masslogger | 54cb28a794d4dd8d4296b0ca070eb2afd1154f4a8ead7aec7dc0066ec62f06a6

Analysis

max time kernel
70s
max time network
75s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 01:37

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General

Target

x2KDOSVNRiSbYcK.exe
Size

871KB
MD5

23623b167a6e271b89f266cda6f4d308
SHA1

b8f5846cf059451256cf6d25f804588651a4b04b
SHA256

8a3dd3eb355760a77c7bd89e2316c7741e37f9b20435a23d144e58ba856bd7c7
SHA512

11830c8366ec005b3439c9b9bf4de62db61d44d0c296b9d91a2c3705fa2f3454abd84bc1a711f55db2926c89f6556c3751e4af292e4cfe0456038886552fe760

Score

10^/10

masslogger collection coreentity rezer0 spyware stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
mail.privateemail.com
Port:
587
Username:
[email protected]
Password:
requestShow@

Signatures

CoreEntity .NET Packer 1 IoCs

A .NET packer called CoreEntity where it has embedded the payload as a BitMap object which is later decrypted.

coreentity

Processes:

resource	yara_rule
behavioral1/memory/1336-56-0x00000000006F0000-0x00000000006F8000-memory.dmp	coreentity

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/1336-57-0x0000000005BF0000-0x0000000005C9E000-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:

x2KDOSVNRiSbYcK.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Control Panel\International\Geo\Nation	x2KDOSVNRiSbYcK.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:

x2KDOSVNRiSbYcK.exe

description	ioc	process
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	x2KDOSVNRiSbYcK.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	x2KDOSVNRiSbYcK.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key queried	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	x2KDOSVNRiSbYcK.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	x2KDOSVNRiSbYcK.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	x2KDOSVNRiSbYcK.exe
Key opened	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	x2KDOSVNRiSbYcK.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.exe
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	x2KDOSVNRiSbYcK.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

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

Processes:

x2KDOSVNRiSbYcK.exe

description pid process target process

PID 1336 set thread context of 2036 1336 x2KDOSVNRiSbYcK.exe x2KDOSVNRiSbYcK.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

1484 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

x2KDOSVNRiSbYcK.exe

pid process

2036 x2KDOSVNRiSbYcK.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

x2KDOSVNRiSbYcK.exe

pid process

2036 x2KDOSVNRiSbYcK.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

x2KDOSVNRiSbYcK.exe

description pid process

Token: SeDebugPrivilege 2036 x2KDOSVNRiSbYcK.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

x2KDOSVNRiSbYcK.exe

pid process

2036 x2KDOSVNRiSbYcK.exe

flow	ioc
3	api.ipify.org

description	pid	process	target process
PID 1336 set thread context of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe

pid	process
1484	schtasks.exe

pid	process
2036	x2KDOSVNRiSbYcK.exe

pid	process
2036	x2KDOSVNRiSbYcK.exe

description	pid	process
Token: SeDebugPrivilege	2036	x2KDOSVNRiSbYcK.exe

pid	process
2036	x2KDOSVNRiSbYcK.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

x2KDOSVNRiSbYcK.exe

description	pid	process	target process
PID 1336 wrote to memory of 1484	1336	x2KDOSVNRiSbYcK.exe	schtasks.exe
PID 1336 wrote to memory of 1484	1336	x2KDOSVNRiSbYcK.exe	schtasks.exe
PID 1336 wrote to memory of 1484	1336	x2KDOSVNRiSbYcK.exe	schtasks.exe
PID 1336 wrote to memory of 1484	1336	x2KDOSVNRiSbYcK.exe	schtasks.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe
PID 1336 wrote to memory of 2036	1336	x2KDOSVNRiSbYcK.exe	x2KDOSVNRiSbYcK.exe

outlook_office_path 1 IoCs

Processes:

x2KDOSVNRiSbYcK.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	x2KDOSVNRiSbYcK.exe

outlook_win_path 1 IoCs

Processes:

x2KDOSVNRiSbYcK.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	x2KDOSVNRiSbYcK.exe

C:\Users\Admin\AppData\Local\Temp\x2KDOSVNRiSbYcK.exe
"C:\Users\Admin\AppData\Local\Temp\x2KDOSVNRiSbYcK.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1336
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\IWRsxzh" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1095.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1484
- C:\Users\Admin\AppData\Local\Temp\x2KDOSVNRiSbYcK.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:2036

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\tmp1095.tmp

Filesize
1KB

MD5
729d013f0e64abac7478802b66a0be6c

SHA1
cecba30543dcafe73311aad0cbc9931e91f1c4da

SHA256
7c330cc468f71f3def86c337d43cb6a63b10d55222de0eb895b19b52540701e1

SHA512
03ea0d6c5122aa74740ef09f97e02fa40dc60b81acd832939ddced538cdf0dc25a8327eb9976f59e01a7088d699a1c3de43c7e66cbd66bd3473d64b3789b8715

Download Submit
memory/1336-54-0x0000000001220000-0x0000000001300000-memory.dmp

Filesize
896KB

Download
memory/1336-55-0x0000000074B51000-0x0000000074B53000-memory.dmp

Filesize
8KB

Download
memory/1336-56-0x00000000006F0000-0x00000000006F8000-memory.dmp

Filesize
32KB

Download
memory/1336-57-0x0000000005BF0000-0x0000000005C9E000-memory.dmp

Filesize
696KB

Download
memory/1484-58-0x0000000000000000-mapping.dmp

Download
memory/2036-84-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-90-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-63-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-64-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-65-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-66-0x00000000004A148E-mapping.dmp

Download
memory/2036-68-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-70-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-72-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-74-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-76-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-78-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-80-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-82-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-60-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-86-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-88-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-61-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-92-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-94-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-96-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-98-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-100-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-102-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-104-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-106-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-108-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-110-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-112-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-114-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-116-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-118-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-120-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-122-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/2036-570-0x0000000000D60000-0x0000000000DA4000-memory.dmp

Filesize
272KB

Download