masslogger | 5ef9e2b5300d9ffdd59ca9dda061e9f1555741ada91734ac323aaa3d09c55871

General

Target

PO__1003.exe
Size

1.0MB
MD5

47d10c95e38be0cfbd670a1b378c26a2
SHA1

ad33ec21b4d327c036f207e62c59e85258a57502
SHA256

34fd5c49f828705b2f744802f7f11c4fea6715817906c331e6052d09bedf62fa
SHA512

094345c9b41e3516248cf507ec616b663615b73dd73a9b7253f69cc774aad5ccc268586de24f887c3924ac0ebbcc776f5e033d17a9975783439249f3c372afb7

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8236ADF044\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.7.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:54:33 PM MassLogger Started: 5/21/2022 2:54:26 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO__1003.exe MassLogger Melt: true 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 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2312-137-0x0000000000400000-0x00000000004A8000-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

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PO__1003.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	PO__1003.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs

collection

Email Collection

T1114

Processes:

PO__1003.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO__1003.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO__1003.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO__1003.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO__1003.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.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

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

Processes:

PO__1003.exe

description pid process target process

PID 4536 set thread context of 2312 4536 PO__1003.exe PO__1003.exe

flow	ioc
41	api.ipify.org

description	pid	process	target process
PID 4536 set thread context of 2312	4536	PO__1003.exe	PO__1003.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

PO__1003.exePO__1003.exepowershell.exe

pid	process
4536	PO__1003.exe
4536	PO__1003.exe
4536	PO__1003.exe
4536	PO__1003.exe
4536	PO__1003.exe
4536	PO__1003.exe
4536	PO__1003.exe
2312	PO__1003.exe
2260	powershell.exe
2260	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

PO__1003.exePO__1003.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4536 PO__1003.exe
Token: SeDebugPrivilege 2312 PO__1003.exe
Token: SeDebugPrivilege 2260 powershell.exe

description	pid	process
Token: SeDebugPrivilege	4536	PO__1003.exe
Token: SeDebugPrivilege	2312	PO__1003.exe
Token: SeDebugPrivilege	2260	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

PO__1003.exePO__1003.execmd.exe

description	pid	process	target process
PID 4536 wrote to memory of 5024	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 5024	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 5024	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 1376	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 1376	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 1376	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 4536 wrote to memory of 2312	4536	PO__1003.exe	PO__1003.exe
PID 2312 wrote to memory of 2384	2312	PO__1003.exe	cmd.exe
PID 2312 wrote to memory of 2384	2312	PO__1003.exe	cmd.exe
PID 2312 wrote to memory of 2384	2312	PO__1003.exe	cmd.exe
PID 2384 wrote to memory of 2260	2384	cmd.exe	powershell.exe
PID 2384 wrote to memory of 2260	2384	cmd.exe	powershell.exe
PID 2384 wrote to memory of 2260	2384	cmd.exe	powershell.exe

outlook_office_path 1 IoCs

Processes:

PO__1003.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe

outlook_win_path 1 IoCs

Processes:

PO__1003.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO__1003.exe

C:\Users\Admin\AppData\Local\Temp\PO__1003.exe
"C:\Users\Admin\AppData\Local\Temp\PO__1003.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Users\Admin\AppData\Local\Temp\PO__1003.exe
  "{path}"
  2⤵
  PID:5024
- C:\Users\Admin\AppData\Local\Temp\PO__1003.exe
  "{path}"
  2⤵
  PID:1376
- C:\Users\Admin\AppData\Local\Temp\PO__1003.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  - outlook_office_path
  - outlook_win_path
  PID:2312
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\PO__1003.exe' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2384
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\PO__1003.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2260

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PO__1003.exe.log

Filesize
507B

MD5
8cf94b5356be60247d331660005941ec

SHA1
fdedb361f40f22cb6a086c808fc0056d4e421131

SHA256
52a5b2d36f2b72cb02c695cf7ef46444dda73d4ea82a73e0894c805fa9987bc0

SHA512
b886dfc8bf03f8627f051fb6e2ac40ae2e7713584695a365728eb2e2c87217830029aa35bd129c642fa03dde3f7a7dd5690b16248676be60a6bb5f497fb23651

Download Submit
memory/1376-135-0x0000000000000000-mapping.dmp

Download
memory/2260-145-0x0000000004F90000-0x00000000055B8000-memory.dmp

Filesize
6.2MB

Download
memory/2260-148-0x0000000005DA0000-0x0000000005DBE000-memory.dmp

Filesize
120KB

Download
memory/2260-152-0x00000000063C0000-0x00000000063E2000-memory.dmp

Filesize
136KB

Download
memory/2260-151-0x0000000007040000-0x00000000070D6000-memory.dmp

Filesize
600KB

Download
memory/2260-150-0x00000000062F0000-0x000000000630A000-memory.dmp

Filesize
104KB

Download
memory/2260-149-0x0000000007620000-0x0000000007C9A000-memory.dmp

Filesize
6.5MB

Download
memory/2260-147-0x0000000005730000-0x0000000005796000-memory.dmp

Filesize
408KB

Download
memory/2260-146-0x0000000004F30000-0x0000000004F52000-memory.dmp

Filesize
136KB

Download
memory/2260-144-0x0000000004870000-0x00000000048A6000-memory.dmp

Filesize
216KB

Download
memory/2260-143-0x0000000000000000-mapping.dmp

Download
memory/2312-141-0x0000000006AA0000-0x0000000006AF0000-memory.dmp

Filesize
320KB

Download
memory/2312-140-0x0000000006680000-0x000000000668A000-memory.dmp

Filesize
40KB

Download
memory/2312-139-0x0000000005170000-0x00000000051D6000-memory.dmp

Filesize
408KB

Download
memory/2312-137-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2312-136-0x0000000000000000-mapping.dmp

Download
memory/2384-142-0x0000000000000000-mapping.dmp

Download
memory/4536-130-0x0000000000010000-0x000000000011A000-memory.dmp

Filesize
1.0MB

Download
memory/4536-131-0x000000000A960000-0x000000000AF04000-memory.dmp

Filesize
5.6MB

Download
memory/4536-133-0x000000000A5D0000-0x000000000A66C000-memory.dmp

Filesize
624KB

Download
memory/4536-132-0x000000000A490000-0x000000000A522000-memory.dmp

Filesize
584KB

Download
memory/5024-134-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads