MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d77b158058cb4a8ba8817a630e3d664e01f5f4f7cf1069d25e256b987eca1a6f. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: d77b158058cb4a8ba8817a630e3d664e01f5f4f7cf1069d25e256b987eca1a6f
SHA3-384 hash: 953faea6922c10dbd772454a7635a4e4ea52935a0199f43fda0e5f1384b1bb976c5550cd6423bf336bf0fa130f7cac9e
SHA1 hash: a396d47f9be7505b9decd1936e112377ad482921
MD5 hash: e5501df9e8f0bec8f36287ac38d954c2
humanhash: johnny-comet-moon-floor
File name:NEW PO.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:427'008 bytes
First seen:2020-08-13 03:21:34 UTC
Last seen:2020-08-13 04:09:00 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 6144:GJ7JQMQrE8kq/zXeg815Sent0tmGXXYVGW8j2jAJ0sK5:GJ9LQI8kq/KZ4eWmGTmI0s
Threatray 2'240 similar samples on MalwareBazaar
TLSH 45946C3AA581CC2CC9364174743CABC275B96A2D3FD18A2E63DA53887F0149B772761F
Reporter cocaman
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
2
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Formbook
Create hunting rule
Link:
https://www.capesandbox.com/analysis/44709/
Detection(s):
Win.Malware.Formbook-7399661-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Launching a process
Launching cmd.exe command interpreter
Setting browser functions hooks
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Unauthorized injection to a system process
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/424786
Signature
.NET source code contains very large array initializations
Allocates memory in foreign processes
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)
Modifies the prolog of user mode functions (user mode inline hooks)
Queues an APC in another process (thread injection)
Sample uses process hollowing technique
System process connects to network (likely due to code injection or exploit)
Tries to detect virtualization through RDTSC time measurements
Writes to foreign memory regions
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 264954 Sample: NEW PO.exe Startdate: 14/08/2020 Architecture: WINDOWS Score: 100 34 Malicious sample detected (through community Yara rule) 2->34 36 Yara detected FormBook 2->36 38 .NET source code contains very large array initializations 2->38 40 Modifies the prolog of user mode functions (user mode inline hooks) 2->40 10 NEW PO.exe 4 2->10         started        process3 file4 28 C:\Users\user\AppData\...\AddInProcess32.exe, PE32 10->28 dropped 50 Writes to foreign memory regions 10->50 52 Allocates memory in foreign processes 10->52 54 Injects a PE file into a foreign processes 10->54 14 AddInProcess32.exe 10->14         started        signatures5 process6 signatures7 56 Modifies the context of a thread in another process (thread injection) 14->56 58 Maps a DLL or memory area into another process 14->58 60 Sample uses process hollowing technique 14->60 62 2 other signatures 14->62 17 explorer.exe 14->17 injected process8 dnsIp9 30 www.oneamericaappeal.net 17->30 32 ext-sq.squarespace.com 198.185.159.144, 49750, 80 SQUARESPACEUS United States 17->32 42 System process connects to network (likely due to code injection or exploit) 17->42 21 systray.exe 17->21         started        signatures10 process11 signatures12 44 Modifies the context of a thread in another process (thread injection) 21->44 46 Maps a DLL or memory area into another process 21->46 48 Tries to detect virtualization through RDTSC time measurements 21->48 24 cmd.exe 1 21->24         started        process13 process14 26 conhost.exe 24->26         started       
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/d77b158058cb4a8ba8817a630e3d664e01f5f4f7cf1069d25e256b987eca1a6f/
Threat name:
Win32.Trojan.FormBook
Create hunting rule
Status:
Malicious
First seen:
2020-08-07 03:53:18 UTC
File Type:
PE (.Net Exe)
Extracted files:
5
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=255rlacyznfixkebpjrq4plgjya7l5hxz4igtus6evvzq7wkdjxq._file
Verdict:
malicious
Similar samples:
2ad145ebeae4ff20eeb893b16658fe43d7557f30c746edc355a5dceb393bf8bb
Formbook
700f8405954cf77a38e6b103b33e4c7164202e9126b3b76044be35510b2bf440
Formbook
9bf2e6afa0656c8129746c95784146ba85f15ecf46081644192e5bbfd5899144
Formbook
a09022457c7802a48a3f2ef32b8008da65fb4b28b43c8e6ac37c44f0a3ecc028
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b3289e282e7c031fde98778bac0057bad5d933c85da0b43d95f177c6333fc3c2
Formbook
d05efc3d09d7c08668da10c09101815e0af2f3376a03512e959ca467835b9c26
Formbook
e2ee2925682e188e41fcdf49f0274de4617fc3a9506ad31be7a9caeca6d21b38
Formbook
e548234adb2b484793484466ef99084bb77854de66782af91e38420a198b4f83
Formbook
e6d371badc121f232f4305f3a50f0a136d1b7edbc3337414ca692c26ae41986c
Formbook
f4ca965db7cfd5944b5d6902f391f91f7c3994973955f2af97a91ec146977cc4
Formbook
+ 2'230 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
rat family:formbook
Link:
https://tria.ge/reports/200813-v972a1h59e/
Behaviour
Formbook family
Formbook Payload
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Kryptik
Score:
0.70
Link:
https://yomi.yoroi.company/submissions/d77b158058cb4a8ba8817a630e3d664e01f5f4f7cf1069d25e256b987eca1a6f

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:Formbook
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect Formbook in memory
Reference:internal research
Rule name:win_formbook_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

Malspam

Formbook

z d52cd6e109f8f4688257c2b92a6d58ffd2ae88abc5ffca1120756e4cd599fac5

Formbook

Executable exe d77b158058cb4a8ba8817a630e3d664e01f5f4f7cf1069d25e256b987eca1a6f

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 d52cd6e109f8f4688257c2b92a6d58ffd2ae88abc5ffca1120756e4cd599fac5
Cape
Cape
https://www.capesandbox.com/analysis/44709/

Comments