nanocore | 17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48

General

Target

17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe
Size

143KB
MD5

917ab8733f840d052d552bb3766fd926
SHA1

bf71e255ec62cc497796e4a030f221407efeece9
SHA256

17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48
SHA512

56f533cb1fafbb647510424d4affd6dbe6725d0350176086db41ab8b51998efeeda2a03b8458e35c7a8aef86177aff7138f732aa89e702ffd9cd1c61f366fcc3
SSDEEP

3072:runHgXqb+ixUyl/Gojn3TQNh71B3JkLrB:Y+Y7njn3Tst3CL

Score

10^/10

nanocore evasion keylogger spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Attributes

activate_away_mode
false
backup_connection_host
backup_dns_server
buffer_size
0
build_time
0001-01-01T00:00:00Z
bypass_user_account_control
false
bypass_user_account_control_data
clear_access_control
false
clear_zone_identifier
false
connect_delay
0
connection_port
0
default_group
enable_debug_mode
false
gc_threshold
0
keep_alive_timeout
0
keyboard_logging
false
lan_timeout
0
max_packet_size
0
mutex
mutex_timeout
0
prevent_system_sleep
false
primary_connection_host
primary_dns_server
request_elevation
false
restart_delay
0
run_delay
0
run_on_startup
false
set_critical_process
false
timeout_interval
0
use_custom_dns_server
false
version
wan_timeout
0

Signatures

NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\jFEvaD5IuXm.lnk	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe

Loads dropped DLL 1 IoCs

pid	Process
1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe

Unexpected DNS network traffic destination 7 IoCs

Network traffic to other servers than the configured DNS servers was detected on the DNS port.

description	ioc
Destination IP	37.235.1.177
Destination IP	37.235.1.174
Destination IP	37.235.1.174
Destination IP	37.235.1.174
Destination IP	37.235.1.177
Destination IP	37.235.1.177
Destination IP	37.235.1.174

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	RegAsm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1092 set thread context of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe
1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28
PID 1092 wrote to memory of 668	1092	17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe	28

C:\Users\Admin\AppData\Local\Temp\17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe
"C:\Users\Admin\AppData\Local\Temp\17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48.exe"
1⤵
- Drops startup file
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1092
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Checks whether UAC is enabled
  PID:668

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\IRjJOa6JYni\MicroSoftEssentials.exe

Filesize
143KB

MD5
917ab8733f840d052d552bb3766fd926

SHA1
bf71e255ec62cc497796e4a030f221407efeece9

SHA256
17a2a95dfa55c776ca3851613c0e4cf34dccbc0a13f3f97c749d3d75e5845a48

SHA512
56f533cb1fafbb647510424d4affd6dbe6725d0350176086db41ab8b51998efeeda2a03b8458e35c7a8aef86177aff7138f732aa89e702ffd9cd1c61f366fcc3

Download Submit
memory/668-62-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-58-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-59-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-63-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-61-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-66-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-68-0x0000000000400000-0x0000000000424000-memory.dmp

Filesize
144KB

Download
memory/668-70-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/668-71-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/1092-56-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/1092-55-0x0000000074740000-0x0000000074CEB000-memory.dmp

Filesize
5.7MB

Download
memory/1092-54-0x0000000075201000-0x0000000075203000-memory.dmp

Filesize
8KB

Download

Analysis

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