njrat | 91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853

General

Target

91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe
Size

117KB
MD5

ad287daf81b42f5d4b31fe887d8e3df6
SHA1

294f012ba425ac0261fa9479b40dbd7ecd144724
SHA256

91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853
SHA512

262e84e86f8e822df1100c7a09e23b0ba5a72e94c47b9f251cdef80529c5c57ea64d9e3d4cbdc270901369ba3ac7bd6f2dd2042c4cdfafc5c967d8dc6c4fde26
SSDEEP

3072:7E8AHzBgZC5gRFYU2zmMcVinx7754KmUa6Qo:uyggR+U2HoiV14KmUF

Score

10^/10

njrat mx discovery evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

mx

C2

209.200.39.186:1172

Mutex

7c5ab2d4b3ee0e1b3e9cf876e75dff1f

Attributes

reg_key
7c5ab2d4b3ee0e1b3e9cf876e75dff1f
splitter
|'|'|

Signatures

Njrat family
njrat
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

Processes:

netsh.exe

pid	Process
1528	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe

Drops startup file 2 IoCs

Processes:

memo.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7c5ab2d4b3ee0e1b3e9cf876e75dff1f.exe	memo.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7c5ab2d4b3ee0e1b3e9cf876e75dff1f.exe	memo.exe

Executes dropped EXE 2 IoCs

Processes:

memo.exememo.exe

pid	Process
4384	memo.exe
3192	memo.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

memo.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\7c5ab2d4b3ee0e1b3e9cf876e75dff1f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\memo.exe\" .."	memo.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7c5ab2d4b3ee0e1b3e9cf876e75dff1f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\memo.exe\" .."	memo.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exememo.exe

description	pid	Process	procid_target
PID 636 set thread context of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 4384 set thread context of 3192	4384	memo.exe	84

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

Processes:

netsh.exe

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 5 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

Processes:

91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exememo.exememo.exenetsh.exe91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	memo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	memo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

Processes:

memo.exe

pid	Process
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe
3192	memo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

memo.exe

description	pid	Process
Token: SeDebugPrivilege	3192	memo.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exememo.exememo.exe

description	pid	Process	procid_target
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 636 wrote to memory of 396	636	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	82
PID 396 wrote to memory of 4384	396	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	83
PID 396 wrote to memory of 4384	396	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	83
PID 396 wrote to memory of 4384	396	91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe	83
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 4384 wrote to memory of 3192	4384	memo.exe	84
PID 3192 wrote to memory of 1528	3192	memo.exe	85
PID 3192 wrote to memory of 1528	3192	memo.exe	85
PID 3192 wrote to memory of 1528	3192	memo.exe	85

C:\Users\Admin\AppData\Local\Temp\91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe
"C:\Users\Admin\AppData\Local\Temp\91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:636
- C:\Users\Admin\AppData\Local\Temp\91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe
  "C:\Users\Admin\AppData\Local\Temp\91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:396
- - C:\Users\Admin\AppData\Local\Temp\memo.exe
    "C:\Users\Admin\AppData\Local\Temp\memo.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4384
  - - C:\Users\Admin\AppData\Local\Temp\memo.exe
      "C:\Users\Admin\AppData\Local\Temp\memo.exe"
      4⤵
      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:3192
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\memo.exe" "memo.exe" ENABLE
        5⤵
        Modifies Windows Firewall
        Event Triggered Execution: Netsh Helper DLL
        System Location Discovery: System Language Discovery
        
        PID:1528

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:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853.exe.log

Filesize
312B

MD5
6dba4702b346903da02f7dd9e839a128

SHA1
d69f255866f30a87c9eca8312d425c47059bf15e

SHA256
29d145faac0201870c39b9119894f78694a776e03fc8f79349bdf92e56a65bcd

SHA512
33afef187e806838717238881aaaf41272f8b484fcfe97a85057fd43a7eeb119df813d6023d2ee770aa22a067f7e9d532dd1c30b512f9c48b76f838615863e1d

Download Submit
C:\Users\Admin\AppData\Local\Temp\memo.exe

Filesize
117KB

MD5
ad287daf81b42f5d4b31fe887d8e3df6

SHA1
294f012ba425ac0261fa9479b40dbd7ecd144724

SHA256
91f915d7b7de6d838a41c4aa75443b6fc503639960b9cd41b7a0a6d071830853

SHA512
262e84e86f8e822df1100c7a09e23b0ba5a72e94c47b9f251cdef80529c5c57ea64d9e3d4cbdc270901369ba3ac7bd6f2dd2042c4cdfafc5c967d8dc6c4fde26

Download Submit
memory/396-10-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/396-18-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/396-3-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/396-7-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/396-8-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/636-6-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/636-0-0x0000000075372000-0x0000000075373000-memory.dmp

Filesize
4KB

Download
memory/636-1-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/636-2-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/3192-26-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/3192-27-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/3192-29-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/4384-19-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/4384-20-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download
memory/4384-25-0x0000000075370000-0x0000000075921000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads