nanocore | 59930cbba4dd59a8e76a13ecc22429f1ec061c79f31a0f4e0ad4a7d9de1e486f

General

Target

Builder.exe
Size

495KB
MD5

bda37ad3c62e346bc0dc3c0c5dd904ed
SHA1

ccd30af09ca5d3b725f41d33f34d826f25af6dd6
SHA256

59930cbba4dd59a8e76a13ecc22429f1ec061c79f31a0f4e0ad4a7d9de1e486f
SHA512

a8a198f1b60585abf81d76423577990c45fbcbbaaae6c866ad39d5935224f17c429d0202f23acc56b62675f8bc2110b851ad578e42e66dded1ca60edce522074
SSDEEP

12288:ZLV6Btpmk/ZAnwuKKb0660GFvJSbV1y38/Zt6Znj:hApf/OwC06GFvJY1ND6Zj

Score

10^/10

nanocore discovery evasion keylogger persistence spyware stealer trojan

Malware Config

Signatures

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

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\DHCP Manager = "C:\\Program Files (x86)\\DHCP Manager\\dhcpmgr.exe"	Builder.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	Builder.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\DHCP Manager\dhcpmgr.exe	Builder.exe
File opened for modification	C:\Program Files (x86)\DHCP Manager\dhcpmgr.exe	Builder.exe

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Builder.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2572	schtasks.exe
2696	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2356	Builder.exe
2356	Builder.exe
2356	Builder.exe
2356	Builder.exe
2356	Builder.exe
2356	Builder.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2356	Builder.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	Builder.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2356 wrote to memory of 2572	2356	Builder.exe	30
PID 2356 wrote to memory of 2572	2356	Builder.exe	30
PID 2356 wrote to memory of 2572	2356	Builder.exe	30
PID 2356 wrote to memory of 2572	2356	Builder.exe	30
PID 2356 wrote to memory of 2696	2356	Builder.exe	32
PID 2356 wrote to memory of 2696	2356	Builder.exe	32
PID 2356 wrote to memory of 2696	2356	Builder.exe	32
PID 2356 wrote to memory of 2696	2356	Builder.exe	32

C:\Users\Admin\AppData\Local\Temp\Builder.exe
"C:\Users\Admin\AppData\Local\Temp\Builder.exe"
1⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2356
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Manager" /xml "C:\Users\Admin\AppData\Local\Temp\tmp96D3.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2572
- C:\Windows\SysWOW64\schtasks.exe
  "schtasks.exe" /create /f /tn "DHCP Manager Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp9722.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp96D3.tmp

Filesize
1KB

MD5
b5a43b9fb362d98c033e9a8b39aac74c

SHA1
e32983a42bf0a3dc9b5520ece9d8f34d99bc41d5

SHA256
75b9e1e010550532b5f9b425e98710fd6a559a4a15e4736306a4cf9593021235

SHA512
1bd7d7646790e9870f6c30bbf53e8140f20172eddedf72b8f3242d1daf192dbce03562a34f9da1b838d2fe87bdd8963cf96d748319756fe017b4edb49e52649b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9722.tmp

Filesize
1KB

MD5
cdf5683344404764a0f3592e9db8a5a1

SHA1
6705943b404de237cdd7080c05af25e2b1b6410c

SHA256
1ea0af7c86be3e61c281ada0470c6dcf178834380def1903b5bb78b49440ffff

SHA512
23c56873ca8520784cc1d6b0b4211b373fff6fb429872932e5274801d3b9d786566877cd16d1ffa0adca8c7aebb0b935701a0c071073edfbdb319002f99a182b

Download Submit
memory/2356-0-0x00000000749F1000-0x00000000749F2000-memory.dmp

Filesize
4KB

Download
memory/2356-1-0x00000000749F0000-0x0000000074F9B000-memory.dmp

Filesize
5.7MB

Download
memory/2356-2-0x00000000749F0000-0x0000000074F9B000-memory.dmp

Filesize
5.7MB

Download
memory/2356-13-0x00000000749F0000-0x0000000074F9B000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads