masslogger | 05b37fed91a4de9d7442349ccd379719c3b9dd9b220d28b702adfb25f05d010c

Analysis

max time kernel
129s
max time network
133s
platform
windows7_x64
resource
win7-20220414-en
submitted
20-05-2022 13:01

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General

Target

scan00465.pdf.exe
Size

1.1MB
MD5

6518afc08223493b4e6303248a6c70d0
SHA1

e0b419b7f13e1271f32b46551febed8d5168f328
SHA256

f98d355a4771e886220488b0bffa005af9769480cde5aad275d4166c2f9b2e48
SHA512

85a3956cccf90116220b6cd6bc63898806bc703589d5e5d7ccc4bfc13a0908ea3538d4b5dbc7af075e11c016f18029e11a7c510ed1af393f4e1ef9244cc71813

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8506BBE7FF\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.13 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 3:06:10 PM MassLogger Started: 5/20/2022 3:05:56 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

Protocol: smtp
Host:
mail.saritatravels.com
Port:
587
Username:
[email protected]
Password:
sumits%$321

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/548-57-0x0000000007D50000-0x0000000007E08000-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:

scan00465.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Control Panel\International\Geo\Nation	scan00465.pdf.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:

scan00465.pdf.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	scan00465.pdf.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:

scan00465.pdf.exe

description pid process target process

PID 548 set thread context of 2008 548 scan00465.pdf.exe scan00465.pdf.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

1948 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

scan00465.pdf.exescan00465.pdf.exe

pid process

548 scan00465.pdf.exe
2008 scan00465.pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

scan00465.pdf.exescan00465.pdf.exe

description pid process

Token: SeDebugPrivilege 548 scan00465.pdf.exe
Token: SeDebugPrivilege 2008 scan00465.pdf.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 548 set thread context of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe

pid	process
1948	schtasks.exe

pid	process
548	scan00465.pdf.exe
2008	scan00465.pdf.exe

description	pid	process
Token: SeDebugPrivilege	548	scan00465.pdf.exe
Token: SeDebugPrivilege	2008	scan00465.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

scan00465.pdf.exe

description	pid	process	target process
PID 548 wrote to memory of 1948	548	scan00465.pdf.exe	schtasks.exe
PID 548 wrote to memory of 1948	548	scan00465.pdf.exe	schtasks.exe
PID 548 wrote to memory of 1948	548	scan00465.pdf.exe	schtasks.exe
PID 548 wrote to memory of 1948	548	scan00465.pdf.exe	schtasks.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe
PID 548 wrote to memory of 2008	548	scan00465.pdf.exe	scan00465.pdf.exe

outlook_office_path 1 IoCs

Processes:

scan00465.pdf.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe

outlook_win_path 1 IoCs

Processes:

scan00465.pdf.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe

C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:548

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\lxKUUSvBoqI" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8DE.tmp"
2⤵
- Creates scheduled task(s)
PID:1948

C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe
"{path}"
2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
PID:2008

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA8DE.tmp

Filesize
1KB

MD5
18ff5590b15cde9d345ded92949d7c37

SHA1
a128ee96ea031017f2111618421bcb700e495f60

SHA256
bddf65cfd91ff3e0a52d7b63ebc6956cc482601306c82e719f9f7697e79d9806

SHA512
af6763ba0f50cfa0ed603331b287bedae904fab20762687d99882a1005a11ca46d5d88c8a986d28b0a72fe84d366f1220827526b9f122ef67e9bc77617e8e5da

Download Submit
memory/548-54-0x0000000000980000-0x0000000000AA0000-memory.dmp

Filesize
1.1MB

Download
memory/548-55-0x0000000075D21000-0x0000000075D23000-memory.dmp

Filesize
8KB

Download
memory/548-56-0x0000000001EB0000-0x0000000001EC4000-memory.dmp

Filesize
80KB

Download
memory/548-57-0x0000000007D50000-0x0000000007E08000-memory.dmp

Filesize
736KB

Download
memory/1948-58-0x0000000000000000-mapping.dmp

Download
memory/2008-84-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-94-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-63-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-64-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-65-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-66-0x00000000004AB99E-mapping.dmp

Download
memory/2008-68-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-70-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-72-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-74-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-76-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-78-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-80-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-82-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-60-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-86-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-88-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-90-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-92-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-61-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-96-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-98-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-100-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-102-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-104-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-106-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-108-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-110-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-112-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-114-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-116-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-118-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-120-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-122-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2008-581-0x00000000006B0000-0x00000000006F4000-memory.dmp

Filesize
272KB

Download
memory/2008-583-0x0000000002305000-0x0000000002316000-memory.dmp

Filesize
68KB

Download
memory/2008-584-0x00000000021A0000-0x00000000021B4000-memory.dmp

Filesize
80KB

Download