masslogger | 8bce24cd3a61fdc8020922dcb840a8d107fdf2f096e3ed51ec24ba26f1876d97

General

Target

invoice#09090999-Pdf.exe
Size

860KB
MD5

e50d7a2c0d596398300327210298636b
SHA1

2256f0f18037c33654fab975495851c071fa5014
SHA256

5756414989427044652d411548d7523b88c74449101d277d0b227a00c8526bc3
SHA512

e874430d81ceb40c048df5bc9c7a4896bc09cd014f928243826b168fa67fe5f9d1c0ec78d7dd16aca168c4638fbc995829445798896bde9896c6430a0d55488f

Score

10^/10

masslogger ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:16:55 AM MassLogger Started: 5/21/2022 3:16:22 AM Interval: 1 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.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 log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file
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

yara_rule
masslogger_log_file

flow	ioc
4	api.ipify.org

Maps connected drives based on registry 3 TTPs 2 IoCs

Disk information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

invoice#09090999-Pdf.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	invoice#09090999-Pdf.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0	invoice#09090999-Pdf.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

invoice#09090999-Pdf.exe

description pid process target process

PID 1708 set thread context of 1640 1708 invoice#09090999-Pdf.exe InstallUtil.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

InstallUtil.exe

pid process

1640 InstallUtil.exe
Suspicious behavior: MapViewOfSection 1 IoCs

Processes:

invoice#09090999-Pdf.exe

pid process

1708 invoice#09090999-Pdf.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

InstallUtil.exe

description pid process

Token: SeDebugPrivilege 1640 InstallUtil.exe

description	pid	process	target process
PID 1708 set thread context of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe

pid	process
1640	InstallUtil.exe

pid	process
1708	invoice#09090999-Pdf.exe

description	pid	process
Token: SeDebugPrivilege	1640	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

invoice#09090999-Pdf.exe

description	pid	process	target process
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe
PID 1708 wrote to memory of 1640	1708	invoice#09090999-Pdf.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\invoice#09090999-Pdf.exe
"C:\Users\Admin\AppData\Local\Temp\invoice#09090999-Pdf.exe"
1⤵
- Maps connected drives based on registry
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1708

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
"C:\Windows\\\\Microsoft.NET\\\\Framework\\\\v4.0.30319\\\\InstallUtil.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1640

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1640-57-0x00000000004A2DAE-mapping.dmp

Download
memory/1640-59-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1640-60-0x00000000763E1000-0x00000000763E3000-memory.dmp

Filesize
8KB

Download
memory/1640-61-0x0000000000C75000-0x0000000000C86000-memory.dmp

Filesize
68KB

Download
memory/1708-54-0x0000000000DF0000-0x0000000000ECC000-memory.dmp

Filesize
880KB

Download
memory/1708-55-0x0000000004D30000-0x0000000004E12000-memory.dmp

Filesize
904KB

Download
memory/1708-56-0x0000000004960000-0x0000000004A0C000-memory.dmp

Filesize
688KB

Download
memory/1708-58-0x0000000000490000-0x0000000000493000-memory.dmp

Filesize
12KB

Download

Analysis

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