MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 334ab59399997e54878083e726a2dbc5d41f844025742b4ea35921a93bf24d68. 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


AsyncRAT


Vendor detections: 6


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

SHA256 hash: 334ab59399997e54878083e726a2dbc5d41f844025742b4ea35921a93bf24d68
SHA3-384 hash: dd78a28f78c7a801fc8476df039e735b30eb27322e2fdea0c5f780c88994124a2bb556edb0f374bb2ebdc6d818345ac0
SHA1 hash: 6bc0362dbdabb231d623d08d889d65eb812ecd03
MD5 hash: 63a37df730cee021c6660cce6be272e0
humanhash: lake-wolfram-eight-north
File name:Transfer ConfirmationRef MT103 _0012822.exe
Download: download sample
Signature AsyncRAT
Create hunting rule
File size:476'672 bytes
First seen:2020-10-26 15:34:55 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:88PnEUDS5CoGgRGgBxESry4yRl+VqkOc1/WjS7iB7AP7:16FGgRZByS+40ljOKS8K
Threatray 429 similar samples on MalwareBazaar
TLSH 3CA4303D6E8426E3A277E676A0F50587FEE8618673785D4B02C32B492D4AF023D9734D
Reporter abuse_ch
Tags:AsyncRAT exe nVpn RAT


Avatar
abuse_ch
Malspam distributing AsyncRAT:

HELO: linuxserver.mirackle.com
Sending IP: 67.55.118.192
From: Account-Dept Maria <kavonuis.leonidas@gmail.com>
Subject: Re:Confirmation transfer
Attachment: Transfer Confirmation Ref MT103 _0012822.zip (contains "Transfer ConfirmationRef MT103 _0012822.exe")

AsyncRAT C2:
freshg.ddns.net:2256 (185.140.53.141)

Pointing to nVpn:

% Information related to '185.140.53.0 - 185.140.53.255'

% Abuse contact for '185.140.53.0 - 185.140.53.255' is 'abuse@privacyfirst.sh'

inetnum: 185.140.53.0 - 185.140.53.255
remarks: This prefix is assigned to The PRIVACYFIRST Project, which
remarks: operates infrastructure jointly used by various VPN service
remarks: providers. We have a very strong focus on privacy and freedom.
remarks: In case of abuse, we encourage all international law enforcement
remarks: agencies to get in touch with our abuse contact. Due to the fact
remarks: that we keep no logs of user activities and only share data when
remarks: it is legally required under our jurisdiction, it is very unlikely
remarks: for a demand of user information to be successful. Still, that
remarks: should not deter you from reaching out.
netname: PRIVACYFIRST-BE
country: BE
admin-c: TPP15-RIPE
tech-c: TPP15-RIPE
org: ORG-TPP6-RIPE
status: ASSIGNED PA
mnt-by: PRIVACYFIRST-MNT
created: 2016-10-17T23:24:00Z
last-modified: 2020-10-02T20:59:33Z
source: RIPE

Intelligence

File Origin
# of uploads :
1
# of downloads :
70
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/79311/
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Unauthorized injection to a recently created process
Creating a file
Running batch commands
Creating a process with a hidden window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Enabling autorun by creating a file
Result
Threat name:
AsyncRAT
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/512296
Signature
.NET source code contains very large strings
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Injects a PE file into a foreign processes
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Uses dynamic DNS services
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AsyncRAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 305317 Sample: Transfer ConfirmationRef MT... Startdate: 26/10/2020 Architecture: WINDOWS Score: 100 50 freshg.ddns.net 2->50 58 Antivirus / Scanner detection for submitted sample 2->58 60 Multi AV Scanner detection for submitted file 2->60 62 Yara detected AsyncRAT 2->62 64 4 other signatures 2->64 10 Transfer ConfirmationRef MT103 _0012822.exe 1 2->10         started        13 logs.exe 2->13         started        15 WerFault.exe 2->15         started        signatures3 process4 signatures5 66 Injects a PE file into a foreign processes 10->66 17 Transfer ConfirmationRef MT103 _0012822.exe 6 10->17         started        68 Antivirus detection for dropped file 13->68 70 Multi AV Scanner detection for dropped file 13->70 20 WerFault.exe 22 9 13->20         started        22 logs.exe 2 13->22         started        24 logs.exe 13->24         started        72 Writes to foreign memory regions 15->72 26 Transfer ConfirmationRef MT103 _0012822.exe 15->26 injected process6 file7 48 C:\Users\user\AppData\Roaming\logs.exe, PE32 17->48 dropped 28 cmd.exe 1 17->28         started        30 cmd.exe 1 17->30         started        process8 process9 32 logs.exe 1 28->32         started        35 conhost.exe 28->35         started        37 timeout.exe 1 28->37         started        39 conhost.exe 30->39         started        41 schtasks.exe 1 30->41         started        signatures10 56 Injects a PE file into a foreign processes 32->56 43 logs.exe 2 32->43         started        46 WerFault.exe 32->46         started        process11 dnsIp12 52 freshg.ddns.net 185.140.53.141, 2256, 49734, 49738 DAVID_CRAIGGG Sweden 43->52 54 192.168.2.1 unknown unknown 46->54
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/334ab59399997e54878083e726a2dbc5d41f844025742b4ea35921a93bf24d68/
Threat name:
ByteCode-MSIL.Trojan.Shelma
Create hunting rule
Status:
Malicious
First seen:
2020-10-26 11:18:54 UTC
AV detection:
24 of 29 (82.76%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=gnflle4ztf7fjb4aqptsniw3yxkb7bcaev2cwtvdleq2so7sjvua._file
Verdict:
malicious
Label(s):
asyncrat
Create hunting rule
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c8cc7c1a1210a082960b929c3598521979e16c1c6f5626b8ad29b9618ab5e18c
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d82330b1d9bfbebbff4d21e9ddd0f86e90ed27031ba29557587d182246301ee5
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d90bd5fe1ea6c9d3435e443b030981e2a4842d41b08cb39fc293ba4ea9ad1c9c
AsyncRAT
f0006754d451556014c91039915ea9505f348f80538e536d30b75c5ef252d73d
AsyncRAT
f9cff9e6050b1536e55014e7eafdc8827fb237e9235ff60265c5d1afaa5d5e6e
AsyncRAT
+ 419 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/201026-4jxabf2s7e/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
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:asyncrat
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research
Rule name:INDICATOR_SUSPICIOUS_EXE_ASEP_REG_Reverse
Create hunting rule
Author:ditekSHen
Description:Detects file containing reversed ASEP Autorun registry keys
Rule name:Reverse_text_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Reverse text detected
Rule name:win_asyncrat_j1
Create hunting rule
Author:Johannes Bader @viql
Description:detects AsyncRAT
Rule name:win_asyncrat_w0
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect AsyncRat in memory
Reference:internal research

File information

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

Malspam

AsyncRAT

zip 186d8b9254dec67460972b868da3b385e1494b05c2a340567f043d79842bd2c6

AsyncRAT

Executable exe 334ab59399997e54878083e726a2dbc5d41f844025742b4ea35921a93bf24d68

(this sample)

  
Dropped by
MD5 4f8f2e20f00dda5f6f390897d9bec1dc
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 186d8b9254dec67460972b868da3b385e1494b05c2a340567f043d79842bd2c6
Cape
Cape
https://www.capesandbox.com/analysis/79311/

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