MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77
SHA3-384 hash: 2a9706a4f22a4a2d1b457ef143fe5fb887d32c8056fa29808a4c84055e5ea90c2671c1eec1a1208b6e18965a6754aeae
SHA1 hash: de0e33c322390913f148489a13d55f345e3e8525
MD5 hash: 8c569aa9c47d86770920669ee2f28eb1
humanhash: freddie-skylark-moon-september
File name:8c569aa9c47d86770920669ee2f28eb1.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'191'424 bytes
First seen:2022-03-18 11:43:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'462 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 24576:UVy/wf9/NWikHd4p6ijrJOZG82kk9Z7Q9226CXtZH9iqGG:UVyoV4iCdyH87Q7Q9TtZH9iqGG
Threatray 13'932 similar samples on MalwareBazaar
TLSH T10745122569740676E5BDD3F8D0A5909013F32677C4A7E35E6FD9B0EB2E32350803AA1B
File icon (PE):PE icon
dhash icon b3b3333969693b3b (69 x Formbook, 63 x AgentTesla, 26 x Loki)
Reporter abuse_ch
Tags:exe FormBook

Intelligence

File Origin
# of uploads :
1
# of downloads :
199
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/252563/
Detection(s):
Win.Dropper.LokiBot-9942004-0
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Unauthorized injection to a recently created process
Creating a file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/623470a8b94fb38cb4a2a374/reports/12a8c149-7103-4e40-88dd-1dbc648266b1/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e0987e4d-c4ff-4aad-9c13-801d004c4f69
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/959450
Signature
.NET source code contains potential unpacker
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
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
Self deletion via cmd delete
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to detect virtualization through RDTSC time measurements
Yara detected AntiVM3
Yara detected FormBook
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-18 12:52:36 UTC
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Similar samples:
059bdd3a82690647000d29fd9d7957782518cf71ab9c848666992508c4bb0c2e
Formbook
154e83d504788a5a1a35d1758157daefaed1810f8752601cf4dd5577d626b59b
Formbook
2ed8aeaf73ee1a3caf7eb0be7814868c4100efbe1b021e2d964db3b638dc7f3c
Formbook
4fd44b1855341a3f6f31e08e4ad288747ecb8e5b8637b95fff99aa689de07446
Formbook
6d1ae3278059d592ae7c4426df9456553b8abfbc3bd90ce0f8d1792e94ae95c2
Formbook
81ca38001ad9f05b6f89e4e956cbd1efce397ebdb516b6e381c777e28b6dadbb
Formbook
9577df8b7e48bb30b9bd48e49c548d45cc5cc4a9bf1b93aa79f4ab35fc977cb3
Formbook
ec575e5cdf3da323c27e65f3042586173ca50ba0682b733a61f0b47f80c3004e
Formbook
+ 13'922 additional samples on MalwareBazaar
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:g2e7 rat spyware stealer trojan
Link:
https://tria.ge/reports/220318-nv7yyahgfm/
Behaviour
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Drops file in Windows directory
Suspicious use of SetThreadContext
Formbook Payload
Formbook
Unpacked files
SH256 hash:
6f290dff7c68f73aff45d09c3ea10847f1305b59ca09bba6b87b0bfb24cf6553
MD5 hash:
bb9017e04aab48de8eba50f5704933f5
SHA1 hash:
85cdd5fed8703d98af059b9b3892ccc7a2a5bf0c
Detections:
win_formbook_g0
Create hunting rule
win_formbook_auto
Create hunting rule
Link:
https://www.unpac.me/results/99008eb3-86da-4a82-82a8-209db45b10a1/
Parent samples :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 hash:
1fe5ebe3a1a86d843b6418cf492cf9bbb3b1349b7c39a53420866fd15e90ad01
MD5 hash:
bd4281b8dd7f302b6b718d7122777e1f
SHA1 hash:
feeb648493193d11f05679311a90068c7789c8ce
Link:
https://www.unpac.me/results/99008eb3-86da-4a82-82a8-209db45b10a1/
SH256 hash:
6ff21c090296e9fd3ec2b17e03e184e2396adf4013b2a4f4c9dea5bd7aff38f7
MD5 hash:
7c3fb3e3d91e338ae917c4cb46895e71
SHA1 hash:
ba577b8ccb3c6bbc5e9e3a838aec98859cd4dbaa
Link:
https://www.unpac.me/results/99008eb3-86da-4a82-82a8-209db45b10a1/
SH256 hash:
11ac42bbc55e311f7ae66fa91a96ec7f63701006e0d92dffd32dec4f54197169
MD5 hash:
e40ccb5c6cce7ca6ea9b09b73f316312
SHA1 hash:
7efa95cca597c95d96751b33ed51ce5986e38ec8
Link:
https://www.unpac.me/results/99008eb3-86da-4a82-82a8-209db45b10a1/
SH256 hash:
c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77
MD5 hash:
8c569aa9c47d86770920669ee2f28eb1
SHA1 hash:
de0e33c322390913f148489a13d55f345e3e8525
Link:
https://www.unpac.me/results/99008eb3-86da-4a82-82a8-209db45b10a1/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/c6a3fd36f07d/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77

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:pe_imphash
Create hunting rule
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.

Web download

Formbook

Executable exe c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2096984/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/252563/

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