masslogger | 20f95b1751f2d7a5ecd7f8eb968cc5decb339f8fbc49c9515278ebfedd1ad159

Analysis

max time kernel
150s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
24-05-2024 10:58

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General

Target

6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe
Size

1.1MB
MD5

6e457e014242287aa8649c939dc3bae0
SHA1

2492dbc016d47b2bd5b6889b101d2061cd953cc8
SHA256

20f95b1751f2d7a5ecd7f8eb968cc5decb339f8fbc49c9515278ebfedd1ad159
SHA512

8166c207e72da75a87b52e15ccd18cd827ec4d5623414866a605c2129ef473c78829170c999b8017f81995bcf4a5a8833da89b720921ab71a1d4b5c6242700ef
SSDEEP

24576:iFBrny7d7eqq2Z32pi/ZHnJuPjz+l63c2:i4kV2h2pi/zyKej

Score

10^/10

masslogger collection spyware stealer upx

Malware Config

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2600-30-0x0000000000400000-0x0000000000541000-memory.dmp	family_masslogger
behavioral1/memory/2600-32-0x0000000000400000-0x0000000000541000-memory.dmp	family_masslogger
behavioral1/memory/2600-31-0x0000000001E00000-0x0000000001E9A000-memory.dmp	family_masslogger
behavioral1/memory/2600-55-0x0000000000400000-0x0000000000541000-memory.dmp	family_masslogger

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:

bjsbjsf.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\International\Geo\Nation bjsbjsf.exe
Drops startup file 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win.vbs notepad.exe
Executes dropped EXE 3 IoCs

Processes:

bjsbjsf.exebjsbjsf.exebjsbjsf.exe

pid process

2712 bjsbjsf.exe
2600 bjsbjsf.exe
2664 bjsbjsf.exe
Loads dropped DLL 4 IoCs

Processes:

notepad.exebjsbjsf.exe

pid process

1628 notepad.exe
1628 notepad.exe
2712 bjsbjsf.exe
2712 bjsbjsf.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Control Panel\International\Geo\Nation	bjsbjsf.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win.vbs	notepad.exe

pid	process
2712	bjsbjsf.exe
2600	bjsbjsf.exe
2664	bjsbjsf.exe

pid	process
1628	notepad.exe
1628	notepad.exe
2712	bjsbjsf.exe
2712	bjsbjsf.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/2600-23-0x0000000000400000-0x0000000000541000-memory.dmp	upx
behavioral1/memory/2600-30-0x0000000000400000-0x0000000000541000-memory.dmp	upx
behavioral1/memory/2600-32-0x0000000000400000-0x0000000000541000-memory.dmp	upx
behavioral1/memory/2600-29-0x0000000000400000-0x0000000000541000-memory.dmp	upx

Accesses Microsoft Outlook profiles 1 TTPs 35 IoCs

collection

Email Collection

T1114

Processes:

bjsbjsf.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key created	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	bjsbjsf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe
Key opened	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.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:

bjsbjsf.exe

description pid process target process

PID 2712 set thread context of 2600 2712 bjsbjsf.exe bjsbjsf.exe
NTFS ADS 1 IoCs

Processes:

notepad.exe

description ioc process

File created C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe:ZoneIdentifier notepad.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

bjsbjsf.exe

pid process

2600 bjsbjsf.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 2712 set thread context of 2600	2712	bjsbjsf.exe	bjsbjsf.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe:ZoneIdentifier	notepad.exe

pid	process
2600	bjsbjsf.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exebjsbjsf.exebjsbjsf.exe

pid	process
1728	6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe
2712	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe
2664	bjsbjsf.exe

Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

bjsbjsf.exe

pid process

2712 bjsbjsf.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

bjsbjsf.exe

description pid process

Token: SeDebugPrivilege 2600 bjsbjsf.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

bjsbjsf.exe

pid process

2600 bjsbjsf.exe

pid	process
2712	bjsbjsf.exe

description	pid	process
Token: SeDebugPrivilege	2600	bjsbjsf.exe

pid	process
2600	bjsbjsf.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exenotepad.exebjsbjsf.exe

description	pid	process	target process
PID 1728 wrote to memory of 1628	1728	6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe	notepad.exe
PID 1728 wrote to memory of 1628	1728	6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe	notepad.exe
PID 1728 wrote to memory of 1628	1728	6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe	notepad.exe
PID 1728 wrote to memory of 1628	1728	6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe	notepad.exe
PID 1728 wrote to memory of 1628	1728	6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe	notepad.exe
PID 1728 wrote to memory of 1628	1728	6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe	notepad.exe
PID 1628 wrote to memory of 2712	1628	notepad.exe	bjsbjsf.exe
PID 1628 wrote to memory of 2712	1628	notepad.exe	bjsbjsf.exe
PID 1628 wrote to memory of 2712	1628	notepad.exe	bjsbjsf.exe
PID 1628 wrote to memory of 2712	1628	notepad.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2600	2712	bjsbjsf.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2600	2712	bjsbjsf.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2600	2712	bjsbjsf.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2600	2712	bjsbjsf.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2664	2712	bjsbjsf.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2664	2712	bjsbjsf.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2664	2712	bjsbjsf.exe	bjsbjsf.exe
PID 2712 wrote to memory of 2664	2712	bjsbjsf.exe	bjsbjsf.exe

outlook_office_path 1 IoCs

Processes:

bjsbjsf.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe

outlook_win_path 1 IoCs

Processes:

bjsbjsf.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	bjsbjsf.exe

C:\Users\Admin\AppData\Local\Temp\6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\6e457e014242287aa8649c939dc3bae0_JaffaCakes118.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1728

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\system32\notepad.exe"
2⤵
- Drops startup file
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1628

C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
"C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe"
3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:2712

C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
"C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe"
4⤵
- Checks computer location settings
- Executes dropped EXE
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- outlook_office_path
- outlook_win_path
PID:2600

C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
"C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe" 2 2600 259395404
4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2664

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\appdata\bjsbjsf.exe
Filesize
1.1MB

MD5
6e457e014242287aa8649c939dc3bae0

SHA1
2492dbc016d47b2bd5b6889b101d2061cd953cc8

SHA256
20f95b1751f2d7a5ecd7f8eb968cc5decb339f8fbc49c9515278ebfedd1ad159

SHA512
8166c207e72da75a87b52e15ccd18cd827ec4d5623414866a605c2129ef473c78829170c999b8017f81995bcf4a5a8833da89b720921ab71a1d4b5c6242700ef

Download Submit
memory/1628-7-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1628-4-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/1728-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1728-2-0x0000000000280000-0x0000000000290000-memory.dmp

Filesize
64KB

Download
memory/1728-1-0x0000000000280000-0x0000000000290000-memory.dmp

Filesize
64KB

Download
memory/1728-3-0x0000000000370000-0x0000000000371000-memory.dmp

Filesize
4KB

Download
memory/1728-6-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/2600-32-0x0000000000400000-0x0000000000541000-memory.dmp

Filesize
1.3MB

Download
memory/2600-23-0x0000000000400000-0x0000000000541000-memory.dmp

Filesize
1.3MB

Download
memory/2600-30-0x0000000000400000-0x0000000000541000-memory.dmp

Filesize
1.3MB

Download
memory/2600-31-0x0000000001E00000-0x0000000001E9A000-memory.dmp

Filesize
616KB

Download
memory/2600-29-0x0000000000400000-0x0000000000541000-memory.dmp

Filesize
1.3MB

Download
memory/2600-45-0x0000000004A60000-0x0000000004AA4000-memory.dmp

Filesize
272KB

Download
memory/2600-47-0x0000000005B00000-0x0000000005B14000-memory.dmp

Filesize
80KB

Download
memory/2600-55-0x0000000000400000-0x0000000000541000-memory.dmp

Filesize
1.3MB

Download
memory/2664-56-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/2712-25-0x0000000000400000-0x0000000000517000-memory.dmp

Filesize
1.1MB

Download
memory/2712-18-0x00000000001C0000-0x00000000001C1000-memory.dmp

Filesize
4KB

Download