MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4. 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 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4
SHA3-384 hash: 01dfcf917019f1d2f5764e0724eb7b24a68192d86f08fbfad32da1c1888caba259cbf32228a39fadc91361afe5d42ec7
SHA1 hash: d93318910aed3eecf20d2c8be1f9676044e4253d
MD5 hash: 6ce4d52508ed7827e7eef5a36adbdeaf
humanhash: beer-washington-fillet-yankee
File name:Invoice and Packing List_ PDF.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'242'624 bytes
First seen:2024-07-30 13:46:42 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 948cc502fe9226992dce9417f952fce3 (1'182 x CredentialFlusher, 446 x Formbook, 231 x AgentTesla)
ssdeep 24576:4qDEvCTbMWu7rQYlBQcBiT6rprG8aDHvGi8MPefkzBlQ:4TvC/MTQYxsWR7aDHvRP
TLSH T1B645CF0273C1D062FF9B92734B5AF6514BBC79260123A62F13A81D79BE701B1563E7A3
TrID 68.8% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
12.5% (.EXE) Win64 Executable (generic) (10523/12/4)
6.0% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.4% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon aae2f3e38383b629 (2'034 x Formbook, 1'183 x CredentialFlusher, 666 x AgentTesla)
Reporter James_inthe_box
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
478
Origin country :
US US
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Invoice and Packing List_ PDF.exe
Verdict:
No threats detected
Analysis date:
2024-07-30 13:49:31 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4787d02c-c4e1-49f4-9c0d-4a413d7ddc2c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Malicious
Score:
92.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a8eedcc06bd32e596e7505
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:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4
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/9ed4d074-dc19-4877-a580-326e83fd429d
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1484682
Signature
AI detected suspicious sample
Binary is likely a compiled AutoIt script file
Found API chain indicative of sandbox detection
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/1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4/
Threat name:
Win32.Trojan.Strab
Create hunting rule
Status:
Malicious
First seen:
2024-07-30 13:35:55 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
19 of 24 (79.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=dm3dtm2ymj77cbn57ynoskvczq4fuac63o57h2z5bgesw4xbbx2a._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/240730-q3jbnasajj/
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:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/028ef83c-0514-4564-bf5c-6a1d72a6a2d5
Unpacked files
SH256 hash:
ec1aa6eb4ee68bec97f58a4374fb894849602df0f5290bccb2437c03b5a29a87
MD5 hash:
10323c92b3b813cb881507fb17e587b8
SHA1 hash:
ff9a6bdd3e6fde5307d21d9e30e6f9c39baa38c1
Detections:
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Link:
https://www.unpac.me/results/86fe2432-bc2a-4382-8b99-9f5582218ac5/
Parent samples :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 hash:
eaeaa93b843dd10db91b16d4afa0f4bdc63f641e52f3ec4379278deb76d0f188
MD5 hash:
345b52638863e6fdc622aab329e77a3c
SHA1 hash:
08bc28a677848bc35fb042495402624329c89c83
Link:
https://www.unpac.me/results/86fe2432-bc2a-4382-8b99-9f5582218ac5/
SH256 hash:
1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4
MD5 hash:
6ce4d52508ed7827e7eef5a36adbdeaf
SHA1 hash:
d93318910aed3eecf20d2c8be1f9676044e4253d
Detections:
AutoIT_Compiled
Create hunting rule
Link:
https://www.unpac.me/results/86fe2432-bc2a-4382-8b99-9f5582218ac5/
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/1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4

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_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:pe_detect_tls_callbacks
Create hunting rule

File information

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

Malspam

Formbook

Executable exe 1b3639b358627ff105bdfe1ae92aa2cc385a005edbbbf3eb3d09892b72e10df4

(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::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
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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