MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f. 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: 15


Intelligence 15 IOCs YARA 7 File information Comments
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SHA256 hash: 681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f
SHA3-384 hash: 1366ffa37322b337e9120ee5e164d64fb6cb994b49c1f3ba38bb6ad79ed1b1cc2a5cb19b318c91d54e07cca44cf20eeb
SHA1 hash: 469d5b8bcccd55d7011da4d94f3887f13f46a4c0
MD5 hash: 1c567c3125ba8df24b57b40ef08fb547
humanhash: violet-louisiana-golf-california
File name:PO#5182025.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'261'568 bytes
First seen:2025-05-19 06:33:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 3d95adbf13bbe79dc24dccb401c12091 (881 x AgentTesla, 737 x FormBook, 236 x SnakeKeylogger)
ssdeep 24576:Rtb20pkaCqT5TBWgNQ7aMdXDqC9N0fzxWoGxiLfj6A:iVg5tQ7a+X+JfoPqL5
TLSH T1FD45CF2273DE83A4C77252737A25B7016E7B7C2905A5F45B2FD83D3DB930222125EA63
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 68d8d8c8d9a9c1d9 (96 x SnakeKeylogger, 67 x RemcosRAT, 66 x Formbook)
Reporter lowmal3
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
455
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO#5182025.exe
Verdict:
No threats detected
Analysis date:
2025-05-19 06:37:49 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/64649d2d-dda3-4ff6-8ddf-0fe0bcf1bd04

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.PSW.Agent.BORA.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
91.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=682ad25ee5aa44ec2e1adb83
Tags:
autoit emotet
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Launching a process
Сreating synchronization primitives
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
adaptive-context autoit compiled-script fingerprint keylogger microsoft_visual_cc packed packed packer_detected phishing
Link:
https://www.filescan.io/uploads/682ad0e90de036ed65ab5917/reports/e6e3a00e-403b-4952-b816-cbd0ad8dd585/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/b199e276-d896-4f53-a0c9-846f7be3c6a4
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1693756
Signature
Binary is likely a compiled AutoIt script file
Found direct / indirect Syscall (likely to bypass EDR)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Initial sample is a PE file and has a suspicious name
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
Queues an APC in another process (thread injection)
Suricata IDS alerts for network traffic
Switches to a custom stack to bypass stack traces
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1693756 Sample: PO#5182025.exe Startdate: 19/05/2025 Architecture: WINDOWS Score: 100 33 areyouhappy.net 2->33 35 www.jcrz9udq62kegib.skin 2->35 37 4 other IPs or domains 2->37 45 Suricata IDS alerts for network traffic 2->45 47 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 3 other signatures 2->51 11 PO#5182025.exe 2 2->11         started        signatures3 process4 signatures5 63 Binary is likely a compiled AutoIt script file 11->63 65 Writes to foreign memory regions 11->65 67 Maps a DLL or memory area into another process 11->67 69 Switches to a custom stack to bypass stack traces 11->69 14 svchost.exe 11->14         started        process6 signatures7 71 Maps a DLL or memory area into another process 14->71 17 duSHtIO9iEAtZgwxky96m3v.exe 14->17 injected process8 signatures9 43 Found direct / indirect Syscall (likely to bypass EDR) 17->43 20 ROUTE.EXE 13 17->20         started        process10 signatures11 53 Tries to steal Mail credentials (via file / registry access) 20->53 55 Tries to harvest and steal browser information (history, passwords, etc) 20->55 57 Modifies the context of a thread in another process (thread injection) 20->57 59 3 other signatures 20->59 23 duSHtIO9iEAtZgwxky96m3v.exe 20->23 injected 27 chrome.exe 20->27         started        29 firefox.exe 20->29         started        process12 dnsIp13 39 areyouhappy.net 3.33.130.190, 49693, 80 AMAZONEXPANSIONGB United States 23->39 41 curp.gob.mx 187.237.136.97, 80 UninetSAdeCVMX Mexico 23->41 61 Found direct / indirect Syscall (likely to bypass EDR) 23->61 31 WerFault.exe 4 27->31         started        signatures14 process15
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f/
Threat name:
Win32.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-05-19 04:38:47 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
20 of 37 (54.05%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=naoyk3773ctpc3z3b5rpnkwvzunnwbbl4uclh2o4xrpni2oxiuhq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
unc_loader_036
Create hunting rule
autoit
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250519-hbtz3sbj4t/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/d514164a-6caa-4a85-8733-10230ce21f9d
Unpacked files
SH256 hash:
681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f
MD5 hash:
1c567c3125ba8df24b57b40ef08fb547
SHA1 hash:
469d5b8bcccd55d7011da4d94f3887f13f46a4c0
Link:
https://www.unpac.me/results/02d433e7-8b27-4f09-986e-132bcc999f54/
SH256 hash:
c67674380f2124bac258b230dbcd75f91668c93962747733eef243a796b13c89
MD5 hash:
974caa48358492c280531948b40dc5d1
SHA1 hash:
6b47166dde69e45066f08ebe64c225187a1aa3c6
Link:
https://www.unpac.me/results/02d433e7-8b27-4f09-986e-132bcc999f54/
SH256 hash:
8dc25bfa12ac5ca20d3e4c9203aab8b4e37e354858d5929033f574bdfce12dcb
MD5 hash:
7e0d9bbbee8933f58d44a3f099acd815
SHA1 hash:
da91c82a41e9a60e3c874929a8a1fab948fbe8a4
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/02d433e7-8b27-4f09-986e-132bcc999f54/
Parent samples :
cf9e29c9c2315237b9230d3f01e55c60f5e7c89b980ce78912258b1bee2f4124
681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f
3fc89ad938129437b93f26db8776fc6aa89bd3811b2f1dede0541b5a088aa983
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/681d856fffd8/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/681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f

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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
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.

Malspam

Formbook

Executable exe 681d856fffd8a6f16f3b0f62f6aad5cd1adb042be504b3e9dcbc5ed469d7450f

(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 (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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