MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a3d5ac40f8cc27fb19a5aeef41569e8c91de45f19609e60af2555fba2540d348. 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


MassLogger


Vendor detections: 11


Intelligence 11 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a3d5ac40f8cc27fb19a5aeef41569e8c91de45f19609e60af2555fba2540d348
SHA3-384 hash: 4b4412aab2b77033cb018311cf5eff5b40377acf6724f4130aa744b3208113a37a53c3e7b7094869a3dfa6ae38651773
SHA1 hash: 5d0f34cf5d9b7ce3ca2698b1bc8443ff5d41ac66
MD5 hash: 1104a7c66dce20e0839b4a8519f68480
humanhash: king-wisconsin-mexico-romeo
File name:yqd2LHZ8y57Bzy4.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:1'094'656 bytes
First seen:2020-12-05 15:25:06 UTC
Last seen:2020-12-05 16:41:49 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 24576:eh3BbOWnDoM/l1E75TsuQTi7jWeU9Jw2u+ex:o3xnDXlOyuQTi7S
Threatray 569 similar samples on MalwareBazaar
TLSH 843501B22175BB6DE53E0FF760E015440FA62D23997DD259BDB230CA31B7B409A44BA3
Reporter abuse_ch
Tags:exe HostGator MassLogger


Avatar
abuse_ch
Malspam distributing MassLogger:

HELO: gateway23.websitewelcome.com
Sending IP: 192.185.47.80
From: Mr. Sales <info@bahraincontractors.net>
Subject: Attached T/T copy for payment.
Attachment: HBE6893.rar (contains "yqd2LHZ8y57Bzy4.exe")

MassLogger SMTP exfil server:
smtp.gmail.com:587

Intelligence

File Origin
# of uploads :
2
# of downloads :
365
Origin country :
n/a
Vendor Threat Intelligence
Detection:
MassLogger
Create hunting rule
Link:
https://www.capesandbox.com/analysis/106883/
Detection(s):
SecuriteInfo.com.Generic.mg.1104a7c66dce20e0.456.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a window
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
DNS request
Sending an HTTP GET request
Using the Windows Management Instrumentation requests
Enabling autorun by creating a file
Result
Verdict:
SUSPICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/556283
Signature
Adds a directory exclusion to Windows Defender
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
May check the online IP address of the machine
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Scheduled temp file as task from temp location
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file access)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected Costura Assembly Loader
Yara detected MassLogger RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 327242 Sample: yqd2LHZ8y57Bzy4.exe Startdate: 05/12/2020 Architecture: WINDOWS Score: 100 33 g.msn.com 2->33 41 Malicious sample detected (through community Yara rule) 2->41 43 Multi AV Scanner detection for dropped file 2->43 45 Sigma detected: Scheduled temp file as task from temp location 2->45 47 9 other signatures 2->47 9 yqd2LHZ8y57Bzy4.exe 6 2->9         started        signatures3 process4 file5 27 C:\Users\user\AppData\...YcjIZNTmpr.exe, PE32 9->27 dropped 29 C:\Users\user\AppData\Local\...\tmpF6B0.tmp, XML 9->29 dropped 31 C:\Users\user\...\yqd2LHZ8y57Bzy4.exe.log, ASCII 9->31 dropped 49 Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines) 9->49 13 yqd2LHZ8y57Bzy4.exe 15 2 9->13         started        17 schtasks.exe 1 9->17         started        19 yqd2LHZ8y57Bzy4.exe 9->19         started        signatures6 process7 dnsIp8 35 smtp.gmail.com 108.177.119.109, 49735, 587 GOOGLEUS United States 13->35 37 elb097307-934924932.us-east-1.elb.amazonaws.com 23.21.126.66, 49730, 80 AMAZON-AESUS United States 13->37 39 2 other IPs or domains 13->39 51 Tries to steal Mail credentials (via file access) 13->51 53 Tries to harvest and steal browser information (history, passwords, etc) 13->53 55 Adds a directory exclusion to Windows Defender 13->55 21 powershell.exe 23 13->21         started        23 conhost.exe 17->23         started        signatures9 process10 process11 25 conhost.exe 21->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a3d5ac40f8cc27fb19a5aeef41569e8c91de45f19609e60af2555fba2540d348/
Threat name:
ByteCode-MSIL.Trojan.Ymacco
Create hunting rule
Status:
Malicious
First seen:
2020-12-05 09:12:03 UTC
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=upk2yqhyzqt7wgnfv3xucvu6rsi54rprsye6mcxskvp3ujka2nea._file
Verdict:
malicious
Label(s):
masslogger
Create hunting rule
Similar samples:
00e08a19f48abe62f711ef9738a94ef764314b98a430765127f1a90a1329e40c
MassLogger
01b712edb711a5ff50c21720fbca31081e9e376b4abd410f235d6d0e0d043726
MassLogger
1e86893e03f2f3bec014fc26e5fabd65fdfa2ddf14111707d0ef20dadf5bcef9
MassLogger
36a4c21f4c6cc8b615bea7141b510fdd5bbae68ee02b262f8215f88f64cf51f6
MassLogger
4988575523d9a0fe1fc226f972e930cf597cf8c001b306d07d7cc5750a45e38b
MassLogger
53683da1f2e21ec38952bbde9fd4e04330333cbda4185d1562f99ab31af17ea5
MassLogger
63a87036c2b530539530402c44995267ad50d4b76db185099407c83923d2ecb3
MassLogger
b5ac541a4baee69325c9f73ba6fe8e93d74fe3c302708373fab4fc0a55e3745b
MassLogger
cc3b971f25d0ad410dbe3b7d1d6235041eb36632d0ea6e8d34a6a94e41d79df3
MassLogger
fdfa7f1312d60c75bcd775c87616b731602bbd1c658bbe63d6069f4243c85553
MassLogger
+ 559 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger spyware stealer
Link:
https://tria.ge/reports/201205-egmv7wkxaj/
Behaviour
Creates scheduled task(s)
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Suspicious use of SetThreadContext
Looks up external IP address via web service
Checks computer location settings
Reads user/profile data of web browsers
MassLogger
MassLogger Main Payload
Unpacked files
SH256 hash:
50bb6fe0a7dc5b49e7543c902df7fd3143d43577818c75f8ded3186963ff4849
MD5 hash:
b63d1d61eceecb178b8686da2c748cfd
SHA1 hash:
097e6ec6e498d7dd0497ec788722b78a9cb17a84
Detections:
win_masslogger_w0
Create hunting rule
Link:
https://www.unpac.me/results/8ca12687-8154-4591-aa0b-d1c5bb186269/
Parent samples :
a3d5ac40f8cc27fb19a5aeef41569e8c91de45f19609e60af2555fba2540d348
aeaa3fec34944cbad83383e98135ea619ede649f95f31edb2cbf1d8626761582
e66fe8dc103a47069c3a56658a72e62e4c17a3d1ed1fbf76185ebd246df7823f
SH256 hash:
c88a66cbf00b12c88e2b970b8bc220e970e8465e56098ced24e97d42be901b94
MD5 hash:
a60401dc02ff4f3250a749965097e13f
SHA1 hash:
3f22d28fd765f831084cb972a8bd071e421c26a1
Link:
https://www.unpac.me/results/8ca12687-8154-4591-aa0b-d1c5bb186269/
SH256 hash:
c3b8570b5798b8f382e257ad816bb030522e58dc7d7219e05b29b033c797eda1
MD5 hash:
8d3ce0485534abecb380961feed8a84b
SHA1 hash:
a3492f1372840e3606a1133211d9bc536ad58d2c
Link:
https://www.unpac.me/results/8ca12687-8154-4591-aa0b-d1c5bb186269/
SH256 hash:
a3d5ac40f8cc27fb19a5aeef41569e8c91de45f19609e60af2555fba2540d348
MD5 hash:
1104a7c66dce20e0839b4a8519f68480
SHA1 hash:
5d0f34cf5d9b7ce3ca2698b1bc8443ff5d41ac66
Link:
https://www.unpac.me/results/8ca12687-8154-4591-aa0b-d1c5bb186269/
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/a3d5ac40f8cc27fb19a5aeef41569e8c91de45f19609e60af2555fba2540d348

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:Keylog_bin_mem
Create hunting rule
Author:James_inthe_box
Description:Contains Keylog
Rule name:masslogger_gcch
Create hunting rule
Author:govcert_ch
Rule name:Quasar_RAT_1
Create hunting rule
Author:Florian Roth
Description:Detects Quasar RAT
Reference:https://www.pwc.co.uk/cyber-security/pdf/cloud-hopper-annex-b-final.pdf
Rule name:win_masslogger_w0
Create hunting rule
Author:govcert_ch

File information

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

Malspam

MassLogger

rar b7c54b61815914adb0b1c7a505e37d40355be9e68727432e2e7753f561ed6955

MassLogger

Executable exe a3d5ac40f8cc27fb19a5aeef41569e8c91de45f19609e60af2555fba2540d348

(this sample)

  
Dropped by
MD5 0d96624a81d1de1b89ac18690ebff1dc
  
Delivery method
Distributed via e-mail attachment
  
Dropped by
SHA256 b7c54b61815914adb0b1c7a505e37d40355be9e68727432e2e7753f561ed6955
Cape
Cape
https://www.capesandbox.com/analysis/106883/

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