MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413. 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 6 File information Comments
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SHA256 hash: 4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413
SHA3-384 hash: 1bb9221be426c9c216b1f0e8e864d5a2955b816384ddff6479e355566e7f27795d2a25beb1e89361c17d7fe33802022d
SHA1 hash: b901fa31a8ad6b5d993ac473775af5eb54f16847
MD5 hash: a9ce0c9c8c1186a1ba853f3d042d6c64
humanhash: potato-mississippi-comet-mountain
File name:CUST543324_invoice.pdf.scr
Download: download sample
Signature MassLogger
Create hunting rule
File size:876'040 bytes
First seen:2025-02-18 14:17:31 UTC
Last seen:2025-02-18 15:21:12 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger)
ssdeep 12288:Sq15gMXJhvjiEdT+ahbNvHiysPY+1t+f0OBIxN4Kuw+3L6tdEkR:SqLFZHdbhH4t+c4IN453LY
Threatray 2'715 similar samples on MalwareBazaar
TLSH T16215E0D03B327315DEA96A34D569DEB692B51E68B000BAE716DC7F8735CD221AE0CF01
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 8e8e8e9696969696 (7 x Formbook, 2 x SnakeKeylogger, 2 x VIPKeylogger)
Reporter lowmal3
Tags:exe MassLogger

Intelligence

File Origin
# of uploads :
2
# of downloads :
472
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
CUST543324_invoice.pdf.scr
Verdict:
Malicious activity
Analysis date:
2025-02-18 14:18:53 UTC
Tags:
evasion snake keylogger netreactor stealer
Link:
https://app.any.run/tasks/37f57fa3-a855-4621-a894-727b801debb7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.3184.7064.14369.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
97.4%
Link:
https://cyber-fortress.com/docs/result/index.php?id=67b497c528ab76d43a5ba22e
Tags:
underscore dropper virus msil
Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a process with a hidden window
Adding an exclusion to Microsoft Defender
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
invalid-signature keylogger masquerade obfuscated obfuscated packed packed packer_detected signed
Link:
https://www.filescan.io/uploads/67b496a8991985e0a95b3b0f/reports/1da14215-079a-452e-bf95-ab0897ae0022/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413
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.
Malware family:
Snake Keylogger
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/63d75fd5-bfd2-4ed9-bb7f-60e305f37500
Result
Threat name:
MassLogger RAT
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1617827
Signature
Adds a directory exclusion to Windows Defender
Contains functionality to log keystrokes (.Net Source)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Installs new ROOT certificates
Joe Sandbox ML detected suspicious sample
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 an obfuscated file name to hide its real file extension (double extension)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected MassLogger RAT
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1617827 Sample: CUST543324_invoice.pdf.scr Startdate: 18/02/2025 Architecture: WINDOWS Score: 100 51 Malicious sample detected (through community Yara rule) 2->51 53 Sigma detected: Scheduled temp file as task from temp location 2->53 55 Multi AV Scanner detection for submitted file 2->55 57 8 other signatures 2->57 7 CUST543324_invoice.pdf.scr 1 11 2->7         started        11 taskeng.exe 1 2->11         started        process3 file4 33 C:\Users\user\AppData\...\QNIQQhjIwwLB.exe, PE32 7->33 dropped 35 C:\Users\...\QNIQQhjIwwLB.exe:Zone.Identifier, ASCII 7->35 dropped 37 C:\Users\user\AppData\Local\...\tmpA786.tmp, XML 7->37 dropped 59 Uses schtasks.exe or at.exe to add and modify task schedules 7->59 61 Adds a directory exclusion to Windows Defender 7->61 63 Injects a PE file into a foreign processes 7->63 13 CUST543324_invoice.pdf.scr 12 2 7->13         started        17 powershell.exe 4 7->17         started        19 schtasks.exe 7->19         started        21 CUST543324_invoice.pdf.scr 7->21         started        23 QNIQQhjIwwLB.exe 4 11->23         started        signatures5 process6 dnsIp7 45 checkip.dyndns.com 193.122.130.0, 49164, 80 ORACLE-BMC-31898US United States 13->45 47 reallyfreegeoip.org 104.21.64.1, 443, 49165 CLOUDFLARENETUS United States 13->47 49 checkip.dyndns.org 13->49 71 Installs new ROOT certificates 13->71 73 Tries to steal Mail credentials (via file / registry access) 13->73 75 Multi AV Scanner detection for dropped file 23->75 77 Adds a directory exclusion to Windows Defender 23->77 79 Injects a PE file into a foreign processes 23->79 25 QNIQQhjIwwLB.exe 23->25         started        29 powershell.exe 4 23->29         started        31 schtasks.exe 23->31         started        signatures8 process9 dnsIp10 39 reallyfreegeoip.org 25->39 41 158.101.44.242, 49166, 80 ORACLE-BMC-31898US United States 25->41 43 3 other IPs or domains 25->43 65 Tries to steal Mail credentials (via file / registry access) 25->65 67 Tries to harvest and steal browser information (history, passwords, etc) 25->67 signatures11 69 Tries to detect the country of the analysis system (by using the IP) 39->69
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2025-02-18 03:58:41 UTC
File Type:
PE (.Net Exe)
Extracted files:
23
AV detection:
18 of 37 (48.65%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jn5znkljmayiizlk3vncgjqwczusrianrard6uuz33cvga7bwqjq._file
Verdict:
malicious
Label(s):
unknown_loader_037
Create hunting rule
captiveaaloader
Create hunting rule
novastealer
Create hunting rule
Similar samples:
0f5ddd1e5c66b90c7a37c276228ef498be1297d5cf3823afd72b0ad08b08987a
MassLogger
45e3b1735df7c76cac0c02dab2bd084220687e4d9786ea6a32e8bca70dc1a4cd
MassLogger
4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413
MassLogger
aac33041fefe8ce37a64b94c622ee3c8c5c3e19018f09df1421f8b7f4e5bffc6
MassLogger
df87753fe343afeb8e28ea947a446927be665c1ea7274e8e90c348257ce7ac57
MassLogger
e837ceba66fc5d8b5608f452f95a8133321292884a418993533d85c6abec48d4
MassLogger
error
MassLogger
+ 2'705 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
collection discovery execution spyware stealer
Link:
https://tria.ge/reports/250218-rmbgjs1ng1/
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
Reads user/profile data of local email clients
Reads user/profile data of web browsers
Command and Scripting Interpreter: PowerShell
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/c810c2a2-22e3-4d27-a7d0-fba04a53999b
Unpacked files
SH256 hash:
4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413
MD5 hash:
a9ce0c9c8c1186a1ba853f3d042d6c64
SHA1 hash:
b901fa31a8ad6b5d993ac473775af5eb54f16847
Link:
https://www.unpac.me/results/6872e706-7535-4f7f-9ffd-d21f51802051/
SH256 hash:
a99a40786f911df43c43fda821cfbfa6b77ca8682e38fe74cade2ee95ee22eff
MD5 hash:
7fc008191742dcee48216629b48dcdc7
SHA1 hash:
1dfb0b5188bfb3e86e482c0f423697cb2a903ad8
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/6872e706-7535-4f7f-9ffd-d21f51802051/
SH256 hash:
4f4e257e588e4242d58ff4d0fe7af1ea637dc568ff04ab22aa6b4603244343e2
MD5 hash:
b098f820c1a3589d3ca4054cfa364f9e
SHA1 hash:
43a8c5f9503004ced5f0968781d82efd5a8c5eab
Detections:
SUSP_OBF_NET_ConfuserEx_Name_Pattern_Jan24
Create hunting rule
Link:
https://www.unpac.me/results/6872e706-7535-4f7f-9ffd-d21f51802051/
SH256 hash:
48be0bea6d6beb657a4218591530b7e563d211645f8bc671282be03837365eb1
MD5 hash:
3dd886e6d02b9610fdfb1c7361b71c1c
SHA1 hash:
ab4256e042eca5a670e4f1d2b6d3e8d78466bffd
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/6872e706-7535-4f7f-9ffd-d21f51802051/
Parent samples :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 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/4b7b96a969603084656add5a232616166928a00d88223f5299dec55303e1b413

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.

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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