masslogger | 652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0

Analysis

max time kernel
110s
max time network
117s
platform
windows7_x64
resource
win7-20220414-en
submitted
24-05-2022 15:19

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General

Target

652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe
Size

794KB
MD5

94e998c790ab1ed6fcfdf5cb607c57c2
SHA1

aad7c499e736634afff7cb34968df1432a9cae6f
SHA256

652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0
SHA512

95c5a8da7c614b1dceb6094032d301204bdacfa0c704d012e41581a98d452a4967fdf1dc4032d48aefcf9579347370d78e0e3ca65dcc2df18eff271f2ff566a8

Score

10^/10

masslogger coreentity ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\AEF946DCB4\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 127.0.0.1 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: 5/24/2022 5:50:50 PM MassLogger Started: 5/24/2022 5:50:34 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.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/892-56-0x0000000000490000-0x0000000000498000-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.

yara_rule
masslogger_log_file

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	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
6	api.ipify.org
7	api.ipify.org

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 892 set thread context of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
612	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	612	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28
PID 892 wrote to memory of 612	892	652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe	28

C:\Users\Admin\AppData\Local\Temp\652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe
"C:\Users\Admin\AppData\Local\Temp\652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:892
- C:\Users\Admin\AppData\Local\Temp\652b8d5bf6e14fb828676c4aa16f7537b364e3b2a5af43f7fcc40421ef1145f0.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:612

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/612-118-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-80-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-578-0x0000000004225000-0x0000000004236000-memory.dmp

Filesize
68KB

Download
memory/612-74-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-58-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-66-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-68-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-59-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-70-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-114-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-92-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-100-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-110-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-120-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-72-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-76-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-82-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-112-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-108-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-106-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-104-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-102-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-98-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-96-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-94-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-90-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-88-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-86-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-84-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-116-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/612-78-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/892-55-0x00000000769D1000-0x00000000769D3000-memory.dmp

Filesize
8KB

Download
memory/892-57-0x0000000005820000-0x00000000058CE000-memory.dmp

Filesize
696KB

Download
memory/892-54-0x00000000001B0000-0x000000000027C000-memory.dmp

Filesize
816KB

Download
memory/892-56-0x0000000000490000-0x0000000000498000-memory.dmp

Filesize
32KB

Download