masslogger | f3e2ae9fd18ff363e001a655cc4f51169ec008cc7dcb665a379e38ab6fd48cbe

Analysis

max time kernel
87s
max time network
99s
platform
windows7_x64
resource
win7-20220414-en
submitted
21-05-2022 01:51

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General

Target

May Strict Order_7PrZEOy90VLPJsk.exe
Size

886KB
MD5

801c3f792d035b5c1603aa249a468d3a
SHA1

845a034eaf4086d1b3200fae50fc7f87071a388f
SHA256

3ab173f1c673d450f1f9640193efc87c76e64687e4c43ea0024287c875cde792
SHA512

4f94663d39fda1081c182b199dcd35abdc845b580a5c73ede50f979aa089d3b5c4abcd2caec4cdc1cd08bcdc294f538338a99043c609251f7472b0bd9c111143

Score

10^/10

masslogger collection coreentity rezer0 spyware stealer

Malware Config

Extracted

Credentials

Protocol: smtp
Host:
smtp.yandex.com
Port:
587
Username:
[email protected]
Password:
money123@@@

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

resource	yara_rule
behavioral1/memory/1436-56-0x00000000005D0000-0x00000000005D8000-memory.dmp	coreentity

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

MassLogger Main Payload 32 IoCs

resource	yara_rule
behavioral1/memory/884-63-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-64-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-68-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-65-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-70-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-66-0x00000000004A17DE-mapping.dmp	family_masslogger
behavioral1/memory/884-76-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-74-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-88-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-86-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-94-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-92-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-90-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-84-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-82-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-80-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-78-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-72-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-98-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-106-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-112-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-114-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-118-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-116-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-110-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-122-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-120-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-108-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-104-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-102-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-100-0x0000000000400000-0x00000000004A6000-memory.dmp	family_masslogger
behavioral1/memory/884-96-0x0000000000400000-0x00000000004A6000-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/1436-57-0x00000000051A0000-0x000000000524E000-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-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	May Strict Order_7PrZEOy90VLPJsk.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 queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	May Strict Order_7PrZEOy90VLPJsk.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	May Strict Order_7PrZEOy90VLPJsk.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	May Strict Order_7PrZEOy90VLPJsk.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook	May Strict Order_7PrZEOy90VLPJsk.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook	May Strict Order_7PrZEOy90VLPJsk.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key created	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key opened	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook	May Strict Order_7PrZEOy90VLPJsk.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 1436 set thread context of 884	1436	May Strict Order_7PrZEOy90VLPJsk.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
1636	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
884	May Strict Order_7PrZEOy90VLPJsk.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1436	May Strict Order_7PrZEOy90VLPJsk.exe
884	May Strict Order_7PrZEOy90VLPJsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1436	May Strict Order_7PrZEOy90VLPJsk.exe
Token: SeDebugPrivilege	884	May Strict Order_7PrZEOy90VLPJsk.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
884	May Strict Order_7PrZEOy90VLPJsk.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1436 wrote to memory of 1636	1436	May Strict Order_7PrZEOy90VLPJsk.exe	28
PID 1436 wrote to memory of 1636	1436	May Strict Order_7PrZEOy90VLPJsk.exe	28
PID 1436 wrote to memory of 1636	1436	May Strict Order_7PrZEOy90VLPJsk.exe	28
PID 1436 wrote to memory of 1636	1436	May Strict Order_7PrZEOy90VLPJsk.exe	28
PID 1436 wrote to memory of 112	1436	May Strict Order_7PrZEOy90VLPJsk.exe	31
PID 1436 wrote to memory of 112	1436	May Strict Order_7PrZEOy90VLPJsk.exe	31
PID 1436 wrote to memory of 112	1436	May Strict Order_7PrZEOy90VLPJsk.exe	31
PID 1436 wrote to memory of 112	1436	May Strict Order_7PrZEOy90VLPJsk.exe	31
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30
PID 1436 wrote to memory of 884	1436	May Strict Order_7PrZEOy90VLPJsk.exe	30

outlook_office_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe

outlook_win_path 1 IoCs

description	ioc	Process
Key queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676	May Strict Order_7PrZEOy90VLPJsk.exe

C:\Users\Admin\AppData\Local\Temp\May Strict Order_7PrZEOy90VLPJsk.exe
"C:\Users\Admin\AppData\Local\Temp\May Strict Order_7PrZEOy90VLPJsk.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qgTTZGfSOI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1AF1.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1636
- C:\Users\Admin\AppData\Local\Temp\May Strict Order_7PrZEOy90VLPJsk.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:884
- C:\Users\Admin\AppData\Local\Temp\May Strict Order_7PrZEOy90VLPJsk.exe
  "{path}"
  2⤵
  PID:112

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\tmp1AF1.tmp

Filesize
1KB

MD5
a59167e5e55fb9a669a25fde5377b891

SHA1
06173419110c43c2b6082928cb921c0824eca8d2

SHA256
fb1c7ac2f3d94fe98e35f05ad1cd6684a8b21141983803fb3d0e16750a57b3d1

SHA512
4a0f23d032b86d7789eaed108b0a0b8a66183c92f9bd3b199a8476be1b5ecdd3e0e62eb75e872133034f2ee0c2d29184c6818d7b6935a1a6bea95adc67899107

Download Submit
memory/884-90-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-108-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-570-0x0000000004A00000-0x0000000004A44000-memory.dmp

Filesize
272KB

Download
memory/884-96-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-100-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-61-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-92-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-63-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-64-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-68-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-65-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-70-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-76-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-74-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-88-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-86-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-84-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-60-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-102-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-94-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-82-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-80-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-78-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-72-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-98-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-106-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-112-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-114-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-118-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-116-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-110-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-122-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-120-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/884-104-0x0000000000400000-0x00000000004A6000-memory.dmp

Filesize
664KB

Download
memory/1436-54-0x00000000000D0000-0x00000000001B4000-memory.dmp

Filesize
912KB

Download
memory/1436-56-0x00000000005D0000-0x00000000005D8000-memory.dmp

Filesize
32KB

Download
memory/1436-55-0x0000000075EF1000-0x0000000075EF3000-memory.dmp

Filesize
8KB

Download
memory/1436-57-0x00000000051A0000-0x000000000524E000-memory.dmp

Filesize
696KB

Download