MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33. 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 6 File information Comments
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SHA256 hash: 6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33
SHA3-384 hash: 5245d1119c40ea8d77f151f806d1abff25a3da91e51125c735ceac9a79e58210fc796a4b3ee5234a75c4a051f110c521
SHA1 hash: cb8b0497c95512bf9233823f7d20937424c87207
MD5 hash: f12bf73a1cb81b5ddd8dd6ed66e610f1
humanhash: lemon-butter-cola-edward
File name:HTK TT600202109300860048866 Payment Proof.pdf.exe
Download: download sample
Signature Formbook
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File size:472'576 bytes
First seen:2021-10-21 11:36:38 UTC
Last seen:2021-10-22 10:26:04 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:UfHlm0I6Uqd2GhNoWnti/tanHwGslCmeMPSeKsyLGjloc5GWBqeq8Q2:UfFZUi2iN9NH3wR6Ajld5G0qf8
TLSH T199A4D02B365889B4D3391A33FDCB820C2BA97DB06513D65E36D3B25D09B13A20D355EB
Reporter adrian__luca
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
175
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/199071/
Detection(s):
SecuriteInfo.com.MSIL.Kryptik.WZA.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
fareit obfuscated packed
Link:
https://www.filescan.io/uploads/617150dfdb358dd15ecda9dc/reports/52afd87a-a2da-4d3a-8502-76551b9e3e0e/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/0b712dc1-eea4-46a2-ae6d-38d8c9e68160
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/874520
Signature
.NET source code contains potential unpacker
C2 URLs / IPs found in malware configuration
Executable has a suspicious name (potential lure to open the executable)
Found malware configuration
Initial sample is a PE file and has a suspicious name
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
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
Self deletion via cmd delete
Sigma detected: Suspicious Double Extension
System process connects to network (likely due to code injection or exploit)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 506948 Sample: HTK TT600202109300860048866... Startdate: 21/10/2021 Architecture: WINDOWS Score: 100 36 www.aidenb.tech 2->36 38 aidenb.tech 2->38 44 Found malware configuration 2->44 46 Malicious sample detected (through community Yara rule) 2->46 48 Multi AV Scanner detection for submitted file 2->48 50 10 other signatures 2->50 11 HTK TT600202109300860048866 Payment Proof.pdf.exe 3 2->11         started        signatures3 process4 file5 28 HTK TT600202109300...t Proof.pdf.exe.log, ASCII 11->28 dropped 14 HTK TT600202109300860048866 Payment Proof.pdf.exe 11->14         started        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 Queues an APC in another process (thread injection) 14->64 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.gold12guide.art 202.165.66.108, 49795, 80 VPIS-APVADSManagedBusinessInternetServiceProviderMY Australia 17->30 32 mecasso.store 15.197.142.173, 49800, 80 TANDEMUS United States 17->32 34 11 other IPs or domains 17->34 40 System process connects to network (likely due to code injection or exploit) 17->40 42 Performs DNS queries to domains with low reputation 17->42 21 msiexec.exe 17->21         started        signatures10 process11 signatures12 52 Self deletion via cmd delete 21->52 54 Modifies the context of a thread in another process (thread injection) 21->54 56 Maps a DLL or memory area into another process 21->56 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-10-21 10:07:54 UTC
AV detection:
14 of 39 (35.90%)
Threat level:
  2/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=mrdhg3rwmija4h7eyniyxshg2fcvh5vqwj5k6h6fm5xb645fbqzq._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:euzn loader rat suricata
Link:
https://tria.ge/reports/211021-nq6kbabahj/
Behaviour
Suspicious use of WriteProcessMemory
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
Malware Config
C2 Extraction:
http://www.heser.net/euzn/
Unpacked files
SH256 hash:
e86f8321145d76c1d4dea6b6078bd199bc465aa1a1350667a2a622ebd5c09573
MD5 hash:
87fe8cd2bd5e5743c2206ac8eb983678
SHA1 hash:
205e2e983ffc60f77f80687c332d26a7d96b442a
Detections:
win_formbook_g0
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win_formbook_auto
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Link:
https://www.unpac.me/results/e4b0f437-d182-4b43-b61a-0a3fe37c72e0/
Parent samples :
a0d1e3fbe11fcbbea9dcad1880e23ea531c01c20fbbf383174cd420349657a01
a243b394a1a3377b3ae936e6ea896588cca8cc43f8b961bdecbbe324e28c283c
662ae2a76488e0f775884f0c19daa286c910f2e72acb414a5f820b655ef42565
3dafcb39d7cc251c9a8212a8e745e0d72f2c530bf699a9168a379fa25e36ec38
7b5de7135bd7e3c2eb98a94977c138597d357def8a9851a8df3ee442f83ec737
6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33
17ed64707506c917be6329e1cbe94548d761d218dc8e2d624eab99565acc055d
9508c04b4c1dd578c8c3b8597a68bb73548b107edcbb37f13909a18d85f78b3a
SH256 hash:
caca58c402adff09bbc6907211050ce93ba1ca9de7e272d9d0f37f101e6fa340
MD5 hash:
3880b837a1470737da64d3b682136cb0
SHA1 hash:
7670a024e615341a0c1f9c38ba088781210167fb
Link:
https://www.unpac.me/results/e4b0f437-d182-4b43-b61a-0a3fe37c72e0/
SH256 hash:
94c594a897eb4d4b14b3949e821bea3ddbd6ad7fee31f403006708f415d20edb
MD5 hash:
6ab3296639f5ec050f74d8917faa9f67
SHA1 hash:
5dccf88a1757bd7de9d3339ebdd21a2c8e552ef1
Link:
https://www.unpac.me/results/e4b0f437-d182-4b43-b61a-0a3fe37c72e0/
SH256 hash:
6fee24a1398bb022d0c5b9059b9b21e7636fc3861866a583d0e49b7d0ca56d58
MD5 hash:
36e2528c3cb3ad299ea481283687cdd6
SHA1 hash:
1981340bc7be1aa8f78f942fc6f0724838e35a87
Link:
https://www.unpac.me/results/e4b0f437-d182-4b43-b61a-0a3fe37c72e0/
SH256 hash:
6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33
MD5 hash:
f12bf73a1cb81b5ddd8dd6ed66e610f1
SHA1 hash:
cb8b0497c95512bf9233823f7d20937424c87207
Link:
https://www.unpac.me/results/e4b0f437-d182-4b43-b61a-0a3fe37c72e0/
Malware family:
FormBook
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/6446736e3662/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/6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33

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:Formbook
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Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
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Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:pe_imphash
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Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash
Rule name:win_formbook_auto
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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 6446736e3662120e1fe4c3518bc8e6d14553f6b0b27aaf1fc5676e1f73a50c33

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/199071/

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