MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b71ecfd70a10c73be177dd8fb3a3dcfbc39dc06e7e3646b43c2901e75a79f4a9. 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: 13


Intelligence 13 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b71ecfd70a10c73be177dd8fb3a3dcfbc39dc06e7e3646b43c2901e75a79f4a9
SHA3-384 hash: 0559996bae817f0aa9c1010510f22b9b22e9e1b63313e923959e863a1f7e2ba59297be61c14e664415964e29e596fac9
SHA1 hash: 6df66bcc20c77a3a66af93f88af56f1cd2213ddb
MD5 hash: f863366aa81997f2b9f31e3bc7d15316
humanhash: grey-whiskey-florida-mississippi
File name:f863366aa81997f2b9f31e3bc7d15316.exe
Download: download sample
Signature Formbook
Create hunting rule
File size:1'044'480 bytes
First seen:2022-03-21 08:48:03 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'649 x AgentTesla, 19'461 x Formbook, 12'202 x SnakeKeylogger)
ssdeep 24576:uLHl9DaZ5T3XOBKe9c5TyhMcGwcE6ocD1js7suGG:uLXWpXOBKem5TyhMcNGG
TLSH T16D2523193BB00031CAB79BB1B4F0F5710F775998B153EB14D58AA68A3E1FB150A1B93E
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 :
201
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/253431/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a custom TCP request
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/62383bccb94fb38cb4c192cb/reports/4b755cd7-752a-4392-a453-ac58c7cc4694/overview
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.
Malware family:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/8aa366f9-14a4-4a14-9645-b9e8ec96537e
Result
Threat name:
FormBook
Create hunting rule
Detection:
malicious
Classification:
troj.adwa.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/960580
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)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
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
Yara detected Shellcode strings
Behaviour
Behavior Graph:
Download SVG
Detection:
formbook
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b71ecfd70a10c73be177dd8fb3a3dcfbc39dc06e7e3646b43c2901e75a79f4a9/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2022-03-21 08:48:13 UTC
File Type:
PE (.Net Exe)
Extracted files:
12
AV detection:
20 of 27 (74.07%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
formbook
Create hunting rule
Result
Malware family:
formbook
Create hunting rule
Score:
  10/10
Tags:
family:formbook campaign:g2e7 rat spyware stealer trojan
Link:
https://tria.ge/reports/220321-kqfr4sahcm/
Behaviour
Modifies data under HKEY_USERS
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Program crash
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/b22fccbd-0d52-41f1-964d-b896b56adc17/
Parent samples :
9577df8b7e48bb30b9bd48e49c548d45cc5cc4a9bf1b93aa79f4ab35fc977cb3
81ca38001ad9f05b6f89e4e956cbd1efce397ebdb516b6e381c777e28b6dadbb
059bdd3a82690647000d29fd9d7957782518cf71ab9c848666992508c4bb0c2e
154e83d504788a5a1a35d1758157daefaed1810f8752601cf4dd5577d626b59b
c6a3fd36f07d97fb287fbac946ae8b8d12d1fcde36fa87395de79d59f0c3fb77
b71ecfd70a10c73be177dd8fb3a3dcfbc39dc06e7e3646b43c2901e75a79f4a9
3e3ccb3b130c86bb2d82a52f8a7e191efa9499577ba0a3d3f335d5a1e1597b76
9cfa1deda62a35bf8c2211bf4c1996d880c84c4242308a5d74403a570d70e066
9e3075aeadf4672cd6edfeb02d197a31a05be6330e3d179125c68c9d60893d18
SH256 hash:
6ff21c090296e9fd3ec2b17e03e184e2396adf4013b2a4f4c9dea5bd7aff38f7
MD5 hash:
7c3fb3e3d91e338ae917c4cb46895e71
SHA1 hash:
ba577b8ccb3c6bbc5e9e3a838aec98859cd4dbaa
Link:
https://www.unpac.me/results/b22fccbd-0d52-41f1-964d-b896b56adc17/
SH256 hash:
d9b5faf97feac9adfd516f92ce72a5036dfcab32269bb991a1d4992ba322d485
MD5 hash:
ed204d286610a22667bc0438c5afa20d
SHA1 hash:
b25b1dfe998b18c20b964b439ae4cc536a3f1fa0
Link:
https://www.unpac.me/results/b22fccbd-0d52-41f1-964d-b896b56adc17/
SH256 hash:
28936a1d1d898b66057c1d59ad117375d1a72206fb6b263216a01f17eb67c12c
MD5 hash:
8f06f5107d47e78c66d5f103638f5ab1
SHA1 hash:
aebdda7c9b1d1b17f273709b57f9f2e8858595f2
Link:
https://www.unpac.me/results/b22fccbd-0d52-41f1-964d-b896b56adc17/
SH256 hash:
b71ecfd70a10c73be177dd8fb3a3dcfbc39dc06e7e3646b43c2901e75a79f4a9
MD5 hash:
f863366aa81997f2b9f31e3bc7d15316
SHA1 hash:
6df66bcc20c77a3a66af93f88af56f1cd2213ddb
Link:
https://www.unpac.me/results/b22fccbd-0d52-41f1-964d-b896b56adc17/
Malware family:
FormBook
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/b71ecfd70a10/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.65
Link:
https://yomi.yoroi.company/submissions/b71ecfd70a10c73be177dd8fb3a3dcfbc39dc06e7e3646b43c2901e75a79f4a9

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 b71ecfd70a10c73be177dd8fb3a3dcfbc39dc06e7e3646b43c2901e75a79f4a9

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/2096984/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/253431/

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