masslogger | af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410

Analysis

max time kernel
57s
max time network
139s
platform
windows7_x64
resource
win7-20220414-en
submitted
24-05-2022 16:10

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General

Target

af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe
Size

906KB
MD5

e48eb454f48bc4aeb237092a17f025c6
SHA1

e93ee3308fb56b8c52c298b702fa9198e4e22fc9
SHA256

af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410
SHA512

7a1340de52912bab746d610405543f66eb9a478c5f6b5503df3b4104f5ced8f3104ead75365591855c10eb0949e65d7d5749ecc562048cb5b8343ffb7ce3f982

Score

10^/10

masslogger coreentity ransomware spyware stealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\3B8E3C2477\Log.txt

Family

masslogger

Ransom Note

################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.50 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 6:44:38 PM MassLogger Started: 5/24/2022 6:44:31 PM Interval: 2 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.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/1676-56-0x0000000000540000-0x0000000000548000-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-1-5-21-2277218442-1199762539-2004043321-1000\Control Panel\International\Geo\Nation	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.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 1676 set thread context of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
624	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	624	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28
PID 1676 wrote to memory of 624	1676	af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe	28

C:\Users\Admin\AppData\Local\Temp\af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe
"C:\Users\Admin\AppData\Local\Temp\af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1676
- C:\Users\Admin\AppData\Local\Temp\af7ebebf226dc4b89e0e45888a5ffba6e736fdf81e0517d62e5dfb94ba460410.exe
  "{path}"
  2⤵
  - Checks computer location settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:624

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/624-108-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-578-0x0000000000630000-0x0000000000670000-memory.dmp

Filesize
256KB

Download
memory/624-59-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-62-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-68-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-66-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-72-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-78-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-84-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-96-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-104-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-112-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-102-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-120-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-116-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-114-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-110-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-58-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-61-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-118-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-100-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-98-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-94-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-92-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-90-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-88-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-86-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-82-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-80-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-76-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-74-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-70-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-106-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/624-63-0x0000000000400000-0x00000000004A8000-memory.dmp

Filesize
672KB

Download
memory/1676-55-0x0000000075761000-0x0000000075763000-memory.dmp

Filesize
8KB

Download
memory/1676-57-0x0000000004A30000-0x0000000004AE0000-memory.dmp

Filesize
704KB

Download
memory/1676-54-0x0000000000F70000-0x0000000001058000-memory.dmp

Filesize
928KB

Download
memory/1676-56-0x0000000000540000-0x0000000000548000-memory.dmp

Filesize
32KB

Download