masslogger | bd99f6b970cc52ee725dd1b734a440243655a3fbc1e2304a665b29d41477c25b

General

Target

Mehmet_inquiry_00382392_176372.pdf.exe
Size

1.3MB
MD5

d13df375594402f6b205f37d23a4fddc
SHA1

fdec6711f508bb2277f84cb60e8e2bee2353f141
SHA256

bd99f6b970cc52ee725dd1b734a440243655a3fbc1e2304a665b29d41477c25b
SHA512

e3dad4302fe2161e4dd9a0111565228fab5aff6abc9e7603085520a2604dec9044dce1c283b78d5b9d5536e8812b6ecfe5b0b4c5c013ecd7b6f17430a186ceea

Score

10^/10

spyware stealer masslogger

Malware Config

Signatures

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

MassLogger Main Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3980-11-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger
behavioral2/memory/3980-12-0x000000000048198E-mapping.dmp	family_masslogger

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-1-5-21-1400429095-533421673-2598934218-1000\Control Panel\International\Geo\Nation	Mehmet_inquiry_00382392_176372.pdf.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware

Data from Local System
T1005

Credentials in Files
T1081

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
13	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3952 set thread context of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\ServiceProfiles\LocalService\winhttp\cachev3.dat	svchost.exe

Modifies data under HKEY_USERS 5 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad	svchost.exe
Key created	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionReason = "1"	svchost.exe
Set value (data)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecisionTime = ace41c9b117dd601	svchost.exe
Set value (int)	\REGISTRY\USER\S-1-5-19\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Wpad\0e-3e-6f-2c-c8-c7\WpadDecision = "0"	svchost.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3980	Mehmet_inquiry_00382392_176372.pdf.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3980	Mehmet_inquiry_00382392_176372.pdf.exe
3980	Mehmet_inquiry_00382392_176372.pdf.exe
3980	Mehmet_inquiry_00382392_176372.pdf.exe
3980	Mehmet_inquiry_00382392_176372.pdf.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeShutdownPrivilege	1560	svchost.exe
Token: SeCreatePagefilePrivilege	1560	svchost.exe
Token: SeDebugPrivilege	3980	Mehmet_inquiry_00382392_176372.pdf.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3980	Mehmet_inquiry_00382392_176372.pdf.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75
PID 3952 wrote to memory of 3980	3952	Mehmet_inquiry_00382392_176372.pdf.exe	75

C:\Users\Admin\AppData\Local\Temp\Mehmet_inquiry_00382392_176372.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\Mehmet_inquiry_00382392_176372.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3952
- C:\Users\Admin\AppData\Local\Temp\Mehmet_inquiry_00382392_176372.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\Mehmet_inquiry_00382392_176372.pdf.exe"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:3980

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k LocalService -s WinHttpAutoProxySvc
1⤵
- Drops file in Windows directory
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:1560

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/3952-0-0x0000000073270000-0x000000007395E000-memory.dmp

Filesize
6.9MB

Download
memory/3952-1-0x0000000000920000-0x0000000000921000-memory.dmp

Filesize
4KB

Download
memory/3952-3-0x0000000005280000-0x0000000005281000-memory.dmp

Filesize
4KB

Download
memory/3952-4-0x0000000005930000-0x0000000005931000-memory.dmp

Filesize
4KB

Download
memory/3952-5-0x0000000005430000-0x0000000005431000-memory.dmp

Filesize
4KB

Download
memory/3952-6-0x0000000005320000-0x0000000005321000-memory.dmp

Filesize
4KB

Download
memory/3952-7-0x0000000005590000-0x0000000005591000-memory.dmp

Filesize
4KB

Download
memory/3952-8-0x0000000005920000-0x000000000592B000-memory.dmp

Filesize
44KB

Download
memory/3952-9-0x00000000067A0000-0x0000000006857000-memory.dmp

Filesize
732KB

Download
memory/3952-10-0x00000000068E0000-0x0000000006972000-memory.dmp

Filesize
584KB

Download
memory/3980-11-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/3980-13-0x0000000073270000-0x000000007395E000-memory.dmp

Filesize
6.9MB

Download
memory/3980-18-0x00000000062F0000-0x00000000062F1000-memory.dmp

Filesize
4KB

Download
memory/3980-19-0x0000000006C30000-0x0000000006C31000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing