masslogger | 2a6edd2356faca41db31e6f58e423fcf9b82272af8cf8d15dfe542585fc4c710

General

Target

SwiftBNF.scan.pdf..exe
Size

732KB
MD5

c30512d832ae5f5bba0b1f7a391a6e54
SHA1

96c98d60726a64e7e934530def145d4e2f8e46f3
SHA256

59ab0c3f8318f555ee1316fa382e9947c79e4ea03f321ebd282ed08012b8139a
SHA512

c06f4bed92791bff10518c8db36aebb8f86c6ed9d3e2e141bc4fafbe92784494f4bbff6ab1edb63d4c2f682d36fb43f089ddb8a79490721781d15cbe7e9bf337

Score

10^/10

masslogger persistence ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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 12:50:36 PM MassLogger Started: 5/21/2022 12:50:25 PM Interval: 1 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.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 Main Payload 32 IoCs

Processes:

resource	yara_rule
behavioral1/memory/388-64-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-65-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-66-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-67-0x00000000004A373E-mapping.dmp	family_masslogger
behavioral1/memory/388-69-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-71-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-74-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-76-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-78-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-82-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-80-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-84-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-86-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-88-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-90-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-92-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-94-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-96-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-98-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-100-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-102-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-104-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-106-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-108-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-110-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-112-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-114-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-116-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-118-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-120-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-122-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/388-124-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs
Detects a log file produced by MassLogger.

Processes:

yara_rule

masslogger_log_file
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:

RegAsm.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation RegAsm.exe

yara_rule
masslogger_log_file

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	RegAsm.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

SwiftBNF.scan.pdf..exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows\CurrentVersion\Run\chrome = "\"C:\\Users\\Admin\\chrome.exe\""	SwiftBNF.scan.pdf..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:

SwiftBNF.scan.pdf..exe

description pid process target process

PID 1100 set thread context of 388 1100 SwiftBNF.scan.pdf..exe RegAsm.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1100 set thread context of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 14 IoCs

Processes:

SwiftBNF.scan.pdf..exeRegAsm.exe

pid	process
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
1100	SwiftBNF.scan.pdf..exe
388	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

SwiftBNF.scan.pdf..exeRegAsm.exe

description pid process

Token: SeDebugPrivilege 1100 SwiftBNF.scan.pdf..exe
Token: SeDebugPrivilege 388 RegAsm.exe

description	pid	process
Token: SeDebugPrivilege	1100	SwiftBNF.scan.pdf..exe
Token: SeDebugPrivilege	388	RegAsm.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

SwiftBNF.scan.pdf..exe

description	pid	process	target process
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe
PID 1100 wrote to memory of 388	1100	SwiftBNF.scan.pdf..exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\SwiftBNF.scan.pdf..exe
"C:\Users\Admin\AppData\Local\Temp\SwiftBNF.scan.pdf..exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
2⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:388

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/388-84-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-88-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-579-0x0000000000895000-0x00000000008A6000-memory.dmp

Filesize
68KB

Download
memory/388-124-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-122-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-120-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-86-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-65-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-66-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-118-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-69-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-71-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-74-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-76-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-78-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-82-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-80-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-67-0x00000000004A373E-mapping.dmp

Download
memory/388-116-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-114-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-90-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-92-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-94-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-96-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-98-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-100-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-102-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-104-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-106-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-108-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-110-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/388-112-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1100-56-0x0000000000480000-0x0000000000488000-memory.dmp

Filesize
32KB

Download
memory/1100-55-0x0000000074B51000-0x0000000074B53000-memory.dmp

Filesize
8KB

Download
memory/1100-54-0x00000000002F0000-0x00000000003AE000-memory.dmp

Filesize
760KB

Download
memory/1100-60-0x0000000001FF0000-0x0000000002002000-memory.dmp

Filesize
72KB

Download
memory/1100-59-0x00000000004D0000-0x00000000004E6000-memory.dmp

Filesize
88KB

Download
memory/1100-58-0x00000000004C0000-0x00000000004D6000-memory.dmp

Filesize
88KB

Download
memory/1100-57-0x00000000042C0000-0x000000000436A000-memory.dmp

Filesize
680KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads