nanocore | 1929f090046f4af22edd3ad430212bd054015cef995ce911ef7d61119452cd2b

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
23-06-2024 13:18

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General

Target

skid.exe
Size

671KB
MD5

ef230cad6ef26492b09c363660eed91e
SHA1

a995d2289b6080644c7335f3210be831239c5f81
SHA256

1929f090046f4af22edd3ad430212bd054015cef995ce911ef7d61119452cd2b
SHA512

d01bcc821b7523e7b09a9bb675deb10bbcfc18a62038cd039490c3bc1e6eb84a3bfcab5153a0c54507bddac0bc9d5e87e62d0b10e2ef1f5636d590bdfa3b3ef1
SSDEEP

12288:HLV6Btpmk+SwAJ8VAMj6fQqYM5wgqpCCi49Qgew1d1DFBDlgYx0idFjqaNfDRUqp:rApf+Swy8V6fYGqhTr1dtFBDlgyjVtDl

Score

10^/10

nanocore 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
Adds Run key to start application 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112

Processes:

skid.exe

description ioc process

Set value (str) \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsv.exe" skid.exe
Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

skid.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA skid.exe
Drops file in Program Files directory 2 IoCs

Processes:

skid.exe

description ioc process

File created C:\Program Files (x86)\DHCP Service\dhcpsv.exe skid.exe
File opened for modification C:\Program Files (x86)\DHCP Service\dhcpsv.exe skid.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

Processes:

schtasks.exeschtasks.exe

pid process

4144 schtasks.exe
2372 schtasks.exe
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

skid.exe

pid process

1836 skid.exe
1836 skid.exe
1836 skid.exe
1836 skid.exe
1836 skid.exe
1836 skid.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

skid.exe

pid process

1836 skid.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

skid.exe

description pid process

Token: SeDebugPrivilege 1836 skid.exe
Token: SeDebugPrivilege 1836 skid.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DHCP Service = "C:\\Program Files (x86)\\DHCP Service\\dhcpsv.exe"	skid.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	skid.exe

description	ioc	process
File created	C:\Program Files (x86)\DHCP Service\dhcpsv.exe	skid.exe
File opened for modification	C:\Program Files (x86)\DHCP Service\dhcpsv.exe	skid.exe

pid	process
4144	schtasks.exe
2372	schtasks.exe

pid	process
1836	skid.exe
1836	skid.exe
1836	skid.exe
1836	skid.exe
1836	skid.exe
1836	skid.exe

pid	process
1836	skid.exe

description	pid	process
Token: SeDebugPrivilege	1836	skid.exe
Token: SeDebugPrivilege	1836	skid.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

skid.exe

description	pid	process	target process
PID 1836 wrote to memory of 2372	1836	skid.exe	schtasks.exe
PID 1836 wrote to memory of 2372	1836	skid.exe	schtasks.exe
PID 1836 wrote to memory of 2372	1836	skid.exe	schtasks.exe
PID 1836 wrote to memory of 4144	1836	skid.exe	schtasks.exe
PID 1836 wrote to memory of 4144	1836	skid.exe	schtasks.exe
PID 1836 wrote to memory of 4144	1836	skid.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\skid.exe
"C:\Users\Admin\AppData\Local\Temp\skid.exe"
1⤵
- 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:1836

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service" /xml "C:\Users\Admin\AppData\Local\Temp\tmp395F.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2372

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "DHCP Service Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmp39AE.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:4144

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp395F.tmp
Filesize
1KB

MD5
d03c4f78287a8c2ba11b867d222f3592

SHA1
bb1f39da40cff5636a67833a90114093394acd52

SHA256
aaef2431c0a7c272ddef710c8b25aea6afda0aaa2a9b06419b9ee5168d91bf35

SHA512
e49c5390cdf50432514974542fa0e10872b67bc69c2119174ecbac0b0fa6fd7d3d7ce179e9a47e51681dece3cffd0d6b9d11d2aa106a8e3a1aaf7252455e53ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp39AE.tmp
Filesize
1KB

MD5
a77c223a0fc492dccd6fb9975f7a8766

SHA1
5e813636ae9b8138d78919348a5da3a6e8bd74b5

SHA256
589df7325d42409c50827600fedb240171ee4bdab85916474a37800c2382829e

SHA512
315cea8fde3c594404f5d3c96c710af1214cff6d08ccdb40634a739e108ff810e02624735a2b8c3e3720157b4a55327f317c3c23c3a681b46b9ab0f19060f7c0

Download Submit
memory/1836-0-0x0000000074D02000-0x0000000074D03000-memory.dmp

Filesize
4KB

Download
memory/1836-1-0x0000000074D00000-0x00000000752B1000-memory.dmp

Filesize
5.7MB

Download
memory/1836-2-0x0000000074D00000-0x00000000752B1000-memory.dmp

Filesize
5.7MB

Download
memory/1836-10-0x0000000074D00000-0x00000000752B1000-memory.dmp

Filesize
5.7MB

Download
memory/1836-11-0x0000000074D00000-0x00000000752B1000-memory.dmp

Filesize
5.7MB

Download
memory/1836-12-0x0000000074D02000-0x0000000074D03000-memory.dmp

Filesize
4KB

Download
memory/1836-13-0x0000000074D00000-0x00000000752B1000-memory.dmp

Filesize
5.7MB

Download
memory/1836-14-0x0000000074D00000-0x00000000752B1000-memory.dmp

Filesize
5.7MB

Download