masslogger | 7a944b45b691b8e0f73b2eaaac99eb3ba2c01ad97c0d810a69e85014db880588

Analysis

max time kernel
76s
max time network
129s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 02:41

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General

Target

scan00465.pdf.exe
Size

1.1MB
MD5

9964435d5a0219c8145afd6dedda05e0
SHA1

f2c56a7896e345f8178c2ecb0ead6d9a3b6461c3
SHA256

b2a81f319b87bf35c7fb1ccac2e2fbf82ef6d3263ae2cb8fa5c242f43bfbfd39
SHA512

818a13667d2cdd9c0019868bfc685f36068c54e05336f4b3ef827955e9defcfce6881f98f27e0ce812446409d34e7e053154f6358009f7b85a8bb2ba7cd836b8

Score

10^/10

masslogger collection ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

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

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.5.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 4:05:00 AM MassLogger Started: 5/21/2022 4:04:49 AM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Extracted

Credentials

Protocol: smtp
Host:
mail.saritatravels.com
Port:
587
Username:
[email protected]
Password:
sumits%$321

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

yara_rule
masslogger_log_file

ReZer0 packer 1 IoCs

Detects ReZer0, a packer with multiple versions used in various campaigns.

rezer0

Processes:

resource	yara_rule
behavioral1/memory/1808-57-0x0000000005870000-0x0000000005928000-memory.dmp	rezer0

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:

scan00465.pdf.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	scan00465.pdf.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 15 IoCs

collection

Email Collection

T1114

Processes:

scan00465.pdf.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	scan00465.pdf.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:

scan00465.pdf.exe

description pid process target process

PID 1808 set thread context of 2016 1808 scan00465.pdf.exe scan00465.pdf.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

1932 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

scan00465.pdf.exescan00465.pdf.exe

pid process

1808 scan00465.pdf.exe
2016 scan00465.pdf.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

scan00465.pdf.exescan00465.pdf.exe

description pid process

Token: SeDebugPrivilege 1808 scan00465.pdf.exe
Token: SeDebugPrivilege 2016 scan00465.pdf.exe

flow	ioc
4	api.ipify.org

description	pid	process	target process
PID 1808 set thread context of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe

pid	process
1932	schtasks.exe

pid	process
1808	scan00465.pdf.exe
2016	scan00465.pdf.exe

description	pid	process
Token: SeDebugPrivilege	1808	scan00465.pdf.exe
Token: SeDebugPrivilege	2016	scan00465.pdf.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

scan00465.pdf.exe

description	pid	process	target process
PID 1808 wrote to memory of 1932	1808	scan00465.pdf.exe	schtasks.exe
PID 1808 wrote to memory of 1932	1808	scan00465.pdf.exe	schtasks.exe
PID 1808 wrote to memory of 1932	1808	scan00465.pdf.exe	schtasks.exe
PID 1808 wrote to memory of 1932	1808	scan00465.pdf.exe	schtasks.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe
PID 1808 wrote to memory of 2016	1808	scan00465.pdf.exe	scan00465.pdf.exe

outlook_office_path 1 IoCs

Processes:

scan00465.pdf.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	scan00465.pdf.exe

outlook_win_path 1 IoCs

Processes:

scan00465.pdf.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	scan00465.pdf.exe

C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1808
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\BzSLPao" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB175.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1932
- C:\Users\Admin\AppData\Local\Temp\scan00465.pdf.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Accesses Microsoft Outlook profiles
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - outlook_office_path
  - outlook_win_path
  PID:2016

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

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\tmpB175.tmp

Filesize
1KB

MD5
b657b188364ae89954ab4d89d1961053

SHA1
0f06305c77e036113396700cd95811bed00d99ac

SHA256
87bdd25e86fe3d21ae58217980b70e7a65ce407793e05af99acc4d719cbb851c

SHA512
044d954152448f7782b4a6b6f025315fcf562ce2832659dfb84e876eb425f247efb221c525c0e53d96dbec37cbccff41e7e3c83a15a1597d91c83016cf1f32c8

Download Submit
memory/1808-54-0x00000000002E0000-0x00000000003FA000-memory.dmp

Filesize
1.1MB

Download
memory/1808-55-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

Filesize
8KB

Download
memory/1808-56-0x00000000004A0000-0x00000000004A8000-memory.dmp

Filesize
32KB

Download
memory/1808-57-0x0000000005870000-0x0000000005928000-memory.dmp

Filesize
736KB

Download
memory/1932-58-0x0000000000000000-mapping.dmp

Download
memory/2016-84-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-94-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-63-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-64-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-65-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-66-0x00000000004AB99E-mapping.dmp

Download
memory/2016-68-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-70-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-72-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-74-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-76-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-78-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-80-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-82-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-60-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-86-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-88-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-90-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-92-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-61-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-96-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-98-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-100-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-102-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-104-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-106-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-108-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-110-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-112-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-114-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-116-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-118-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-120-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-122-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2016-581-0x00000000005F0000-0x0000000000634000-memory.dmp

Filesize
272KB

Download
memory/2016-583-0x0000000004DE5000-0x0000000004DF6000-memory.dmp

Filesize
68KB

Download
memory/2016-584-0x0000000002180000-0x0000000002194000-memory.dmp

Filesize
80KB

Download