MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268. 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: cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268
SHA3-384 hash: cc0caabbe16334fe52c29ab473e065c284d581e47af0a59f6ccaeaed622c9e931d580738f41674f808214a11bd026c65
SHA1 hash: ffec7d7c9c081069a42e28fd659727e9ca69590e
MD5 hash: e2f1b5387c5f5074d89f7788b30fdad8
humanhash: black-paris-five-magnesium
File name:176654 Grade B2FA, BRF-MBO2 & CX2OB.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'200'640 bytes
First seen:2024-09-03 15:52:08 UTC
Last seen:2024-09-09 11:30:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash afcdf79be1557326c854b6e20cb900a7 (1'102 x FormBook, 936 x AgentTesla, 399 x RemcosRAT)
ssdeep 24576:TAHnh+eWsN3skA4RV1Hom2KXMmHaC5a5inu6f9sC7+A85:eh+ZkldoPK8YaC5a5wu6OLX
TLSH T14045BE0273D1C036FFABA2739B6AF20556BD79254133852F13981DB9B9701B2263E763
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 :
3
# of downloads :
420
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
176654 Grade B2FA, BRF-MBO2 & CX2OB.exe
Verdict:
No threats detected
Analysis date:
2024-09-03 15:54:51 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/73e8e7e6-7ae4-4e85-b98d-4d64a8168b7e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Script.SNH-gen.14508.2745.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66d730e2f3d7ccf99f8fc4f1
Tags:
Swotter
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 shell32
Link:
https://www.filescan.io/uploads/66d730df92eddfaf3e7c3146/reports/399ba0ad-6515-4341-a63e-58525036ef37/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268
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/8f1945d9-8c2d-4f1e-a210-58d9ee8a32d1
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1503620
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
Performs DNS queries to domains with low reputation
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)
Uses ipconfig to lookup or modify the Windows network settings
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1503620 Sample: 176654 Grade B2FA, BRF-MBO2... Startdate: 03/09/2024 Architecture: WINDOWS Score: 100 33 www.pet-adoption-01.xyz 2->33 35 www.araste.xyz 2->35 37 25 other IPs or domains 2->37 41 Suricata IDS alerts for network traffic 2->41 43 Malicious sample detected (through community Yara rule) 2->43 45 Multi AV Scanner detection for submitted file 2->45 49 6 other signatures 2->49 10 176654 Grade B2FA, BRF-MBO2 & CX2OB.exe 4 2->10         started        signatures3 47 Performs DNS queries to domains with low reputation 35->47 process4 signatures5 59 Binary is likely a compiled AutoIt script file 10->59 61 Writes to foreign memory regions 10->61 63 Maps a DLL or memory area into another process 10->63 13 svchost.exe 10->13         started        process6 signatures7 65 Maps a DLL or memory area into another process 13->65 16 uLsFmGyMyzUHy.exe 13->16 injected process8 dnsIp9 27 www.nexio.life 203.161.42.73, 55688, 55689, 55690 VNPT-AS-VNVNPTCorpVN Malaysia 16->27 29 7hubmt.online 162.240.81.18, 55676, 55677, 55678 UNIFIEDLAYER-AS-1US United States 16->29 31 10 other IPs or domains 16->31 39 Found direct / indirect Syscall (likely to bypass EDR) 16->39 20 ipconfig.exe 13 16->20         started        23 poqexec.exe 16->23         started        signatures10 process11 signatures12 51 Tries to steal Mail credentials (via file / registry access) 20->51 53 Tries to harvest and steal browser information (history, passwords, etc) 20->53 55 Modifies the context of a thread in another process (thread injection) 20->55 57 2 other signatures 20->57 25 firefox.exe 20->25         started        process13
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268/
Threat name:
Win32.Trojan.Swotter
Create hunting rule
Status:
Malicious
First seen:
2024-09-03 15:53:18 UTC
File Type:
PE (Exe)
Extracted files:
28
AV detection:
11 of 38 (28.95%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=zuyra4cc2nmuediy65enpmaqohsv3w62nfue7mfqnqt5ouixqjua._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
n/a
Score:
  5/10
Tags:
discovery
Link:
https://tria.ge/reports/240903-tbmfsa1all/
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/c13f22ef-d09e-4453-bafb-96d67e0a3deb
Unpacked files
SH256 hash:
84474ef811f5dc891d84a950b16365b115d4d4a7ca5d334893c3863352ab6773
MD5 hash:
fa5f2ec16a0cbf04a205f3d5c5d3f63d
SHA1 hash:
2a2cb560bc01a88aa3137cceabda940ddbe5ab6b
Detections:
win_formbook_g0
Create hunting rule
win_formbook_w0
Create hunting rule
Link:
https://www.unpac.me/results/ea61193f-6679-450d-abc8-e79789dd0491/
Parent samples :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 hash:
3e4d284431e671b6407ea86a3806895a05b38438a4a909ad91589e03a648d450
MD5 hash:
44871f725ac22250797fa7913051db11
SHA1 hash:
89198f3b2e1788af9c3f5b959609c1a42ba7b162
Link:
https://www.unpac.me/results/ea61193f-6679-450d-abc8-e79789dd0491/
SH256 hash:
cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268
MD5 hash:
e2f1b5387c5f5074d89f7788b30fdad8
SHA1 hash:
ffec7d7c9c081069a42e28fd659727e9ca69590e
Detections:
AutoIT_Compiled
Create hunting rule
SUSP_Imphash_Mar23_3
Create hunting rule
Link:
https://www.unpac.me/results/ea61193f-6679-450d-abc8-e79789dd0491/
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/cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268

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 cd31107042d359420d18f748d7b01071e55ddbda69684fb0b06c27d751178268

(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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