masslogger | f1e4fd001ddab683c7aa0e2b032e32c880fc74217d28a8f05888b9c56cf01e06

Analysis

max time kernel
51s
max time network
132s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 01:52

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General

Target

QUOTATION.exe
Size

864KB
MD5

c2b1fcf142b7b221817ace1073ba58ae
SHA1

e8952c01300ae5a7ca6cc2e24807a6c12aa556ce
SHA256

6d23e4cb2a7704f3ebeaf44893bb9c1df101f0f03d522ceb51a0e1cfc7f8e8ec
SHA512

6c82b754c8e4c2df128f5f562867d59cfabe1feb24a8adc2ec1db3a6c545ed59de18f8804689bf0ef4f81abf3e169ac937fdaaf66b2daaaa32d96772cd5ec3b9

Score

10^/10

masslogger collection coreentity ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.3.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 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 4:48:19 AM MassLogger Started: 5/21/2022 4:48:06 AM Interval: 2 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe As Administrator: True

Extracted

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
[email protected]
Password:
biggod1234@

Signatures

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1672-56-0x0000000000390000-0x0000000000398000-memory.dmp	coreentity

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

CoreCCC Packer 1 IoCs

Detects CoreCCC packer used to load .NET malware.

Processes:

resource	yara_rule
behavioral1/memory/1672-54-0x00000000003A0000-0x000000000047E000-memory.dmp	coreccc

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1672-57-0x0000000004F40000-0x0000000004FEE000-memory.dmp	rezer0

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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

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

Processes:

QUOTATION.exe

description pid process target process

PID 1672 set thread context of 1412 1672 QUOTATION.exe MSBuild.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1752 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

MSBuild.exe

pid process

1412 MSBuild.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

MSBuild.exe

pid process

1412 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 1412 MSBuild.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MSBuild.exe

pid process

1412 MSBuild.exe

flow	ioc
3	api.ipify.org

description	pid	process	target process
PID 1672 set thread context of 1412	1672	QUOTATION.exe	MSBuild.exe

pid	process
1752	schtasks.exe

pid	process
1412	MSBuild.exe

pid	process
1412	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	1412	MSBuild.exe

pid	process
1412	MSBuild.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

QUOTATION.exe

description	pid	process	target process
PID 1672 wrote to memory of 1752	1672	QUOTATION.exe	schtasks.exe
PID 1672 wrote to memory of 1752	1672	QUOTATION.exe	schtasks.exe
PID 1672 wrote to memory of 1752	1672	QUOTATION.exe	schtasks.exe
PID 1672 wrote to memory of 1752	1672	QUOTATION.exe	schtasks.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe
PID 1672 wrote to memory of 1412	1672	QUOTATION.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe
"C:\Users\Admin\AppData\Local\Temp\QUOTATION.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1672
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\RGyOmdC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFEBA.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1752
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - outlook_office_path
  - outlook_win_path
  PID:1412

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFEBA.tmp

Filesize
1KB

MD5
0f0b50e962fc3c57ce1d1af0ca015105

SHA1
6bc884707abbb21ac6e99f8345f711356769542b

SHA256
26e205c4649158cba5b87e5fb79e9f8e6fc3054f0cc1a4076690c71757d8e24b

SHA512
59b11f91b30c615649344087a8ed9de63451c4106e5bbc9445a59d5f0efbf112f918466321c1b818edf9f816fa8353cfabd06c43bde8bb588de2fe8f1ae0a5f8

Download Submit
memory/1412-84-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-114-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-576-0x00000000006E0000-0x0000000000724000-memory.dmp

Filesize
272KB

Download
memory/1412-122-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-120-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-60-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-82-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-65-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-66-0x00000000004A21AE-mapping.dmp

Download
memory/1412-68-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-70-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-72-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-74-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-76-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-78-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-86-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-118-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-80-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-88-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-90-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-92-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-94-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-96-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-98-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-100-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-102-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-104-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-106-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-108-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-110-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-112-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1412-116-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1672-54-0x00000000003A0000-0x000000000047E000-memory.dmp

Filesize
888KB

Download
memory/1672-56-0x0000000000390000-0x0000000000398000-memory.dmp

Filesize
32KB

Download
memory/1672-55-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1672-57-0x0000000004F40000-0x0000000004FEE000-memory.dmp

Filesize
696KB

Download
memory/1752-58-0x0000000000000000-mapping.dmp

Download