nanocore | 1929f090046f4af22edd3ad430212bd054015cef995ce911ef7d61119452cd2b

Analysis

max time kernel
147s
max time network
150s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-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\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.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 opened for modification C:\Program Files (x86)\TCP Subsystem\tcpss.exe skid.exe
File created C:\Program Files (x86)\TCP Subsystem\tcpss.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

2480 schtasks.exe
2624 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

skid.exe

pid process

2280 skid.exe
2280 skid.exe
2280 skid.exe
2280 skid.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

skid.exe

pid process

2280 skid.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

skid.exe

description pid process

Token: SeDebugPrivilege 2280 skid.exe
Token: SeDebugPrivilege 2280 skid.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Subsystem = "C:\\Program Files (x86)\\TCP Subsystem\\tcpss.exe"	skid.exe

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

description	ioc	process
File opened for modification	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	skid.exe
File created	C:\Program Files (x86)\TCP Subsystem\tcpss.exe	skid.exe

pid	process
2480	schtasks.exe
2624	schtasks.exe

pid	process
2280	skid.exe
2280	skid.exe
2280	skid.exe
2280	skid.exe

pid	process
2280	skid.exe

description	pid	process
Token: SeDebugPrivilege	2280	skid.exe
Token: SeDebugPrivilege	2280	skid.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

skid.exe

description	pid	process	target process
PID 2280 wrote to memory of 2480	2280	skid.exe	schtasks.exe
PID 2280 wrote to memory of 2480	2280	skid.exe	schtasks.exe
PID 2280 wrote to memory of 2480	2280	skid.exe	schtasks.exe
PID 2280 wrote to memory of 2480	2280	skid.exe	schtasks.exe
PID 2280 wrote to memory of 2624	2280	skid.exe	schtasks.exe
PID 2280 wrote to memory of 2624	2280	skid.exe	schtasks.exe
PID 2280 wrote to memory of 2624	2280	skid.exe	schtasks.exe
PID 2280 wrote to memory of 2624	2280	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:2280

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFF46.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2480

C:\Windows\SysWOW64\schtasks.exe
"schtasks.exe" /create /f /tn "TCP Subsystem Task" /xml "C:\Users\Admin\AppData\Local\Temp\tmpFFD3.tmp"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2624

Network

MITRE ATT&CK Matrix ATT&CK v13

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpFF46.tmp
Filesize
1KB

MD5
d03c4f78287a8c2ba11b867d222f3592

SHA1
bb1f39da40cff5636a67833a90114093394acd52

SHA256
aaef2431c0a7c272ddef710c8b25aea6afda0aaa2a9b06419b9ee5168d91bf35

SHA512
e49c5390cdf50432514974542fa0e10872b67bc69c2119174ecbac0b0fa6fd7d3d7ce179e9a47e51681dece3cffd0d6b9d11d2aa106a8e3a1aaf7252455e53ae

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFFD3.tmp
Filesize
1KB

MD5
4b7ef560289c0f62d0baf6f14f48a57a

SHA1
8331acb90dde588aa3196919f6e847f398fd06d1

SHA256
062844155306130d6fafc4fe10ac9e5ddd2ed462532b729c50cdc979c0d83207

SHA512
ecaa27c4b703d95f9f9b37d8c339982970482e7dab968c2010e0aa644bbfa31973111aafb827565af30c423d1d14e4ff997ec149614e713ff7ef3456894d02d8

Download Submit
memory/2280-0-0x0000000074571000-0x0000000074572000-memory.dmp

Filesize
4KB

Download
memory/2280-1-0x0000000074570000-0x0000000074B1B000-memory.dmp

Filesize
5.7MB

Download
memory/2280-2-0x0000000074570000-0x0000000074B1B000-memory.dmp

Filesize
5.7MB

Download
memory/2280-10-0x0000000074570000-0x0000000074B1B000-memory.dmp

Filesize
5.7MB

Download