masslogger | 107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d

General

Target

107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Size

852KB
MD5

f2a19e7895c8df61fbd2638601b4c4fa
SHA1

10c9530992c4d9d809cbe5749e3f0c689867dd5a
SHA256

107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d
SHA512

2a0b289742e9a92796b9e60dbe95c71cf3d6842ea17025373c608225ddc41a0c97e6416395f06c479378fa0559538008b082227b8de4610fbed8441a1c720278

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 v1.3.7.1 ################################################################# ### 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: 4/18/2022 8:09:29 PM MassLogger Started: 4/18/2022 8:09:18 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.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/1104-63-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1104-64-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1104-65-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1104-66-0x00000000004A2B4E-mapping.dmp	family_masslogger
behavioral1/memory/1104-68-0x0000000000400000-0x00000000004A8000-memory.dmp	family_masslogger
behavioral1/memory/1104-70-0x0000000000400000-0x00000000004A8000-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/1800-57-0x0000000007F30000-0x0000000007FDE000-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	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.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 opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.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 1800 set thread context of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30

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
1576	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1104	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
1104	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
1104	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
Token: SeDebugPrivilege	1104	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1104	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 1576	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	27
PID 1800 wrote to memory of 1576	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	27
PID 1800 wrote to memory of 1576	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	27
PID 1800 wrote to memory of 1576	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	27
PID 1800 wrote to memory of 1112	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	29
PID 1800 wrote to memory of 1112	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	29
PID 1800 wrote to memory of 1112	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	29
PID 1800 wrote to memory of 1112	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	29
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30
PID 1800 wrote to memory of 1104	1800	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe	30

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	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.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	107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe

C:\Users\Admin\AppData\Local\Temp\107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
"C:\Users\Admin\AppData\Local\Temp\107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\fYJUNCwqvHEi" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2647.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1576
- C:\Users\Admin\AppData\Local\Temp\107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.exe
  "{path}"
  2⤵
  PID:1112
- C:\Users\Admin\AppData\Local\Temp\107168d20470ac21f2fb56961699d086b1511301f5c3db7a4f9333c3806fe07d.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:1104

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\tmp2647.tmp

Filesize
1KB

MD5
1643e39fa4b1b611b04de654b6e89a26

SHA1
15fb907f4c0e00874a37ea9425c5dd413c276b07

SHA256
5d0fbe85c3aea9d2d2bbb9e6fe4b52b82611134ee5ee00f2884d8e898a267860

SHA512
39ea696bdddef920f1a3a0644c1bb21bedac4c7d72d8354475de0ffd620ba6ffacd63d2b77c1c5d86f0872e4533dfbb65916c337afd0d2e56628a3e1f4205086

Download Submit
memory/1104-68-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1104-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1104-73-0x0000000000D05000-0x0000000000D16000-memory.dmp

Filesize
68KB

Download
memory/1104-71-0x0000000000970000-0x00000000009B4000-memory.dmp

Filesize
272KB

Download
memory/1104-70-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1104-60-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1104-64-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1104-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1104-65-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1800-56-0x00000000005E0000-0x00000000005E8000-memory.dmp

Filesize
32KB

Download
memory/1800-54-0x0000000000F30000-0x000000000100C000-memory.dmp

Filesize
880KB

Download
memory/1800-55-0x0000000074E91000-0x0000000074E93000-memory.dmp

Filesize
8KB

Download
memory/1800-57-0x0000000007F30000-0x0000000007FDE000-memory.dmp

Filesize
696KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads