njrat | f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4

General

Target

f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe
Size

346KB
MD5

776211eed31b6a8ea3539ac1d822362c
SHA1

b18225f3217536c802d43d9e4a0ac8ac22a90109
SHA256

f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4
SHA512

c067fd43414e3ccb87cef9b707125634be0ba5f0f6aa6e13a63de791ff2cb4a1b0ebb63fd174a5940f4e6aab0c1e349977da6e2eda633bd64ec1502a38f3d3f4

Score

10^/10

njrat xtremerat hacked evasion persistence rat spyware trojan upx

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

windownssystem.ddns.net:1010

Mutex

301b5fcf8ce2fab8868e80b6c1f912fe

Attributes

reg_key
301b5fcf8ce2fab8868e80b6c1f912fe
splitter
|'|'|

Signatures

Detect XtremeRAT Payload 4 IoCs

Processes:

resource	yara_rule
behavioral2/memory/2516-115-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/2708-116-0x0000000000000000-mapping.dmp	family_xtremerat
behavioral2/memory/2516-117-0x0000000010000000-0x0000000010059000-memory.dmp	family_xtremerat
behavioral2/memory/2708-118-0x0000000010000000-0x0000000010059000-memory.dmp	family_xtremerat

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 2 IoCs

Processes:

562Server.exeSystem.exe

pid process

2248 562Server.exe
912 System.exe
Modifies Installed Components in the registry 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
2248	562Server.exe
912	System.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/2516-117-0x0000000010000000-0x0000000010059000-memory.dmp	upx
behavioral2/memory/2708-118-0x0000000010000000-0x0000000010059000-memory.dmp	upx

Drops startup file 2 IoCs

Processes:

System.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe	System.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\301b5fcf8ce2fab8868e80b6c1f912fe.exe	System.exe

Adds Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

LaunchWinApp.exeSystem.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	LaunchWinApp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MuAwaYOriginal\\MuAwaY.exe"	LaunchWinApp.exe
Key created	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run	LaunchWinApp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MuAwaYOriginal\\MuAwaY.exe"	LaunchWinApp.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2481030822-2828258191-1606198294-1000\Software\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .."	System.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\301b5fcf8ce2fab8868e80b6c1f912fe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\System.exe\" .."	System.exe

Drops file in System32 directory 2 IoCs

Processes:

f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe

description	ioc	process
File created	C:\Windows\SysWOW64\562Server.exe.exe	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe
File created	C:\Windows\SysWOW64\562Server.exe	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Program crash 4 IoCs

Processes:

WerFault.exeWerFault.exeWerFault.exeWerFault.exe

pid	pid_target	process	target process
3244	2516	WerFault.exe	svchost.exe
4084	2516	WerFault.exe	svchost.exe
2284	2708	WerFault.exe	LaunchWinApp.exe
996	2708	WerFault.exe	LaunchWinApp.exe

Suspicious behavior: EnumeratesProcesses 45 IoCs

Processes:

System.exe

pid	process
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe
912	System.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

System.exe

description pid process

Token: SeDebugPrivilege 912 System.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

LaunchWinApp.exe

pid process

2708 LaunchWinApp.exe

description	pid	process
Token: SeDebugPrivilege	912	System.exe

pid	process
2708	LaunchWinApp.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe562Server.exeSystem.exe

description	pid	process	target process
PID 2332 wrote to memory of 2516	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	svchost.exe
PID 2332 wrote to memory of 2516	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	svchost.exe
PID 2332 wrote to memory of 2516	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	svchost.exe
PID 2332 wrote to memory of 2516	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	svchost.exe
PID 2332 wrote to memory of 2708	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	LaunchWinApp.exe
PID 2332 wrote to memory of 2708	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	LaunchWinApp.exe
PID 2332 wrote to memory of 2708	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	LaunchWinApp.exe
PID 2332 wrote to memory of 2708	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	LaunchWinApp.exe
PID 2332 wrote to memory of 2248	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	562Server.exe
PID 2332 wrote to memory of 2248	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	562Server.exe
PID 2332 wrote to memory of 2248	2332	f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe	562Server.exe
PID 2248 wrote to memory of 912	2248	562Server.exe	System.exe
PID 2248 wrote to memory of 912	2248	562Server.exe	System.exe
PID 2248 wrote to memory of 912	2248	562Server.exe	System.exe
PID 912 wrote to memory of 1052	912	System.exe	netsh.exe
PID 912 wrote to memory of 1052	912	System.exe	netsh.exe
PID 912 wrote to memory of 1052	912	System.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe
"C:\Users\Admin\AppData\Local\Temp\f32fb1af5db650065e6e1d02ade5506e6c0903e4bbc9ff6ff2fbf94bef6ffba4.exe"
1⤵
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:2332

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
PID:2516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 548
3⤵
- Program crash
PID:3244

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 560
3⤵
- Program crash
PID:4084

C:\Windows\SysWOW64\LaunchWinApp.exe
C:\Windows\system32\LaunchWinApp.exe
2⤵
- Adds Run key to start application
- Suspicious use of SetWindowsHookEx
PID:2708

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 860
3⤵
- Program crash
PID:2284

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2708 -s 872
3⤵
- Program crash
PID:996

C:\Windows\SysWOW64\562Server.exe
"C:\Windows\system32\562Server.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:2248

C:\Users\Admin\AppData\Local\Temp\System.exe
"C:\Users\Admin\AppData\Local\Temp\System.exe"
3⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:912

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\System.exe" "System.exe" ENABLE
4⤵
PID:1052

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\System.exe
MD5
b207157c9f171556bf4d240c14aaba0e

SHA1
958f8d31b526ee0db15f40cee2963a6e0f84d627

SHA256
0b642220d2d6a965c347c2dc4b5fde794194c072a8621455ec3dcf68cba7f610

SHA512
5fe7d96ef9d8619ad180e76de3400d201614bf733f40095610bc0f24ea9c4747a4b05f398a046823a7e20a9410c11ff3cc177313999d53d236b98d5874805296

Download Submit
C:\Users\Admin\AppData\Local\Temp\System.exe
MD5
b207157c9f171556bf4d240c14aaba0e

SHA1
958f8d31b526ee0db15f40cee2963a6e0f84d627

SHA256
0b642220d2d6a965c347c2dc4b5fde794194c072a8621455ec3dcf68cba7f610

SHA512
5fe7d96ef9d8619ad180e76de3400d201614bf733f40095610bc0f24ea9c4747a4b05f398a046823a7e20a9410c11ff3cc177313999d53d236b98d5874805296

Download Submit
C:\Windows\SysWOW64\562Server.exe
MD5
b207157c9f171556bf4d240c14aaba0e

SHA1
958f8d31b526ee0db15f40cee2963a6e0f84d627

SHA256
0b642220d2d6a965c347c2dc4b5fde794194c072a8621455ec3dcf68cba7f610

SHA512
5fe7d96ef9d8619ad180e76de3400d201614bf733f40095610bc0f24ea9c4747a4b05f398a046823a7e20a9410c11ff3cc177313999d53d236b98d5874805296

Download Submit
C:\Windows\SysWOW64\562Server.exe
MD5
b207157c9f171556bf4d240c14aaba0e

SHA1
958f8d31b526ee0db15f40cee2963a6e0f84d627

SHA256
0b642220d2d6a965c347c2dc4b5fde794194c072a8621455ec3dcf68cba7f610

SHA512
5fe7d96ef9d8619ad180e76de3400d201614bf733f40095610bc0f24ea9c4747a4b05f398a046823a7e20a9410c11ff3cc177313999d53d236b98d5874805296

Download Submit
memory/912-123-0x0000000000000000-mapping.dmp

Download
memory/912-127-0x00000000021E0000-0x00000000021E1000-memory.dmp

Filesize
4KB

Download
memory/912-128-0x00000000021E3000-0x00000000021E5000-memory.dmp

Filesize
8KB

Download
memory/1052-126-0x0000000000000000-mapping.dmp

Download
memory/2248-119-0x0000000000000000-mapping.dmp

Download
memory/2248-122-0x0000000002D50000-0x0000000002D51000-memory.dmp

Filesize
4KB

Download
memory/2516-115-0x0000000000000000-mapping.dmp

Download
memory/2516-117-0x0000000010000000-0x0000000010059000-memory.dmp

Filesize
356KB

Download
memory/2708-118-0x0000000010000000-0x0000000010059000-memory.dmp

Filesize
356KB

Download
memory/2708-116-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads