MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 99ae2d3c813970e279188fa1fce92e70ac2ba63c03d2d04fd6f719d4953169c3. 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: 7


Intelligence 7 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 99ae2d3c813970e279188fa1fce92e70ac2ba63c03d2d04fd6f719d4953169c3
SHA3-384 hash: dc640440bf743e3de2bc0bd4d9234a34fc9952bfffdd09f5c5dfd4ff7bce65cdee752a54b0835db58b80da4dfaf53362
SHA1 hash: 37606ad79dc95aa05ce84538fdd44d48760def08
MD5 hash: c067011c5c9dc7d9205b7a69e2c92633
humanhash: aspen-alpha-georgia-twelve
File name:c067011c5c9dc7d9205b7a69e2c92633.exe
Download: download sample
Signature FormBook
Create hunting rule
File size:448'016 bytes
First seen:2020-09-04 06:02:12 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 7c2c71dfce9a27650634dc8b1ca03bf0 (160 x Loki, 58 x Formbook, 55 x Adware.Generic)
ssdeep 12288:kanypYmOzSKamyVmICJf887/GF2nmG+74/wS4JD3qFE8:KamOPd3ICp887fOsw/hQE8
TLSH 7C94230072A1F9E3DB2E42F824367B197BE4C75D215549871FD0AAC6BD295CA8D0F2D2
Reporter abuse_ch
Tags:exe FormBook


Avatar
abuse_ch
FormBook payload URL:
http://chinesewsdyhigncomeiscausedbythepan18fql.duckdns.org/chnsfrnd3/winlog.exe

FormBook C2:
http://www.porcber.com/jjk/

Intelligence

File Origin
# of uploads :
1
# of downloads :
181
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/55486/
Detection(s):
PUA.Win.Downloader.Soft32downloader-6691270-0
Create hunting rule

PUA.Win.Adware.Browserio-6725861-0
Create hunting rule

SecuriteInfo.com.Artemis162931E90DCF.4593.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file in the %temp% directory
Creating a file
Creating a file in the %AppData% subdirectories
Launching a process
Sending a UDP request
Launching cmd.exe command interpreter
Setting browser functions hooks
Forced shutdown of a system process
Unauthorized injection to a system process
Unauthorized injection to a browser process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/459869
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Benign windows process drops PE files
Detected FormBook malware
Drops or copies cmd.exe with a different name (likely to bypass HIPS)
Hijacks the control flow in another process
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)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Overwrites code with unconditional jumps - possibly settings hooks in foreign process
Queues an APC in another process (thread injection)
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 282335 Sample: hbHtkchGzx.exe Startdate: 04/09/2020 Architecture: WINDOWS Score: 100 69 Malicious sample detected (through community Yara rule) 2->69 71 Antivirus detection for dropped file 2->71 73 Antivirus / Scanner detection for submitted sample 2->73 75 5 other signatures 2->75 11 hbHtkchGzx.exe 51 2->11         started        process3 file4 47 C:\Users\user\AppData\...\DobbyTropicbird.dll, PE32 11->47 dropped 49 C:\Users\user\AppData\Roaming\...\undname.exe, PE32+ 11->49 dropped 51 C:\Users\user\AppData\...\u2lsamp1.dll, PE32 11->51 dropped 53 10 other files (none is malicious) 11->53 dropped 14 rundll32.exe 11->14         started        process5 signatures6 91 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 14->91 93 Hijacks the control flow in another process 14->93 95 Maps a DLL or memory area into another process 14->95 17 cmd.exe 14->17         started        process7 signatures8 61 Detected FormBook malware 17->61 63 Overwrites code with unconditional jumps - possibly settings hooks in foreign process 17->63 65 Modifies the context of a thread in another process (thread injection) 17->65 67 3 other signatures 17->67 20 explorer.exe 1 6 17->20 injected process9 dnsIp10 55 www.ksplaza.com 162.255.118.194, 49742, 49743, 49744 NAMECHEAP-NETUS United States 20->55 57 www.joepolifroni.net 205.178.189.131, 49745, 49746, 49747 DEFENSE-NETUS United States 20->57 59 www.shopforfun.site 209.99.40.222, 49729, 80 CONFLUENCE-NETWORK-INCVG United States 20->59 39 C:\Users\user\AppData\Local\...\o8t8ftaz7.exe, PE32 20->39 dropped 41 C:\Program Files (x86)\K5jm\o8t8ftaz7.exe, PE32 20->41 dropped 77 System process connects to network (likely due to code injection or exploit) 20->77 79 Benign windows process drops PE files 20->79 81 Drops or copies cmd.exe with a different name (likely to bypass HIPS) 20->81 25 cmd.exe 1 17 20->25         started        29 o8t8ftaz7.exe 1 20->29         started        31 autochk.exe 20->31         started        file11 signatures12 process13 file14 43 C:\Users\user\AppData\...\053logrv.ini, data 25->43 dropped 45 C:\Users\user\AppData\...\053logri.ini, data 25->45 dropped 83 Tries to steal Mail credentials (via file access) 25->83 85 Tries to harvest and steal browser information (history, passwords, etc) 25->85 87 Modifies the context of a thread in another process (thread injection) 25->87 89 Maps a DLL or memory area into another process 25->89 33 cmd.exe 1 25->33         started        35 conhost.exe 29->35         started        signatures15 process16 process17 37 conhost.exe 33->37         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/99ae2d3c813970e279188fa1fce92e70ac2ba63c03d2d04fd6f719d4953169c3/
Threat name:
Win32.Trojan.Ymacco
Create hunting rule
Status:
Malicious
First seen:
2020-09-04 06:04:06 UTC
AV detection:
22 of 29 (75.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=tgxc2pebhfyoe6iyr6q7z2joocwcxjr4apjnat6w64m5jfjrnhbq._file
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/200904-v86lxvs7nj/
Behaviour
NSIS installer
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/99ae2d3c813970e279188fa1fce92e70ac2ba63c03d2d04fd6f719d4953169c3

File information

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

Web download

FormBook

Executable exe 99ae2d3c813970e279188fa1fce92e70ac2ba63c03d2d04fd6f719d4953169c3

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/453046/
Cape
Cape
https://www.capesandbox.com/analysis/55486/
  
Delivery method
Distributed via web download

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