masslogger | 32439b531876d0d85388dd99e7693bd5557266ac6b686ee18073272acba05109

General

Target

kesh.exe
Size

1.3MB
MD5

aff458f89b918aca8c12c638ce8fece2
SHA1

24bddc3fee66de67a6db095ed22033af895e7b41
SHA256

3ce259abdca64cabc5ac51d1810ccff6a02fed247f4e65884d4fa4d23f18e086
SHA512

ae8c5e8afcfad1359566dee132b24dca1f8e40d3eadac9302075bb326b10ee7e1de25de3f37957dd7c665b2eb3687afd824b35003918b68e4c83fda7d69ada17

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.6.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 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: 5/25/2022 3:09:08 AM MassLogger Started: 5/25/2022 3:08:59 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\kesh.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 31 IoCs

resource	yara_rule
behavioral1/memory/1092-59-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-60-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-75-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-73-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-77-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-79-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-81-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-83-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-85-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-87-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-89-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-91-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-93-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-95-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-97-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-99-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-101-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-103-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-105-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-107-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-109-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-111-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-113-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-115-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-117-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-119-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-121-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-123-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-125-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-127-0x0000000001E70000-0x0000000001F22000-memory.dmp	family_masslogger
behavioral1/memory/1092-129-0x0000000001E70000-0x0000000001F22000-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 1 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-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	kesh.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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	kesh.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	kesh.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	kesh.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	kesh.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	kesh.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key created	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	kesh.exe
Key opened	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.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
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1976 set thread context of 1092	1976	kesh.exe	29

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1976	kesh.exe
1092	kesh.exe

Suspicious behavior: MapViewOfSection 1 IoCs

pid	Process
1976	kesh.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1092	kesh.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1976 wrote to memory of 880	1976	kesh.exe	28
PID 1976 wrote to memory of 880	1976	kesh.exe	28
PID 1976 wrote to memory of 880	1976	kesh.exe	28
PID 1976 wrote to memory of 880	1976	kesh.exe	28
PID 1976 wrote to memory of 880	1976	kesh.exe	28
PID 1976 wrote to memory of 880	1976	kesh.exe	28
PID 1976 wrote to memory of 1092	1976	kesh.exe	29
PID 1976 wrote to memory of 1092	1976	kesh.exe	29
PID 1976 wrote to memory of 1092	1976	kesh.exe	29
PID 1976 wrote to memory of 1092	1976	kesh.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	kesh.exe

outlook_win_path 1 IoCs

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	kesh.exe

C:\Users\Admin\AppData\Local\Temp\kesh.exe
"C:\Users\Admin\AppData\Local\Temp\kesh.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1976
- C:\Windows\SysWOW64\notepad.exe
  "C:\Windows\system32\notepad.exe"
  2⤵
  PID:880
- C:\Users\Admin\AppData\Local\Temp\kesh.exe
  "C:\Users\Admin\AppData\Local\Temp\kesh.exe"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:1092

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1092-97-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-587-0x0000000004B35000-0x0000000004B46000-memory.dmp

Filesize
68KB

Download
memory/1092-59-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-99-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-588-0x0000000005A50000-0x0000000005A64000-memory.dmp

Filesize
80KB

Download
memory/1092-75-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-73-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-77-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-79-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-81-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-83-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-85-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-87-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-89-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-91-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-93-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-95-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-101-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-60-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-105-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-103-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-107-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-109-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-111-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-113-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-115-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-117-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-119-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-121-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-123-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-125-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-127-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-129-0x0000000001E70000-0x0000000001F22000-memory.dmp

Filesize
712KB

Download
memory/1092-586-0x0000000004FB0000-0x0000000004FF4000-memory.dmp

Filesize
272KB

Download
memory/1976-54-0x00000000750C1000-0x00000000750C3000-memory.dmp

Filesize
8KB

Download
memory/1976-55-0x0000000001E70000-0x0000000001E79000-memory.dmp

Filesize
36KB

Download

Analysis

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