MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a88f94d1c96b0224ac11dd7bcc922173877b9f6a9442b083c3fdca3d40dd1c65. 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


KeyBase


Vendor detections: 6


Intelligence 6 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a88f94d1c96b0224ac11dd7bcc922173877b9f6a9442b083c3fdca3d40dd1c65
SHA3-384 hash: 52d37f21f1e879e787a9be6b9c055e169dd1c653758e5067c763da431867b1dcdd0dc729867662f1d3a67f80de259d38
SHA1 hash: 603427314dd2c13f3ee19571f892675ce65843d5
MD5 hash: 2840288c34a6fe8b9ff0dddc96c8f319
humanhash: undress-blossom-vermont-crazy
File name:2840288c34a6fe8b9ff0dddc96c8f319.exe
Download: download sample
Signature KeyBase
Create hunting rule
File size:688'128 bytes
First seen:2020-10-22 16:57:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'744 x AgentTesla, 19'609 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:qiNZ2x2tHNOjLM9GbH2Hk84BYGAKEWOwH7+LPaHG:qiNZ2kNOjLgGr2Hk5Y5WOa+2HG
TLSH 7CE449352D7B0279D43F1672B73BDF8ACE499D542A23C48CA87539C95E32DE19B82036
Reporter abuse_ch
Tags:exe KeyBase


Avatar
abuse_ch
KeyBase C2:
http://buzzcourer.com/dxb/apn/keybase/login.php/post.php

Intelligence

File Origin
# of uploads :
1
# of downloads :
94
Origin country :
n/a
Vendor Threat Intelligence
Detection:
KeyBase
Create hunting rule
Link:
https://www.capesandbox.com/analysis/74742/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Unauthorized injection to a recently created process
Creating a file
Reading critical registry keys
Creating a window
Setting a keyboard event handler
DNS request
Sending an HTTP GET request
Stealing user critical data
Result
Threat name:
MailPassView
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/507515
Signature
Antivirus / Scanner detection for submitted sample
Contains functionality to log keystrokes (.Net Source)
Injects a PE file into a foreign processes
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file access)
Tries to steal Mail credentials (via file registry)
Yara detected MailPassView
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a88f94d1c96b0224ac11dd7bcc922173877b9f6a9442b083c3fdca3d40dd1c65/
Threat name:
ByteCode-MSIL.Infostealer.BrowserThief
Create hunting rule
Status:
Malicious
First seen:
2020-10-22 10:33:33 UTC
File Type:
PE (.Net Exe)
Extracted files:
17
AV detection:
25 of 29 (86.21%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vchzjuojnmbcjlar3v54zerboodxxh3ksrblba6d7xfd2qg5drsq._file
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://tria.ge/reports/201022-zhz7gml6va/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Unpacked files
SH256 hash:
a88f94d1c96b0224ac11dd7bcc922173877b9f6a9442b083c3fdca3d40dd1c65
MD5 hash:
2840288c34a6fe8b9ff0dddc96c8f319
SHA1 hash:
603427314dd2c13f3ee19571f892675ce65843d5
Link:
https://www.unpac.me/results/51b50f67-ff99-4adf-bd4c-bdf237b3cf82/
SH256 hash:
d83e73ae12591d8d35e845e1d09a8f744b7f0078398dd1be8d3e304744dde990
MD5 hash:
05468f42aea663f756e4cddc42491913
SHA1 hash:
12409d6c199f24b9defd4c3033208df51e58f45e
Link:
https://www.unpac.me/results/51b50f67-ff99-4adf-bd4c-bdf237b3cf82/
SH256 hash:
1e6f9c756152f48d9befa73cc20a713bf64bf116375a60c404e28701b7c971e9
MD5 hash:
dc4ca15bd566def0259edf6d0f692eb0
SHA1 hash:
15c68ee53976bcf8347c4c4b97456e6c9be8e08a
Link:
https://www.unpac.me/results/51b50f67-ff99-4adf-bd4c-bdf237b3cf82/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:KeyBase
Create hunting rule
Author:@bartblaze
Description:Identifies KeyBase aka Kibex.
Rule name:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:MALW_KeyBase
Create hunting rule
Author:@bartblaze
Description:Identifies KeyBase aka Kibex.
Rule name:Typical_Malware_String_Transforms
Create hunting rule
Author:Florian Roth
Description:Detects typical strings in a reversed or otherwise modified form
Reference:Internal Research
Rule name:win_keybase_w0
Create hunting rule
Author:@bartblaze
Description:Identifies KeyBase aka Kibex.

File information

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

Web download

KeyBase

Executable exe a88f94d1c96b0224ac11dd7bcc922173877b9f6a9442b083c3fdca3d40dd1c65

(this sample)

Cape
Cape
https://www.capesandbox.com/analysis/74742/
  
URLhaus
https://urlhaus.abuse.ch/url/733679/
  
Delivery method
Distributed via web download

Comments