masslogger | 4a2998327c65c07148f057e65326099b17a27159243bc8851e8aef90d12ec860

General

Target

PO.exe
Size

1.5MB
MD5

f512638b09983b315c24199bffae80cc
SHA1

f62de084522901915b43ce766bca6e3a0797cdf3
SHA256

f937bbe27c6d52452a121bc9aa320c26ae7eada7cadc9dda0fafc2c6b1bd5818
SHA512

a9566748c0c34168fafc88d2e3c1522fc7d1422266fa65b1beafbc82f45a88394d4ada16104b011e97f5e1396fa745d20bee185dc11447f4ad162e5c7ada48d8

Score

10^/10

masslogger collection rezer0 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.

Processes:

yara_rule

masslogger_log_file

yara_rule
masslogger_log_file

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

Processes:

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

ReZer0 packer 1 IoCs

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

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1760-58-0x0000000005870000-0x00000000059D6000-memory.dmp	rezer0

UPX packed file 1 IoCs

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

upx

Processes:

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

Processes:

PO.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation PO.exe
Loads dropped DLL 1 IoCs

Processes:

PO.exe

pid process

2028 PO.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	PO.exe

pid	process
2028	PO.exe

Accesses Microsoft Outlook profiles 1 TTPs 15 IoCs

collection

Email Collection

T1114

Processes:

PO.exe

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

PO.exe

description pid process target process

PID 1760 set thread context of 2028 1760 PO.exe PO.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

1232 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

PO.exe

pid process

2028 PO.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

PO.exe

pid process

2028 PO.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

PO.exe

description pid process

Token: SeDebugPrivilege 2028 PO.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

PO.exe

pid process

2028 PO.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1760 set thread context of 2028	1760	PO.exe	PO.exe

pid	process
1232	schtasks.exe

pid	process
2028	PO.exe

pid	process
2028	PO.exe

description	pid	process
Token: SeDebugPrivilege	2028	PO.exe

pid	process
2028	PO.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

PO.exe

description	pid	process	target process
PID 1760 wrote to memory of 1232	1760	PO.exe	schtasks.exe
PID 1760 wrote to memory of 1232	1760	PO.exe	schtasks.exe
PID 1760 wrote to memory of 1232	1760	PO.exe	schtasks.exe
PID 1760 wrote to memory of 1232	1760	PO.exe	schtasks.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe
PID 1760 wrote to memory of 2028	1760	PO.exe	PO.exe

outlook_office_path 1 IoCs

Processes:

PO.exe

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.exe

outlook_win_path 1 IoCs

Processes:

PO.exe

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.exe

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1760

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\secOYgd" /XML "C:\Users\Admin\AppData\Local\Temp\tmp845D.tmp"
2⤵
- Creates scheduled task(s)
PID:1232

C:\Users\Admin\AppData\Local\Temp\PO.exe
"C:\Users\Admin\AppData\Local\Temp\PO.exe"
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:2028

Network

MITRE ATT&CK Matrix ATT&CK 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

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp845D.tmp
Filesize
1KB

MD5
0e0e27f38cd0652db7f258edeae21337

SHA1
f17b1219b23ba415853234453f15462444482c69

SHA256
290fa9515da5da2ed0ca669aa3d1d89b92372fe7fc94e81f1248aafd70205349

SHA512
12c1a34964e781e5401fbd51d9080d76c559d1d4b2cfaca8ae7d8735612d5452e8d60d9d6c147b3e7f001526b67a8e13819b85b8e1e38edccf5f0eae6b071e8c

Download Submit
\Users\Admin\AppData\Local\Temp\Costura\8E3603ED8A0381E02887C1DBBE921340\32\sqlite.interop.dll
Filesize
594KB

MD5
e81aeac387c5db32b7f9b07d15e788e0

SHA1
829be6eaf1cb0d82b2ddfc98272e1087f4a7a7c3

SHA256
44f31f99f048bfc5195937353b5207332e455bcd5a722bcfd32cacfd93f60f06

SHA512
cc6a96325a01c50c059706a1f4156f109e502ef9c0b0f5de209d1f52e7cc973cebc027f57ed988e9d1b8fca62746b60ee7430d608de95cdd0e5ac3cb61fbe32e

Download Submit
memory/1232-59-0x0000000000000000-mapping.dmp

Download
memory/1760-54-0x0000000000810000-0x000000000099E000-memory.dmp

Filesize
1.6MB

Download
memory/1760-55-0x0000000075361000-0x0000000075363000-memory.dmp

Filesize
8KB

Download
memory/1760-56-0x0000000000420000-0x0000000000428000-memory.dmp

Filesize
32KB

Download
memory/1760-57-0x0000000005040000-0x00000000051CE000-memory.dmp

Filesize
1.6MB

Download
memory/1760-58-0x0000000005870000-0x00000000059D6000-memory.dmp

Filesize
1.4MB

Download
memory/2028-87-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-97-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-65-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-66-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-67-0x00000000005595AE-mapping.dmp

Download
memory/2028-69-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-71-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-73-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-75-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-77-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-79-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-81-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-83-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-85-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-62-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-91-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-89-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-93-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-95-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-64-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-99-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-101-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-103-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-105-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-107-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-109-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-111-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-113-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-115-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-117-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-119-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-121-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-123-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-61-0x0000000000400000-0x000000000055E000-memory.dmp

Filesize
1.4MB

Download
memory/2028-632-0x0000000000570000-0x00000000005B4000-memory.dmp

Filesize
272KB

Download
memory/2028-633-0x0000000006710000-0x00000000067A0000-memory.dmp

Filesize
576KB

Download
memory/2028-634-0x0000000005A60000-0x0000000005AC0000-memory.dmp

Filesize
384KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads