masslogger | 621617fede3ceec20c51560f4c2aff347bf760a5182a3458d5f45f9d8c6acee3

General

Target

Maersk Ratesheet.Scan...exe
Size

1.2MB
MD5

74cff6e4840dd481d888d12f89629f4a
SHA1

4d8b01c1939faf241abdeef11e87a16c498bc2e2
SHA256

53b4179d18dc27443d5182752aaf6d78253ec7fc4eac192dcf6078884af51535
SHA512

9a3edd39d511c4098cc976d072a2d0b628aaff76be126f5b1143a8114cf56183aed64aacbca48b8ce5086a79f4b1acbc16144a2800e9b10a558604cdbc90adeb

Score

10^/10

masslogger ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 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: 5/20/2022 5:22:23 PM MassLogger Started: 5/20/2022 5:22:00 PM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

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

MassLogger Main Payload 31 IoCs

Processes:

resource	yara_rule
behavioral1/memory/948-58-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-60-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-63-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-65-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-67-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-69-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-71-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-73-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-75-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-77-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-79-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-81-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-83-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-89-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-87-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-85-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-91-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-93-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-95-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-99-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-103-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-101-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-105-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-107-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-111-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-113-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-115-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-117-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-119-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-109-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger
behavioral1/memory/948-97-0x0000000000620000-0x00000000006C8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

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:

Maersk Ratesheet.Scan...exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	Maersk Ratesheet.Scan...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\vvbn.vbs notepad.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:

Maersk Ratesheet.Scan...exe

description pid process target process

PID 1884 set thread context of 948 1884 Maersk Ratesheet.Scan...exe Maersk Ratesheet.Scan...exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Maersk Ratesheet.Scan...exeMaersk Ratesheet.Scan...exe

pid process

1884 Maersk Ratesheet.Scan...exe
948 Maersk Ratesheet.Scan...exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

Maersk Ratesheet.Scan...exe

pid process

1884 Maersk Ratesheet.Scan...exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Maersk Ratesheet.Scan...exe

description pid process

Token: SeDebugPrivilege 948 Maersk Ratesheet.Scan...exe

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

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1884 set thread context of 948	1884	Maersk Ratesheet.Scan...exe	Maersk Ratesheet.Scan...exe

pid	process
1884	Maersk Ratesheet.Scan...exe
948	Maersk Ratesheet.Scan...exe

pid	process
1884	Maersk Ratesheet.Scan...exe

description	pid	process
Token: SeDebugPrivilege	948	Maersk Ratesheet.Scan...exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

Maersk Ratesheet.Scan...exe

description	pid	process	target process
PID 1884 wrote to memory of 1396	1884	Maersk Ratesheet.Scan...exe	notepad.exe
PID 1884 wrote to memory of 1396	1884	Maersk Ratesheet.Scan...exe	notepad.exe
PID 1884 wrote to memory of 1396	1884	Maersk Ratesheet.Scan...exe	notepad.exe
PID 1884 wrote to memory of 1396	1884	Maersk Ratesheet.Scan...exe	notepad.exe
PID 1884 wrote to memory of 1396	1884	Maersk Ratesheet.Scan...exe	notepad.exe
PID 1884 wrote to memory of 1396	1884	Maersk Ratesheet.Scan...exe	notepad.exe
PID 1884 wrote to memory of 948	1884	Maersk Ratesheet.Scan...exe	Maersk Ratesheet.Scan...exe
PID 1884 wrote to memory of 948	1884	Maersk Ratesheet.Scan...exe	Maersk Ratesheet.Scan...exe
PID 1884 wrote to memory of 948	1884	Maersk Ratesheet.Scan...exe	Maersk Ratesheet.Scan...exe
PID 1884 wrote to memory of 948	1884	Maersk Ratesheet.Scan...exe	Maersk Ratesheet.Scan...exe

C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe
"C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1884

C:\Windows\SysWOW64\notepad.exe
"C:\Windows\system32\notepad.exe"
2⤵
- Drops startup file
PID:1396

C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe
"C:\Users\Admin\AppData\Local\Temp\Maersk Ratesheet.Scan...exe"
2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:948

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/948-87-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-58-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-83-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-89-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-568-0x0000000004CD5000-0x0000000004CE6000-memory.dmp

Filesize
68KB

Download
memory/948-60-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-63-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-65-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-67-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-69-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-71-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-73-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-75-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-77-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-79-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-81-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-57-0x0000000000565850-mapping.dmp

Download
memory/948-97-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-109-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-85-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-91-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-93-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-95-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-99-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-103-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-101-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-105-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-107-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-111-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-113-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-115-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-117-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/948-119-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/1396-55-0x0000000000000000-mapping.dmp

Download
memory/1884-54-0x0000000075D21000-0x0000000075D23000-memory.dmp

Filesize
8KB

Download
memory/1884-59-0x0000000000400000-0x0000000000535000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads