masslogger | 7e8874cfbd36629e9bec7aeb253821f511e3a1296e8da614eeb96642d7257a65

General

Target

TILOCRYP.exe
Size

1.1MB
MD5

204bdadf1189b3224b4ddc9317ae1559
SHA1

27eafcc0591dc3742718a24f59aacd80a7dd3b47
SHA256

3f83c090819bc1dd8a9c1db3588b51ecd839bf0ca85a21f552c4346abe09efdc
SHA512

b73ebdc5a67acfa1b78ca1a18c2b74806034ac00e5d8eb6f35bb24e5e4106ee575886d70382c68be84f3b5f975a6a1b66a3a37c09a3492073bd318c99fbcca61

Score

10^/10

masslogger collection persistence 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 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3368-130-0x00000000000A0000-0x00000000001C8000-memory.dmp	family_masslogger
C:\Users\Admin\Documents\app.exe	family_masslogger
C:\Users\Admin\Documents\app.exe	family_masslogger
behavioral2/memory/1844-139-0x0000000000400000-0x0000000000486000-memory.dmp	family_masslogger

Executes dropped EXE 2 IoCs

Processes:

app.exeRegAsm.exe

pid process

1680 app.exe
1844 RegAsm.exe

pid	process
1680	app.exe
1844	RegAsm.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

TILOCRYP.exeRegAsm.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	TILOCRYP.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	RegAsm.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 42 IoCs

collection

Email Collection

T1114

Processes:

RegAsm.exe

description	ioc	process
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\18.0\Outlook\Profiles\Outlook	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook	RegAsm.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

reg.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\app = "C:\\Windows\\system32\\pcalua.exe -a C:\\Users\\Admin\\Documents\\app.exe"	reg.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

37 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

app.exe

description pid process target process

PID 1680 set thread context of 1844 1680 app.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

RegAsm.exe

pid process

1844 RegAsm.exe

flow	ioc
37	api.ipify.org

description	pid	process	target process
PID 1680 set thread context of 1844	1680	app.exe	RegAsm.exe

pid	process
1844	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

Processes:

TILOCRYP.exeapp.exeRegAsm.exe

pid	process
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
3368	TILOCRYP.exe
1680	app.exe
1680	app.exe
1680	app.exe
1844	RegAsm.exe
1844	RegAsm.exe
1844	RegAsm.exe
1844	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

TILOCRYP.exeapp.exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 3368 TILOCRYP.exe
Token: SeDebugPrivilege 1680 app.exe
Token: SeDebugPrivilege 1844 RegAsm.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

RegAsm.exe

pid process

1844 RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	3368	TILOCRYP.exe
Token: SeDebugPrivilege	1680	app.exe
Token: SeDebugPrivilege	1844	RegAsm.exe

pid	process
1844	RegAsm.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

TILOCRYP.execmd.exeapp.exe

description	pid	process	target process
PID 3368 wrote to memory of 2180	3368	TILOCRYP.exe	cmd.exe
PID 3368 wrote to memory of 2180	3368	TILOCRYP.exe	cmd.exe
PID 3368 wrote to memory of 2180	3368	TILOCRYP.exe	cmd.exe
PID 2180 wrote to memory of 3240	2180	cmd.exe	reg.exe
PID 2180 wrote to memory of 3240	2180	cmd.exe	reg.exe
PID 2180 wrote to memory of 3240	2180	cmd.exe	reg.exe
PID 3368 wrote to memory of 1680	3368	TILOCRYP.exe	app.exe
PID 3368 wrote to memory of 1680	3368	TILOCRYP.exe	app.exe
PID 3368 wrote to memory of 1680	3368	TILOCRYP.exe	app.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe
PID 1680 wrote to memory of 1844	1680	app.exe	RegAsm.exe

outlook_office_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

outlook_win_path 1 IoCs

Processes:

RegAsm.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\TILOCRYP.exe
"C:\Users\Admin\AppData\Local\Temp\TILOCRYP.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3368

C:\Windows\SysWOW64\cmd.exe
"cmd.exe" /c REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v app /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Documents\app.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2180

C:\Windows\SysWOW64\reg.exe
REG ADD HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run /f /v app /t REG_SZ /d C:\Windows\system32\pcalua.exe" -a C:\Users\Admin\Documents\app.exe"
3⤵
- Adds Run key to start application
PID:3240

C:\Users\Admin\Documents\app.exe
"C:\Users\Admin\Documents\app.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1680

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe
"C:\Users\Admin\AppData\Local\Temp\RegAsm.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- 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:1844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
0d5df43af2916f47d00c1573797c1a13

SHA1
230ab5559e806574d26b4c20847c368ed55483b0

SHA256
c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc

SHA512
f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegAsm.exe

Filesize
63KB

MD5
0d5df43af2916f47d00c1573797c1a13

SHA1
230ab5559e806574d26b4c20847c368ed55483b0

SHA256
c066aee7aa3aa83f763ebc5541daa266ed6c648fbffcde0d836a13b221bb2adc

SHA512
f96cf9e1890746b12daf839a6d0f16f062b72c1b8a40439f96583f242980f10f867720232a6fa0f7d4d7ac0a7a6143981a5a130d6417ea98b181447134c7cfe2

Download Submit
C:\Users\Admin\Documents\app.exe

Filesize
1.1MB

MD5
204bdadf1189b3224b4ddc9317ae1559

SHA1
27eafcc0591dc3742718a24f59aacd80a7dd3b47

SHA256
3f83c090819bc1dd8a9c1db3588b51ecd839bf0ca85a21f552c4346abe09efdc

SHA512
b73ebdc5a67acfa1b78ca1a18c2b74806034ac00e5d8eb6f35bb24e5e4106ee575886d70382c68be84f3b5f975a6a1b66a3a37c09a3492073bd318c99fbcca61

Download Submit
C:\Users\Admin\Documents\app.exe

Filesize
1.1MB

MD5
204bdadf1189b3224b4ddc9317ae1559

SHA1
27eafcc0591dc3742718a24f59aacd80a7dd3b47

SHA256
3f83c090819bc1dd8a9c1db3588b51ecd839bf0ca85a21f552c4346abe09efdc

SHA512
b73ebdc5a67acfa1b78ca1a18c2b74806034ac00e5d8eb6f35bb24e5e4106ee575886d70382c68be84f3b5f975a6a1b66a3a37c09a3492073bd318c99fbcca61

Download Submit
memory/1680-135-0x0000000000000000-mapping.dmp

Download
memory/1844-142-0x0000000005BE0000-0x0000000005C46000-memory.dmp

Filesize
408KB

Download
memory/1844-138-0x0000000000000000-mapping.dmp

Download
memory/1844-139-0x0000000000400000-0x0000000000486000-memory.dmp

Filesize
536KB

Download
memory/1844-143-0x0000000006AB0000-0x0000000006B00000-memory.dmp

Filesize
320KB

Download
memory/1844-144-0x0000000006A80000-0x0000000006A8A000-memory.dmp

Filesize
40KB

Download
memory/1844-145-0x0000000006CB0000-0x0000000006D4C000-memory.dmp

Filesize
624KB

Download
memory/2180-133-0x0000000000000000-mapping.dmp

Download
memory/3240-134-0x0000000000000000-mapping.dmp

Download
memory/3368-132-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/3368-131-0x0000000005820000-0x0000000005DC4000-memory.dmp

Filesize
5.6MB

Download
memory/3368-130-0x00000000000A0000-0x00000000001C8000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads