masslogger | 8c689dedf337057280913d9a8dfc9c10c297e2dc9669a1e19e2c8cbf99cd5ed9

General

Target

PO31909704_1.exe
Size

788KB
MD5

4425e6eccd87b5f867f0e8591b869c6c
SHA1

1c84f8ae03b5c314e64caec354130c4e9adc3974
SHA256

3e57aaffcd5dfe4c6487c73f7c457865405070f276efab07164f30be4741e733
SHA512

48aee6277d3bc33c3024f6c0fb3f889970bc80725af65995be71e9a78041a917b09c0945042b0704e8a4d7ed4db85af6213fbfc9335336596026013826dc2eb7

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.7.1 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 2:20:12 AM MassLogger Started: 5/21/2022 2:20:03 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO31909704_1.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 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1396-64-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1396-65-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1396-66-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1396-67-0x00000000004A2E6E-mapping.dmp	family_masslogger
behavioral1/memory/1396-69-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1396-71-0x0000000000400000-0x00000000004A8000-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:

PO31909704_1.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	PO31909704_1.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
T1081

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

PO31909704_1.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO31909704_1.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO31909704_1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO31909704_1.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO31909704_1.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO31909704_1.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO31909704_1.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.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:

PO31909704_1.exe

description pid process target process

PID 1560 set thread context of 1396 1560 PO31909704_1.exe PO31909704_1.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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
T1053

Processes:

schtasks.exe

pid process

1216 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

PO31909704_1.exe

pid process

1396 PO31909704_1.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

PO31909704_1.exePO31909704_1.exe

pid process

1560 PO31909704_1.exe
1560 PO31909704_1.exe
1560 PO31909704_1.exe
1560 PO31909704_1.exe
1396 PO31909704_1.exe
1396 PO31909704_1.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO31909704_1.exePO31909704_1.exe

description pid process

Token: SeDebugPrivilege 1560 PO31909704_1.exe
Token: SeDebugPrivilege 1396 PO31909704_1.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PO31909704_1.exe

pid process

1396 PO31909704_1.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1560 set thread context of 1396	1560	PO31909704_1.exe	PO31909704_1.exe

pid	process
1216	schtasks.exe

pid	process
1396	PO31909704_1.exe

pid	process
1560	PO31909704_1.exe
1560	PO31909704_1.exe
1560	PO31909704_1.exe
1560	PO31909704_1.exe
1396	PO31909704_1.exe
1396	PO31909704_1.exe

description	pid	process
Token: SeDebugPrivilege	1560	PO31909704_1.exe
Token: SeDebugPrivilege	1396	PO31909704_1.exe

pid	process
1396	PO31909704_1.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

PO31909704_1.exe

description	pid	process	target process
PID 1560 wrote to memory of 1216	1560	PO31909704_1.exe	schtasks.exe
PID 1560 wrote to memory of 1216	1560	PO31909704_1.exe	schtasks.exe
PID 1560 wrote to memory of 1216	1560	PO31909704_1.exe	schtasks.exe
PID 1560 wrote to memory of 1216	1560	PO31909704_1.exe	schtasks.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe
PID 1560 wrote to memory of 1396	1560	PO31909704_1.exe	PO31909704_1.exe

outlook_office_path 1 IoCs

Processes:

PO31909704_1.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe

outlook_win_path 1 IoCs

Processes:

PO31909704_1.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO31909704_1.exe

C:\Users\Admin\AppData\Local\Temp\PO31909704_1.exe
"C:\Users\Admin\AppData\Local\Temp\PO31909704_1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1560

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mLTzugcgmAqgi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8547.tmp"
2⤵
- Creates scheduled task(s)
PID:1216

C:\Users\Admin\AppData\Local\Temp\PO31909704_1.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:1396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8547.tmp

Filesize
1KB

MD5
2725a4d6e221841703a09ef7b8537114

SHA1
b8c60f7aff709201c2e462c19aeb58733aaf8ab0

SHA256
b745232e4ff5156f07063d6b459403830f94d2efc829846a7efc01e7bdf02348

SHA512
dd6c13f9e39daf1348bfac4cdf093d80ed8f7d0cdf5562561a88692d28b4e0fc1a0b7e5ccc9a987b00508148efb5d3ad0f32b1b33024c134efe7e8dbaad4fe41

Download Submit
memory/1216-59-0x0000000000000000-mapping.dmp

Download
memory/1396-67-0x00000000004A2E6E-mapping.dmp

Download
memory/1396-69-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1396-74-0x00000000045C5000-0x00000000045D6000-memory.dmp

Filesize
68KB

Download
memory/1396-72-0x0000000000A80000-0x0000000000AC4000-memory.dmp

Filesize
272KB

Download
memory/1396-71-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1396-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1396-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1396-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1396-65-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1396-66-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1560-55-0x0000000000370000-0x000000000037A000-memory.dmp

Filesize
40KB

Download
memory/1560-54-0x0000000000E00000-0x0000000000ECC000-memory.dmp

Filesize
816KB

Download
memory/1560-57-0x0000000007E50000-0x0000000007EF8000-memory.dmp

Filesize
672KB

Download
memory/1560-56-0x0000000005740000-0x00000000057F0000-memory.dmp

Filesize
704KB

Download
memory/1560-58-0x00000000752B1000-0x00000000752B3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads