MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92. 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 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92
SHA3-384 hash: 1476229fc021bd3602aa3afdc0ef5cf3d75156638c074e72c99a6f41bd134a1638b84ffe9f6ea9eb61e3181fdd31d7e0
SHA1 hash: 7baf8c3ff6a9a10bcb887e3b2bbe621e7ffbb03b
MD5 hash: 76f483ad48ef2396fbacfb49d70f15e8
humanhash: potato-oxygen-solar-green
File name:PO#86637.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'192'960 bytes
First seen:2024-09-05 07:29:37 UTC
Last seen:2024-09-06 07:14:41 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:DAHnh+eWsN3skA4RV1Hom2KXMmHar8LZOwJTfBXF8RDOgjz5:Oh+ZkldoPK8YargJ7NF8RDN5
TLSH T19245BD0273D1C036FFAB92739B6AB60156BC79254133852F13982DB9BD701B2277E663
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)
Magika pebin
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
8
# of downloads :
423
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
PO#86637.exe
Verdict:
No threats detected
Analysis date:
2024-09-05 07:31:07 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/d6d5acd3-436c-48a9-ba8c-f75cd40a86f5

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepMalware.20578.12080.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d95dfef3d7ccf99f900b62
Tags:
Shellcodecrypter
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:
autoit epmicrosoft_visual_cc fingerprint keylogger lolbin microsoft_visual_cc packed phishing shell32
Link:
https://www.filescan.io/uploads/66d95dfb88ccac59907c720a/reports/7fa82253-ce69-474d-b5ee-e8b6f95f5db8/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92
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/9432c177-d3d0-46cf-b0a8-be5cac48797d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1504665
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
Initial sample is a PE file and has a suspicious name
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92/
Threat name:
Win32.Backdoor.Formbooks
Create hunting rule
Status:
Malicious
First seen:
2024-09-05 01:30:24 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ij2yinvi3fxssifrjcavjclxld6tbsysidugoflefrfmpfkl36ja._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/240905-jbs88awglc/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/07250b11-caac-49a6-baa3-5d0ee1dc9189
Unpacked files
SH256 hash:
bd37ce88195fc1c46c6286a6179d299dc8fc053387b2838aac97293a16f87d55
MD5 hash:
494903e84221d7bf502833b5f2768a3e
SHA1 hash:
8489f8e9b1864007d065c817138f688604e3f5c5
Detections:
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Link:
https://www.unpac.me/results/ade214cb-c6bd-45c3-87f7-84e9f6017f88/
Parent samples :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 hash:
f073c47484a5c2fb77f4198de069b4ee8c73dafd102d7a5c2d37da819412c7e4
MD5 hash:
ca239f3c3f0b3660e18b1f247fefdcdc
SHA1 hash:
9d591c126746b726f8c2486cfbc6aa8dae3f5031
Link:
https://www.unpac.me/results/ade214cb-c6bd-45c3-87f7-84e9f6017f88/
SH256 hash:
42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92
MD5 hash:
76f483ad48ef2396fbacfb49d70f15e8
SHA1 hash:
7baf8c3ff6a9a10bcb887e3b2bbe621e7ffbb03b
Detections:
AutoIT_Compiled
Create hunting rule
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/ade214cb-c6bd-45c3-87f7-84e9f6017f88/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/42758436a8d9/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/42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92

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: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.

Malspam

Formbook

Executable exe 42758436a8d96f2920b1488154897758fd30cb1240e86715642c4ac7954bdf92

(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::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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