masslogger | 60b290310f67adb0ae186b4b938ca466a6b55653b2519261fa425127f5500a1f

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09-06-2024 17:07

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General

Target

Stealers/Masslogger/mouse_2.exe
Size

984KB
MD5

af8ab92992ccc4cc6a637953836edf93
SHA1

ac17c77cae31fdfeb618b0083285ba869baf29fc
SHA256

03968a3a5a7a880feefca31686fcfbed445080a0c06eda2b6d623757179b782c
SHA512

9dc3bdfe45f9333d62ef3b0aaf3860a9ef1e94ced02ed0437d3ac2f96b3b9aacf6e621703f13d62f356bd50dec84cc3a3dc787a8a14c9ce0ceeed9ff63c45ad2
SSDEEP

24576:iNg+tKkEYA7Gmvv/HGsvPw9vz/DrELE7VUH:0g4K7YA7vvRMbcLa

Score

10^/10

masslogger collection rezer0 spyware stealer

Malware Config

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
behavioral24/memory/4392-16-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral24/memory/1768-11-0x0000000005D60000-0x0000000005E0E000-memory.dmp	rezer0

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

mouse_2.exemouse_2.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	mouse_2.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	mouse_2.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
T1552.001

Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs

collection

Email Collection

T1114

Processes:

mouse_2.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	mouse_2.exe
Key opened	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.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

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

Processes:

mouse_2.exe

description pid process target process

PID 1768 set thread context of 4392 1768 mouse_2.exe mouse_2.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

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/Job
T1053

Processes:

schtasks.exe

pid process

2716 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

mouse_2.exe

pid process

4392 mouse_2.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

mouse_2.exemouse_2.exe

pid process

1768 mouse_2.exe
1768 mouse_2.exe
1768 mouse_2.exe
4392 mouse_2.exe
4392 mouse_2.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

mouse_2.exemouse_2.exe

description pid process

Token: SeDebugPrivilege 1768 mouse_2.exe
Token: SeDebugPrivilege 4392 mouse_2.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

mouse_2.exe

pid process

4392 mouse_2.exe

flow	ioc
32	api.ipify.org

description	pid	process	target process
PID 1768 set thread context of 4392	1768	mouse_2.exe	mouse_2.exe

pid	process
2716	schtasks.exe

pid	process
4392	mouse_2.exe

pid	process
1768	mouse_2.exe
1768	mouse_2.exe
1768	mouse_2.exe
4392	mouse_2.exe
4392	mouse_2.exe

description	pid	process
Token: SeDebugPrivilege	1768	mouse_2.exe
Token: SeDebugPrivilege	4392	mouse_2.exe

pid	process
4392	mouse_2.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

mouse_2.exe

description	pid	process	target process
PID 1768 wrote to memory of 2716	1768	mouse_2.exe	schtasks.exe
PID 1768 wrote to memory of 2716	1768	mouse_2.exe	schtasks.exe
PID 1768 wrote to memory of 2716	1768	mouse_2.exe	schtasks.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe
PID 1768 wrote to memory of 4392	1768	mouse_2.exe	mouse_2.exe

outlook_office_path 1 IoCs

Processes:

mouse_2.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe

outlook_win_path 1 IoCs

Processes:

mouse_2.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe

C:\Users\Admin\AppData\Local\Temp\Stealers\Masslogger\mouse_2.exe
"C:\Users\Admin\AppData\Local\Temp\Stealers\Masslogger\mouse_2.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1768
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aqkfZm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7421.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2716
- C:\Users\Admin\AppData\Local\Temp\Stealers\Masslogger\mouse_2.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - 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:4392

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp7421.tmp

Filesize
1KB

MD5
2053bc37c3c7be4c8e71ebb1da860d86

SHA1
9e910f7bea692ea47fc1af100165d946a6fbb430

SHA256
ffd2a1810935608fe4e16e7f5d0f5204ccf1d2e9ddf10cd9e40ee2844b1355ec

SHA512
cf0839f74a5ea730f3726a79d2598377bf3aa221b53343eaabfee8ad104dd574e587231f9e3bd345789f5b374706e31ca77a96d7100032a4435793d9d5bd10c7

Download Submit
memory/1768-10-0x0000000004EE0000-0x0000000004F7C000-memory.dmp

Filesize
624KB

Download
memory/1768-3-0x000000000AB10000-0x000000000B0B4000-memory.dmp

Filesize
5.6MB

Download
memory/1768-1-0x0000000000340000-0x000000000043C000-memory.dmp

Filesize
1008KB

Download
memory/1768-4-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/1768-5-0x000000000A700000-0x000000000A792000-memory.dmp

Filesize
584KB

Download
memory/1768-6-0x0000000005140000-0x000000000514A000-memory.dmp

Filesize
40KB

Download
memory/1768-7-0x0000000005BD0000-0x0000000005BD8000-memory.dmp

Filesize
32KB

Download
memory/1768-8-0x000000007512E000-0x000000007512F000-memory.dmp

Filesize
4KB

Download
memory/1768-11-0x0000000005D60000-0x0000000005E0E000-memory.dmp

Filesize
696KB

Download
memory/1768-0-0x000000007512E000-0x000000007512F000-memory.dmp

Filesize
4KB

Download
memory/1768-20-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/1768-2-0x0000000004D60000-0x0000000004E20000-memory.dmp

Filesize
768KB

Download
memory/1768-9-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-46-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-21-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-19-0x00000000050D0000-0x0000000005114000-memory.dmp

Filesize
272KB

Download
memory/4392-18-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-22-0x0000000005290000-0x00000000052F6000-memory.dmp

Filesize
408KB

Download
memory/4392-23-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-34-0x0000000007B50000-0x0000000007BA0000-memory.dmp

Filesize
320KB

Download
memory/4392-35-0x0000000075120000-0x00000000758D0000-memory.dmp

Filesize
7.7MB

Download
memory/4392-16-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download