metastealer | fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5

General

Target

fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe
Size

529KB
MD5

f6da8b03a5b5fd635ce117e153475ac8
SHA1

2d5abf679645fa3b724075e7395d6713e371385c
SHA256

fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5
SHA512

f82eaf9f5fc9aae823934aef1d9c4715fed37dc79a735d5e07f1ad95c87eae3cf4d4d221c8e1e990a90f7ac87fd0769283fe820168fb36fc81ddd8f2abb24840

Score

10^/10

metastealer nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

gameserver-789.duia.ro:7788

Mutex

fb9efb30-e558-49d5-9cd1-9180e81ccdbc

Attributes

activate_away_mode
true
backup_connection_host
gameserver-789.duia.ro
backup_dns_server
buffer_size
65535
build_time
2020-07-24T15:34:32.966486136Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
true
connect_delay
4000
connection_port
7788
default_group
Tesla
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
fb9efb30-e558-49d5-9cd1-9180e81ccdbc
mutex_timeout
5000
prevent_system_sleep
true
primary_connection_host
gameserver-789.duia.ro
primary_dns_server
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
true
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

Meta Stealer Stealer
Meta Stealer steals passwords stored in browsers, written in C++.
stealer metastealer
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

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-1-5-21-1346565761-3498240568-4147300184-1000\Control Panel\International\Geo\Nation	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1504 set thread context of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93

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
2976	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
860	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe
860	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe
860	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
860	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	860	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 2976	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	91
PID 1504 wrote to memory of 2976	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	91
PID 1504 wrote to memory of 2976	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	91
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93
PID 1504 wrote to memory of 860	1504	fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe	93

C:\Users\Admin\AppData\Local\Temp\fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe
"C:\Users\Admin\AppData\Local\Temp\fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1504
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mZJPCKr" /XML "C:\Users\Admin\AppData\Local\Temp\tmp27C4.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2976
- C:\Users\Admin\AppData\Local\Temp\fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe
  "{path}"
  2⤵
  - Checks whether UAC is enabled
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  PID:860

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

3

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\fa5c8d819421344cdd842e2cae7eec743c40b1ec9095c604f51cedbf82c42ca5.exe.log

Filesize
1KB

MD5
6f8f3a9a57cb30e686d3355e656031e0

SHA1
acccd6befb1a2f40e662280bc5182e086a0d079b

SHA256
283586e83b25099a5698cb9caf9c594a37060d11e0f55c81bb9c6d4f728448ea

SHA512
8f11d645ff4f8d5b1c45b06eb52cd45319659255306d60e80e33abfd04b9e3b1164679f11a8a23bd493e4b3f6b9841d70e553a01835eeaf6035b4d05e4fd7b54

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp27C4.tmp

Filesize
1KB

MD5
9ea3a6b01ce091920688cde281fba671

SHA1
179b749c9c6c9343aa746266fcb73930ae57c96f

SHA256
5925753836f913f67c5ef62a4fed5322c01dc3cf20a026714b456bdc706ce7eb

SHA512
45b05905ce45ffc7dd6c593337807c344a393994c44d5c4ae386e3f8f4cfb23ecf9c7e5e87d3d01b1dc67d526db9af868259c4a04e71c221d3ab164d26904132

Download Submit
memory/860-139-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1504-130-0x0000000000FD0000-0x000000000105A000-memory.dmp

Filesize
552KB

Download
memory/1504-131-0x0000000008320000-0x00000000088C4000-memory.dmp

Filesize
5.6MB

Download
memory/1504-132-0x0000000007E10000-0x0000000007EA2000-memory.dmp

Filesize
584KB

Download
memory/1504-133-0x0000000007DA0000-0x0000000007DAA000-memory.dmp

Filesize
40KB

Download
memory/1504-134-0x0000000008E00000-0x000000000932C000-memory.dmp

Filesize
5.2MB

Download
memory/1504-135-0x00000000095E0000-0x000000000967C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads