masslogger | a9d59ec565a4366c28f42e00f76f2c0d795be7be6aa937e64ed3feab5328174b

General

Target

Dekont.exe
Size

1.0MB
MD5

1ba7ee7b1f0e03c2b63e828b4eb1158e
SHA1

bca0140b2bac77017b47676845ca97144c230ffa
SHA256

ac42965215afb055c4135cc87288be3f2aaff848972634fbaed4c365e112af43
SHA512

5d61af74c8b3ae2e307a1909b7d774f72d16c3db66e9f865b239d4ea1b4d743b205fb2239be7608e705606275c94eb96766d278bfc8079257a5b3dcb9309650b

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

<|| v2.2.0.0 ||> User Name: Admin IP: 154.61.71.51 Location: United States Windows OS: Microsoft Windows 7 Ultimate 64bit Windows Serial Key: D4F6K-QK3RD-TMVMJ-BBMRX-3MBMV CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 12:31:23 PM MassLogger Started: 5/21/2022 12:31:16 PM Interval: 1 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\Dekont.exe MassLogger Melt: true MassLogger Exit after delivery: false As Administrator: True Processes: <|| WD Exclusion ||> Disabled <|| Binder ||> Disabled <|| Downloader ||> Disabled <|| USB Spread ||> Disabled <|| Window Searcher ||> Disabled <|| Bot Killer ||> Disabled <|| Search And Upload ||> Disabled <|| Telegram Desktop ||> Not Installed <|| Pidgin ||> Not Installed <|| FileZilla ||> Not Installed <|| Discord Tokken ||> Not Installed <|| NordVPN ||> Not Installed <|| Outlook ||> Not Installed <|| FoxMail ||> Not Installed <|| Thunderbird ||> Not Installed <|| FireFox ||> Not Found <|| QQ Browser ||> Not Installed <|| Chromium Recovery ||> Not Installed or Not Found <|| Keylogger And Clipboard ||> NA

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.

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:

Dekont.exe

description ioc process

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

Processes:

powershell.exe

pid process

1452 powershell.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

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	Dekont.exe

pid	process
1452	powershell.exe

Accesses Microsoft Outlook profiles 1 TTPs 35 IoCs

collection

Email Collection

T1114

Processes:

Dekont.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	Dekont.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook	Dekont.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	Dekont.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\19.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\18.0\Outlook\Profiles\Outlook	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook	Dekont.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\17.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.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:

Dekont.exe

description pid process target process

PID 1336 set thread context of 988 1336 Dekont.exe Dekont.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

Dekont.exe

pid process

988 Dekont.exe
Suspicious behavior: EnumeratesProcesses 7 IoCs

Processes:

Dekont.exePowershell.exeDekont.exepowershell.exe

pid process

1336 Dekont.exe
1336 Dekont.exe
1336 Dekont.exe
2020 Powershell.exe
988 Dekont.exe
988 Dekont.exe
1452 powershell.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1336 set thread context of 988	1336	Dekont.exe	Dekont.exe

pid	process
988	Dekont.exe

pid	process
1336	Dekont.exe
1336	Dekont.exe
1336	Dekont.exe
2020	Powershell.exe
988	Dekont.exe
988	Dekont.exe
1452	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

Dekont.exePowershell.exeDekont.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1336	Dekont.exe
Token: SeDebugPrivilege	2020	Powershell.exe
Token: SeDebugPrivilege	988	Dekont.exe
Token: SeDebugPrivilege	1452	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Dekont.exe

pid process

988 Dekont.exe

pid	process
988	Dekont.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

Dekont.exeDekont.execmd.exe

description	pid	process	target process
PID 1336 wrote to memory of 1912	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 1912	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 1912	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 1912	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 988	1336	Dekont.exe	Dekont.exe
PID 1336 wrote to memory of 2020	1336	Dekont.exe	Powershell.exe
PID 1336 wrote to memory of 2020	1336	Dekont.exe	Powershell.exe
PID 1336 wrote to memory of 2020	1336	Dekont.exe	Powershell.exe
PID 1336 wrote to memory of 2020	1336	Dekont.exe	Powershell.exe
PID 988 wrote to memory of 1888	988	Dekont.exe	cmd.exe
PID 988 wrote to memory of 1888	988	Dekont.exe	cmd.exe
PID 988 wrote to memory of 1888	988	Dekont.exe	cmd.exe
PID 988 wrote to memory of 1888	988	Dekont.exe	cmd.exe
PID 1888 wrote to memory of 1452	1888	cmd.exe	powershell.exe
PID 1888 wrote to memory of 1452	1888	cmd.exe	powershell.exe
PID 1888 wrote to memory of 1452	1888	cmd.exe	powershell.exe
PID 1888 wrote to memory of 1452	1888	cmd.exe	powershell.exe

outlook_office_path 1 IoCs

Processes:

Dekont.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\20.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe

outlook_win_path 1 IoCs

Processes:

Dekont.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	Dekont.exe

C:\Users\Admin\AppData\Local\Temp\Dekont.exe
"C:\Users\Admin\AppData\Local\Temp\Dekont.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1336

C:\Users\Admin\AppData\Local\Temp\Dekont.exe
"C:\Users\Admin\AppData\Local\Temp\Dekont.exe"
2⤵
PID:1912

C:\Users\Admin\AppData\Local\Temp\Dekont.exe
"C:\Users\Admin\AppData\Local\Temp\Dekont.exe"
2⤵
- Checks computer location settings
- Accesses Microsoft Outlook profiles
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
- outlook_office_path
- outlook_win_path
PID:988

C:\Windows\SysWOW64\cmd.exe
"cmd" /c start /b powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\Dekont.exe' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:1888

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell Start-Sleep -Seconds 2; Remove-Item -path 'C:\Users\Admin\AppData\Local\Temp\Dekont.exe'
4⤵
- Deletes itself
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1452

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\Powershell.exe
"Powershell" Add-MpPreference -ExclusionPath '"C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\VideoLAN\vlc.exe"'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2020

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Email Collection

1

T1114

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize
7KB

MD5
aef5dbb4bf2efedb9561b6266960f3e5

SHA1
99e5628ab9fca96abfa92df12e760ad7ffdc1038

SHA256
ce0807429c279525d2348707ad7cc40898f02aea691fcbdd6ff708d0e58b9e47

SHA512
4449bbc136362ce10640a498ea5eb6ab9b424c825015750b7ef5fe1709a3b372240bb40629260525bc3ef32141c4371bc1c22195249f31ddad8a4fbc709bbaf1

Download Submit
memory/988-68-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/988-73-0x00000000005B5000-0x00000000005C6000-memory.dmp

Filesize
68KB

Download
memory/988-66-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/988-58-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/988-60-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/988-61-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/988-62-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/988-63-0x00000000004BF8CE-mapping.dmp

Download
memory/988-57-0x0000000000400000-0x00000000004C4000-memory.dmp

Filesize
784KB

Download
memory/988-74-0x0000000000850000-0x0000000000864000-memory.dmp

Filesize
80KB

Download
memory/988-70-0x00000000022F0000-0x0000000002368000-memory.dmp

Filesize
480KB

Download
memory/1336-56-0x00000000007B0000-0x000000000086C000-memory.dmp

Filesize
752KB

Download
memory/1336-55-0x0000000074B51000-0x0000000074B53000-memory.dmp

Filesize
8KB

Download
memory/1336-54-0x0000000000880000-0x000000000098A000-memory.dmp

Filesize
1.0MB

Download
memory/1452-79-0x0000000072E40000-0x00000000733EB000-memory.dmp

Filesize
5.7MB

Download
memory/1452-76-0x0000000000000000-mapping.dmp

Download
memory/1888-75-0x0000000000000000-mapping.dmp

Download
memory/2020-65-0x0000000000000000-mapping.dmp

Download
memory/2020-72-0x000000006FA70000-0x000000007001B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads