MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb81812044069608e1ba320fcb7b878c5b6895f5bf91c93027ab4161042d01c7. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
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SHA256 hash: bb81812044069608e1ba320fcb7b878c5b6895f5bf91c93027ab4161042d01c7
SHA3-384 hash: fab19095f2cc464464c184cc870cef5d90f4af1ee65750137791b1f311875baf779cabd63be55a06b3fade9e09a7cfa9
SHA1 hash: d4d1635404188075b42f49c4714cc85faa54e71c
MD5 hash: 92c35904f4cf224c1a26f7162e465b02
humanhash: five-texas-mars-fifteen
File name:92c35904f4cf224c1a26f7162e465b02.exe
Download: download sample
Signature Formbook
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File size:17'920 bytes
First seen:2022-02-18 17:54:06 UTC
Last seen:2022-02-18 20:03:14 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 384:4F07tfN8SuL99LBzjHh2kr28/zu/s2/hwOPpwwwwwwlKGAwETKOOJ/gwCNwwwVS:807tfN8SuL99LBzjB2kr2yzu/s2/H/1S
Threatray 13'484 similar samples on MalwareBazaar
TLSH T1B68277087BE5C465C8BE8EB46A730518A31BA9CF5462891C2DCE4C550EF57414ACFFBE
File icon (PE):PE icon
dhash icon 31f098b29298f031 (53 x AgentTesla, 30 x Formbook, 12 x RedLineStealer)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
298
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/242583/
Detection(s):
SecuriteInfo.com.Trojan.Siggen16.62100.29296.21463.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
DNS request
Sending a custom TCP request
Sending an HTTP GET request
Unauthorized injection to a recently created process
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/620fdd7a875593a3cce69e24/reports/b1dfe7cd-3565-4ba7-a7e8-7851d1305d32/overview
Result
Verdict:
UNKNOWN
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/bede61cb-2607-4dfc-9489-9f94afe2056f
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/942400
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect virtualization through RDTSC time measurements
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 574877 Sample: t5g8a4kM4G.exe Startdate: 18/02/2022 Architecture: WINDOWS Score: 100 34 www.goodgood.online 2->34 40 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 6 other signatures 2->46 11 t5g8a4kM4G.exe 15 2 2->11         started        signatures3 process4 dnsIp5 36 thezonetool.pw 2.59.119.2, 49753, 80 ONLINENETTR Turkey 11->36 38 cdn.discordapp.com 162.159.129.233, 443, 49749 CLOUDFLARENETUS United States 11->38 56 Tries to detect virtualization through RDTSC time measurements 11->56 15 t5g8a4kM4G.exe 11->15         started        18 WerFault.exe 23 9 11->18         started        signatures6 process7 file8 58 Modifies the context of a thread in another process (thread injection) 15->58 60 Maps a DLL or memory area into another process 15->60 62 Sample uses process hollowing technique 15->62 64 Queues an APC in another process (thread injection) 15->64 21 explorer.exe 15->21 injected 32 C:\ProgramData\Microsoft\...\Report.wer, Little-endian 18->32 dropped signatures9 process10 process11 23 mstsc.exe 21->23         started        signatures12 48 Self deletion via cmd delete 23->48 50 Modifies the context of a thread in another process (thread injection) 23->50 52 Maps a DLL or memory area into another process 23->52 54 Tries to detect virtualization through RDTSC time measurements 23->54 26 cmd.exe 1 23->26         started        28 explorer.exe 1 156 23->28         started        process13 process14 30 conhost.exe 26->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/bb81812044069608e1ba320fcb7b878c5b6895f5bf91c93027ab4161042d01c7/
Threat name:
ByteCode-MSIL.Trojan.TinyAGen
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Status:
Malicious
First seen:
2022-02-18 17:55:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
2
AV detection:
14 of 28 (50.00%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
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2fd3db9eb65d7a120e24e7245a73e4e88d4b2a7998d82986e8b2e2f20af1d932
Formbook
7cbd8cc35b03d65491ad01b6a44b84dc047e6663189554201c24dbfbeb81473c
Formbook
826837df6dde8385f31f1a25df7ebdf946b9519af3142bfb87d4b9196f3822f1
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94517fa5a38b384136a3027f7588daa605494dd888e4658cb89d521f5fb2d55a
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a6e23730cd711af23e7900cbabb871b668d37a74dda0c97d63f3303167861cf5
Formbook
c770def66ece0d6100ca50a3b54898be0c177e7d0baddd8803785571f83c1c1a
Formbook
d2cc3484cdabe8305bf9afd35530ca1118ca2c308408dc7140c3a94b392b60bb
Formbook
f777ad0feb1db2da7abb7c793515f7af49d06a7b4fc5904a9da436ccbd59ddc3
Formbook
+ 13'474 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader campaign:ahc8 loader rat
Link:
https://tria.ge/reports/220218-wgygcacgd8/
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Downloads MZ/PE file
Xloader Payload
Suspicious use of NtCreateProcessExOtherParentProcess
Xloader
Unpacked files
SH256 hash:
bb81812044069608e1ba320fcb7b878c5b6895f5bf91c93027ab4161042d01c7
MD5 hash:
92c35904f4cf224c1a26f7162e465b02
SHA1 hash:
d4d1635404188075b42f49c4714cc85faa54e71c
Link:
https://www.unpac.me/results/1ff9ded7-acb2-4732-8c16-5351956b3ef6/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/bb81812044069608e1ba320fcb7b878c5b6895f5bf91c93027ab4161042d01c7

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:pe_imphash
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Rule name:Skystars_Malware_Imphash
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Author:Skystars LightDefender
Description:imphash

File information

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

Web download

Formbook

Executable exe bb81812044069608e1ba320fcb7b878c5b6895f5bf91c93027ab4161042d01c7

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/242583/
  
URLhaus
https://urlhaus.abuse.ch/url/2045122/
  
Delivery method
Distributed via web download

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