masslogger | 050c2d432568b83f75b1203ecea8e2a305408bc4e296161edc1ec8f381a0241f

Analysis

max time kernel
123s
max time network
137s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 12:30

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General

Target

REQUEST_.scr
Size

858KB
MD5

ee07a20a60dd6c53958568469f4e6bec
SHA1

966cbcfcb101e2d6a70b940de20376ba2f6d7164
SHA256

8b701ead5af587161656419272dfa0fca1087ce8f5603ad1e6f70332f9a1fb04
SHA512

668c2d5a98fcca6fb18d599a17415100a2153fe06130532308012b5f4e12afbe08e6bc0f8dac249fac0f85d299800032a7971176eebf7a44ffcb74216c835bfa

Score

10^/10

masslogger ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\2EF8342664\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 10 Pro64bit CPU: Intel Core Processor (Broadwell) GPU: Microsoft Basic Display Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 3:11:57 PM MassLogger Started: 5/21/2022 3:11:33 PM Interval: 5 hour MassLogger Process: C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.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 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-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	REQUEST_.scr

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
24	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3888 set thread context of 4452	3888	REQUEST_.scr	86

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
4628	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4452	RegSvcs.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
3888	REQUEST_.scr
4452	RegSvcs.exe
4452	RegSvcs.exe
2968	powershell.exe
2968	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3888	REQUEST_.scr
Token: SeDebugPrivilege	4452	RegSvcs.exe
Token: SeDebugPrivilege	2968	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4452	RegSvcs.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3888 wrote to memory of 4628	3888	REQUEST_.scr	84
PID 3888 wrote to memory of 4628	3888	REQUEST_.scr	84
PID 3888 wrote to memory of 4628	3888	REQUEST_.scr	84
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 3888 wrote to memory of 4452	3888	REQUEST_.scr	86
PID 4452 wrote to memory of 3964	4452	RegSvcs.exe	87
PID 4452 wrote to memory of 3964	4452	RegSvcs.exe	87
PID 4452 wrote to memory of 3964	4452	RegSvcs.exe	87
PID 3964 wrote to memory of 2968	3964	cmd.exe	89
PID 3964 wrote to memory of 2968	3964	cmd.exe	89
PID 3964 wrote to memory of 2968	3964	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\REQUEST_.scr
"C:\Users\Admin\AppData\Local\Temp\REQUEST_.scr" /S
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3888
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\jXeioFCt" /XML "C:\Users\Admin\AppData\Local\Temp\tmp256A.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4628
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4452
- - C:\Windows\SysWOW64\cmd.exe
    "cmd" /c start /b powershell Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3964
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell Add-MpPreference -ExclusionPath 'C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe'
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2968

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

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

C:\Users\Admin\AppData\Local\Temp\tmp256A.tmp

Filesize
1KB

MD5
c3e1ac399c7f98857ca9068b3f48fc83

SHA1
f8d860c4ca81431d5a4df4f6e61227439adc7a4a

SHA256
f168f034b4395bc85c1a4c7841e100a5db77cdca894fb4f1194aa60fb8b8584c

SHA512
b9eb48d840d6e589d62af59b5d94174821112ad0bc9ab5e49052d6ff303bd83ebb0bb05d711d6167646df74be357bbfc86f60312aa6f8121b8a8cde74156b512

Download Submit
memory/2968-660-0x0000000006DC0000-0x0000000006DCA000-memory.dmp

Filesize
40KB

Download
memory/2968-654-0x0000000005A40000-0x0000000005A5E000-memory.dmp

Filesize
120KB

Download
memory/2968-658-0x00000000073A0000-0x0000000007A1A000-memory.dmp

Filesize
6.5MB

Download
memory/2968-659-0x0000000006D60000-0x0000000006D7A000-memory.dmp

Filesize
104KB

Download
memory/2968-664-0x0000000007090000-0x0000000007098000-memory.dmp

Filesize
32KB

Download
memory/2968-650-0x0000000002160000-0x0000000002196000-memory.dmp

Filesize
216KB

Download
memory/2968-663-0x00000000070B0000-0x00000000070CA000-memory.dmp

Filesize
104KB

Download
memory/2968-662-0x0000000005F50000-0x0000000005F5E000-memory.dmp

Filesize
56KB

Download
memory/2968-657-0x0000000005FF0000-0x000000000600E000-memory.dmp

Filesize
120KB

Download
memory/2968-651-0x0000000004D70000-0x0000000005398000-memory.dmp

Filesize
6.2MB

Download
memory/2968-652-0x0000000004AB0000-0x0000000004AD2000-memory.dmp

Filesize
136KB

Download
memory/2968-661-0x0000000006FF0000-0x0000000007086000-memory.dmp

Filesize
600KB

Download
memory/2968-653-0x0000000004C50000-0x0000000004CB6000-memory.dmp

Filesize
408KB

Download
memory/2968-656-0x000000006FF30000-0x000000006FF7C000-memory.dmp

Filesize
304KB

Download
memory/2968-655-0x0000000006C10000-0x0000000006C42000-memory.dmp

Filesize
200KB

Download
memory/3888-132-0x0000000004CD0000-0x0000000004D62000-memory.dmp

Filesize
584KB

Download
memory/3888-130-0x0000000000220000-0x00000000002FC000-memory.dmp

Filesize
880KB

Download
memory/3888-133-0x0000000004CB0000-0x0000000004CBA000-memory.dmp

Filesize
40KB

Download
memory/3888-131-0x0000000005370000-0x0000000005914000-memory.dmp

Filesize
5.6MB

Download
memory/3888-134-0x0000000008490000-0x000000000852C000-memory.dmp

Filesize
624KB

Download
memory/4452-150-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-647-0x0000000006170000-0x00000000061D6000-memory.dmp

Filesize
408KB

Download
memory/4452-176-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-178-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-174-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-180-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-184-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-182-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-172-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-188-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-186-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-194-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-196-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-192-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-198-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-200-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-190-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-170-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-168-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-166-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-164-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-162-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-160-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-158-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-156-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-154-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-152-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-148-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-146-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-144-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-142-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-140-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/4452-138-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download