masslogger | 0b1e16ec3b9df30065ab12858d60db441afa2ad9f96e9a32e1f6c94eb675c71c

General

Target

RFQ #031-24062020.exe
Size

729KB
MD5

4400d1b5d0c379b8e5dade14b3346569
SHA1

5d7a1f8777069ac6462cdcd7aaa885b10e23472f
SHA256

851f1641fb283113cc5feb03c807bc82dc4d85ecd22ab8ff091a8edd71bb45ed
SHA512

75a275fda65c52cc831fc4750aecfc23408c86db5e0532566701902c32ac3807a918a89286f3ff795173c0af7cc5cf8e5c63a3c61fbc5762ed0cfe3d89386dd6

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v2.0.0.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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 12:38:52 PM MassLogger Started: 5/21/2022 12:38:41 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
binu@metalfabme.icu
Password:
@Brazil20,,

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger
MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1808-57-0x00000000060B0000-0x0000000006146000-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:

RFQ #031-24062020.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	RFQ #031-24062020.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:

RFQ #031-24062020.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RFQ #031-24062020.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RFQ #031-24062020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RFQ #031-24062020.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RFQ #031-24062020.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RFQ #031-24062020.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RFQ #031-24062020.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:

RFQ #031-24062020.exe

description pid process target process

PID 1808 set thread context of 940 1808 RFQ #031-24062020.exe RFQ #031-24062020.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

1944 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

RFQ #031-24062020.exe

pid process

940 RFQ #031-24062020.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

RFQ #031-24062020.exe

pid process

940 RFQ #031-24062020.exe
940 RFQ #031-24062020.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

RFQ #031-24062020.exe

description pid process

Token: SeDebugPrivilege 940 RFQ #031-24062020.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RFQ #031-24062020.exe

pid process

940 RFQ #031-24062020.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1808 set thread context of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe

pid	process
1944	schtasks.exe

pid	process
940	RFQ #031-24062020.exe

pid	process
940	RFQ #031-24062020.exe
940	RFQ #031-24062020.exe

description	pid	process
Token: SeDebugPrivilege	940	RFQ #031-24062020.exe

pid	process
940	RFQ #031-24062020.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

RFQ #031-24062020.exe

description	pid	process	target process
PID 1808 wrote to memory of 1944	1808	RFQ #031-24062020.exe	schtasks.exe
PID 1808 wrote to memory of 1944	1808	RFQ #031-24062020.exe	schtasks.exe
PID 1808 wrote to memory of 1944	1808	RFQ #031-24062020.exe	schtasks.exe
PID 1808 wrote to memory of 1944	1808	RFQ #031-24062020.exe	schtasks.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe
PID 1808 wrote to memory of 940	1808	RFQ #031-24062020.exe	RFQ #031-24062020.exe

outlook_office_path 1 IoCs

Processes:

RFQ #031-24062020.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe

outlook_win_path 1 IoCs

Processes:

RFQ #031-24062020.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RFQ #031-24062020.exe

C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1808

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\sbNdcfppRTjATG" /XML "C:\Users\Admin\AppData\Local\Temp\tmp35E0.tmp"
2⤵
- Creates scheduled task(s)
PID:1944

C:\Users\Admin\AppData\Local\Temp\RFQ #031-24062020.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:940

Network

MITRE ATT&CK Matrix ATT&CK 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

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp35E0.tmp
Filesize
1KB

MD5
704b80cfb9986cf3934f281b679f06ee

SHA1
74b46a2c5585c5b3f7201bfd4001eae1c5b205a9

SHA256
6460262f77b6a31c2dff3f4372b045f0f1b53b8ede171a71a64fa97ffb33467a

SHA512
edfe66ec5866115f059a8b5f7ae232f9777416ce2633c1f6a04b826f80a5ac5456d4247eb43178d1b9e3d82636bc3df18266ca0e89e746776b64be3a7dba8df3

Download Submit
memory/940-68-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/940-61-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/940-74-0x00000000046F5000-0x0000000004706000-memory.dmp

Filesize
68KB

Download
memory/940-73-0x00000000005B0000-0x00000000005C4000-memory.dmp

Filesize
80KB

Download
memory/940-64-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/940-60-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/940-71-0x0000000000730000-0x0000000000774000-memory.dmp

Filesize
272KB

Download
memory/940-63-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/940-70-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/940-65-0x0000000000400000-0x000000000048E000-memory.dmp

Filesize
568KB

Download
memory/940-66-0x00000000004895BE-mapping.dmp

Download
memory/1808-54-0x0000000000B30000-0x0000000000BEC000-memory.dmp

Filesize
752KB

Download
memory/1808-55-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

Filesize
8KB

Download
memory/1808-56-0x0000000000300000-0x0000000000310000-memory.dmp

Filesize
64KB

Download
memory/1808-57-0x00000000060B0000-0x0000000006146000-memory.dmp

Filesize
600KB

Download
memory/1944-58-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads