njrat | 4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137

General

Target

4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Size

998KB
MD5

e7aabc508404882b3889066663c430d0
SHA1

2acee9bdbcce973f9efc792d8f4a58f233334d14
SHA256

4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137
SHA512

7dfc10a712885b93b67abc006f1d2830fe605de07f04fe49df1f84c58559d22491d75f9f0f8d37bda99fa6835e83f0c36019e14c476048f587c8b0c021ed6ddc
SSDEEP

12288:fMSApJVYG5lDLyjsb0eOzkv4R7QnvUUilQ35+6G75V9VXKFUoanf:fnsJ39LyjbJkQFMhmC+6GD96yf

Score

10^/10

njrat xred backdoor discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

xred

C2

xred.mooo.com

Attributes

email
[email protected]
payload_url
http://freedns.afraid.org/api/?action=getdyndns&sha=a30fa98efc092684e8d1c5cff797bcc613562978

https://docs.google.com/uc?id=0BxsMXGfPIZfSVlVsOGlEVGxuZVk&export=download

https://www.dropbox.com/s/n1w4p8gc6jzo0sg/SUpdate.ini?dl=1

http://xred.site50.net/syn/SUpdate.ini

https://docs.google.com/uc?id=0BxsMXGfPIZfSVzUyaHFYVkQxeFk&export=download

https://www.dropbox.com/s/zhp1b06imehwylq/Synaptics.rar?dl=1

http://xred.site50.net/syn/Synaptics.rar

https://docs.google.com/uc?id=0BxsMXGfPIZfSTmlVYkxhSDg5TzQ&export=download

https://www.dropbox.com/s/fzj752whr3ontsm/SSLLibrary.dll?dl=1

http://xred.site50.net/syn/SSLLibrary.dll

Signatures

Njrat family
njrat
Xred
Xred is backdoor written in Delphi.
backdoor xred
Xred family
xred
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
288	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4eb37852a0eff3d12ee195891381805c.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\4eb37852a0eff3d12ee195891381805c.exe	server.exe

Executes dropped EXE 4 IoCs

pid	Process
2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
2648	Synaptics.exe
1968	._cache_Synaptics.exe
1640	server.exe

Loads dropped DLL 9 IoCs

pid	Process
1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
2648	Synaptics.exe
2648	Synaptics.exe
2648	Synaptics.exe
2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\4eb37852a0eff3d12ee195891381805c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\4eb37852a0eff3d12ee195891381805c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Synaptics Pointing Device Driver = "C:\\ProgramData\\Synaptics\\Synaptics.exe"	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 7 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	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	._cache_Synaptics.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EXCEL.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
664	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1968	._cache_Synaptics.exe
2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
1640	server.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	._cache_Synaptics.exe
Token: SeDebugPrivilege	2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
Token: SeDebugPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe
Token: 33	1640	server.exe
Token: SeIncBasePriorityPrivilege	1640	server.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
664	EXCEL.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1156 wrote to memory of 2620	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	30
PID 1156 wrote to memory of 2620	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	30
PID 1156 wrote to memory of 2620	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	30
PID 1156 wrote to memory of 2620	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	30
PID 1156 wrote to memory of 2648	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	31
PID 1156 wrote to memory of 2648	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	31
PID 1156 wrote to memory of 2648	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	31
PID 1156 wrote to memory of 2648	1156	4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	31
PID 2648 wrote to memory of 1968	2648	Synaptics.exe	32
PID 2648 wrote to memory of 1968	2648	Synaptics.exe	32
PID 2648 wrote to memory of 1968	2648	Synaptics.exe	32
PID 2648 wrote to memory of 1968	2648	Synaptics.exe	32
PID 2620 wrote to memory of 1640	2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	35
PID 2620 wrote to memory of 1640	2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	35
PID 2620 wrote to memory of 1640	2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	35
PID 2620 wrote to memory of 1640	2620	._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe	35
PID 1640 wrote to memory of 288	1640	server.exe	37
PID 1640 wrote to memory of 288	1640	server.exe	37
PID 1640 wrote to memory of 288	1640	server.exe	37
PID 1640 wrote to memory of 288	1640	server.exe	37

C:\Users\Admin\AppData\Local\Temp\4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
"C:\Users\Admin\AppData\Local\Temp\4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Users\Admin\AppData\Local\Temp\._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe
  "C:\Users\Admin\AppData\Local\Temp\._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2620
- - C:\Users\Admin\AppData\Local\Temp\server.exe
    "C:\Users\Admin\AppData\Local\Temp\server.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1640
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:288
- C:\ProgramData\Synaptics\Synaptics.exe
  "C:\ProgramData\Synaptics\Synaptics.exe" InjUpdate
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2648
- - C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe
    "C:\Users\Admin\AppData\Local\Temp\._cache_Synaptics.exe" InjUpdate
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1968

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /automation -Embedding
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:664

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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:\ProgramData\Synaptics\Synaptics.exe

Filesize
998KB

MD5
e7aabc508404882b3889066663c430d0

SHA1
2acee9bdbcce973f9efc792d8f4a58f233334d14

SHA256
4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137

SHA512
7dfc10a712885b93b67abc006f1d2830fe605de07f04fe49df1f84c58559d22491d75f9f0f8d37bda99fa6835e83f0c36019e14c476048f587c8b0c021ed6ddc

Download Submit
C:\Users\Admin\AppData\Local\Temp\sc4Si35b.xlsm

Filesize
17KB

MD5
e566fc53051035e1e6fd0ed1823de0f9

SHA1
00bc96c48b98676ecd67e81a6f1d7754e4156044

SHA256
8e574b4ae6502230c0829e2319a6c146aebd51b7008bf5bbfb731424d7952c15

SHA512
a12f56ff30ea35381c2b8f8af2446cf1daa21ee872e98cad4b863db060acd4c33c5760918c277dadb7a490cb4ca2f925d59c70dc5171e16601a11bc4a6542b04

Download Submit
\Users\Admin\AppData\Local\Temp\._cache_4f9e3d481e4de881790b9736df2c1771fd8d3823ceed47e2681b498184150137N.exe

Filesize
244KB

MD5
0ae9347f02737113842f37809172da96

SHA1
242a20e1ffdf9fef0b5682cd2bb6738fe8097600

SHA256
7de73d47d9a917d4ebf25264af7144794f69c2046fa2412f4af1f93eb71be032

SHA512
78cc2b7372c5a5c21d9759311772e1b4e82627da278ee9d2d759d2ecceaf9db09ec20bff3f998b3966b6533d860d0c3828581d169ec163fa6bf941955afa9690

Download Submit
memory/664-55-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1156-0-0x0000000000260000-0x0000000000261000-memory.dmp

Filesize
4KB

Download
memory/1156-29-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/2620-30-0x00000000020E0000-0x0000000002120000-memory.dmp

Filesize
256KB

Download
memory/2648-44-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/2648-75-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/2648-77-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download
memory/2648-109-0x0000000000400000-0x00000000004FF000-memory.dmp

Filesize
1020KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads