nanocore | af259f6d329dd3fe30be9946880242abc66fc3a65b1860068252af7983afcc97

Analysis

max time kernel
147s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
13/02/2024, 01:03

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General

Target
98143e77f708056f4d7214ef5201d4b0.exe
Size 948KB
Sample240213-beew1afg2t
SHA256 af259f6d329dd3fe30be9946880242abc66fc3a65b1860068252af7983afcc97
MD5 98143e77f708056f4d7214ef5201d4b0
SHA1 a0a99d12457e0361bcae222daee75a49de9b2ce7
SHA512 07ac4f88e19c8732bdd962f20f3c6322b003954e5cb888aff3d39668ddba38a7990f8aebec52823eb013fe1b3123cba02d7eacf475b161449eaf1746a3c45ec3
SSDEEP 12288:wwTky7n2mp3X0EtCOzzvIpM2CEDUHRTgvEgjF143NzEym8KVZqW6RiH5ewlJOSPO:4yzbF0gvIpMEEBwtT49z1KVZqW6Q
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nanocore evasion keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

79.134.225.36:8432
127.0.0.1:8432

Mutex

00eace82-1902-4e45-8d18-cdf0041fe99b

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-03-21T09:01:36.404867636Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
false
clear_zone_identifier
false
connect_delay
4000
connection_port
8432
default_group
recovery
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
00eace82-1902-4e45-8d18-cdf0041fe99b
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
79.134.225.36
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	98143e77f708056f4d7214ef5201d4b0.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\SMTP Subsystem = "C:\\Program Files (x86)\\SMTP Subsystem\\smtpss.exe"	98143e77f708056f4d7214ef5201d4b0.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	98143e77f708056f4d7214ef5201d4b0.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4648 set thread context of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	98143e77f708056f4d7214ef5201d4b0.exe
File opened for modification	C:\Program Files (x86)\SMTP Subsystem\smtpss.exe	98143e77f708056f4d7214ef5201d4b0.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 3 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1200	schtasks.exe
3972	schtasks.exe
5084	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4648	98143e77f708056f4d7214ef5201d4b0.exe
2332	98143e77f708056f4d7214ef5201d4b0.exe
2332	98143e77f708056f4d7214ef5201d4b0.exe
2332	98143e77f708056f4d7214ef5201d4b0.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2332	98143e77f708056f4d7214ef5201d4b0.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4648	98143e77f708056f4d7214ef5201d4b0.exe
Token: SeDebugPrivilege	2332	98143e77f708056f4d7214ef5201d4b0.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 4648 wrote to memory of 1200	4648	98143e77f708056f4d7214ef5201d4b0.exe	93
PID 4648 wrote to memory of 1200	4648	98143e77f708056f4d7214ef5201d4b0.exe	93
PID 4648 wrote to memory of 1200	4648	98143e77f708056f4d7214ef5201d4b0.exe	93
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 4648 wrote to memory of 2332	4648	98143e77f708056f4d7214ef5201d4b0.exe	95
PID 2332 wrote to memory of 3972	2332	98143e77f708056f4d7214ef5201d4b0.exe	96
PID 2332 wrote to memory of 3972	2332	98143e77f708056f4d7214ef5201d4b0.exe	96
PID 2332 wrote to memory of 3972	2332	98143e77f708056f4d7214ef5201d4b0.exe	96
PID 2332 wrote to memory of 5084	2332	98143e77f708056f4d7214ef5201d4b0.exe	98
PID 2332 wrote to memory of 5084	2332	98143e77f708056f4d7214ef5201d4b0.exe	98
PID 2332 wrote to memory of 5084	2332	98143e77f708056f4d7214ef5201d4b0.exe	98

C:\Users\Admin\AppData\Local\Temp\98143e77f708056f4d7214ef5201d4b0.exe
"C:\Users\Admin\AppData\Local\Temp\98143e77f708056f4d7214ef5201d4b0.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4648
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\wWRsrXCFAG" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDB7.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1200
- C:\Users\Admin\AppData\Local\Temp\98143e77f708056f4d7214ef5201d4b0.exe
  "{path}"
  2⤵
  - Adds Run key to start application
  - Checks whether UAC is enabled
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2332
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1047.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:3972
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SMTP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp1077.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:5084

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

98143e77f708056f4d7214ef5201d4b0.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\98143e77f708056f4d7214ef5201d4b0.exe.log
Size 1KB
SHA256 e16024b092a026a9dc00df69d4b9bbcab7b2dc178dc5291fc308a1abc9304a99
MD5 84e77a587d94307c0ac1357eb4d3d46f
SHA1 83cc900f9401f43d181207d64c5adba7a85edc1e
SHA512 aefb5c62200b3ed97718d20a89990954d4d8acdc0a6a73c5a420f1bba619cb79e70c2cd0a579b9f52dc6b09e1de2cea6cd6cac4376cfee92d94e2c01d310f691
MD5 SHA1 SHA512

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tmp1047.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1047.tmp
Size 1KB
SHA256 23033184cb3a21ed851b8924ae43ee5f99008cf2fd6d8c1252d545524fe7a16c
MD5 df3263988261e8967178edfdcc05056b
SHA1 9a0bf6724917a89390549fb9a2a80e8b375a0579
SHA512 f0c46a47aecc7eeb729c332a2067aadd04a70f91d7edba75cdba1393604a66ba070c667b1fd1326a75ae815bf00cb4ab3f5057976f026f5a9e6c7aee7098a7ea
MD5 SHA1 SHA512

Submit Download

tmp1077.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp1077.tmp
Size 1KB
SHA256 3d568a47a8944a47f4aed6982755ac7ff7dda469cc1c81c213ecaa5d89de1f83
MD5 0339b45ef206f4becc88be0d65e24b9e
SHA1 6503a1851f4ccd8c80a31f96bd7ae40d962c9fad
SHA512 c98f4513db34d50510dd986e0d812545c442bd5bef26932032b165759627fab4e00c95fe907ab3416a8a1042bfa77aa516c479f1ff7d1ec2f21ae66df8f72551
MD5 SHA1 SHA512

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tmpDB7.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmpDB7.tmp
Size 1KB
SHA256 14cb9d30325f010b64f04741208ba7c434a56c3952c9fe6b646ac6043f644977
MD5 92677a5bf4251f92370cdacdd8733bb9
SHA1 38c0a6e07b64683f75dc105c40eb3dc18aec791e
SHA512 de089195b64fdf51b35afe66f9a8d8fc7c47e1e9cbf6e54c089ae9d5fd219ab24e5af7692767a784935c20da1d918c67705f4e429b1478c56a52f10627611763
MD5 SHA1 SHA512

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memory/2332-15-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/2332-32-0x0000000005410000-0x0000000005420000-memory.dmp

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memory/2332-31-0x0000000074BE0000-0x0000000075390000-memory.dmp

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memory/2332-30-0x0000000006400000-0x000000000640A000-memory.dmp

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memory/2332-29-0x00000000062D0000-0x00000000062EE000-memory.dmp

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memory/2332-28-0x0000000005810000-0x000000000581A000-memory.dmp

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memory/2332-20-0x0000000005410000-0x0000000005420000-memory.dmp

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memory/2332-19-0x0000000074BE0000-0x0000000075390000-memory.dmp

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memory/4648-3-0x00000000055C0000-0x0000000005652000-memory.dmp

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memory/4648-0-0x0000000000AB0000-0x0000000000BA4000-memory.dmp

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memory/4648-4-0x0000000005660000-0x00000000056FC000-memory.dmp

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memory/4648-11-0x000000000B030000-0x000000000B0A8000-memory.dmp

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memory/4648-18-0x0000000074BE0000-0x0000000075390000-memory.dmp

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memory/4648-10-0x00000000088D0000-0x0000000008994000-memory.dmp

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memory/4648-2-0x0000000005AD0000-0x0000000006074000-memory.dmp

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memory/4648-1-0x0000000074BE0000-0x0000000075390000-memory.dmp

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memory/4648-9-0x00000000055A0000-0x00000000055B0000-memory.dmp

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memory/4648-8-0x0000000074BE0000-0x0000000075390000-memory.dmp

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memory/4648-7-0x00000000059E0000-0x00000000059E8000-memory.dmp

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memory/4648-6-0x0000000005700000-0x000000000570A000-memory.dmp

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memory/4648-5-0x00000000055A0000-0x00000000055B0000-memory.dmp

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