nanocore | 998746d0f5d0c13df720f0bf3981d652c828ea64d64d2e16736a80123fb534aa

Analysis

max time kernel
119s
max time network
150s
platform
windows7_x64
resource
win7-en-20211208
submitted
14/01/2022, 16:03

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General

Target
39924fd67ad38b45a9f0871798074ec4.exe
Size 435KB
Sample220114-thdr8ahba3
SHA256 998746d0f5d0c13df720f0bf3981d652c828ea64d64d2e16736a80123fb534aa
MD5 39924fd67ad38b45a9f0871798074ec4
SHA1 9d8af43fbfe30f21c5f0e147ddc211efb67e71c6
SHA512 a77d009f8aa88f6cd0bc428219075169b495a16417aa3768e9d5be20635f5dd785dbfe1b7f23cc8b37e841fc4f354ea07157970487d4ec29600f6ca56a697a96
MD5 SHA1 SHA512

Score

10^/10

nanocore keylogger persistence spyware stealer trojan

Malware Config

Extracted

Family

nanocore

Version

1.2.2.0

nsayers4rm382.bounceme.net:2050
127.0.0.1:2050

Mutex

5ddb4cba-37cb-41bf-8dbf-b2a0e34526eb

Attributes

activate_away_mode
true
backup_connection_host
127.0.0.1
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2021-10-22T20:09:25.163988936Z
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
2050
default_group
PlugmanInc
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
5ddb4cba-37cb-41bf-8dbf-b2a0e34526eb
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
nsayers4rm382.bounceme.net
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\SAAS Monitor = "C:\\Program Files (x86)\\SAAS Monitor\\saasmon.exe"	RegSvcs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 844 set thread context of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	RegSvcs.exe
File opened for modification	C:\Program Files (x86)\SAAS Monitor\saasmon.exe	RegSvcs.exe

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 3 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
572	schtasks.exe
1152	schtasks.exe
1392	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
844	39924fd67ad38b45a9f0871798074ec4.exe
844	39924fd67ad38b45a9f0871798074ec4.exe
844	39924fd67ad38b45a9f0871798074ec4.exe
1064	powershell.exe
624	RegSvcs.exe
624	RegSvcs.exe
624	RegSvcs.exe
624	RegSvcs.exe
624	RegSvcs.exe
624	RegSvcs.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
624	RegSvcs.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	844	39924fd67ad38b45a9f0871798074ec4.exe
Token: SeDebugPrivilege	1064	powershell.exe
Token: SeDebugPrivilege	624	RegSvcs.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 1064	844	39924fd67ad38b45a9f0871798074ec4.exe	27
PID 844 wrote to memory of 1064	844	39924fd67ad38b45a9f0871798074ec4.exe	27
PID 844 wrote to memory of 1064	844	39924fd67ad38b45a9f0871798074ec4.exe	27
PID 844 wrote to memory of 1064	844	39924fd67ad38b45a9f0871798074ec4.exe	27
PID 844 wrote to memory of 572	844	39924fd67ad38b45a9f0871798074ec4.exe	29
PID 844 wrote to memory of 572	844	39924fd67ad38b45a9f0871798074ec4.exe	29
PID 844 wrote to memory of 572	844	39924fd67ad38b45a9f0871798074ec4.exe	29
PID 844 wrote to memory of 572	844	39924fd67ad38b45a9f0871798074ec4.exe	29
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 844 wrote to memory of 624	844	39924fd67ad38b45a9f0871798074ec4.exe	31
PID 624 wrote to memory of 1152	624	RegSvcs.exe	32
PID 624 wrote to memory of 1152	624	RegSvcs.exe	32
PID 624 wrote to memory of 1152	624	RegSvcs.exe	32
PID 624 wrote to memory of 1152	624	RegSvcs.exe	32
PID 624 wrote to memory of 1392	624	RegSvcs.exe	34
PID 624 wrote to memory of 1392	624	RegSvcs.exe	34
PID 624 wrote to memory of 1392	624	RegSvcs.exe	34
PID 624 wrote to memory of 1392	624	RegSvcs.exe	34

C:\Users\Admin\AppData\Local\Temp\39924fd67ad38b45a9f0871798074ec4.exe
"C:\Users\Admin\AppData\Local\Temp\39924fd67ad38b45a9f0871798074ec4.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:844
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\CGsmBdIfAIk.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1064
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CGsmBdIfAIk" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9FE7.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:572
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegSvcs.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:624
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SAAS Monitor" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA86F.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1152
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /create /f /tn "SAAS Monitor Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpA95A.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1392

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/624-65-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/624-68-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/624-76-0x00000000020F1000-0x00000000020F2000-memory.dmp

Download

memory/624-71-0x00000000020F0000-0x00000000020F1000-memory.dmp

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memory/624-64-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/624-67-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/624-66-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/844-54-0x0000000076151000-0x0000000076153000-memory.dmp

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memory/844-56-0x0000000000621000-0x0000000000622000-memory.dmp

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memory/844-55-0x0000000000620000-0x0000000000621000-memory.dmp

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memory/1064-63-0x0000000002532000-0x0000000002534000-memory.dmp

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memory/1064-61-0x0000000002530000-0x0000000002531000-memory.dmp

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memory/1064-62-0x0000000002531000-0x0000000002532000-memory.dmp

Download