nanocore | 44d014d02ff46e6732e5463240209b232aff16de47fa661980c7c44d6d5cdb7c

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
13-06-2024 01:32

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General

Target

a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
Size

1.0MB
MD5

a35fb224f8e7072b721b3a399ed6c1c0
SHA1

a17aa0bb8821c68823fb5d10306e97087533430c
SHA256

44d014d02ff46e6732e5463240209b232aff16de47fa661980c7c44d6d5cdb7c
SHA512

35b7b5ce2578dd4dfd67fc4ce059d72248a6c35e27065307e4530310e843983add91d59d4060f119b1f06f38ae21c6811b906255a5c558ba976d89165c1f5d05
SSDEEP

12288:baeA7wKKw7GTc3OLTc8Xvp2eLnkCIiX8K:bae8MTxLkmX8

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
Executes dropped EXE 3 IoCs

Processes:

skrs_.exeskrs_.exeskrs_.exe

pid process

2180 skrs_.exe
3052 skrs_.exe
2604 skrs_.exe
Loads dropped DLL 2 IoCs

Processes:

a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe

pid process

2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
Unexpected DNS network traffic destination 6 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.

Processes:

description ioc

Destination IP 23.249.162.143
Destination IP 23.249.162.143
Destination IP 23.249.162.143
Destination IP 23.249.162.143
Destination IP 23.249.162.143
Destination IP 23.249.162.143

pid	process
2180	skrs_.exe
3052	skrs_.exe
2604	skrs_.exe

pid	process
2032	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
2032	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe

description	ioc
Destination IP	23.249.162.143
Destination IP	23.249.162.143
Destination IP	23.249.162.143
Destination IP	23.249.162.143
Destination IP	23.249.162.143
Destination IP	23.249.162.143

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

skrs_.exeskrs_.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\INSTs_ = "wscript \"C:\\Users\\Admin\\Katr8s_\\skrs_.vbs\""	skrs_.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TCP Service = "C:\\Program Files (x86)\\TCP Service\\tcpsv.exe"	skrs_.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

skrs_.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA skrs_.exe

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

Suspicious use of SetThreadContext 3 IoCs

Processes:

a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exe

description	pid	process	target process
PID 2320 set thread context of 2032	2320	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
PID 2180 set thread context of 3052	2180	skrs_.exe	skrs_.exe
PID 3052 set thread context of 2604	3052	skrs_.exe	skrs_.exe

Drops file in Program Files directory 2 IoCs

Processes:

skrs_.exe

description ioc process

File created C:\Program Files (x86)\TCP Service\tcpsv.exe skrs_.exe
File opened for modification C:\Program Files (x86)\TCP Service\tcpsv.exe skrs_.exe

description	ioc	process
File created	C:\Program Files (x86)\TCP Service\tcpsv.exe	skrs_.exe
File opened for modification	C:\Program Files (x86)\TCP Service\tcpsv.exe	skrs_.exe

Drops file in Windows directory 4 IoCs

Processes:

a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exe

description	ioc	process
File opened for modification	C:\Windows\win.ini	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
File opened for modification	C:\Windows\win.ini	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
File opened for modification	C:\Windows\win.ini	skrs_.exe
File opened for modification	C:\Windows\win.ini	skrs_.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

skrs_.exe

pid process

2604 skrs_.exe
2604 skrs_.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

skrs_.exe

pid process

2604 skrs_.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

skrs_.exe

description pid process

Token: SeDebugPrivilege 2604 skrs_.exe
Suspicious use of SetWindowsHookEx 4 IoCs

Processes:

a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exe

pid process

2320 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
2032 a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
2180 skrs_.exe
3052 skrs_.exe

pid	process
2604	skrs_.exe
2604	skrs_.exe

pid	process
2604	skrs_.exe

description	pid	process
Token: SeDebugPrivilege	2604	skrs_.exe

pid	process
2320	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
2032	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
2180	skrs_.exe
3052	skrs_.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exea35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exeskrs_.exeskrs_.exe

description	pid	process	target process
PID 2320 wrote to memory of 2032	2320	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
PID 2320 wrote to memory of 2032	2320	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
PID 2320 wrote to memory of 2032	2320	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
PID 2320 wrote to memory of 2032	2320	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
PID 2032 wrote to memory of 2180	2032	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	skrs_.exe
PID 2032 wrote to memory of 2180	2032	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	skrs_.exe
PID 2032 wrote to memory of 2180	2032	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	skrs_.exe
PID 2032 wrote to memory of 2180	2032	a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe	skrs_.exe
PID 2180 wrote to memory of 3052	2180	skrs_.exe	skrs_.exe
PID 2180 wrote to memory of 3052	2180	skrs_.exe	skrs_.exe
PID 2180 wrote to memory of 3052	2180	skrs_.exe	skrs_.exe
PID 2180 wrote to memory of 3052	2180	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe
PID 3052 wrote to memory of 2604	3052	skrs_.exe	skrs_.exe

C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2320

C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a35fb224f8e7072b721b3a399ed6c1c0_JaffaCakes118.exe"
2⤵
- Loads dropped DLL
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2032

C:\Users\Admin\Katr8s_\skrs_.exe
"C:\Users\Admin\Katr8s_\skrs_.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2180

C:\Users\Admin\Katr8s_\skrs_.exe
"C:\Users\Admin\Katr8s_\skrs_.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052

C:\Users\Admin\Katr8s_\skrs_.exe
"C:\Users\Admin\Katr8s_\skrs_.exe"
5⤵
- Executes dropped EXE
- 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
PID:2604

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Windows\win.ini
Filesize
509B

MD5
d2a2412bddba16d60ec63bd9550d933f

SHA1
deb3d3bdc9055f0b4909b31d3048446848fae0e1

SHA256
79ff2254e38192be1626d05bec6c82e10c85e1cf91df7440c4c443380a1e877a

SHA512
8fecada107f72e59e43a689eeb8e2e18fa6134d0941c122025ed5bd00e5eab8114d7125bd289505be75641385a0c3f112d402c693f142c3ddc870d5fa8116e31

Download Submit
\Users\Admin\Katr8s_\skrs_.exe
Filesize
1.0MB

MD5
a35fb224f8e7072b721b3a399ed6c1c0

SHA1
a17aa0bb8821c68823fb5d10306e97087533430c

SHA256
44d014d02ff46e6732e5463240209b232aff16de47fa661980c7c44d6d5cdb7c

SHA512
35b7b5ce2578dd4dfd67fc4ce059d72248a6c35e27065307e4530310e843983add91d59d4060f119b1f06f38ae21c6811b906255a5c558ba976d89165c1f5d05

Download Submit
memory/2032-12-0x0000000076D30000-0x0000000076ED9000-memory.dmp

Filesize
1.7MB

Download
memory/2320-3-0x00000000002A0000-0x00000000002A8000-memory.dmp

Filesize
32KB

Download
memory/2320-4-0x0000000076D31000-0x0000000076E32000-memory.dmp

Filesize
1.0MB

Download
memory/2320-5-0x0000000076D30000-0x0000000076ED9000-memory.dmp

Filesize
1.7MB

Download
memory/2604-31-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2604-33-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download