masslogger | 3ecc0863d79785e8b6cb8bf003fcff6c41195e278aaed426ed26144b11d3710c

Analysis

max time kernel
111s
max time network
152s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 12:43

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General

Target

PO_75463.exe
Size

821KB
MD5

0e39e0f49e3f74b7fe492f2f9b4e0969
SHA1

bc7fce8afc2a2d379e3e0714191dae859e3771a8
SHA256

b8ac4a45dbd25ba8bb4f71d53bb8615f6d00b9be95b6e976567377957d92c428
SHA512

a9b7539a91aa8593b5a15f2536069591e105ab75484a2bf3900aedbe9c2f6ab6bbed33ab000995f776471f51c86df17a17475c3997a000b854324d42eec4783c

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\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: 5/21/2022 3:16:47 PM MassLogger Started: 5/21/2022 3:16:36 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\PO_75463.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.ru
Port:
587
Username:
[email protected]
Password:
cruizjamesvhjkl@

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 32 IoCs

resource	yara_rule
behavioral3/memory/976-63-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-64-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-65-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-66-0x00000000004ACD7E-mapping.dmp	family_masslogger
behavioral3/memory/976-68-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-70-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-72-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-74-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-76-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-78-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-80-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-82-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-84-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-86-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-88-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-90-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-92-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-94-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-96-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-98-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-100-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-102-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-104-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-106-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-108-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-112-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-116-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-118-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-120-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-114-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-110-0x0000000000400000-0x00000000004B2000-memory.dmp	family_masslogger
behavioral3/memory/976-122-0x0000000000400000-0x00000000004B2000-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-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	PO_75463.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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO_75463.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO_75463.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO_75463.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	PO_75463.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	PO_75463.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	PO_75463.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.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 1764 set thread context of 976	1764	PO_75463.exe	31

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
1540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1764	PO_75463.exe
976	PO_75463.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1764	PO_75463.exe
Token: SeDebugPrivilege	976	PO_75463.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 1540	1764	PO_75463.exe	28
PID 1764 wrote to memory of 1540	1764	PO_75463.exe	28
PID 1764 wrote to memory of 1540	1764	PO_75463.exe	28
PID 1764 wrote to memory of 1540	1764	PO_75463.exe	28
PID 1764 wrote to memory of 592	1764	PO_75463.exe	30
PID 1764 wrote to memory of 592	1764	PO_75463.exe	30
PID 1764 wrote to memory of 592	1764	PO_75463.exe	30
PID 1764 wrote to memory of 592	1764	PO_75463.exe	30
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31
PID 1764 wrote to memory of 976	1764	PO_75463.exe	31

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	PO_75463.exe

C:\Users\Admin\AppData\Local\Temp\PO_75463.exe
"C:\Users\Admin\AppData\Local\Temp\PO_75463.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KSdCVEkTugesZ" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE63B.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1540
- C:\Users\Admin\AppData\Local\Temp\PO_75463.exe
  "C:\Users\Admin\AppData\Local\Temp\PO_75463.exe"
  2⤵
  PID:592
- C:\Users\Admin\AppData\Local\Temp\PO_75463.exe
  "C:\Users\Admin\AppData\Local\Temp\PO_75463.exe"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:976

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

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE63B.tmp

Filesize
1KB

MD5
5e63b5f2696a002748505392a95bdac1

SHA1
c26168e3d513b9b41fff1da81d73ebe9d9b02254

SHA256
b5df0a757c589886a7f3608b5e53696b57f4f4e80c6cb99b4082c4cb12b19bcf

SHA512
8ca70ca32f5d7a0e2693738d288074109fc2de4a418a887ea6174b8308f167499ebc1cb3ed937f46c3a65a0166fc283fe4f1df06ebfb7b424724139a2a1ef061

Download Submit
memory/976-84-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-61-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-90-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-590-0x0000000000B80000-0x0000000000B94000-memory.dmp

Filesize
80KB

Download
memory/976-589-0x0000000000E95000-0x0000000000EA6000-memory.dmp

Filesize
68KB

Download
memory/976-60-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-63-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-88-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-64-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-65-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-68-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-86-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-72-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-74-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-76-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-78-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-80-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-82-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-587-0x00000000003C0000-0x0000000000404000-memory.dmp

Filesize
272KB

Download
memory/976-70-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-122-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-110-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-92-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-94-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-96-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-98-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-100-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-102-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-104-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-106-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-108-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-112-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-116-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-118-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-120-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/976-114-0x0000000000400000-0x00000000004B2000-memory.dmp

Filesize
712KB

Download
memory/1764-57-0x0000000074F91000-0x0000000074F93000-memory.dmp

Filesize
8KB

Download
memory/1764-56-0x0000000005370000-0x000000000542A000-memory.dmp

Filesize
744KB

Download
memory/1764-54-0x0000000000FE0000-0x00000000010B4000-memory.dmp

Filesize
848KB

Download
memory/1764-55-0x0000000000330000-0x0000000000342000-memory.dmp

Filesize
72KB

Download