masslogger | 4d202d4afe38b078d7aea0d9c1a89e2f0ec027e1555ce35328a293dcaef8bb25

General

Target

T.HALK BANKASI A.?. 25.06.2020 Hesap Ekstresi.exe
Size

975KB
MD5

c9a52acd2cb5a21a32cdeee85201d66d
SHA1

5be53cb72024fac27e027857c09ad79c4a7124a0
SHA256

c60b9f94ebece1e217b2724d77bd929dd208466813954315cb588887c6a21480
SHA512

233ca6cdf1a4cf2a74a9a4c6496859bbcb8ed957a0fa2c99107f3a4cd775fffa2ab429c85d79cc66176a99014865b672faeb6273ffcdf52cdf46f47a14553224

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\EEB932C954\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 Location: United States OS: Microsoft Windows 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:58:21 PM MassLogger Started: 5/21/2022 2:58:11 PM Interval: 1 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 32 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4648-136-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-138-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-140-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-142-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-144-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-146-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-148-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-150-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-152-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-154-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-156-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-158-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-160-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-162-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-164-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-166-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-168-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-170-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-172-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-174-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-176-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-178-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-180-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-182-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-184-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-186-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-188-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-190-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-192-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-194-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-196-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral2/memory/4648-198-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe

Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

2 api.ipify.org

flow	ioc
2	api.ipify.org

Drops file in System32 directory 2 IoCs

Processes:

svchost.exe

description	ioc	process
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{88250955-5CCF-48E4-AEF2-5C0FECB716F7}.catalogItem	svchost.exe
File created	C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{94D9DEF5-C74B-48B4-AE6D-35BBE2B998DE}.catalogItem	svchost.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe

description pid process target process

PID 4120 set thread context of 4648 4120 T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe MSBuild.exe

description	pid	process	target process
PID 4120 set thread context of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

svchost.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	svchost.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

MSBuild.exe

pid process

4648 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 4648 MSBuild.exe

pid	process
4648	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	4648	MSBuild.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe

description	pid	process	target process
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 4120 wrote to memory of 4648	4120	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe
"C:\Users\Admin\AppData\Local\Temp\T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4120

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"{path}"
2⤵
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:4648

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k netsvcs -p
1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:5048

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/4120-130-0x0000000000D40000-0x0000000000E3A000-memory.dmp

Filesize
1000KB

Download
memory/4120-131-0x0000000005CE0000-0x0000000006284000-memory.dmp

Filesize
5.6MB

Download
memory/4120-132-0x00000000057E0000-0x0000000005872000-memory.dmp

Filesize
584KB

Download
memory/4120-133-0x00000000059A0000-0x00000000059AA000-memory.dmp

Filesize
40KB

Download
memory/4120-134-0x0000000005A50000-0x0000000005AEC000-memory.dmp

Filesize
624KB

Download
memory/4648-135-0x0000000000000000-mapping.dmp

Download
memory/4648-136-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-138-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-140-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-142-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-144-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-146-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-148-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-150-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-152-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-154-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-156-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-158-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-160-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-162-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-164-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-166-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-168-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-170-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-172-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-174-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-176-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-178-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-180-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-182-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-184-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-186-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-188-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-190-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-192-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-194-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-196-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-198-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4648-645-0x0000000005240000-0x00000000052A6000-memory.dmp

Filesize
408KB

Download
memory/4648-646-0x0000000006900000-0x0000000006950000-memory.dmp

Filesize
320KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads