MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb. 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 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb
SHA3-384 hash: 62b097533c5a649aa929faf90fefbe63e88358115d6a7ffea163189de71e4a3d279509cd3a1ed8d6bf9c0412ef5999a7
SHA1 hash: b732334e328c33b0ae3ba54a871a666d88d490fb
MD5 hash: 515cda40d7cb5cb3c28c27955528a243
humanhash: summer-bulldog-floor-mississippi
File name:invoice CHN1080769.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'330'797 bytes
First seen:2024-10-29 19:26:52 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash aaaa8913c89c8aa4a5d93f06853894da (246 x Formbook, 82 x AgentTesla, 74 x RedLineStealer)
ssdeep 24576:ffmMv6Ckr7Mny5QLQzpWW+Biof4c58wv2:f3v+7/5QLiWW+B54o8n
Threatray 716 similar samples on MalwareBazaar
TLSH T13C55F112B3D680B6DDA33974297BE32AEB3575194323C58BA7E02E778F211405B37762
TrID 84.9% (.EXE) AutoIt3 compiled script executable (510622/80/67)
9.5% (.CPL) Windows Control Panel Item (generic) (57583/11/19)
1.7% (.EXE) Win64 Executable (generic) (10522/11/4)
1.0% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
Magika pebin
File icon (PE):PE icon
dhash icon b150b26869b2d471 (468 x Formbook, 101 x RedLineStealer, 94 x AgentTesla)
Reporter threatcat_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
474
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
invoice CHN1080769.exe
Verdict:
No threats detected
Analysis date:
2024-10-29 19:33:33 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/ad3a5920-9fce-4f3d-b48e-935aa67b4f42

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

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6721370ca75e41aa6722d237
Tags:
Autoit Emotet
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 compiled-script fingerprint keylogger lolbin masquerade microsoft_visual_cc overlay packed packed packer_detected shell32
Link:
https://www.filescan.io/uploads/6721370c6c05056815e108a1/reports/e8ca79f6-ab30-468a-af10-836ae4abfb9a/overview
Verdict:
Malicious
Labled as:
Trojan.Agent
Link:
https://www.hybrid-analysis.com/sample/991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb
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:
Unknown
Link:
https://analyze.intezer.com/analyses/2a67985f-d1a3-491f-8c55-6db4125f904c
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1544911
Signature
AI detected suspicious sample
Contains functionality to detect sleep reduction / modifications
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:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb/
Threat name:
Win32.Trojan.AutoitInject
Create hunting rule
Status:
Malicious
First seen:
2024-10-28 07:02:33 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=tepz2t3xx5ca5qv5wvnrcrjv5ppv2c6mgt5mganfjwbis655kp5q._file
Verdict:
malicious
Label(s):
unknown_loader_036
Create hunting rule
admintool_powerrun
Create hunting rule
Similar samples:
0bf69f612cadf4348b28d3dcbfcd293a226c9415d59dd516fb161fb309946383
Formbook
0d3b7f710ac5caa13f9e5cc85ef5a898e16f919e34bf7d47a0067c070fb572ad
Formbook
17ea3ecae5fa2fbe640e5bfdf146dae281256aad17813aa6a30f6c5045845670
Formbook
21a59a11cf82fabbd93b0df668a88f1af5e8fc17579439510d38cd30f9436e91
Formbook
4e6003b77cd84ef993df8a6d25b84af2ea485ec61c501b77dde3891ecf2ca2a5
Formbook
aa23cfca221a12901b22da3e1617dcc66d0063d45c0ad2d85a9f68ec8f3bcc21
Formbook
bc50c75d095285bf6687dfc4e5a94d83b43514328d199f95ec1c593598ebc206
Formbook
c9dd776a5a03ca1adb72b54849bd9d8fc6ff7055591f8ca99f130f4dbef0a46e
Formbook
d01fb614059d4648528f521192c99a668c89931593d93267f399124c60477174
Formbook
error
Formbook
+ 706 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/241029-x53lmszlhl/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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/38da726d-fe65-4c8f-bef5-e9ce1105f727
Unpacked files
SH256 hash:
0d08a983022532016148c03b85e296f4f821afde246ef1a46fa48a0c13c2945a
MD5 hash:
0505658cdecf621c5eabc345aa6cee3e
SHA1 hash:
4286dbaa0ce0d6fe3fc909127a36de569cfaffe1
Link:
https://www.unpac.me/results/d6d14798-f0c8-4c55-a35f-168360271564/
SH256 hash:
e3e4c758febf017e4e1affe0a28eb9e0d24ffba3b77ed0091e239e9d6c01eaf2
MD5 hash:
3d36dc67704368002e3354a3b28506c5
SHA1 hash:
fd23619d2a44680e888adadc1d281233e10b1b7a
Link:
https://www.unpac.me/results/d6d14798-f0c8-4c55-a35f-168360271564/
SH256 hash:
991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb
MD5 hash:
515cda40d7cb5cb3c28c27955528a243
SHA1 hash:
b732334e328c33b0ae3ba54a871a666d88d490fb
Link:
https://www.unpac.me/results/d6d14798-f0c8-4c55-a35f-168360271564/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/991f9d4f77bf/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/991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb

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
Create hunting rule
Author:Jean-Philippe Teissier / @Jipe_
Description:AutoIT packer
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:MD5_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for MD5 constants

File information

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

Malspam

Formbook

Executable exe 991f9d4f77bf440ec2bdb55b114535ebdf5d0bcc34fac301a54d82897bbd53fb

(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
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
AUTH_APIManipulates User AuthorizationADVAPI32.dll::CopySid
ADVAPI32.dll::GetLengthSid
ADVAPI32.dll::GetAce
USER32.dll::GetUserObjectSecurity
ADVAPI32.dll::InitializeAcl
ADVAPI32.dll::InitializeSecurityDescriptor
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::DuplicateTokenEx
ADVAPI32.dll::GetAclInformation
ADVAPI32.dll::GetSecurityDescriptorDacl
ADVAPI32.dll::GetTokenInformation
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::LoadLibraryW
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::GetDriveTypeW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleA
KERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleCP
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateHardLinkW
KERNEL32.dll::CreateFileW
KERNEL32.dll::CreateFileA
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_SVC_APICan Manipulate Windows ServicesADVAPI32.dll::OpenSCManagerW
ADVAPI32.dll::UnlockServiceDatabase
WIN_USER_APIPerforms GUI ActionsUSER32.dll::BlockInput
USER32.dll::CloseDesktop
USER32.dll::CreateMenu
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::FindWindowW

Comments