masslogger | 0971cbc70ca0abf88a7059f0eb904112d64db2355890bc956244b44371534a28

General

Target

RFQ.exe
Size

875KB
MD5

d09e24ff3e15d721e4a7feac4e9b1ef5
SHA1

12017612e0361f56a2d1fd593a3b54895a34f4a9
SHA256

776a4ff176f431da77a945cf047746d71aa1b629c743d16a8018f883692cf7c8
SHA512

9c084b6b92a0cfb0bf7d3eef6aee45a3fd881a968b95e07b268093bb7b41d52bae883b4df012f58afe36d044fa75a6da37384e84b23166b7e6dc7ac770c43d2d

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 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: 5/21/2022 3:12:06 PM MassLogger Started: 5/21/2022 3:11:39 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\RFQ.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

Protocol: smtp
Host:
mail.ucfblr.com
Port:
587
Username:
narasimha.murthy@ucfblr.com
Password:
Nam@123s#

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/1212-56-0x00000000055B0000-0x0000000005668000-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.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation RFQ.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

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

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

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

description pid process target process

PID 1212 set thread context of 1968 1212 RFQ.exe RFQ.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

1204 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

RFQ.exe

pid process

1968 RFQ.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

RFQ.exeRFQ.exe

pid process

1212 RFQ.exe
1968 RFQ.exe
1968 RFQ.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ.exeRFQ.exe

description pid process

Token: SeDebugPrivilege 1212 RFQ.exe
Token: SeDebugPrivilege 1968 RFQ.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RFQ.exe

pid process

1968 RFQ.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1212 set thread context of 1968	1212	RFQ.exe	RFQ.exe

pid	process
1204	schtasks.exe

pid	process
1968	RFQ.exe

pid	process
1212	RFQ.exe
1968	RFQ.exe
1968	RFQ.exe

description	pid	process
Token: SeDebugPrivilege	1212	RFQ.exe
Token: SeDebugPrivilege	1968	RFQ.exe

pid	process
1968	RFQ.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

RFQ.exe

description	pid	process	target process
PID 1212 wrote to memory of 1204	1212	RFQ.exe	schtasks.exe
PID 1212 wrote to memory of 1204	1212	RFQ.exe	schtasks.exe
PID 1212 wrote to memory of 1204	1212	RFQ.exe	schtasks.exe
PID 1212 wrote to memory of 1204	1212	RFQ.exe	schtasks.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe
PID 1212 wrote to memory of 1968	1212	RFQ.exe	RFQ.exe

outlook_office_path 1 IoCs

Processes:

RFQ.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	RFQ.exe

outlook_win_path 1 IoCs

Processes:

RFQ.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	RFQ.exe

C:\Users\Admin\AppData\Local\Temp\RFQ.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1212

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\oLpxgY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp35F0.tmp"
2⤵
- Creates scheduled task(s)
PID:1204

C:\Users\Admin\AppData\Local\Temp\RFQ.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:1968

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

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp35F0.tmp
Filesize
1KB

MD5
06ebb3f8d319f6c3e6a8e48920d6abc5

SHA1
761f1268e7ede20d44e2f6b03995a6a58c22d09b

SHA256
c551dd15992fa84d3fc759fc8ea5147ddaa05ba8cd3e8eb218888b5c103a1296

SHA512
47f95e235cc18760091ab234b76415942d466040b8cd9dd6614d7ca39150809995ef53869114fb75e87fef0cb117c233c078fc93f0b21023ff0d58ddd0cab28d

Download Submit
memory/1204-57-0x0000000000000000-mapping.dmp

Download
memory/1212-54-0x0000000001000000-0x00000000010E2000-memory.dmp

Filesize
904KB

Download
memory/1212-55-0x0000000000300000-0x0000000000310000-memory.dmp

Filesize
64KB

Download
memory/1212-56-0x00000000055B0000-0x0000000005668000-memory.dmp

Filesize
736KB

Download
memory/1968-93-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-87-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-62-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-64-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-65-0x00000000004AB89E-mapping.dmp

Download
memory/1968-63-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-67-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-69-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-71-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-75-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-81-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-79-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-85-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-91-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-95-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-59-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-89-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-99-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-97-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-60-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-83-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-77-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-105-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-115-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-121-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-123-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-119-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-117-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-113-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-111-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-109-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-107-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-103-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-101-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-73-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1968-578-0x0000000000550000-0x0000000000594000-memory.dmp

Filesize
272KB

Download
memory/1968-580-0x0000000000FC5000-0x0000000000FD6000-memory.dmp

Filesize
68KB

Download
memory/1968-581-0x0000000000CD0000-0x0000000000CE4000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads