masslogger | e0aa6c2f673df8b8a98d3df001a392914384b5adf043652f11b123a6a2c49237

General

Target

Product_List.exe
Size

818KB
MD5

f5dae3fabd45aa5800a808d8ee39f2c6
SHA1

be546bc5dbcf5bef88c03223935dfd40d893c15f
SHA256

0f589bd3c4bfdf1301a52c6b4b9f9202ab61131bb7230f4e91767b28894005b2
SHA512

f305b8c015cf613017fbee486133d8ab675d2e9d1023c503f0dc8fe6e62f14593bbb25b54b00a321976792c322efe057a8e42612b77e5ef1bd80ad05ca2d8b64

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 v1.3.7.1 ################################################################# ### 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 3:03:53 AM MassLogger Started: 5/21/2022 3:03:43 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Product_List.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/1992-62-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1992-63-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1992-64-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1992-65-0x00000000004A302E-mapping.dmp	family_masslogger
behavioral1/memory/1992-67-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1992-69-0x0000000000400000-0x00000000004A8000-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

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1396-56-0x00000000009F0000-0x0000000000AA0000-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:

Product_List.exe

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

Product_List.exe

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

Product_List.exe

description pid process target process

PID 1396 set thread context of 1992 1396 Product_List.exe Product_List.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

1096 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Product_List.exe

pid process

1992 Product_List.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Product_List.exe

pid process

1992 Product_List.exe
1992 Product_List.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

Product_List.exe

description pid process

Token: SeDebugPrivilege 1992 Product_List.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Product_List.exe

pid process

1992 Product_List.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1396 set thread context of 1992	1396	Product_List.exe	Product_List.exe

pid	process
1096	schtasks.exe

pid	process
1992	Product_List.exe

pid	process
1992	Product_List.exe
1992	Product_List.exe

description	pid	process
Token: SeDebugPrivilege	1992	Product_List.exe

pid	process
1992	Product_List.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

Product_List.exe

description	pid	process	target process
PID 1396 wrote to memory of 1096	1396	Product_List.exe	schtasks.exe
PID 1396 wrote to memory of 1096	1396	Product_List.exe	schtasks.exe
PID 1396 wrote to memory of 1096	1396	Product_List.exe	schtasks.exe
PID 1396 wrote to memory of 1096	1396	Product_List.exe	schtasks.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe
PID 1396 wrote to memory of 1992	1396	Product_List.exe	Product_List.exe

outlook_office_path 1 IoCs

Processes:

Product_List.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	Product_List.exe

outlook_win_path 1 IoCs

Processes:

Product_List.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	Product_List.exe

C:\Users\Admin\AppData\Local\Temp\Product_List.exe
"C:\Users\Admin\AppData\Local\Temp\Product_List.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tjTdXj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp456A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1096
- C:\Users\Admin\AppData\Local\Temp\Product_List.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:1992

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\tmp456A.tmp

Filesize
1KB

MD5
c8fa65eb5d9ad443518e498cef199afa

SHA1
4b846708bf31d706041dda5b35e20a120566a3b7

SHA256
d4c61d3afc498b50b05f37a64f6e050a039773ba17d3f3e1c04a644f3fa83d51

SHA512
12e9844efca8695803b1cf5c3ae413659af6ef8a4743921eb40db5b97e86535b01fabcd383cd5f4fe12f2db39f4c3b1a9b21c2d1bc1eb42fe0cf64aa2c3b2ea0

Download Submit
memory/1096-57-0x0000000000000000-mapping.dmp

Download
memory/1396-54-0x0000000000B90000-0x0000000000C62000-memory.dmp

Filesize
840KB

Download
memory/1396-55-0x0000000000230000-0x0000000000246000-memory.dmp

Filesize
88KB

Download
memory/1396-56-0x00000000009F0000-0x0000000000AA0000-memory.dmp

Filesize
704KB

Download
memory/1992-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1992-60-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1992-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1992-59-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1992-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1992-65-0x00000000004A302E-mapping.dmp

Download
memory/1992-67-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1992-69-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1992-70-0x00000000004B0000-0x00000000004F4000-memory.dmp

Filesize
272KB

Download
memory/1992-71-0x0000000075C71000-0x0000000075C73000-memory.dmp

Filesize
8KB

Download
memory/1992-72-0x0000000004DB5000-0x0000000004DC6000-memory.dmp

Filesize
68KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads