MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 478bdcdd85ddc7287b5dde32391881591cc77db75412ef5340f5bd3531738245. 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

SHA256 hash: 478bdcdd85ddc7287b5dde32391881591cc77db75412ef5340f5bd3531738245
SHA3-384 hash: d4d9791f38a6f9f8af54ba4558ea3913ee6168ff4176b4e45c0a1dfc3536fe8b8d2842220749ffe6147be34ccfb7669a
SHA1 hash: b7f5aa3cc9c67f57c7878eb6992ab140c75f76b6
MD5 hash: 3ac44cf76a2a873493a2f46db9e4c78b
humanhash: lion-diet-venus-red
File name:file-004331_pdf.gz.exe
Download: download sample
Signature Formbook
File size:644'096 bytes
First seen:2024-02-21 07:00:20 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:M10R0MutIStHHPy2zAyj9wnSpZjfDQ2/AeyJkZz3k5eGnPnF:MOOMuG8HHPzZQSphQ2/Dfif
TLSH T1A6D42390E39DC47BCEB2A9FE047019D418F6183DBA16D39E6DACE09C0D63B4A5712B13
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.2% (.SCR) Windows screen saver (13097/50/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4504/4/1)
File icon (PE):PE icon
dhash icon 24187a616d4d6910 (6 x Formbook, 4 x AgentTesla, 1 x AsyncRAT)
Reporter abuse_ch
Tags:exe FormBook

Intelligence


File Origin
# of uploads :
1
# of downloads :
321
Origin country :
NL NL
Vendor Threat Intelligence
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a process with a hidden window
Unauthorized injection to a recently created process
Restart of the analyzed sample
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Adding an exclusion to Microsoft Defender
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
expand lolbin masquerade packed
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.
Result
Threat name:
FormBook, PureLog Stealer
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
.NET source code contains method to dynamically call methods (often used by packers)
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Snort IDS alert for network traffic
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Yara detected PureLog Stealer
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1395885 Sample: file-004331_pdf.gz.exe Startdate: 21/02/2024 Architecture: WINDOWS Score: 100 38 www.shitigo.com 2->38 40 www.qtcem.com 2->40 42 12 other IPs or domains 2->42 50 Snort IDS alert for network traffic 2->50 52 Multi AV Scanner detection for domain / URL 2->52 54 Found malware configuration 2->54 56 13 other signatures 2->56 11 file-004331_pdf.gz.exe 4 2->11         started        signatures3 process4 signatures5 60 Adds a directory exclusion to Windows Defender 11->60 62 Tries to detect virtualization through RDTSC time measurements 11->62 64 Injects a PE file into a foreign processes 11->64 14 file-004331_pdf.gz.exe 11->14         started        17 powershell.exe 21 11->17         started        process6 signatures7 72 Modifies the context of a thread in another process (thread injection) 14->72 74 Maps a DLL or memory area into another process 14->74 76 Sample uses process hollowing technique 14->76 78 Queues an APC in another process (thread injection) 14->78 19 explorer.exe 58 1 14->19 injected 23 WmiPrvSE.exe 17->23         started        25 conhost.exe 17->25         started        process8 dnsIp9 44 gksscje.online 84.32.84.32, 49718, 80 NTT-LT-ASLT Lithuania 19->44 46 www.shitigo.com 23.80.218.58, 49724, 80 LEASEWEB-USA-LAX-11US United States 19->46 48 5 other IPs or domains 19->48 58 System process connects to network (likely due to code injection or exploit) 19->58 27 cmmon32.exe 19->27         started        30 autofmt.exe 19->30         started        32 autoconv.exe 19->32         started        signatures10 process11 signatures12 66 Modifies the context of a thread in another process (thread injection) 27->66 68 Maps a DLL or memory area into another process 27->68 70 Tries to detect virtualization through RDTSC time measurements 27->70 34 cmd.exe 1 27->34         started        process13 process14 36 conhost.exe 34->36         started       
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2024-02-21 05:21:02 UTC
File Type:
PE (.Net Exe)
Extracted files:
7
AV detection:
18 of 37 (48.65%)
Threat level:
  5/5
Result
Malware family:
formbook
Score:
  10/10
Tags:
family:formbook campaign:m21s rat spyware stealer trojan
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Formbook payload
Formbook
Unpacked files
SH256 hash:
642a1c7ce26df96c5da53ad3bce2bb11e2c42e43e35bc29f79c034a3015cadfb
MD5 hash:
25e77be252ea7d97cbe177788e919c21
SHA1 hash:
f3dadfa5859837f420257cb63035a9da5b492c76
Detections:
FormBook win_formbook_w0 win_formbook_auto win_formbook_g0 Formbook
SH256 hash:
72638f4b30cc9dab51d31216991957bf1cd118b8a8743227b3e8f9c4805f7628
MD5 hash:
2a8240bba06e832ee5d136a0a7e5b5b9
SHA1 hash:
de49d9b33004a4a622a4279b3ee2b3e3e5cd012b
SH256 hash:
ec592062c41d26d7046ab135fbabaf80e69900ba940ca654261cda17109f8769
MD5 hash:
09f7fb78314d30bf7c69d72caa9da978
SHA1 hash:
5536e0f86fe6e36f11e5ba03a8f559675dd82f30
SH256 hash:
3acee79529b584fb5aa13642004bac7c2bce998e9d7050e11fe619480a49ab67
MD5 hash:
cc2b479eb15b2a6d9218b54ce5d344c7
SHA1 hash:
3ced879698244cc401037cb14ab045303a148f71
SH256 hash:
42e5bbee4b498550f505c1232326adbf9d5d23c7e90174eb142b4963b879fe7b
MD5 hash:
100a8095e042378d2c227eb0ff37b6d4
SHA1 hash:
32c4a6457d7c01e9e135c3750d571114bc0ef3a0
SH256 hash:
478bdcdd85ddc7287b5dde32391881591cc77db75412ef5340f5bd3531738245
MD5 hash:
3ac44cf76a2a873493a2f46db9e4c78b
SHA1 hash:
b7f5aa3cc9c67f57c7878eb6992ab140c75f76b6
Please note that we are no longer able to provide a coverage score for Virus Total.

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:NET
Author:malware-lu
Rule name:NETexecutableMicrosoft
Author:malware-lu
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Malspam

Formbook

Executable exe 478bdcdd85ddc7287b5dde32391881591cc77db75412ef5340f5bd3531738245

(this sample)

  
Delivery method
Distributed via e-mail attachment

Comments