masslogger | e14fddeef8f828f7c244f17140f851bb1f321c980637718bbf1333ab5665391c

General

Target

Halkbank_Ekstre_20200616_080918_33046.exe
Size

2.3MB
MD5

817f0a2fffee4c45c0309fd815ea5468
SHA1

b67953a212657011a227f626b958577e2ecf3010
SHA256

4a8306a06d0986039735160a8457fb8188fbd02015acb84808c97ffd3204020a
SHA512

516a866a2e93cc8aaa4c97cbc35c181b2660ad808b2a97f51165e44bdad1d609b0bd84bdac1786e32fe381e4ea7a5ce2e495b2dafc9a7ae2eebb2d5071096a47

Score

10^/10

masslogger collection ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\781F780B4E\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.3.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 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 3:03:05 AM MassLogger Started: 5/21/2022 3:03:01 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe As Administrator: True

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
Dmacdavid

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
Executes dropped EXE 1 IoCs

Processes:

InstallUtil.exe

pid process

4992 InstallUtil.exe

yara_rule
masslogger_log_file

pid	process
4992	InstallUtil.exe

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:

InstallUtil.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Control Panel\International\Geo\Nation	InstallUtil.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

Accesses Microsoft Outlook profiles 1 TTPs 18 IoCs

collection

Email Collection

T1114

Processes:

InstallUtil.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\15.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	InstallUtil.exe
Key created	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe
Key opened	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.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

28 api.ipify.org
Suspicious use of SetThreadContext 1 IoCs

Processes:

Halkbank_Ekstre_20200616_080918_33046.exe

description pid process target process

PID 2068 set thread context of 4992 2068 Halkbank_Ekstre_20200616_080918_33046.exe InstallUtil.exe
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1464 2068 WerFault.exe Halkbank_Ekstre_20200616_080918_33046.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

InstallUtil.exe

pid process

4992 InstallUtil.exe

flow	ioc
28	api.ipify.org

description	pid	process	target process
PID 2068 set thread context of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe

pid	pid_target	process	target process
1464	2068	WerFault.exe	Halkbank_Ekstre_20200616_080918_33046.exe

pid	process
4992	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

Halkbank_Ekstre_20200616_080918_33046.exeInstallUtil.exe

pid	process
2068	Halkbank_Ekstre_20200616_080918_33046.exe
2068	Halkbank_Ekstre_20200616_080918_33046.exe
2068	Halkbank_Ekstre_20200616_080918_33046.exe
4992	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Halkbank_Ekstre_20200616_080918_33046.exeInstallUtil.exe

description pid process

Token: SeDebugPrivilege 2068 Halkbank_Ekstre_20200616_080918_33046.exe
Token: SeDebugPrivilege 4992 InstallUtil.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

InstallUtil.exe

pid process

4992 InstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	2068	Halkbank_Ekstre_20200616_080918_33046.exe
Token: SeDebugPrivilege	4992	InstallUtil.exe

pid	process
4992	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Halkbank_Ekstre_20200616_080918_33046.exe

description	pid	process	target process
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	InstallUtil.exe

outlook_office_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

outlook_win_path 1 IoCs

Processes:

InstallUtil.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200616_080918_33046.exe
"C:\Users\Admin\AppData\Local\Temp\Halkbank_Ekstre_20200616_080918_33046.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
"C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- 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:4992

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2068 -s 1376
2⤵
- Program crash
PID:1464

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 2068 -ip 2068
1⤵
PID:3812

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\Local\Temp\InstallUtil.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
Filesize
41KB

MD5
5d4073b2eb6d217c19f2b22f21bf8d57

SHA1
f0209900fbf08d004b886a0b3ba33ea2b0bf9da8

SHA256
ac1a3f21fcc88f9cee7bf51581eafba24cc76c924f0821deb2afdf1080ddf3d3

SHA512
9ac94880684933ba3407cdc135abc3047543436567af14cd9269c4adc5a6535db7b867d6de0d6238a21b94e69f9890dbb5739155871a624520623a7e56872159

Download Submit
memory/2068-131-0x0000000005F80000-0x0000000006524000-memory.dmp

Filesize
5.6MB

Download
memory/2068-132-0x0000000005AC0000-0x0000000005B52000-memory.dmp

Filesize
584KB

Download
memory/2068-133-0x0000000005F30000-0x0000000005F74000-memory.dmp

Filesize
272KB

Download
memory/2068-134-0x0000000007A40000-0x0000000007A62000-memory.dmp

Filesize
136KB

Download
memory/2068-130-0x0000000000DA0000-0x0000000000FFE000-memory.dmp

Filesize
2.4MB

Download
memory/4992-166-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-174-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-140-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-142-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-144-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-146-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-148-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-150-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-152-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-154-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-156-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-158-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-160-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-162-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-164-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-135-0x0000000000000000-mapping.dmp

Download
memory/4992-168-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-170-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-172-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-136-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-176-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-178-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-180-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-182-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-184-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-186-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-188-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-190-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-192-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-194-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-196-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-198-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-200-0x0000000000400000-0x0000000000546000-memory.dmp

Filesize
1.3MB

Download
memory/4992-643-0x0000000005EC0000-0x0000000005F26000-memory.dmp

Filesize
408KB

Download
memory/4992-644-0x00000000061D0000-0x00000000061DA000-memory.dmp

Filesize
40KB

Download
memory/4992-645-0x0000000007C70000-0x0000000007CC0000-memory.dmp

Filesize
320KB

Download
memory/4992-646-0x0000000007D60000-0x0000000007DFC000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads