MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 434c743911c278614310c1f5af6cfc5e37558b1f12a16238309e60f338902120. 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
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SHA256 hash: 434c743911c278614310c1f5af6cfc5e37558b1f12a16238309e60f338902120
SHA3-384 hash: 268952c769927708099e1a5a1ad0abd9d99b4cebec047e9d19fac64bac086d4f8206e12ed578856bc5d632a0089c6a24
SHA1 hash: 9c76eb649630fade02ef7a4a450d4912234f280f
MD5 hash: 4d87991fc25f6ef67a553da09f045b1e
humanhash: mexico-apart-carbon-mountain
File name:Zahlung.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:492'032 bytes
First seen:2022-08-01 11:06:51 UTC
Last seen:2022-08-01 11:52:58 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 12288:TBtpJXqNQp3d9NUTG0qV6gQQHY/q4fdVfpP+wT4n4JVRz:VtpJXWQpzfV6/mKqmdhMcvz
TLSH T1BCA4126F738C5B7DD681A376B4F37698E680DF4B2EA0299935FFDC0E611925C20206E4
TrID 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.4% (.EXE) Win64 Executable (generic) (10523/12/4)
6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.4% (.EXE) Win32 Executable (generic) (4505/5/1)
2.0% (.EXE) OS/2 Executable (generic) (2029/13)
File icon (PE):PE icon
dhash icon eaae8a9ea69ae8b0 (33 x Formbook, 4 x SnakeKeylogger, 1 x AgentTesla)
Reporter GovCERT_CH
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
287
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/295545/
Detection(s):
SecuriteInfo.com.Variant.Barys.281.27844.8826.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Launching a process
Creating a file
Сreating synchronization primitives
Launching cmd.exe command interpreter
Searching for synchronization primitives
Setting browser functions hooks
Unauthorized injection to a system process
Unauthorized injection to a browser process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
barys fareit packed
Link:
https://www.filescan.io/uploads/62e7b450d40ca3666157a561/reports/49145f6b-182e-4d24-9ba9-4109ef449299/overview
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.
Malware family:
Formbook
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/d10d8d35-02d6-4649-bff7-9d9e456e182f
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1044108
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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 submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 676602 Sample: Zahlung.exe Startdate: 01/08/2022 Architecture: WINDOWS Score: 100 36 Malicious sample detected (through community Yara rule) 2->36 38 Icon mismatch, binary includes an icon from a different legit application in order to fool users 2->38 40 Multi AV Scanner detection for submitted file 2->40 42 6 other signatures 2->42 10 Zahlung.exe 1 2->10         started        process3 file4 28 C:\Users\user\AppData\...\Zahlung.exe.log, ASCII 10->28 dropped 52 Writes to foreign memory regions 10->52 54 Allocates memory in foreign processes 10->54 56 Injects a PE file into a foreign processes 10->56 14 InstallUtil.exe 10->14         started        signatures5 process6 signatures7 58 Modifies the context of a thread in another process (thread injection) 14->58 60 Maps a DLL or memory area into another process 14->60 62 Sample uses process hollowing technique 14->62 64 2 other signatures 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.reform-ookura.com 154.212.193.167, 49856, 80 COMING-ASABCDEGROUPCOMPANYLIMITEDHK Seychelles 17->30 32 www.nftproperties.info 17->32 34 nftproperties.info 34.102.136.180, 49828, 80 GOOGLEUS United States 17->34 44 System process connects to network (likely due to code injection or exploit) 17->44 21 wscript.exe 17->21         started        signatures10 process11 signatures12 46 Modifies the context of a thread in another process (thread injection) 21->46 48 Maps a DLL or memory area into another process 21->48 50 Tries to detect virtualization through RDTSC time measurements 21->50 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/434c743911c278614310c1f5af6cfc5e37558b1f12a16238309e60f338902120/
Threat name:
ByteCode-MSIL.Trojan.FormBook
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Status:
Malicious
First seen:
2022-08-01 08:30:04 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=inghioiryj4gcqyqyh2263h4ly3vlcy7ckqweobqtzqpgoeqeeqa._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
formbook
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Score:
  10/10
Tags:
family:formbook campaign:nt19 rat spyware stealer trojan
Link:
https://tria.ge/reports/220801-m7zbwsffd4/
Behaviour
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Formbook payload
Formbook
Unpacked files
SH256 hash:
1214683de2d9b2489a2b512904bf282b1551c0891b326a30e84cd3ae903cbda4
MD5 hash:
583d6aec52d2a6d73ecfca27d48493b9
SHA1 hash:
d9c45a91eb40f5182fffb569cee19be91ab57225
Link:
https://www.unpac.me/results/ade71d6f-a775-43a3-91c3-eeb18a4a32cf/
SH256 hash:
434c743911c278614310c1f5af6cfc5e37558b1f12a16238309e60f338902120
MD5 hash:
4d87991fc25f6ef67a553da09f045b1e
SHA1 hash:
9c76eb649630fade02ef7a4a450d4912234f280f
Link:
https://www.unpac.me/results/ade71d6f-a775-43a3-91c3-eeb18a4a32cf/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/434c743911c2/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/434c743911c278614310c1f5af6cfc5e37558b1f12a16238309e60f338902120

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:malware_Formbook_strings
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Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.formbook.

File information

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

Malspam

Formbook

Executable exe 434c743911c278614310c1f5af6cfc5e37558b1f12a16238309e60f338902120

(this sample)

  
Dropped by
formbook
  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/295545/

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