masslogger | 04ef0a62b8d14320163fa5bd84f000d05cbecffe1f65adfac23db9825c7f10ba

General

Target

scan00465.pdf.exe
Size

1.2MB
MD5

52555fd6673c6f44b7b57d6e1833d1ef
SHA1

6c7dc7a759845917b43da8d5dd73e8f34623adff
SHA256

9ae31235da17306c07a77f94a3541a835f0033df9bc7636a39c984e8cea9e72a
SHA512

a217c4dc99f575c76d3894f2a4e78d810d00a8e5423093c3e9e622b4f94f46261efb74be76278d72c139f0196d20774ecc0ceb2f670768932fcf4e439df38847

Score

10^/10

masslogger collection coreentity ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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 1:02:53 PM MassLogger Started: 5/21/2022 1:02:42 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

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1800-57-0x0000000000640000-0x0000000000648000-memory.dmp	coreentity

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/1800-58-0x0000000006380000-0x0000000006438000-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-1-5-21-1819626980-2277161760-1023733287-1000\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 opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	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

3 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

scan00465.pdf.exe

description pid process target process

PID 1800 set thread context of 1680 1800 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

1716 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

scan00465.pdf.exescan00465.pdf.exe

pid process

1800 scan00465.pdf.exe
1680 scan00465.pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

scan00465.pdf.exescan00465.pdf.exe

description pid process

Token: SeDebugPrivilege 1800 scan00465.pdf.exe
Token: SeDebugPrivilege 1680 scan00465.pdf.exe

flow	ioc
3	api.ipify.org

description	pid	process	target process
PID 1800 set thread context of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe

pid	process
1716	schtasks.exe

pid	process
1800	scan00465.pdf.exe
1680	scan00465.pdf.exe

description	pid	process
Token: SeDebugPrivilege	1800	scan00465.pdf.exe
Token: SeDebugPrivilege	1680	scan00465.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

scan00465.pdf.exe

description	pid	process	target process
PID 1800 wrote to memory of 1716	1800	scan00465.pdf.exe	schtasks.exe
PID 1800 wrote to memory of 1716	1800	scan00465.pdf.exe	schtasks.exe
PID 1800 wrote to memory of 1716	1800	scan00465.pdf.exe	schtasks.exe
PID 1800 wrote to memory of 1716	1800	scan00465.pdf.exe	schtasks.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe
PID 1800 wrote to memory of 1680	1800	scan00465.pdf.exe	scan00465.pdf.exe

outlook_office_path 1 IoCs

Processes:

scan00465.pdf.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\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-1-5-21-1819626980-2277161760-1023733287-1000\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:1800

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\LOPSNfzrlbcrm" /XML "C:\Users\Admin\AppData\Local\Temp\tmp20BB.tmp"
2⤵
- Creates scheduled task(s)
PID:1716

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:1680

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\tmp20BB.tmp
Filesize
1KB

MD5
750e658b9a9e6f1d2af0e0294db0d4b4

SHA1
6774c7985bc6b525a9bca5c6ad9fe9ecca1a26c7

SHA256
0608abf78a095ecbf0cdfb0ffdbb2b050adc5c75b7170e3d7dda30990dc2cfea

SHA512
fae267723e875145736030791c6efd3a61ca2dd6f4c89098dd9dca0888f8b8de8d772aec425388a7330f892c0b8096d7b775ea21e885e447de16493b123781b6

Download Submit
memory/1680-87-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-107-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-585-0x0000000000770000-0x0000000000784000-memory.dmp

Filesize
80KB

Download
memory/1680-85-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-582-0x00000000007D0000-0x0000000000814000-memory.dmp

Filesize
272KB

Download
memory/1680-123-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-61-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-62-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-64-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-65-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-66-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-67-0x00000000004AB99E-mapping.dmp

Download
memory/1680-69-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-71-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-73-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-89-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-77-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-79-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-81-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-83-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-584-0x0000000000F05000-0x0000000000F16000-memory.dmp

Filesize
68KB

Download
memory/1680-121-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-75-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-91-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-93-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-95-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-97-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-99-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-101-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-103-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-105-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-119-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-109-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-111-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-113-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-115-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1680-117-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1716-59-0x0000000000000000-mapping.dmp

Download
memory/1800-56-0x0000000074E91000-0x0000000074E93000-memory.dmp

Filesize
8KB

Download
memory/1800-58-0x0000000006380000-0x0000000006438000-memory.dmp

Filesize
736KB

Download
memory/1800-55-0x0000000000FB0000-0x000000000107E000-memory.dmp

Filesize
824KB

Download
memory/1800-54-0x0000000001090000-0x00000000011C0000-memory.dmp

Filesize
1.2MB

Download
memory/1800-57-0x0000000000640000-0x0000000000648000-memory.dmp

Filesize
32KB

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