masslogger | e6d6efece3b8baf2d0373c8adc270be90e9e6d48ffdf6c3253646075dd4c2fdc

Analysis

max time kernel
87s
max time network
121s
platform
windows7_x64
resource
win7-20220414-en
submitted
20-05-2022 23:38

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General

Target

company letter_pdf_______________________________________.exe
Size

1.7MB
MD5

f013528fbca058469f52035d94bea1af
SHA1

28c80b4151a987f318d6faae6bf19d9566c3cc75
SHA256

b46571fd44360c7d8e9771a807c0914f419dc7dc69a43b475b537484a1aa5053
SHA512

a31622815b06eb2d22e6648d2fe540568ee571667170eda34d14344573fa5285cd548558e6ec67b9f094d930f65c2f19f7b4f97e60fa201a30278f33259b8905

Score

10^/10

masslogger collection spyware stealer upx

Malware Config

Signatures

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.

yara_rule
masslogger_log_file

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0008000000012333-629.dat	acprotect

UPX packed file 1 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/files/0x0008000000012333-629.dat	upx

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	company letter_pdf_______________________________________.exe

Loads dropped DLL 1 IoCs

pid	Process
744	company letter_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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	company letter_pdf_______________________________________.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	company letter_pdf_______________________________________.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	company letter_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.

flow	ioc
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1628 set thread context of 744	1628	company letter_pdf_______________________________________.exe	28

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
744	company letter_pdf_______________________________________.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
744	company letter_pdf_______________________________________.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	744	company letter_pdf_______________________________________.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
744	company letter_pdf_______________________________________.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28
PID 1628 wrote to memory of 744	1628	company letter_pdf_______________________________________.exe	28

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	company letter_pdf_______________________________________.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	company letter_pdf_______________________________________.exe

C:\Users\Admin\AppData\Local\Temp\company letter_pdf_______________________________________.exe
"C:\Users\Admin\AppData\Local\Temp\company letter_pdf_______________________________________.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1628
- C:\Users\Admin\AppData\Local\Temp\company letter_pdf_______________________________________.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Loads dropped DLL
  - 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:744

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

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

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Downloads

\Users\Admin\AppData\Local\Temp\Costura\8E3603ED8A0381E02887C1DBBE921340\32\sqlite.interop.dll

Filesize
594KB

MD5
e81aeac387c5db32b7f9b07d15e788e0

SHA1
829be6eaf1cb0d82b2ddfc98272e1087f4a7a7c3

SHA256
44f31f99f048bfc5195937353b5207332e455bcd5a722bcfd32cacfd93f60f06

SHA512
cc6a96325a01c50c059706a1f4156f109e502ef9c0b0f5de209d1f52e7cc973cebc027f57ed988e9d1b8fca62746b60ee7430d608de95cdd0e5ac3cb61fbe32e

Download Submit
memory/744-86-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-63-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-633-0x00000000005A0000-0x0000000000600000-memory.dmp

Filesize
384KB

Download
memory/744-88-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-59-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-92-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-62-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-90-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-66-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-68-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-70-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-72-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-74-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-76-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-78-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-80-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-82-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-84-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-632-0x00000000067C0000-0x0000000006850000-memory.dmp

Filesize
576KB

Download
memory/744-58-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-631-0x0000000004F20000-0x0000000004F64000-memory.dmp

Filesize
272KB

Download
memory/744-61-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-94-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-96-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-98-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-100-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-102-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-104-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-108-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-106-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-110-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-112-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-114-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-116-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-118-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/744-120-0x0000000000400000-0x0000000000560000-memory.dmp

Filesize
1.4MB

Download
memory/1628-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1628-56-0x00000000003E0000-0x00000000003EA000-memory.dmp

Filesize
40KB

Download
memory/1628-54-0x0000000000BF0000-0x0000000000DAE000-memory.dmp

Filesize
1.7MB

Download
memory/1628-57-0x0000000005A10000-0x0000000005B78000-memory.dmp

Filesize
1.4MB

Download