masslogger | 55247605abdc8ef6f7ad3bb5eed601a6b5da5205785ac51a9407f0d1dcde9b6d

Analysis

max time kernel
62s
max time network
132s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
25-07-2022 16:54

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General

Target

LIST OF PRODUCTS NEEDED.exe
Size

1.1MB
MD5

af517807c4b6160d07314ba228f333de
SHA1

9020081ebc00595e57d5d40a742682f4de0b7671
SHA256

e97151ce51e9463bd45ad41571141614fc0ffc8a8cbf2c74f36c20028a769f41
SHA512

8647a9336ff7e33b60c7f9903d9214de5842bc195f4460870f9dda8205397ef9aaddf0a371ceb90b280e9b26017e53e0c10422844ce0f30fda14b7dccc310b00

Score

10^/10

masslogger spyware stealer

Malware Config

Signatures

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

MassLogger Main payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/1100-133-0x0000000000400000-0x000000000048C000-memory.dmp	family_masslogger

Suspicious use of SetThreadContext 1 IoCs

Processes:

LIST OF PRODUCTS NEEDED.exe

description pid process target process

PID 4228 set thread context of 1100 4228 LIST OF PRODUCTS NEEDED.exe RegSvcs.exe
Drops file in Windows directory 1 IoCs

Processes:

dw20.exe

description ioc process

File created C:\Windows\AppCompat\Programs\Amcache.hve.tmp dw20.exe

description	pid	process	target process
PID 4228 set thread context of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe

description	ioc	process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	dw20.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

Processes:

dw20.exe

description	pid	process
Token: SeRestorePrivilege	1652	dw20.exe
Token: SeBackupPrivilege	1652	dw20.exe
Token: SeBackupPrivilege	1652	dw20.exe
Token: SeBackupPrivilege	1652	dw20.exe
Token: SeBackupPrivilege	1652	dw20.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

LIST OF PRODUCTS NEEDED.exeRegSvcs.exe

description	pid	process	target process
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 4228 wrote to memory of 1100	4228	LIST OF PRODUCTS NEEDED.exe	RegSvcs.exe
PID 1100 wrote to memory of 1652	1100	RegSvcs.exe	dw20.exe
PID 1100 wrote to memory of 1652	1100	RegSvcs.exe	dw20.exe
PID 1100 wrote to memory of 1652	1100	RegSvcs.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\LIST OF PRODUCTS NEEDED.exe
"C:\Users\Admin\AppData\Local\Temp\LIST OF PRODUCTS NEEDED.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4228

C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
"{path}"
2⤵
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 760
3⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:1652

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1100-132-0x0000000000000000-mapping.dmp

Download
memory/1100-133-0x0000000000400000-0x000000000048C000-memory.dmp

Filesize
560KB

Download
memory/1100-136-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/1100-137-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/1652-134-0x0000000000000000-mapping.dmp

Download
memory/4228-130-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/4228-131-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download
memory/4228-135-0x0000000075520000-0x0000000075AD1000-memory.dmp

Filesize
5.7MB

Download