masslogger | e14fddeef8f828f7c244f17140f851bb1f321c980637718bbf1333ab5665391c

Analysis

max time kernel
91s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
21-05-2022 01:59

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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.

yara_rule
masslogger_log_file

Executes dropped EXE 1 IoCs

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

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

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.

flow	ioc
28	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2068 set thread context of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1464	2068	WerFault.exe	79

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4992	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

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

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

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4992	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80
PID 2068 wrote to memory of 4992	2068	Halkbank_Ekstre_20200616_080918_33046.exe	80

outlook_office_path 1 IoCs

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

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 Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Email Collection

T1114

Command and Control

Exfiltration

Impact

Replay Monitor

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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/4992-168-0x0000000000400000-0x0000000000546000-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