masslogger | dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b

General

Target

dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Size

842KB
MD5

387a56c1dcbd510cb007a1eb51cedbb0
SHA1

561ada5ee0a54494bab39ed57657fc038cf6044c
SHA256

dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b
SHA512

6188bba08eca98b89fd82601c1983e7c90d94593295e4328cc47c0aafa32a3bc61b7405a1c2752954f5a3386cbc56661873b5c4d3085bb234df36c1920feaa3a

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 v1.3.7.0 ################################################################# ### Logger Details ### 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: 5/24/2022 9:28:02 PM MassLogger Started: 5/24/2022 9:27:51 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

MassLogger
Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.
stealer spyware masslogger

MassLogger Main Payload 6 IoCs

resource	yara_rule
behavioral1/memory/1144-62-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1144-63-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1144-64-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1144-65-0x00000000004A2C8E-mapping.dmp	family_masslogger
behavioral1/memory/1144-67-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1144-69-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger

MassLogger log file 1 IoCs

Detects a log file produced by MassLogger.

yara_rule
masslogger_log_file

ReZer0 packer 1 IoCs

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

rezer0

resource	yara_rule
behavioral1/memory/1980-56-0x0000000000AC0000-0x0000000000B6E000-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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.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

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.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
4	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1980 set thread context of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29

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

pid	Process
1364	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1144	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
1144	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
1144	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
Token: SeDebugPrivilege	1144	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1144	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 1364	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	27
PID 1980 wrote to memory of 1364	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	27
PID 1980 wrote to memory of 1364	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	27
PID 1980 wrote to memory of 1364	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	27
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29
PID 1980 wrote to memory of 1144	1980	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe	29

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe

outlook_win_path 1 IoCs

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	dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe

C:\Users\Admin\AppData\Local\Temp\dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
"C:\Users\Admin\AppData\Local\Temp\dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1980
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wAqvqwLiOJTg" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2A3D.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1364
- C:\Users\Admin\AppData\Local\Temp\dea0d113b068f03a0024365dbec67dfa089a449b73ac006bdcb1d1123105ab9b.exe
  "{path}"
  2⤵
  - 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:1144

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

Email Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2A3D.tmp

Filesize
1KB

MD5
5a4b6fc7c540dd3909fb3b6d3c51dd55

SHA1
b68c09d56478752951deca685e8d71e98af9e448

SHA256
5319d5a0a1e3f6271381ae28087b88c265599588b7bd95dda949a360a2f4709f

SHA512
c7e181a8bb667e67a47d4f4f5aaca52afa156354985f6a91bee5a5feaacf4a0c5c3e9aedbce4c628d3b07cc47709ad8348ba6fe05e8af7a5019b0ada4d165f72

Download Submit
memory/1144-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1144-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1144-73-0x0000000000B40000-0x0000000000B54000-memory.dmp

Filesize
80KB

Download
memory/1144-72-0x00000000004D5000-0x00000000004E6000-memory.dmp

Filesize
68KB

Download
memory/1144-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1144-60-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1144-71-0x00000000768D1000-0x00000000768D3000-memory.dmp

Filesize
8KB

Download
memory/1144-70-0x0000000000510000-0x0000000000554000-memory.dmp

Filesize
272KB

Download
memory/1144-59-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1144-67-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1144-69-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1980-54-0x0000000000C10000-0x0000000000CE8000-memory.dmp

Filesize
864KB

Download
memory/1980-56-0x0000000000AC0000-0x0000000000B6E000-memory.dmp

Filesize
696KB

Download
memory/1980-55-0x00000000002F0000-0x0000000000300000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads