8fb5b106773ac0a16a534ef351c0bf1
Formbook
542ddd41bf8603c95458d6c2c15e1a0cff107fbabac55b69b92bd40fd8bf1696
Formbook
bea6547e13a91dea30b43f7b50a6e95d8cbc285c9a2c397fa52d17ce8351cc30
Formbook
+ 27 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240702-q2dd1sygnn/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/75a6b46b-8e51-4c80-a344-ab056aba1112
Unpacked files
SH256 hash:
657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce
MD5 hash:
2d8c7cd70698ef3b6d1a3e042de0a93a
SHA1 hash:
c73700a78a391e61b9ca3535c8d26dde12035808
Link:
https://www.unpac.me/results/bf908460-f4d2-4765-be96-70366def1d3a/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/657f1fddc956/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/657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce

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:Jupyter_infostealer
Create hunting rule
Author:CD_R0M_
Description:Rule for Jupyter Infostealer/Solarmarker malware from september 2021-December 2022
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: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

File information

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

Malspam

Formbook

Executable exe 657f1fddc9566fb412981480dcc6f6600219c6e5ca756070fe5b15baaa3843ce

(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::BCryptEncrypt
bcrypt.dll::BCryptGenRandom
bcrypt.dll::BCryptImportKey
bcrypt.dll::BCryptOpenAlgorithmProvider
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

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