masslogger | 60b290310f67adb0ae186b4b938ca466a6b55653b2519261fa425127f5500a1f

Resubmissions

21-06-2024 19:37

240621-yca7cszgnd 10

09-06-2024 17:07

13-05-2024 17:36

12-05-2024 17:17

12-05-2024 16:15

10-05-2024 18:05

10-05-2024 17:48

Analysis

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

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

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

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 Matrix ATT&CK v13

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