MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8c164f84fd80c7fcaa87f60f8cc37289dc2670b87a014469416cd7ab6e699691. 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: 8c164f84fd80c7fcaa87f60f8cc37289dc2670b87a014469416cd7ab6e699691
SHA3-384 hash: 2ed36a5afd3203445bbf9fe5162cd27bd1fb10ad089b5320478edd83a161b3adb22907cc4fdc09fad8c556861892ff3d
SHA1 hash: ad5f4504cf9c6234f3679517a52f63fd5f9dab0c
MD5 hash: 128c3759e5c86a80ac220a702f92e709
humanhash: blossom-hydrogen-indigo-fruit
File name:8wmHXR7KEFYYJXL.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:803'328 bytes
First seen:2022-03-01 11:56:18 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'643 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 24576:pK777777777777gY9lJ1dPG5hoGgRMUwu93bL0gH:g777777777777rQ5Xgsk3bLjH
TLSH T1DF05CF4839AB5F3DF5B19BB20DC0ECB4BA99FB331C08B3BD78516256C661B409842677
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
180
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/245737/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.NanoBot.mc.30336.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Сreating synchronization primitives
Launching a process
Searching for synchronization primitives
Launching cmd.exe command interpreter
Unauthorized injection to a system process
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/621e0a11b94fb38cb42e0e16/reports/2ad21194-70c4-4e30-aa53-3eb2ec45acb4/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/a70bdf4b-9dc3-4909-a732-99d57b8b55a9
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/948200
Signature
.NET source code contains potential unpacker
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)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses ipconfig to lookup or modify the Windows network settings
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 580679 Sample: 8wmHXR7KEFYYJXL.exe Startdate: 01/03/2022 Architecture: WINDOWS Score: 100 34 www-bing-com.dual-a-0001.a-msedge.net 2->34 36 store-images.s-microsoft.com 2->36 38 dual-a-0001.dc-msedge.net 2->38 48 Malicious sample detected (through community Yara rule) 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 Yara detected AntiVM3 2->52 54 4 other signatures 2->54 11 8wmHXR7KEFYYJXL.exe 3 2->11         started        15 explorer.exe 10 2->15         started        signatures3 process4 file5 32 C:\Users\user\...\8wmHXR7KEFYYJXL.exe.log, ASCII 11->32 dropped 66 Tries to detect virtualization through RDTSC time measurements 11->66 68 Injects a PE file into a foreign processes 11->68 17 8wmHXR7KEFYYJXL.exe 11->17         started        20 8wmHXR7KEFYYJXL.exe 11->20         started        signatures6 process7 signatures8 40 Modifies the context of a thread in another process (thread injection) 17->40 42 Maps a DLL or memory area into another process 17->42 44 Sample uses process hollowing technique 17->44 46 Queues an APC in another process (thread injection) 17->46 22 explorer.exe 17->22 injected process9 signatures10 56 Uses ipconfig to lookup or modify the Windows network settings 22->56 25 ipconfig.exe 22->25         started        process11 signatures12 58 Self deletion via cmd delete 25->58 60 Modifies the context of a thread in another process (thread injection) 25->60 62 Maps a DLL or memory area into another process 25->62 64 Tries to detect virtualization through RDTSC time measurements 25->64 28 cmd.exe 1 25->28         started        process13 process14 30 conhost.exe 28->30         started       
Detection:
xloader
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8c164f84fd80c7fcaa87f60f8cc37289dc2670b87a014469416cd7ab6e699691/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-02-23 15:49:37 UTC
File Type:
PE (.Net Exe)
Extracted files:
16
AV detection:
30 of 43 (69.77%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=rqle7bh5qdd7zkuh6yhyzq3srhocm4fypiaui2kbntl2w3tjs2iq._file
Verdict:
malicious
Label(s):
formbook
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Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader campaign:h85e loader rat suricata
Link:
https://tria.ge/reports/220301-n4k6jabdhq/
Behaviour
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
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Unpacked files
SH256 hash:
825c82600f6c546de1301f31e832d80be306b1f509d2e7233c567183a64d09d0
MD5 hash:
6d9c072b55c73e08c6b27290d58052c2
SHA1 hash:
366ee8269f442554409a198867100924c4bb5d45
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/8d76b53e-4538-44bb-b57a-61cf6e096a44/
Parent samples :
8c164f84fd80c7fcaa87f60f8cc37289dc2670b87a014469416cd7ab6e699691
e321bd433e6e630bb69b21c80533446717274fd02eb74e74670934f5cc7e145c
0cea3c4ef4eb71c1bf7307d604c7414a1b375bcd2e077cd861695467ccf0fef8
SH256 hash:
13fdbbf4a5a2254898768e080a33e758a6ba5156cc50ab539b7cb8bef9e89a68
MD5 hash:
5f81f2369c273322301f02fddaa6c71e
SHA1 hash:
bd428e7213160d6e7c4a695d43c1398691ac291d
Link:
https://www.unpac.me/results/8d76b53e-4538-44bb-b57a-61cf6e096a44/
SH256 hash:
e3bdaf9e98eb65a070cf4424bc123e57ade151c41e4a0d375e769749155c1715
MD5 hash:
78a25e75b94923e889ecd100349facbe
SHA1 hash:
6b3f8db525d3c98f92ed480e664ab8ee9458340b
Link:
https://www.unpac.me/results/8d76b53e-4538-44bb-b57a-61cf6e096a44/
SH256 hash:
cf96931df076a85400a0ae0b03d4c0331a442701f5d92d9b25b3a596656b11d7
MD5 hash:
52da23c50e7ac591ba3a9028bd3689b8
SHA1 hash:
01dd1433bf4e3686c16a5b44d0cb6303fabf8964
Link:
https://www.unpac.me/results/8d76b53e-4538-44bb-b57a-61cf6e096a44/
SH256 hash:
8c164f84fd80c7fcaa87f60f8cc37289dc2670b87a014469416cd7ab6e699691
MD5 hash:
128c3759e5c86a80ac220a702f92e709
SHA1 hash:
ad5f4504cf9c6234f3679517a52f63fd5f9dab0c
Link:
https://www.unpac.me/results/8d76b53e-4538-44bb-b57a-61cf6e096a44/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/8c164f84fd80c7fcaa87f60f8cc37289dc2670b87a014469416cd7ab6e699691

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
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
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 8c164f84fd80c7fcaa87f60f8cc37289dc2670b87a014469416cd7ab6e699691

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/245737/

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