masslogger | 611f0ae1632337b1d0ee2d5297ddfe300cc510c46266417bedd7c343ced0b264

Analysis

max time kernel
61s
max time network
125s
platform
windows7_x64
resource
win7-20220715-en
resource tags

arch:x64arch:x86image:win7-20220715-enlocale:en-usos:windows7-x64system
submitted
30/07/2022, 22:09

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

pqI75Aqgj0J5fmF.exe
Size

994KB
MD5

72115f284ae26d36cc4e0427fc3be420
SHA1

086b2d81c7913aac1f10632f34623356bf8cb081
SHA256

21178d3dc240fc60a328a125280b58e073cd8cb677553cc867a62fcdceca210f
SHA512

c29cd1e96a2d70ac1677806068614378bd4add58cc29b06a83f2abea1bf8151f930016cc97ec116ea3ad3ca0ad0598f27bfcaa267ca0be29df2948b5eb794f63

Score

10^/10

masslogger coreentity ransomware rezer0 spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\8B25A76FBE\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### 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: 7/30/2022 10:52:52 PM MassLogger Started: 7/30/2022 10:52:45 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\pqI75Aqgj0J5fmF.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

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/1940-56-0x0000000000240000-0x0000000000248000-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/2040-63-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-64-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-65-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-66-0x00000000004AB90E-mapping.dmp	family_masslogger
behavioral1/memory/2040-68-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-70-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-72-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-74-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-76-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-78-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-80-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-82-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-84-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-86-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-88-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-90-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-92-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-94-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-96-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-98-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-100-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-102-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-104-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-106-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-110-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-108-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-112-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-114-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-116-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-118-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-120-0x0000000000400000-0x00000000004B0000-memory.dmp	family_masslogger
behavioral1/memory/2040-122-0x0000000000400000-0x00000000004B0000-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/1940-57-0x0000000004CB0000-0x0000000004D68000-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-1-5-21-3440072777-2118400376-1759599358-1000\Control Panel\International\Geo\Nation	pqI75Aqgj0J5fmF.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 1940 set thread context of 2040	1940	pqI75Aqgj0J5fmF.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
840	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2040	pqI75Aqgj0J5fmF.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1940	pqI75Aqgj0J5fmF.exe
2040	pqI75Aqgj0J5fmF.exe
2040	pqI75Aqgj0J5fmF.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1940	pqI75Aqgj0J5fmF.exe
Token: SeDebugPrivilege	2040	pqI75Aqgj0J5fmF.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2040	pqI75Aqgj0J5fmF.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 1940 wrote to memory of 840	1940	pqI75Aqgj0J5fmF.exe	27
PID 1940 wrote to memory of 840	1940	pqI75Aqgj0J5fmF.exe	27
PID 1940 wrote to memory of 840	1940	pqI75Aqgj0J5fmF.exe	27
PID 1940 wrote to memory of 840	1940	pqI75Aqgj0J5fmF.exe	27
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29
PID 1940 wrote to memory of 2040	1940	pqI75Aqgj0J5fmF.exe	29

C:\Users\Admin\AppData\Local\Temp\pqI75Aqgj0J5fmF.exe
"C:\Users\Admin\AppData\Local\Temp\pqI75Aqgj0J5fmF.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1940
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\tzZSSBSPX" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:840
- C:\Users\Admin\AppData\Local\Temp\pqI75Aqgj0J5fmF.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2040

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9D59.tmp

Filesize
1KB

MD5
583695862bf95a6f9175b37ba1deea14

SHA1
fc390fa98c450dbf0cd73e467b7c53e195a13adb

SHA256
7dc7756c0e0c316c87614ba9482d6a137a779857d2a8529424aeba3b23ed915e

SHA512
f820c44d1ad24497eacf9573e768408c6a80cbadc6ca2d0b2bdb30f83b83df78f220548b296cc339fef21e87a27d00841214077e83a85453b5d2ae453c79f4fc

Download Submit
memory/1940-54-0x00000000013C0000-0x00000000014BE000-memory.dmp

Filesize
1016KB

Download
memory/1940-55-0x00000000762A1000-0x00000000762A3000-memory.dmp

Filesize
8KB

Download
memory/1940-56-0x0000000000240000-0x0000000000248000-memory.dmp

Filesize
32KB

Download
memory/1940-57-0x0000000004CB0000-0x0000000004D68000-memory.dmp

Filesize
736KB

Download
memory/2040-84-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-90-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-63-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-64-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-65-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-68-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-70-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-72-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-74-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-76-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-78-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-80-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-82-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-60-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-86-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-88-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-61-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-92-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-94-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-96-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-98-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-100-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-102-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-104-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-106-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-110-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-108-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-112-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-114-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-116-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-118-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-120-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-122-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2040-579-0x0000000000530000-0x0000000000574000-memory.dmp

Filesize
272KB

Download
memory/2040-581-0x0000000000C75000-0x0000000000C86000-memory.dmp

Filesize
68KB

Download