MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 83643d0493a1636b5c1e1ff03085e30519501e3081164006c411f07da8261541. 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: 10


Intelligence 10 IOCs YARA 3 File information Comments
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SHA256 hash: 83643d0493a1636b5c1e1ff03085e30519501e3081164006c411f07da8261541
SHA3-384 hash: e03fcbc350b4fcc8bd7b57c7826b1497a6a0f191a3bac9f6df1e247db688b181a7f536debb023abee39e90f8592300ab
SHA1 hash: 093f4ab595a5b39f4554339dfd822e7f1db1905f
MD5 hash: ebcf2a9188a8cc3f266912230f605831
humanhash: two-zebra-queen-mango
File name:Po_23456.pdf.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:665'088 bytes
First seen:2021-05-26 12:53:17 UTC
Last seen:2021-05-26 14:26:25 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'471 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:02jl1rbTTqlagm4cLzi/PBUM/BAwZG3sgIMtoIbvh5tWw0mRslIMQ:fTTqla5u9B3G3spIF5s7
Threatray 5'564 similar samples on MalwareBazaar
TLSH 11E47D3D26A9032BC27DC2B8C9D49427A751E9277613BE9884D223B50B5364B7D9333F
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
117
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Po_23456.pdf.exe
Verdict:
Suspicious activity
Analysis date:
2021-05-27 00:10:12 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/0d463fa2-dd6d-4af1-b61d-b9da850c13ab

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/162397/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.763.18753.1406.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
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.
Result
Threat name:
FormBook
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/792626
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
C2 URLs / IPs found in malware configuration
Found malware configuration
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
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
Sigma detected: Suspicious Double Extension
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
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: 425022 Sample: Po_23456.pdf.exe Startdate: 26/05/2021 Architecture: WINDOWS Score: 100 34 www.topiaegg.net 2->34 36 www.thebeadtrap.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 10 other signatures 2->54 11 Po_23456.pdf.exe 3 2->11         started        signatures3 process4 file5 32 C:\Users\user\...\Po_23456.pdf.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 15 Po_23456.pdf.exe 11->15         started        18 Po_23456.pdf.exe 11->18         started        signatures6 process7 signatures8 70 Modifies the context of a thread in another process (thread injection) 15->70 72 Maps a DLL or memory area into another process 15->72 74 Sample uses process hollowing technique 15->74 76 Queues an APC in another process (thread injection) 15->76 20 explorer.exe 15->20 injected process9 dnsIp10 40 estuyaradiofm.com 162.222.226.202, 49718, 80 PUBLIC-DOMAIN-REGISTRYUS United States 20->40 42 www.vabartum.com 198.2.241.145, 49726, 49729, 80 PEGTECHINCUS United States 20->42 44 16 other IPs or domains 20->44 56 System process connects to network (likely due to code injection or exploit) 20->56 58 Performs DNS queries to domains with low reputation 20->58 24 cmd.exe 12 20->24         started        signatures11 process12 dnsIp13 46 www.vabartum.com 24->46 60 Modifies the context of a thread in another process (thread injection) 24->60 62 Maps a DLL or memory area into another process 24->62 64 Tries to detect virtualization through RDTSC time measurements 24->64 28 cmd.exe 1 24->28         started        signatures14 process15 process16 30 conhost.exe 28->30         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/83643d0493a1636b5c1e1ff03085e30519501e3081164006c411f07da8261541/
Threat name:
ByteCode-MSIL.Trojan.Wacatac
Create hunting rule
Status:
Malicious
First seen:
2021-05-26 10:12:41 UTC
AV detection:
14 of 29 (48.28%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qnsd2betufrwwxa6d7ydbbpdaumvahrqqeleabwechyh3kbgcvaq._file
Verdict:
malicious
Label(s):
formbook
Create hunting rule
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Formbook
+ 5'554 additional samples on MalwareBazaar
Result
Malware family:
xloader
Create hunting rule
Score:
  10/10
Tags:
family:xloader loader rat
Link:
https://tria.ge/reports/210526-a49ml2s7hs/
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.ztcru.com/gad0/
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/83643d0493a1636b5c1e1ff03085e30519501e3081164006c411f07da8261541

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu
Create hunting rule
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:Skystars_Malware_Imphash
Create hunting rule
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 83643d0493a1636b5c1e1ff03085e30519501e3081164006c411f07da8261541

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/162397/

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