masslogger | f01fa521086018767cf288a719022222f579bf5a00fd2e85089cae82fad2d798

Analysis

max time kernel
92s
max time network
151s
platform
windows7_x64
resource
win7-20220414-en
submitted
21/05/2022, 12:13

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General

Target

SwiftSDM.scan.pdf..exe
Size

745KB
MD5

b881533b7b297c09802c0b74adbd2936
SHA1

23e8bcb9a029df6f8ee460eec6ac600459d6eed3
SHA256

0ceca38c78e5862c0d87d4c0dfacfb25fef8310e502415721c35331f1315cc04
SHA512

caa530f0fff257b66b2ae107a8ffdd2df910a24c640559965491e2281a99949aae0761a537ee7bd349b4154f03f27d991435270b09cdb97df0d02e29e8ac4497

Score

10^/10

masslogger persistence 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: 154.61.71.50 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 2:26:36 PM MassLogger Started: 5/21/2022 2:26:25 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

resource	yara_rule
behavioral1/memory/1700-64-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-65-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-66-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-67-0x00000000004A373E-mapping.dmp	family_masslogger
behavioral1/memory/1700-69-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-71-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-74-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-76-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-78-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-80-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-82-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-84-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-86-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-88-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-90-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-92-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-94-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-96-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-98-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-100-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-102-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-104-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-108-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-106-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-110-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-112-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-114-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-116-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-118-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-120-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-122-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1700-124-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\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

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2277218442-1199762539-2004043321-1000\Software\Microsoft\Windows\CurrentVersion\Run\chrome = "\"C:\\Users\\Admin\\chrome.exe\""	SwiftSDM.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.

flow	ioc
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1092 set thread context of 1700	1092	SwiftSDM.scan.pdf..exe	30

Suspicious behavior: EnumeratesProcesses 16 IoCs

pid	Process
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1092	SwiftSDM.scan.pdf..exe
1700	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1092	SwiftSDM.scan.pdf..exe
Token: SeDebugPrivilege	1700	RegAsm.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 1352	1092	SwiftSDM.scan.pdf..exe	29
PID 1092 wrote to memory of 1352	1092	SwiftSDM.scan.pdf..exe	29
PID 1092 wrote to memory of 1352	1092	SwiftSDM.scan.pdf..exe	29
PID 1092 wrote to memory of 1352	1092	SwiftSDM.scan.pdf..exe	29
PID 1092 wrote to memory of 1352	1092	SwiftSDM.scan.pdf..exe	29
PID 1092 wrote to memory of 1352	1092	SwiftSDM.scan.pdf..exe	29
PID 1092 wrote to memory of 1352	1092	SwiftSDM.scan.pdf..exe	29
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30
PID 1092 wrote to memory of 1700	1092	SwiftSDM.scan.pdf..exe	30

C:\Users\Admin\AppData\Local\Temp\SwiftSDM.scan.pdf..exe
"C:\Users\Admin\AppData\Local\Temp\SwiftSDM.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:1092
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1352
- 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:1700

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1092-54-0x0000000000F00000-0x0000000000FC0000-memory.dmp

Filesize
768KB

Download
memory/1092-55-0x00000000765C1000-0x00000000765C3000-memory.dmp

Filesize
8KB

Download
memory/1092-56-0x0000000000390000-0x0000000000398000-memory.dmp

Filesize
32KB

Download
memory/1092-57-0x0000000004560000-0x000000000460C000-memory.dmp

Filesize
688KB

Download
memory/1092-58-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download
memory/1092-59-0x0000000000410000-0x0000000000426000-memory.dmp

Filesize
88KB

Download
memory/1092-60-0x00000000005F0000-0x0000000000602000-memory.dmp

Filesize
72KB

Download
memory/1700-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-65-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-66-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-69-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-71-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-74-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-76-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-78-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-80-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-82-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-84-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-86-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-88-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-90-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-92-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-94-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-96-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-98-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-100-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-102-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-104-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-108-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-106-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-110-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-112-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-114-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-116-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-118-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-120-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-122-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-124-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1700-579-0x0000000004F05000-0x0000000004F16000-memory.dmp

Filesize
68KB

Download