MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 399013dde1bc2ce10effb58c3e970c8bf82d597c3b5f606a0e4ad79567515b2c. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 399013dde1bc2ce10effb58c3e970c8bf82d597c3b5f606a0e4ad79567515b2c
SHA3-384 hash: f8f54e578c20e84bfcc87ec5525bc3c5de5e6b97e4f76fa7db5e18c69ec86a76095bb88cb27292d29259445b8086b024
SHA1 hash: 81a72d2374f444c9998b5bc423ec06d47078208f
MD5 hash: 1c3259e07070105f89c38394ae68557b
humanhash: winter-undress-north-five
File name:arirrylhnq8.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:929'280 bytes
First seen:2020-08-04 23:14:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 4bae7147ec04d935db5914fb885560bb (11 x AgentTesla, 3 x MassLogger, 2 x AZORult)
ssdeep 12288:zz7G/lsTGbsiZQfwgZLObQINANWz3O6Ex7FxBwWakxilVWgZ0yFjQI9g:zetNafLLOM9QKlNwWwTWgtb
Threatray 3'649 similar samples on MalwareBazaar
TLSH 53155AAE779B4433F0B23979BC16DE945D3DBF00B8146641FBE4EA5C2DB862027181E6
Reporter malware_traffic
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
86
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/38923/
Detection(s):
PUA.Win.Adware.Slugin-6803969-0
Create hunting rule

PUA.Win.Adware.Slugin-6840354-0
Create hunting rule

SecuriteInfo.com.Variant.Graftor.807433.11886.16799.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Unauthorized injection to a recently created process
Launching a process
Launching cmd.exe command interpreter
Sending a UDP request
DNS request
Sending an HTTP GET request
Reading critical registry keys
Creating a file in the %temp% directory
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/410029
Signature
Contains functionality to detect sleep reduction / modifications
Detected unpacking (changes PE section rights)
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)
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 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 dnsIp2 2 Behavior Graph ID: 257255 Sample: arirrylhnq8.exe Startdate: 05/08/2020 Architecture: WINDOWS Score: 100 34 www.hotteo.com 2->34 38 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->38 40 Malicious sample detected (through community Yara rule) 2->40 42 Yara detected FormBook 2->42 44 Machine Learning detection for sample 2->44 11 arirrylhnq8.exe 2->11         started        signatures3 process4 signatures5 54 Detected unpacking (changes PE section rights) 11->54 56 Maps a DLL or memory area into another process 11->56 58 Tries to detect virtualization through RDTSC time measurements 11->58 60 Contains functionality to detect sleep reduction / modifications 11->60 14 arirrylhnq8.exe 11->14         started        process6 signatures7 62 Modifies the context of a thread in another process (thread injection) 14->62 64 Maps a DLL or memory area into another process 14->64 66 Sample uses process hollowing technique 14->66 68 Queues an APC in another process (thread injection) 14->68 17 explorer.exe 1 14->17 injected process8 dnsIp9 28 www.magentos2.info 63.250.45.175, 49751, 49752, 80 NAMECHEAP-NETUS United States 17->28 30 projectpaifoundation.ventures 34.102.136.180, 49755, 49756, 49757 GOOGLEUS United States 17->30 32 12 other IPs or domains 17->32 36 System process connects to network (likely due to code injection or exploit) 17->36 21 msiexec.exe 1 12 17->21         started        signatures10 process11 signatures12 46 Tries to steal Mail credentials (via file access) 21->46 48 Tries to harvest and steal browser information (history, passwords, etc) 21->48 50 Modifies the context of a thread in another process (thread injection) 21->50 52 2 other signatures 21->52 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/399013dde1bc2ce10effb58c3e970c8bf82d597c3b5f606a0e4ad79567515b2c/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-04 10:48:51 UTC
AV detection:
42 of 48 (87.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=hgibhxpbxqwocdx7wwgd5fymrp4c2wl4hnpwa2qojllzkz2rlmwa._file
Verdict:
malicious
Label(s):
netwirerc
Create hunting rule
Similar samples:
23958a583d62bf343e2641dd871d6d788c99649a722fe1908fea9e72e78d17b7
Formbook
2cccc56f00e67c1f5a329b4d4815f736f7c866cc2b50e590341ac2e5cd0a85be
Formbook
49411c035bce033585bf1ab27827abf5ead0c9031064848e08014fb1aee182b3
Formbook
5a744c8440f5d46b0bde9abe9086a5f1ee8c1a54104811fee10179d441af5508
Formbook
88df014dc5e57e8da62cb09f796c90f5713efe5e74fd5593abaed5c929ffab27
Formbook
a0086dfee2dba4d6a0adab05e848cfbb9755f68be7adef3ff35ff9740e5a1c2e
Formbook
cde5b9157162c55139f508884d7be6be903acc9d85842a667c1b2ef04a1ecd49
Formbook
d2e60c3bec22bb8dc8e990920648725abd8ffdc1925dee26ed8c8187dd7504c1
Formbook
dea3774e5c5ae207131be64dec69219c8e0274ee90efc6914ceaedf551f255c6
Formbook
e1791b23657d18fc636878f24a44a32f1a2ae4814668600b14b10c03e48c587c
Formbook
+ 3'639 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat trojan spyware stealer family:formbook evasion persistence
Link:
https://tria.ge/reports/200804-4ezy4g6qqe/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Enumerates system info in registry
Suspicious behavior: MapViewOfSection
Modifies Internet Explorer settings
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Drops file in Program Files directory
Suspicious use of SetThreadContext
Checks whether UAC is enabled
Adds Run key to start application
Reads user/profile data of web browsers
Deletes itself
Formbook Payload
Formbook
Malware family:
XLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/399013dde1bc/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Cryptor
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/399013dde1bc2ce10effb58c3e970c8bf82d597c3b5f606a0e4ad79567515b2c

File information

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

Web download

Formbook

Executable exe 399013dde1bc2ce10effb58c3e970c8bf82d597c3b5f606a0e4ad79567515b2c

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/38923/
  
URLhaus
https://urlhaus.abuse.ch/url/424478/
  
Delivery method
Distributed via web download

Comments