MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db. 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: 13


Intelligence 13 IOCs YARA 10 File information Comments
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SHA256 hash: a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db
SHA3-384 hash: 630be5e4ebe86c236d809300d826098569b47195f602e6a9f2213a8928f9f7a73b01dc64e426d4d9927cb9baf92b0bc6
SHA1 hash: 8674ca7556e82403ed275316d91a09f854ee19da
MD5 hash: 21215e1731e47268a78dd9c0811e569e
humanhash: cola-failed-kitten-victor
File name:rPO007-22_25_pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'180'160 bytes
First seen:2025-04-22 11:30:08 UTC
Last seen:2025-05-09 13:27:08 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:3u6J33O0c+JY5UZ+XC0kGso6FaT/Gg367P+wxU14glWY:Ru0c++OCvkGs9FaTO42PnE4BY
TLSH T1E445BE2273DDC360CB769273BF69B7016EBF78214630B95B2F880D7DA950161262D7A3
TrID 32.2% (.EXE) Win64 Executable (generic) (10522/11/4)
20.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
13.7% (.EXE) Win32 Executable (generic) (4504/4/1)
6.2% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter FXOLabs
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
3
# of downloads :
478
Origin country :
BR BR
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/3406/
Detection(s):
SecuriteInfo.com.BehavesLike.Win32.Generic.vh.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68077f6d892d799f537ab568
Tags:
underscore 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:
Unknown
Link:
https://www.hybrid-analysis.com/sample/a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/33d9555b-4ea7-471d-a27d-9388dd952ea9
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1670994
Signature
Binary is likely a compiled AutoIt script file
Found direct / indirect Syscall (likely to bypass EDR)
Initial sample is a PE file and has a suspicious name
Joe Sandbox ML detected suspicious sample
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)
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: 1670994 Sample: rPO007-22_25_pdf.exe Startdate: 22/04/2025 Architecture: WINDOWS Score: 100 28 www.propriis.xyz 2->28 30 www.earnpet.xyz 2->30 32 14 other IPs or domains 2->32 42 Suricata IDS alerts for network traffic 2->42 44 Multi AV Scanner detection for submitted file 2->44 46 Yara detected FormBook 2->46 50 3 other signatures 2->50 10 rPO007-22_25_pdf.exe 4 2->10         started        signatures3 48 Performs DNS queries to domains with low reputation 30->48 process4 signatures5 62 Binary is likely a compiled AutoIt script file 10->62 64 Writes to foreign memory regions 10->64 66 Maps a DLL or memory area into another process 10->66 68 Switches to a custom stack to bypass stack traces 10->68 13 svchost.exe 10->13         started        process6 signatures7 70 Maps a DLL or memory area into another process 13->70 16 TNI4lrUD13j7HJMzhUNjk.exe 13->16 injected process8 signatures9 40 Found direct / indirect Syscall (likely to bypass EDR) 16->40 19 ieUnatt.exe 13 16->19         started        process10 signatures11 52 Tries to steal Mail credentials (via file / registry access) 19->52 54 Tries to harvest and steal browser information (history, passwords, etc) 19->54 56 Modifies the context of a thread in another process (thread injection) 19->56 58 3 other signatures 19->58 22 TNI4lrUD13j7HJMzhUNjk.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 34 www.worrr41.autos 168.76.121.210, 49739, 49740, 49741 ULTRANETSERVICOSEMINTERNETLTDABR South Africa 22->34 36 www.jellbit.site 162.0.225.218, 49731, 49732, 49733 NAMECHEAP-NETUS Canada 22->36 38 8 other IPs or domains 22->38 60 Found direct / indirect Syscall (likely to bypass EDR) 22->60 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db/
Threat name:
Win32.Trojan.Malgent
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Status:
Malicious
First seen:
2025-04-22 10:07:04 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
20 of 24 (83.33%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vfddhqu7sj4eghlstz5ailvojzf7lgxdnvkt3mj5jrcj7yz2ixnq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
error
Formbook
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/250422-nmebnaxqs8/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
trojan
YARA:
SUSP_Imphash_Mar23_3
Link:
https://app.threat.zone/submission/27a342fc-ea9d-4240-b501-f6335a9d8051
Unpacked files
SH256 hash:
a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db
MD5 hash:
21215e1731e47268a78dd9c0811e569e
SHA1 hash:
8674ca7556e82403ed275316d91a09f854ee19da
Link:
https://www.unpac.me/results/2d5b3807-f739-478a-8b76-1cf5946fbe28/
SH256 hash:
22b6d8f6b09bcf72189389b64175f70bca1924e91826a99df69d85c73b526e06
MD5 hash:
d7324a4dd74edb815d79e2e922aa2fa8
SHA1 hash:
e3a7875b6fdce4d3de211b900cd310dec7baa5e7
Link:
https://www.unpac.me/results/2d5b3807-f739-478a-8b76-1cf5946fbe28/
SH256 hash:
6abf291f17b9927f6098d744692d4ae96d742765b6a9614844b4527335ed826c
MD5 hash:
9219351eedcbc449622b96eed6ba4016
SHA1 hash:
194955e4e1813cc1f3b7e0f0797570fbba4d6783
Detections:
win_formbook_g0
Create hunting rule
Link:
https://www.unpac.me/results/2d5b3807-f739-478a-8b76-1cf5946fbe28/
Parent samples :
a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db
c892f300b3deba96f8b67f0bb802db58c8c0828011dc16bdead5ae6f8d7285fe
8ddcd9773b5c9cec6e3d0e4d996038faa74cbe9a971665cf596d8786de25ac01
60c1ab67381887ed5a00e5b6b7e73563985f7a24aee8442713eb28442f9f1eb3
0645b63aa8957b452b02e4c84471cb41fed65b8d36d01aa097a1414885a6e949
6456629099934814560441e96bc302045cdfe87798caf1227ac028990efd1c49
a5fdeddda201a56e42451f2a8ddad6ec11449af0c43895e57a186f99b03904ca
eed9a19a853515be2773e52c0cdd58708f7e6fd5f65df8c0f8c81ea292fc5c4d
d74e403ce82ed74129c625e6808a9bcf3bccbf271f17557341850a4e68c72ecc
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a94633c29f92/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/a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db

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:SUSP_Imphash_Mar23_3
Create hunting rule
Author:Arnim Rupp (https://github.com/ruppde)
Description:Detects imphash often found in malware samples (Maximum 0,25% hits with search for 'imphash:x p:0' on Virustotal) = 99,75% hits
Reference:Internal Research
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:testing_win_formbook_autoit
Create hunting rule
Author:dubfib
Rule name:win_rat_generic
Create hunting rule
Author:Reedus0
Description:Rule for detecting generic RAT malware

File information

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

Malspam

Formbook

Executable exe a94633c29f9278431d729e7a042eae4e4bf59ae36d553db13d4c449fe33a45db

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/3406/

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::CopyFileExW
KERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
IPHLPAPI.DLL::IcmpCreateFile
KERNEL32.dll::CreateFileW
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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