masslogger | e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3

General

Target

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Size

789KB
MD5

b716d85bbaee06cea80c5d5eb8f9d965
SHA1

2c5b15f20d9d698f33a656c5ea76ed372f96f65b
SHA256

e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3
SHA512

b9093c79128bfbe76740de770055c2bc8e5b9cde9046f4f3d5c6e8c86ea47f60cffd1f3ef7c382a1b0e257466162365905c85ced5668264cdcd1e32e18f9a905

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\0F48153F20\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 10 Pro64bit Windows Serial Key: W269N-WFGWX-YVC9B-4J6C9-T83GX CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/24/2022 11:32:55 PM MassLogger Started: 5/24/2022 11:32:52 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.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 1 IoCs

resource	yara_rule
behavioral2/memory/3528-137-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

yara_rule
masslogger_log_file

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.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 18 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.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.

flow	ioc
37	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89

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

pid	Process
4564	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3528	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3528	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
3528	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3528	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3528	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 4564	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	87
PID 4740 wrote to memory of 4564	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	87
PID 4740 wrote to memory of 4564	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	87
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89
PID 4740 wrote to memory of 3528	4740	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe	89

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe

C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe
"C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PvKSHQfyvmnXd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCB10.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4564
- C:\Users\Admin\AppData\Local\Temp\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.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:3528

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\Microsoft\CLR_v4.0_32\UsageLogs\e4dff6694f28d833ff1087e64c1498c9c9232abdcebf324bffdcbe322a125bb3.exe.log

Filesize
507B

MD5
ab4c71d3ff6255edd4e5c1e09540f49e

SHA1
22e06bf4e258741b5df918061871cba998c50cea

SHA256
1690fec628f775dd3c3385b800eed126b37978ef2ffd592b024052724caafb5a

SHA512
8fa7d0045796e6cda7c28e2b9a690ef550619828c1b5d0ebf8e8367aff4bf4d9f63121e5b4f199d30cb8006eb584c6767f4c59150749b8256dab9dd0ebd9f1af

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpCB10.tmp

Filesize
1KB

MD5
4d730f1fe389fb38e80735591127ba1a

SHA1
a24dcd8f91e3bbd1cdfed8b491326d2ec7787612

SHA256
c450bf56287bba8df8f1da436c6c885a1714cf8461798946223dec31113ec967

SHA512
6730d7f86e213e79a5d87df6ddbe05a743433e79f664917b0d702dcd649f0079bfaebb8277b64cbf5e8811d1b76f7153100c0ad58264090385381559bf3da5ff

Download Submit
memory/3528-137-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/3528-139-0x0000000005D80000-0x0000000005DE6000-memory.dmp

Filesize
408KB

Download
memory/3528-140-0x0000000007070000-0x000000000707A000-memory.dmp

Filesize
40KB

Download
memory/3528-141-0x0000000007BB0000-0x0000000007C00000-memory.dmp

Filesize
320KB

Download
memory/4740-130-0x0000000000DD0000-0x0000000000E9C000-memory.dmp

Filesize
816KB

Download
memory/4740-131-0x00000000056A0000-0x000000000573C000-memory.dmp

Filesize
624KB

Download
memory/4740-132-0x0000000005870000-0x0000000005902000-memory.dmp

Filesize
584KB

Download
memory/4740-133-0x00000000066D0000-0x0000000006C74000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads