MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d. 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: 16


Intelligence 16 IOCs YARA 7 File information Comments
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SHA256 hash: b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
SHA3-384 hash: f0bd2631f4ac865af9bc93625f8f245a0f5d2bb98e8d4c0434c5e833cdcb32b3b6a30c7199cb480bac2e56c142ae3839
SHA1 hash: 10b3417828842531cae1156ef3ea801a2e8d16f1
MD5 hash: e57604e427a13b66da01563f36bc14ad
humanhash: uniform-kansas-william-vegan
File name:packing list.exe
Download: download sample
Signature MassLogger
Create hunting rule
File size:590'344 bytes
First seen:2025-06-16 11:45:32 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'470 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:liP432iO5dbHnSpxxntSgnzac47/Ay8DwKykXuVOwvkR:D2iAdTn0DtfucOD8cLq
Threatray 1'070 similar samples on MalwareBazaar
TLSH T126C4F104269A9E06C5BA0FB51B78D13013B27EDFA422D35B8FD5ACDB3CA2741164B74B
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
Reporter adrian__luca
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
1
# of downloads :
405
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
packing list.exe
Verdict:
Malicious activity
Analysis date:
2025-06-16 12:00:22 UTC
Tags:
netreactor evasion snake keylogger stealer ims-api generic
Link:
https://app.any.run/tasks/dbad8844-643e-43af-833f-6e01b856f099

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/9598/
Detection(s):
SecuriteInfo.com.BackDoor.AgentTeslaNET.35.25286.21889.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
96.5%
Link:
https://cyber-fortress.com/docs/result/index.php?id=685004188bd5d68a12e8cf36
Tags:
virus micro msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/60c40066-4fa5-433f-a308-d9857363312b
Result
Threat name:
MSIL Logger, MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1715408
Signature
.NET source code contains potential unpacker
.NET source code references suspicious native API functions
Adds a directory exclusion to Windows Defender
Allocates memory in foreign processes
Contains functionality to capture screen (.Net source)
Contains functionality to log keystrokes (.Net Source)
Found malware configuration
Injects a PE file into a foreign processes
Joe Sandbox ML detected suspicious sample
Loading BitLocker PowerShell Module
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Sigma detected: Powershell Base64 Encoded MpPreference Cmdlet
Sigma detected: Scheduled temp file as task from temp location
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected MassLogger RAT
Yara detected MSIL Logger
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1715408 Sample: packing list.exe Startdate: 16/06/2025 Architecture: WINDOWS Score: 100 47 reallyfreegeoip.org 2->47 49 checkip.dyndns.org 2->49 51 checkip.dyndns.com 2->51 65 Found malware configuration 2->65 67 Malicious sample detected (through community Yara rule) 2->67 69 Sigma detected: Scheduled temp file as task from temp location 2->69 73 13 other signatures 2->73 8 packing list.exe 7 2->8         started        12 BGiNVfjl.exe 5 2->12         started        14 svchost.exe 2->14         started        signatures3 71 Tries to detect the country of the analysis system (by using the IP) 47->71 process4 dnsIp5 41 C:\Users\user\AppData\Roaming\BGiNVfjl.exe, PE32 8->41 dropped 43 C:\Users\user\AppData\Local\...\tmpDDE8.tmp, XML 8->43 dropped 45 C:\Users\user\...\packing list.exe.log, ASCII 8->45 dropped 75 Writes to foreign memory regions 8->75 77 Allocates memory in foreign processes 8->77 79 Adds a directory exclusion to Windows Defender 8->79 81 Injects a PE file into a foreign processes 8->81 17 powershell.exe 23 8->17         started        20 powershell.exe 23 8->20         started        22 RegSvcs.exe 15 2 8->22         started        25 schtasks.exe 1 8->25         started        83 Multi AV Scanner detection for dropped file 12->83 27 RegSvcs.exe 12->27         started        29 schtasks.exe 12->29         started        57 127.0.0.1 unknown unknown 14->57 file6 signatures7 process8 dnsIp9 59 Loading BitLocker PowerShell Module 17->59 31 conhost.exe 17->31         started        33 WmiPrvSE.exe 17->33         started        35 conhost.exe 20->35         started        53 checkip.dyndns.com 193.122.130.0, 49686, 49690, 80 ORACLE-BMC-31898US United States 22->53 55 reallyfreegeoip.org 104.21.96.1, 443, 49687, 49694 CLOUDFLARENETUS United States 22->55 37 conhost.exe 25->37         started        61 Tries to steal Mail credentials (via file / registry access) 27->61 63 Tries to harvest and steal browser information (history, passwords, etc) 27->63 39 conhost.exe 29->39         started        signatures10 process11
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d/
Threat name:
ByteCode-MSIL.Backdoor.FormBook
Create hunting rule
Status:
Malicious
First seen:
2025-06-10 06:24:15 UTC
File Type:
PE (.Net Exe)
Extracted files:
10
AV detection:
25 of 36 (69.44%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xcscd4wf5pz7lydbvlv2x6cvvf55jc7xchet3q3yd5k4gerbauwq._file
Verdict:
malicious
Label(s):
unc_loader_037
Create hunting rule
novastealer
Create hunting rule
Similar samples:
6781be8abda50b0cc7d27b9466f7b39572f978cf16151092554e7b4557f0ac06
MassLogger
779065a001ee3006e880df587c823741e372eeeddbb5725dd53cb35349c79d89
MassLogger
aba0672f82dcf1487d5b7b5647291ee0974e962018425dbc48ee10438fd6cf07
MassLogger
b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
MassLogger
error
MassLogger
f6a0ee3459a41918aedc9dc305eb06e8781da0e48bc44a8528913e038b482026
MassLogger
+ 1'060 additional samples on MalwareBazaar
Result
Malware family:
masslogger
Create hunting rule
Score:
  10/10
Tags:
family:masslogger collection discovery execution spyware stealer
Link:
https://tria.ge/reports/250616-nxl49ahj8v/
Behaviour
Scheduled Task/Job: Scheduled Task
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Looks up external IP address via web service
Checks computer location settings
Command and Scripting Interpreter: PowerShell
MassLogger
Masslogger family
Malware Config
C2 Extraction:
https://api.telegram.org/bot7563824860:AAFtKVuS_3vhoBCo_2roo9esjdYoN9KIREg/sendMessage?chat_id=7758782479
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/0a237b70-08fd-45b7-b4f0-804fc3a28899
Unpacked files
SH256 hash:
b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
MD5 hash:
e57604e427a13b66da01563f36bc14ad
SHA1 hash:
10b3417828842531cae1156ef3ea801a2e8d16f1
Link:
https://www.unpac.me/results/3c6c2a46-6674-461b-a5c7-b3eac7b3f512/
SH256 hash:
835e84db0834c6cdc44e0fd51c420bba029c6f4cc2d4dec8b0ee69c524774041
MD5 hash:
f8a508751a78b5aabf5c03c01403a56a
SHA1 hash:
b3857d3152ef41d6e99dcca7eedb39adf3e28ce2
Detections:
SUSP_OBF_NET_Reactor_Indicators_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/3c6c2a46-6674-461b-a5c7-b3eac7b3f512/
Parent samples :
7bb5c9e35f9f5810040621ea28a76b70dad305aab4b3ab4aa601c50f5454a8cf
59cb54570d5d67d0dc406d25b3fb2413663e11eab1034ac83d3924e93205e33a
24755146beab096fd27442460942e816751b280a7fbc953fa949f1e53b30217b
5da01327848b8f3e9c7ab596c1241fd7148ff8917d2462334834916849193791
f6a0ee3459a41918aedc9dc305eb06e8781da0e48bc44a8528913e038b482026
b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
e354f2ec41ae4b915c485b252c4cee303d5f7c0badd07fd7dba48f9fe9b3367e
SH256 hash:
038ad66469d3551816eeebb2a36e42f2aa7653ce735865404aa770df2a16fb61
MD5 hash:
9921c47dd7625280a50009f6f486e0a6
SHA1 hash:
d6bfb6854be5324fc46bc2af378b08aad7221228
Detections:
win_404keylogger_g1
Create hunting rule
win_masslogger_w0
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/3c6c2a46-6674-461b-a5c7-b3eac7b3f512/
Parent samples :
8a2d28a73e4d553742d812c1248ea4612e84d1c1c8a1c8e036ffbeef2c1f3625
779065a001ee3006e880df587c823741e372eeeddbb5725dd53cb35349c79d89
b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d
SH256 hash:
e860c57819249e10d4e324ac65eb017dc3f7fb62fefd6790fec0543fe149c0e9
MD5 hash:
d9031bda4014624952785e54529969c6
SHA1 hash:
e19677808ee69814575e59e821a739671c06a667
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/3c6c2a46-6674-461b-a5c7-b3eac7b3f512/
Malware family:
PrivateLogger
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b8a421f2c5eb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d

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:NETexecutableMicrosoft
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 b8a421f2c5ebf3f5e061aaebabf855a97bd48bf711c93dc3781f55c31221052d

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/9598/

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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