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
133s
max time network
135s
platform
windows10-1703_x64
resource
win10-20240404-en
resource tags

arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-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

behavioral23/memory/1420-15-0x0000000000400000-0x00000000004A8000-memory.dmp family_masslogger
ReZer0 packer 1 IoCs
Detects ReZer0, a packer with multiple versions used in various campaigns.
rezer0

Processes:

resource yara_rule

behavioral23/memory/2888-11-0x0000000007470000-0x000000000751E000-memory.dmp rezer0
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:

mouse_2.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\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

resource	yara_rule
behavioral23/memory/1420-15-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger

resource	yara_rule
behavioral23/memory/2888-11-0x0000000007470000-0x000000000751E000-memory.dmp	rezer0

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Control Panel\International\Geo\Nation	mouse_2.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

mouse_2.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	mouse_2.exe
Key opened	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	mouse_2.exe
Key opened	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	mouse_2.exe
Key created	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	mouse_2.exe
Key queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	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

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

Processes:

mouse_2.exe

description pid process target process

PID 2888 set thread context of 1420 2888 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

4436 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

mouse_2.exe

pid process

1420 mouse_2.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

mouse_2.exemouse_2.exe

pid process

2888 mouse_2.exe
2888 mouse_2.exe
2888 mouse_2.exe
1420 mouse_2.exe
1420 mouse_2.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

mouse_2.exemouse_2.exe

description pid process

Token: SeDebugPrivilege 2888 mouse_2.exe
Token: SeDebugPrivilege 1420 mouse_2.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

mouse_2.exe

pid process

1420 mouse_2.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 2888 set thread context of 1420	2888	mouse_2.exe	mouse_2.exe

pid	process
4436	schtasks.exe

pid	process
1420	mouse_2.exe

pid	process
2888	mouse_2.exe
2888	mouse_2.exe
2888	mouse_2.exe
1420	mouse_2.exe
1420	mouse_2.exe

description	pid	process
Token: SeDebugPrivilege	2888	mouse_2.exe
Token: SeDebugPrivilege	1420	mouse_2.exe

pid	process
1420	mouse_2.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

mouse_2.exe

description	pid	process	target process
PID 2888 wrote to memory of 4436	2888	mouse_2.exe	schtasks.exe
PID 2888 wrote to memory of 4436	2888	mouse_2.exe	schtasks.exe
PID 2888 wrote to memory of 4436	2888	mouse_2.exe	schtasks.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe
PID 2888 wrote to memory of 1420	2888	mouse_2.exe	mouse_2.exe

outlook_office_path 1 IoCs

Processes:

mouse_2.exe

description ioc process

Key queried \REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 mouse_2.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\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-1-5-21-4106386276-4127174233-3637007343-1000\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⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2888

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\aqkfZm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7F2E.tmp"
2⤵
- Creates scheduled task(s)
PID:4436

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:1420

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\mouse_2.exe.log
Filesize
1KB

MD5
b4f7a6a57cb46d94b72410eb6a6d45a9

SHA1
69f3596ffa027202d391444b769ceea0ae14c5f7

SHA256
23994ebe221a48ea16ebad51ae0d4b47ccd415ae10581f9405e588d4f6c2523b

SHA512
be6da516e54c3a5b33ac2603137a2f8cf8445ff5961dd266faedf3627bae8979953d7ef305538df0151c609917a5b99bf5d023bdd32de50fd5c723950f90db5c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7F2E.tmp
Filesize
1KB

MD5
ce5bab798e43a938723a716fcd6021a5

SHA1
06c3ef2d58e7ce95c4517d6c7b87e135e42ae6f9

SHA256
4c077d5e55a7d8639225b4a92c2ca62f8663302afd563b17813ec25aefeb4e3f

SHA512
856f84011de8ed3db493111548e8bc5d6e02903313846c4d74ab13a7bf5a56a0e35828b1a71b9a5edfc1a29c87ced15dfc3cec5c9ba763977811303d368735d9

Download Submit
memory/1420-44-0x0000000073050000-0x000000007373E000-memory.dmp

Filesize
6.9MB

Download
memory/1420-33-0x0000000007FB0000-0x0000000008000000-memory.dmp

Filesize
320KB

Download
memory/1420-22-0x00000000056D0000-0x0000000005736000-memory.dmp

Filesize
408KB

Download
memory/1420-21-0x0000000073050000-0x000000007373E000-memory.dmp

Filesize
6.9MB

Download
memory/1420-20-0x0000000073050000-0x000000007373E000-memory.dmp

Filesize
6.9MB

Download
memory/1420-18-0x0000000005520000-0x0000000005564000-memory.dmp

Filesize
272KB

Download
memory/1420-15-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/2888-3-0x000000000B4D0000-0x000000000B9CE000-memory.dmp

Filesize
5.0MB

Download
memory/2888-10-0x00000000072D0000-0x000000000736C000-memory.dmp

Filesize
624KB

Download
memory/2888-11-0x0000000007470000-0x000000000751E000-memory.dmp

Filesize
696KB

Download
memory/2888-9-0x0000000073050000-0x000000007373E000-memory.dmp

Filesize
6.9MB

Download
memory/2888-8-0x000000007305E000-0x000000007305F000-memory.dmp

Filesize
4KB

Download
memory/2888-19-0x0000000073050000-0x000000007373E000-memory.dmp

Filesize
6.9MB

Download
memory/2888-7-0x0000000005E30000-0x0000000005E38000-memory.dmp

Filesize
32KB

Download
memory/2888-6-0x0000000005AA0000-0x0000000005AAA000-memory.dmp

Filesize
40KB

Download
memory/2888-0-0x000000007305E000-0x000000007305F000-memory.dmp

Filesize
4KB

Download
memory/2888-5-0x0000000073050000-0x000000007373E000-memory.dmp

Filesize
6.9MB

Download
memory/2888-4-0x000000000B1B0000-0x000000000B242000-memory.dmp

Filesize
584KB

Download
memory/2888-2-0x0000000007D10000-0x0000000007DD0000-memory.dmp

Filesize
768KB

Download
memory/2888-1-0x0000000000FA0000-0x000000000109C000-memory.dmp

Filesize
1008KB

Download