MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 431062b66c0d6b55b34049aa675cbd69534b1680cf60578f57cebacf9d4d5bb9. 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: 13


Intelligence 13 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 431062b66c0d6b55b34049aa675cbd69534b1680cf60578f57cebacf9d4d5bb9
SHA3-384 hash: 59bc8a563655b88dc1c5e97efd4414ddf0da5552b8ec81603405f629e9401e9297e4f5454467d271f151f96476d23820
SHA1 hash: 0939915dcc709417e15c35b5dd7989aadcba29cb
MD5 hash: daf5688d23e63b9278a076a6e85af77b
humanhash: table-zulu-wolfram-thirteen
File name:WST83770OK-PLXE78839FHI-MFTYU348940.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:794'632 bytes
First seen:2025-01-29 14:03:27 UTC
Last seen:2025-02-07 14:24:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'665 x AgentTesla, 19'478 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:PzSggsi6RjnMKT1VhlksZi0X3s7t0SnlNOsAq9nvmpZ96uS0Jkr4sIrMKflNlkR:Pz9RMEVrXi0M7t0SzOsxvmfSpIrhflNY
TLSH T180F48EC02BE46749CD3E6634A855EC7013713E29B471FAE66ADCB35336B92118D29F0E
TrID 71.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
10.2% (.EXE) Win64 Executable (generic) (10522/11/4)
6.3% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.3% (.EXE) Win32 Executable (generic) (4504/4/1)
2.0% (.ICL) Windows Icons Library (generic) (2059/9)
Magika pebin
File icon (PE):PE icon
dhash icon 8e49656555009595 (2 x AgentTesla, 1 x MassLogger)
Reporter threatcat_ch
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
502
Origin country :
CH CH
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Win32.MalwareX-gen.14023.20716.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
95.7%
Link:
https://cyber-fortress.com/docs/result/index.php?id=679a36d439cd5095f12b4e67
Tags:
injection snake virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Launching a process
Creating a file
DNS request
Connection attempt
Sending an HTTP GET request
Sending a custom TCP request
Reading critical registry keys
Unauthorized injection to a system process
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated obfuscated packed packed packer_detected vbnet
Link:
https://www.filescan.io/uploads/679a355618ab66742bb2e9ec/reports/d2566950-6f36-4da3-a49b-647869a6c50c/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/431062b66c0d6b55b34049aa675cbd69534b1680cf60578f57cebacf9d4d5bb9
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:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2096e5e9-b434-44c5-98d4-9eed148294ba
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1602191
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Allocates memory in foreign processes
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Tries to detect the country of the analysis system (by using the IP)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected MassLogger RAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/431062b66c0d6b55b34049aa675cbd69534b1680cf60578f57cebacf9d4d5bb9
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/431062b66c0d6b55b34049aa675cbd69534b1680cf60578f57cebacf9d4d5bb9/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-01-29 12:08:03 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 22 (86.36%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=imigfntmbvvvlm2ajgvgoxf5nfjuwfuaz5qfpd2xz25m7hknlo4q._file
Verdict:
malicious
Label(s):
snakekeylogger
Create hunting rule
unknown_loader_037
Create hunting rule
Similar samples:
error
MassLogger
Result
Malware family:
n/a
Score:
  6/10
Tags:
collection discovery
Link:
https://tria.ge/reports/250129-rc9llazpcx/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Verdict:
Malicious
Tags:
404keylogger
YARA:
n/a
Link:
https://app.threat.zone/submission/97448517-6b41-47e1-a9f1-6aa29fced81d
Unpacked files
SH256 hash:
0b3949e224298a76faef3053d268111928a658dc5bea4dff9b1ea18e73524eff
MD5 hash:
276930025addec1f45c8882ecc45665e
SHA1 hash:
ebc20edea8b8b17e267ec3670baefdd87b815a41
Detections:
win_masslogger_w0
Create hunting rule
win_404keylogger_g1
Create hunting rule
MAL_Envrial_Jan18_1
Create hunting rule
INDICATOR_SUSPICIOUS_Binary_References_Browsers
Create hunting rule
INDICATOR_SUSPICIOUS_EXE_TelegramChatBot
Create hunting rule
Link:
https://www.unpac.me/results/874bc348-e2b9-405c-aaf9-1870e26afdca/
SH256 hash:
2d2a5561a0471e87d35c207ff206b04c8a47bd4a97767554b3b54ba0e0c60d1e
MD5 hash:
4d2556428476811596294f2b9a7d1ac8
SHA1 hash:
a598a97a5a28dfe49ba05aeeeeb248c4b594bf7d
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/874bc348-e2b9-405c-aaf9-1870e26afdca/
SH256 hash:
5f7925fadc546c93fb006f23940cf580802417139d6544bc63a821740d697c9d
MD5 hash:
83ffe9af0569078e80e6aba4d4b88809
SHA1 hash:
03ec5cff9dacf99cc1d10953f9f95306a84ac4d3
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/874bc348-e2b9-405c-aaf9-1870e26afdca/
SH256 hash:
431062b66c0d6b55b34049aa675cbd69534b1680cf60578f57cebacf9d4d5bb9
MD5 hash:
daf5688d23e63b9278a076a6e85af77b
SHA1 hash:
0939915dcc709417e15c35b5dd7989aadcba29cb
Link:
https://www.unpac.me/results/874bc348-e2b9-405c-aaf9-1870e26afdca/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/431062b66c0d/report/overview.html
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:INDICATOR_KB_CERT_7c1118cbbadc95da3752c46e47a27438
Create hunting rule
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:NET
Create hunting rule
Author:malware-lu
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)

File information

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

Malspam

MassLogger

Executable exe 431062b66c0d6b55b34049aa675cbd69534b1680cf60578f57cebacf9d4d5bb9

(this sample)

  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high

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