masslogger | 4d202d4afe38b078d7aea0d9c1a89e2f0ec027e1555ce35328a293dcaef8bb25

Analysis

max time kernel
87s
max time network
117s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 12:03

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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 rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 12:57:36 PM MassLogger Started: 5/21/2022 12:57:26 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
behavioral1/memory/1272-61-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-62-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-63-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-64-0x00000000004AB83E-mapping.dmp	family_masslogger
behavioral1/memory/1272-66-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-68-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-70-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-72-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-74-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-76-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-78-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-80-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-82-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-84-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-86-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-88-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-90-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-92-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-94-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-96-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-98-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-100-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-102-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-104-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-106-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-108-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-110-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-112-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-114-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-116-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-118-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/1272-120-0x0000000000400000-0x00000000004B0000-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

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1672-57-0x0000000005000000-0x00000000050B8000-memory.dmp	rezer0

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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

4 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

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

description pid process target process

PID 1672 set thread context of 1272 1672 T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe MSBuild.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

MSBuild.exe

pid process

1272 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 1272 MSBuild.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1672 set thread context of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe

pid	process
1272	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1272	MSBuild.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

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

description	pid	process	target process
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	T.HALK BANKASI A._. 25.06.2020 Hesap Ekstresi.exe	MSBuild.exe
PID 1672 wrote to memory of 1272	1672	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-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\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:1672
- 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:1272

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1272-86-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-62-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-580-0x00000000021F0000-0x0000000002204000-memory.dmp

Filesize
80KB

Download
memory/1272-579-0x0000000002215000-0x0000000002226000-memory.dmp

Filesize
68KB

Download
memory/1272-58-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-90-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-61-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-88-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-63-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-64-0x00000000004AB83E-mapping.dmp

Download
memory/1272-66-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-68-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-70-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-72-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-74-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-76-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-78-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-80-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-82-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-84-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-577-0x00000000003C0000-0x0000000000404000-memory.dmp

Filesize
272KB

Download
memory/1272-120-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-59-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-92-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-94-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-96-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-98-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-100-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-102-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-104-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-106-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-108-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-110-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-112-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-114-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-116-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1272-118-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1672-55-0x0000000075B61000-0x0000000075B63000-memory.dmp

Filesize
8KB

Download
memory/1672-57-0x0000000005000000-0x00000000050B8000-memory.dmp

Filesize
736KB

Download
memory/1672-54-0x0000000001260000-0x000000000135A000-memory.dmp

Filesize
1000KB

Download
memory/1672-56-0x00000000004D0000-0x00000000004E0000-memory.dmp

Filesize
64KB

Download