MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f. 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 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f
SHA3-384 hash: 97f7411f06033b7eb222a19d5b876a2c60eb446433e35acf68a0ca9d0ad5b45c14cea73c81f7c09d1041e49ab38e062d
SHA1 hash: da15f27c44390fff4fdceaf60aca9fae78f5ffe9
MD5 hash: 2e8df9cdd4913053e207a228eb23ef9b
humanhash: stairway-lactose-cola-leopard
File name:2300-02998.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'175'040 bytes
First seen:2024-05-23 18:22:50 UTC
Last seen:2024-05-23 19:36:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:VAHnh+eWsN3skA4RV1Hom2KXMmHa5z5LN40XkXC65:Eh+ZkldoPK8Ya5L7kP
TLSH T10345BD0273D2D036FFABA2739B6AF64156BD79250133852F13981DB9BC701B2227D663
TrID 63.7% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
11.6% (.EXE) Win64 Executable (generic) (10523/12/4)
7.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
5.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.9% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
385
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f.exe
Verdict:
Suspicious activity
Analysis date:
2024-05-23 18:46:21 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/95f75ea5-c4e8-4664-b743-1ba18d0e2696

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.AutoIt.1383.18912.15675.UNOFFICIAL
Create hunting rule

Verdict:
Clean
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=664f8bca02cf134c1c7f87dfwin7simulatehigh_evasion
Tags:
n/a
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
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:
autoit fingerprint keylogger lolbin packed shell32
Link:
https://www.filescan.io/uploads/664f89954d56d7d16285d868/reports/b862bc47-c46b-4d68-a291-3509def7fd57/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f
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.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/543a5b59-4c0d-4913-a6d8-149c52afc7a2
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1446746
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
Found direct / indirect Syscall (likely to bypass EDR)
Machine Learning detection for 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
Queues an APC in another process (thread injection)
Snort IDS alert for network traffic
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: 1446746 Sample: 2300-02998.exe Startdate: 23/05/2024 Architecture: WINDOWS Score: 100 28 www.sweet777.work 2->28 30 www.make-l.ru 2->30 32 2 other IPs or domains 2->32 42 Snort IDS alert for network traffic 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 4 other signatures 2->48 10 2300-02998.exe 4 2->10         started        signatures3 process4 signatures5 60 Binary is likely a compiled AutoIt script file 10->60 62 Writes to foreign memory regions 10->62 64 Maps a DLL or memory area into another process 10->64 13 svchost.exe 10->13         started        process6 signatures7 66 Maps a DLL or memory area into another process 13->66 16 ynjAGFmEOcRhAnzgpxdmIqDjKt.exe 13->16 injected process8 signatures9 40 Found direct / indirect Syscall (likely to bypass EDR) 16->40 19 openfiles.exe 13 16->19         started        process10 signatures11 50 Tries to steal Mail credentials (via file / registry access) 19->50 52 Tries to harvest and steal browser information (history, passwords, etc) 19->52 54 Modifies the context of a thread in another process (thread injection) 19->54 56 2 other signatures 19->56 22 ynjAGFmEOcRhAnzgpxdmIqDjKt.exe 19->22 injected 26 firefox.exe 19->26         started        process12 dnsIp13 34 www.kguyreoalpha.shop 43.132.225.97, 49718, 49719, 49720 LILLY-ASUS Japan 22->34 36 www.sweet777.work 172.67.138.9, 49708, 80 CLOUDFLARENETUS United States 22->36 38 2 other IPs or domains 22->38 58 Found direct / indirect Syscall (likely to bypass EDR) 22->58 signatures14
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f/
Threat name:
Win32.Trojan.ShellcodeCrypter
Create hunting rule
Status:
Malicious
First seen:
2024-05-23 10:11:04 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
23 of 38 (60.53%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=vd76noarmi4jdevvsggipaidjpx4mikyfrmj7ezvx44s74w7qzhq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/240523-w1gmyabf91/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Verdict:
Unknown
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c62242d1-096d-45de-b200-12f098c8b306
Unpacked files
SH256 hash:
9d7eee7f48da3098cb749abfe1ed9d3ab06be0f1d8dd56a128f01f3808862d3f
MD5 hash:
f4715e96f1a90c7a4ede5d1109389207
SHA1 hash:
546309284560aa845d451f8e350ab4089770415a
Link:
https://www.unpac.me/results/fa5c460a-f92b-4f11-af51-794f576df5fc/
SH256 hash:
a3aa0f014dc4f65c95eacd776c2e547aed9dad04629730aaa50f05750e506ea0
MD5 hash:
47661c6ab744e2e0a49d2e8c753977d6
SHA1 hash:
ebda6128c76954bd4f26d63af69b40f348139e42
Link:
https://www.unpac.me/results/fa5c460a-f92b-4f11-af51-794f576df5fc/
SH256 hash:
a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f
MD5 hash:
2e8df9cdd4913053e207a228eb23ef9b
SHA1 hash:
da15f27c44390fff4fdceaf60aca9fae78f5ffe9
Detections:
AutoIT_Compiled
Create hunting rule
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/fa5c460a-f92b-4f11-af51-794f576df5fc/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a8ffe6b81162/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/a8ffe6b81162389192b5918c8781034befc621582c589f9335bf392ff2df864f

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:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
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

File information

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

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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