nanocore | 0102fefc6debe03fac9211a27bceb1f13a08592df8ffde3892200fc86c7cfe91

General

Target
56577375f37b4f1e49325708189e431c.exe
Size 537KB
Sample200927-q2mnpsj13e
SHA256 0102fefc6debe03fac9211a27bceb1f13a08592df8ffde3892200fc86c7cfe91
MD5 56577375f37b4f1e49325708189e431c
SHA1 69ed11dcc1acfe47d419ddcc1b15c8df100745c9
SHA512 eee3a89cb9628638a15301dc727fbcd0455d97ca38f1b847cffa7aab1b0e1adccc13a9ee16c9a6e009e112db8c7b87d34d7ed8f9977faf6484dc44c7c53ce76e
MD5 SHA1 SHA512

Score

10^/10

persistence keylogger trojan stealer spyware nanocore

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

C2

office1.servemp3.com:2017

Mutex

d87de095-b054-44d3-a032-be422776e3c0

Attributes

activate_away_mode
true
backup_connection_host
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2020-07-04T08:30:05.657848036Z
bypass_user_account_control
false
bypass_user_account_control_data
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
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
2017
default_group
Default
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
d87de095-b054-44d3-a032-be422776e3c0
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
office1.servemp3.com
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\IMAP Service = "C:\\Program Files (x86)\\IMAP Service\\imapsv.exe"	MSBuild.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 292 set thread context of 3848	292	56577375f37b4f1e49325708189e431c.exe	75

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\IMAP Service\imapsv.exe	MSBuild.exe
File opened for modification	C:\Program Files (x86)\IMAP Service\imapsv.exe	MSBuild.exe

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
2808	schtasks.exe
2196	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3848	MSBuild.exe
3848	MSBuild.exe
3848	MSBuild.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3848	MSBuild.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3848	MSBuild.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 292 wrote to memory of 3848	292	56577375f37b4f1e49325708189e431c.exe	75
PID 3848 wrote to memory of 2196	3848	MSBuild.exe	76
PID 3848 wrote to memory of 2196	3848	MSBuild.exe	76
PID 3848 wrote to memory of 2196	3848	MSBuild.exe	76
PID 3848 wrote to memory of 2808	3848	MSBuild.exe	78
PID 3848 wrote to memory of 2808	3848	MSBuild.exe	78
PID 3848 wrote to memory of 2808	3848	MSBuild.exe	78

C:\Users\Admin\AppData\Local\Temp\56577375f37b4f1e49325708189e431c.exe
"C:\Users\Admin\AppData\Local\Temp\56577375f37b4f1e49325708189e431c.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:292
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\MSBuild.exe"
  2⤵
  - Adds Run key to start application
  - Drops file in Program Files directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3848
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "IMAP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA9ED.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:2196
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "IMAP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpAB65.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:2808