MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 81b701b74f557324be98166125668e62dd26c441f7c8f446103475b5cf4807ba. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 81b701b74f557324be98166125668e62dd26c441f7c8f446103475b5cf4807ba
SHA3-384 hash: 5c00833cdd36247ebaaa182c3adcadb42d5690ad904ec2a4820ea1833fc7916cf4ee6643cfab32d369543d6c1c99dfd5
SHA1 hash: 4fe5262c56e3b5b6e51dec886be54aef78761946
MD5 hash: f72b8734f39ee207d84263b44ba292ae
humanhash: sodium-zebra-whiskey-thirteen
File name:f72b8734f39ee207d84263b44ba292ae.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:785'408 bytes
First seen:2021-02-22 07:44:22 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'469 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:+b88F5ZNvM86VLYsbTXyFt5SgaiCJ2L39SA4w:G88FO0sbba5SzJ25
Threatray 5 similar samples on MalwareBazaar
TLSH 5DF48D1162A8567CE87BA7395A70510F8BF27D67EA32C64F3D81318F4D72E418772B22
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/118273/
Result
Verdict:
Clean
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
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/613775
Signature
.NET source code contains potential unpacker
.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)
Modifies the prolog of user mode functions (user mode inline hooks)
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
Writes to foreign memory regions
Yara detected AntiVM_3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 355899 Sample: RdLlHaxEKP.exe Startdate: 22/02/2021 Architecture: WINDOWS Score: 100 35 www.royalpetcanvas.com 2->35 37 royalpetcanvas.com 2->37 45 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->45 47 Found malware configuration 2->47 49 Malicious sample detected (through community Yara rule) 2->49 51 8 other signatures 2->51 11 RdLlHaxEKP.exe 3 2->11         started        signatures3 process4 file5 33 C:\Users\user\AppData\...\RdLlHaxEKP.exe.log, ASCII 11->33 dropped 61 Writes to foreign memory regions 11->61 63 Injects a PE file into a foreign processes 11->63 15 vbc.exe 11->15         started        18 vbc.exe 11->18         started        signatures6 process7 signatures8 65 Modifies the context of a thread in another process (thread injection) 15->65 67 Maps a DLL or memory area into another process 15->67 69 Sample uses process hollowing technique 15->69 71 Queues an APC in another process (thread injection) 15->71 20 explorer.exe 15->20 injected 73 Tries to detect virtualization through RDTSC time measurements 18->73 process9 dnsIp10 39 shreeshyamexporters.com 162.214.184.71, 49726, 80 UNIFIEDLAYER-AS-1US United States 20->39 41 www.so0551.com 173.82.229.126, 49733, 80 MULTA-ASN1US United States 20->41 43 4 other IPs or domains 20->43 53 System process connects to network (likely due to code injection or exploit) 20->53 24 mstsc.exe 20->24         started        27 autoconv.exe 20->27         started        signatures11 process12 signatures13 55 Modifies the context of a thread in another process (thread injection) 24->55 57 Maps a DLL or memory area into another process 24->57 59 Tries to detect virtualization through RDTSC time measurements 24->59 29 cmd.exe 1 24->29         started        process14 process15 31 conhost.exe 29->31         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/81b701b74f557324be98166125668e62dd26c441f7c8f446103475b5cf4807ba/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-02-22 07:45:07 UTC
AV detection:
15 of 46 (32.61%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=qg3qdn2pkvzsjpuyczqskzuomlosnrcb67epirqqgr23lt2ia65a._file
Verdict:
unknown
Similar samples:
1d0aa1485b2e4d3e411e2d2e9ddfc3763120082cc039972770d5aa882fd4cb87
Formbook
3522ddfe2f7474bb41cef6015aace8681c77d2c6570d0600eab409caff68a251
Formbook
3a819a1cbc8d0a2f94bae5aa3545cb686763d8136a43914193f09f9e53b7c066
Formbook
519282aae605f44e961c8f3d83e6e6d191d2299fc29c97c12461f3ecf37499cd
Formbook
b20c3245ef7cde5dc9429ef1bcef75cba906df8c09b28b29ac882f62135491a7
Formbook
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook rat spyware stealer trojan
Link:
https://tria.ge/reports/210222-jnn5lcvpw2/
Behaviour
Gathers network information
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Uses the VBS compiler for execution
Formbook Payload
Formbook
Malware Config
C2 Extraction:
http://www.guanmei2020.com/dyt/
Unpacked files
SH256 hash:
e624003658c4f8b349f567c82229fd15d1e63d3d20fe6f7b4388403038cd2a44
MD5 hash:
b6ce7c1d81b9271eab825ea63de154c3
SHA1 hash:
0e7b89555314f8908c1098b652c9bf50e5ecc27b
Link:
https://www.unpac.me/results/a8bab0a7-eb73-4a1e-bfd2-9cdf10586378/
SH256 hash:
81b701b74f557324be98166125668e62dd26c441f7c8f446103475b5cf4807ba
MD5 hash:
f72b8734f39ee207d84263b44ba292ae
SHA1 hash:
4fe5262c56e3b5b6e51dec886be54aef78761946
Link:
https://www.unpac.me/results/a8bab0a7-eb73-4a1e-bfd2-9cdf10586378/
Please note that we are no longer able to provide a coverage score for Virus Total.

File information

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

Web download

Formbook

Executable exe 81b701b74f557324be98166125668e62dd26c441f7c8f446103475b5cf4807ba

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1019427/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/118273/

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