MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86. 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 18 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86
SHA3-384 hash: 86ddf89090592455b61d5982518c895f2d00fbe2c7dcba398b132784a62c7da85eb6b1d894a8f6e255a46179deb1bf5f
SHA1 hash: e54f5963c6382d277d1cc76692691e96274c114e
MD5 hash: 729879c904325aab4786b3d538e8168a
humanhash: stream-spaghetti-shade-beer
File name:21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86
Download: download sample
Signature Formbook
Create hunting rule
File size:1'084'416 bytes
First seen:2025-06-10 09:51:06 UTC
Last seen:2025-06-10 10:20:23 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep 12288:rtb20Qc3lT7af41ePBRYuQLKpqeUhbTv5OFgNuPPpHSgaF7m2UrWPrDzmB7KCXt5:rtb20pkaCqT5TBWgNQ7aZmXaPSTt6A
TLSH T1AA35CF1373DEC360C7725273BA257B01AEBF782506A5F46B2FD8093DE920162525EA73
TrID 40.3% (.EXE) Win64 Executable (generic) (10522/11/4)
19.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
17.2% (.EXE) Win32 Executable (generic) (4504/4/1)
7.7% (.EXE) OS/2 Executable (generic) (2029/13)
7.6% (.EXE) Generic Win/DOS Executable (2002/3)
Magika pebin
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
415
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86
Verdict:
No threats detected
Analysis date:
2025-06-05 14:08:47 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d7e6e38f-797a-485a-8fd4-c76fa685ccbe

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/8610/
Detection(s):
Win.Trojan.Autoit-10033284-0
Create hunting rule

SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=684800228bd5d68a12e765ae
Tags:
phishing 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:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/4f3b4b71-e634-4f06-b5db-fbbf037781ac
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1710734
Signature
Binary is likely a compiled AutoIt script file
C2 URLs / IPs found in malware configuration
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 submitted file
Performs DNS queries to domains with low reputation
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Uses netsh to modify the Windows network and firewall settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1710734 Sample: Rwx3KsXtN7.exe Startdate: 10/06/2025 Architecture: WINDOWS Score: 100 27 www.bt1473.xyz 2->27 29 www.bss1317.xyz 2->29 31 10 other IPs or domains 2->31 35 Found malware configuration 2->35 37 Malicious sample detected (through community Yara rule) 2->37 39 Multi AV Scanner detection for submitted file 2->39 43 4 other signatures 2->43 11 Rwx3KsXtN7.exe 4 2->11         started        signatures3 41 Performs DNS queries to domains with low reputation 29->41 process4 signatures5 53 Binary is likely a compiled AutoIt script file 11->53 55 Writes to foreign memory regions 11->55 57 Maps a DLL or memory area into another process 11->57 59 Switches to a custom stack to bypass stack traces 11->59 14 svchost.exe 11->14         started        process6 signatures7 61 Modifies the context of a thread in another process (thread injection) 14->61 63 Maps a DLL or memory area into another process 14->63 65 Sample uses process hollowing technique 14->65 67 3 other signatures 14->67 17 explorer.exe 93 1 14->17 injected process8 signatures9 33 Uses netsh to modify the Windows network and firewall settings 17->33 20 netsh.exe 17->20         started        process10 signatures11 45 Modifies the context of a thread in another process (thread injection) 20->45 47 Maps a DLL or memory area into another process 20->47 49 Tries to detect virtualization through RDTSC time measurements 20->49 51 Switches to a custom stack to bypass stack traces 20->51 23 cmd.exe 1 20->23         started        process12 process13 25 conhost.exe 23->25         started       
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2025-05-27 17:36:21 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
21 of 36 (58.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ehj7k7tbzzjfci6rdstnuhn74bnz5fn52wdhgcpdrvm4ifappwda._file
Verdict:
malicious
Label(s):
autoit
Create hunting rule
unc_loader_036
Create hunting rule
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:dy23 discovery rat spyware stealer trojan
Link:
https://tria.ge/reports/250610-lvl1csszet/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of UnmapMainImage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Formbook payload
Formbook
Formbook family
Verdict:
Malicious
Tags:
Win.Trojan.Autoit-10033284-0
YARA:
n/a
Link:
https://app.threat.zone/submission/6e823264-7cb5-45f6-9f9e-a8dae1dc9846
Unpacked files
SH256 hash:
21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86
MD5 hash:
729879c904325aab4786b3d538e8168a
SHA1 hash:
e54f5963c6382d277d1cc76692691e96274c114e
Link:
https://www.unpac.me/results/4144e6ea-6415-466e-859e-98b611a954d8/
SH256 hash:
d5f45e8d1ebc6e27963fa4cc1bb9ac420801389de2f068a6d470b7c3d20ab51b
MD5 hash:
391726776e5e542e7173a5e15f154a79
SHA1 hash:
5fe9bc77752d45b556fc1b005c528860b5bc2a25
Detections:
win_formbook_w0
Create hunting rule
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
FormBook
Create hunting rule
Formbook
Create hunting rule
Windows_Trojan_Formbook
Create hunting rule
Link:
https://www.unpac.me/results/4144e6ea-6415-466e-859e-98b611a954d8/
Parent samples :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 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/21d3f57e61ce525123d11ca6da1dbfe05b9e95bdd5867309e38d59c4140f7d86

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
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:dgaagas
Create hunting rule
Author:Harshit
Description:Uses certutil.exe to download a file named test.txt
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: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:YahLover
Create hunting rule
Author:Kevin Falcoz
Description:YahLover

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/8610/

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 (HIGH_ENTROPY_VA)high
CHECK_NXMissing Non-Executable Memory Protectioncritical
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::AllocateAndInitializeSid
ADVAPI32.dll::CopySid
ADVAPI32.dll::FreeSid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetTokenInformation
ADVAPI32.dll::GetAce
COM_BASE_APICan Download & Execute componentsole32.dll::CLSIDFromProgID
ole32.dll::CoCreateInstance
ole32.dll::CoCreateInstanceEx
ole32.dll::CoInitializeSecurity
ole32.dll::CreateStreamOnHGlobal
MULTIMEDIA_APICan Play MultimediaWINMM.dll::mciSendStringW
WINMM.dll::timeGetTime
WINMM.dll::waveOutSetVolume
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AddAce
ADVAPI32.dll::AdjustTokenPrivileges
ADVAPI32.dll::CheckTokenMembership
ADVAPI32.dll::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::ShellExecuteW
SHELL32.dll::SHFileOperationW
WIN32_PROCESS_APICan Create Process and ThreadsADVAPI32.dll::CreateProcessAsUserW
KERNEL32.dll::CreateProcessW
ADVAPI32.dll::CreateProcessWithLogonW
KERNEL32.dll::OpenProcess
ADVAPI32.dll::OpenProcessToken
ADVAPI32.dll::OpenThreadToken
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::SetSystemPowerState
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::ReadConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
WIN_BASE_USER_APIRetrieves Account InformationKERNEL32.dll::GetComputerNameW
ADVAPI32.dll::GetUserNameW
ADVAPI32.dll::LogonUserW
ADVAPI32.dll::LookupPrivilegeValueW
WIN_NETWORK_APISupports Windows NetworkingMPR.dll::WNetAddConnection2W
MPR.dll::WNetUseConnectionW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegConnectRegistryW
ADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

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