masslogger | ca175c94eb00b4846925e068678e41edc91faf50950303699635ee3f0546683b

Analysis

max time kernel
141s
max time network
160s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 02:08

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General

Target

rfq Img docs892712.exe
Size

957KB
MD5

ffff0929aa619672f34a16a852e975c5
SHA1

dcb35d17e4df834d0d1d6666c3f06b082248c745
SHA256

c324d9dd65de8e5ad44795db94a24c3b2b3db5cdd88d5c35de386e039772a364
SHA512

f99331a74a77b9747c115b5677c249380f31470d069742c2c367a4cfe785ca7ad9fc76fbd8b5e4d32d814e619a03b120672c86e076937d078942314b208bdbd4

Score

10^/10

masslogger collection 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 32 IoCs

Processes:

resource	yara_rule
behavioral2/memory/5028-138-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-140-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-142-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-144-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-146-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-148-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-150-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-152-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-156-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-154-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-158-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-160-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-162-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-164-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-166-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-168-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-170-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-172-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-174-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-178-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-176-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-180-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-182-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-184-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-186-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-188-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-190-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-192-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-194-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-196-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-198-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral2/memory/5028-200-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger

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

Processes:

yara_rule

masslogger_log_file

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:

rfq Img docs892712.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	rfq Img docs892712.exe

Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs

collection

Email Collection

T1114

Processes:

MSBuild.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key opened	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	MSBuild.exe
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe
Key created	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

40 api.ipify.org
41 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

rfq Img docs892712.exe

description pid process target process

PID 1636 set thread context of 5028 1636 rfq Img docs892712.exe MSBuild.exe
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

Processes:

schtasks.exe

pid process

4532 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

MSBuild.exe

pid process

5028 MSBuild.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

MSBuild.exe

pid process

5028 MSBuild.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

MSBuild.exe

description pid process

Token: SeDebugPrivilege 5028 MSBuild.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

MSBuild.exe

pid process

5028 MSBuild.exe

flow	ioc
40	api.ipify.org
41	api.ipify.org

description	pid	process	target process
PID 1636 set thread context of 5028	1636	rfq Img docs892712.exe	MSBuild.exe

pid	process
4532	schtasks.exe

pid	process
5028	MSBuild.exe

pid	process
5028	MSBuild.exe

description	pid	process
Token: SeDebugPrivilege	5028	MSBuild.exe

pid	process
5028	MSBuild.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

rfq Img docs892712.exe

description	pid	process	target process
PID 1636 wrote to memory of 4532	1636	rfq Img docs892712.exe	schtasks.exe
PID 1636 wrote to memory of 4532	1636	rfq Img docs892712.exe	schtasks.exe
PID 1636 wrote to memory of 4532	1636	rfq Img docs892712.exe	schtasks.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe
PID 1636 wrote to memory of 5028	1636	rfq Img docs892712.exe	MSBuild.exe

outlook_office_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

outlook_win_path 1 IoCs

Processes:

MSBuild.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\rfq Img docs892712.exe
"C:\Users\Admin\AppData\Local\Temp\rfq Img docs892712.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1636
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\okFpWBEWz" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE3DD.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:4532
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  - 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:5028

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

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE3DD.tmp

Filesize
1KB

MD5
19fb46feaddac99c6ca1935251cd01ba

SHA1
4fbf21c85cf667946c9dbb5c66e5747947061044

SHA256
8dd8a44f49cc280a1f3e4e3fecd5c570b5a19713c3f5d18becb2806273da796d

SHA512
43d0495555d33bf71d00becd91d02b39a3e380446b55669ed6145e9cb4b42d4379d60365de62f9374390c37c3e7f5f3925aea96c41050005249b45f0559b106f

Download Submit
memory/1636-130-0x0000000000790000-0x0000000000886000-memory.dmp

Filesize
984KB

Download
memory/1636-131-0x0000000005840000-0x0000000005DE4000-memory.dmp

Filesize
5.6MB

Download
memory/1636-132-0x0000000005290000-0x0000000005322000-memory.dmp

Filesize
584KB

Download
memory/1636-133-0x0000000005220000-0x000000000522A000-memory.dmp

Filesize
40KB

Download
memory/1636-134-0x0000000008D40000-0x0000000008DDC000-memory.dmp

Filesize
624KB

Download
memory/4532-135-0x0000000000000000-mapping.dmp

Download
memory/5028-162-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-170-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-140-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-142-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-144-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-146-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-148-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-150-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-152-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-156-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-154-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-158-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-160-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-137-0x0000000000000000-mapping.dmp

Download
memory/5028-164-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-166-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-168-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-138-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-172-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-174-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-178-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-176-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-180-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-182-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-184-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-186-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-188-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-190-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-192-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-194-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-196-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-198-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-200-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/5028-639-0x0000000005CC0000-0x0000000005D26000-memory.dmp

Filesize
408KB

Download
memory/5028-640-0x0000000007210000-0x0000000007260000-memory.dmp

Filesize
320KB

Download