MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 837190526b767762ec8c3ef33513415f65bb7c53b5e99502dd679fe0ce996937. 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: 9


Intelligence 9 IOCs YARA 2 File information Comments
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SHA256 hash: 837190526b767762ec8c3ef33513415f65bb7c53b5e99502dd679fe0ce996937
SHA3-384 hash: 539b1b291e06f39b20592affbe9ff051d165c395dac3077da03e2eebbaa934c9dc0bb5a99432ddc0ac8578bbdccad7a3
SHA1 hash: cb94be643d48dfd0f13f42778e2ccee469deac9f
MD5 hash: 7bc2e2416e169d2ea240110f7593fde9
humanhash: east-muppet-edward-social
File name:pago sunat 250521.exe
Download: download sample
Signature Formbook
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File size:916'992 bytes
First seen:2021-05-26 07:36:17 UTC
Last seen:2021-05-26 09:18:55 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'658 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:4hb4KeUMQpQbXgcMnDp2wt9KCus1cm4tPl4:4xZMGQiDp2wt9FfcmON
Threatray 5'462 similar samples on MalwareBazaar
TLSH CA15AE2C252EF522C2A8C27E86C9442BE6A0D7373171BE66ECD7275C5708F817D9217E
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
114
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
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Link:
https://www.capesandbox.com/analysis/162276/
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.36972427.11451.21987.UNOFFICIAL
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Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792380
Signature
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 424777 Sample: pago sunat 250521.exe Startdate: 26/05/2021 Architecture: WINDOWS Score: 100 34 www.the-djay.com 2->34 36 www.ultimatefilmstore.com 2->36 38 2 other IPs or domains 2->38 48 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->48 50 Found malware configuration 2->50 52 Malicious sample detected (through community Yara rule) 2->52 54 8 other signatures 2->54 11 pago sunat 250521.exe 3 2->11         started        signatures3 process4 file5 32 C:\Users\user\...\pago sunat 250521.exe.log, ASCII 11->32 dropped 64 Injects a PE file into a foreign processes 11->64 15 pago sunat 250521.exe 11->15         started        18 pago sunat 250521.exe 11->18         started        signatures6 process7 signatures8 66 Modifies the context of a thread in another process (thread injection) 15->66 68 Maps a DLL or memory area into another process 15->68 70 Sample uses process hollowing technique 15->70 72 Queues an APC in another process (thread injection) 15->72 20 explorer.exe 15->20 injected process9 dnsIp10 40 onwindows-pt.setupdns.net 81.88.57.91, 49734, 80 REGISTER-ASIT Italy 20->40 42 www.3588385.com 83.150.226.209, 80 POWERLINE-AS-APPOWERLINEDATACENTERHK Hong Kong 20->42 44 13 other IPs or domains 20->44 56 System process connects to network (likely due to code injection or exploit) 20->56 24 cmmon32.exe 12 20->24         started        signatures11 process12 dnsIp13 46 www.3588385.com 24->46 58 Modifies the context of a thread in another process (thread injection) 24->58 60 Maps a DLL or memory area into another process 24->60 62 Tries to detect virtualization through RDTSC time measurements 24->62 28 cmd.exe 1 24->28         started        signatures14 process15 process16 30 conhost.exe 28->30         started       
Detection:
formbook
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Link:
https://mwdb.cert.pl/sample/837190526b767762ec8c3ef33513415f65bb7c53b5e99502dd679fe0ce996937/
Threat name:
ByteCode-MSIL.Spyware.Noon
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Status:
Malicious
First seen:
2021-05-26 01:44:46 UTC
AV detection:
14 of 46 (30.43%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qnyzautloz3wf3emh3ztke2bl5s3w7ctwxuzkaw5m6p6btuzne3q._file
Verdict:
malicious
Label(s):
formbook
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Similar samples:
3638ac885ef63f3b5bfadd95b0f43c34c3854e2483adde873b3d5fca7a831632
Formbook
5397f0168be76c7e5efee936d341eb359b9015af5e77631129dc0664105e9259
Formbook
5ee7421dbf8127f1c6ff086299b2a1c638ca26a61a649f1cb61230814d0ff4e8
Formbook
77f75ced9cfdb9bff40e705aaced15795f123e460db0fcb97463e0515aaf8af1
Formbook
7ec78d6c2c919a22185cb0000f2e273d66019b8409a3ca47c819d44cedead22e
Formbook
87ad57ffa31e9b3481663bd81249ec1e563dc2931bb4bb2045b06ea7917f1593
Formbook
e713f71dced099e1ed7db81eb22b4e79fb412f08ca0915e8cdebb5b6051aee67
Formbook
f2a1b48f82208d3d1bf4e613fd7c6a16f63c96ebb2c31ed502ec67cb6768b2f6
Formbook
f96442a26d160132827a3b109acadaf4aad9dab625939103677cc93783c93ea6
Formbook
fad8f6a07c20b0594611901f079ab4ad87c3c0a3ff5e776eee1f86b4b56abd4c
Formbook
+ 5'452 additional samples on MalwareBazaar
Result
Malware family:
xloader
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Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210526-zlbsn88j6j/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Deletes itself
Xloader Payload
Xloader
Malware Config
C2 Extraction:
http://www.instituteforentr.com/ru4a/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/837190526b767762ec8c3ef33513415f65bb7c53b5e99502dd679fe0ce996937

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.

Malspam

Formbook

Executable exe 837190526b767762ec8c3ef33513415f65bb7c53b5e99502dd679fe0ce996937

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/162276/

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