njrat | 5df688f5538aca79256dc329400ac5fb412000930d21072433733fa8417b9913

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
06/08/2023, 12:31

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General

Target

075cfb9b060c21f8124eea51436f8282.exe
Size

266KB
MD5

075cfb9b060c21f8124eea51436f8282
SHA1

f0d7ce2d57a1d5886294d81b2e289f421c6106de
SHA256

5df688f5538aca79256dc329400ac5fb412000930d21072433733fa8417b9913
SHA512

b675e76109c03a4d834da998c5a8818d55637c9468c5024370f9fc5635e3f69f90e40da1597c7de66658cc3ab1a0dec94b9a2a433816897b908e48b3d0f58eff
SSDEEP

6144:PDKW1Lgbdl0TBBvjc/EPuO5Wo8XBZ44AMmlwScO/Hgij:Lh1Lk70Tnvjc8PtEo8XBZ47lwNcP

Score

10^/10

njrat hacked persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

HacKed

hgjdjs.0pe.kr:1

Mutex

Windows Update

Attributes

reg_key
Windows Update
splitter
|Hassan|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	Dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Java update.exe	Dllhost.exe

Executes dropped EXE 4 IoCs

pid	Process
2836	144.exe
2812	Dllhost.exe
2656	Server.exe
1028	Server.exe

Loads dropped DLL 1 IoCs

pid	Process
2396	075cfb9b060c21f8124eea51436f8282.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-722410544-1258951091-1992882075-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .."	Dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "\"C:\\Windows\\Dllhost.exe\" .."	Dllhost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Dllhost.exe	Dllhost.exe
File created	C:\Windows\Dllhost.exe	144.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2152	schtasks.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
2836	144.exe
2812	Dllhost.exe

Suspicious use of AdjustPrivilegeToken 32 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	075cfb9b060c21f8124eea51436f8282.exe
Token: SeDebugPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe
Token: 33	2812	Dllhost.exe
Token: SeIncBasePriorityPrivilege	2812	Dllhost.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2836	2396	075cfb9b060c21f8124eea51436f8282.exe	31
PID 2396 wrote to memory of 2836	2396	075cfb9b060c21f8124eea51436f8282.exe	31
PID 2396 wrote to memory of 2836	2396	075cfb9b060c21f8124eea51436f8282.exe	31
PID 2396 wrote to memory of 2836	2396	075cfb9b060c21f8124eea51436f8282.exe	31
PID 2836 wrote to memory of 2812	2836	144.exe	32
PID 2836 wrote to memory of 2812	2836	144.exe	32
PID 2836 wrote to memory of 2812	2836	144.exe	32
PID 2812 wrote to memory of 2152	2812	Dllhost.exe	33
PID 2812 wrote to memory of 2152	2812	Dllhost.exe	33
PID 2812 wrote to memory of 2152	2812	Dllhost.exe	33
PID 876 wrote to memory of 2656	876	taskeng.exe	37
PID 876 wrote to memory of 2656	876	taskeng.exe	37
PID 876 wrote to memory of 2656	876	taskeng.exe	37
PID 876 wrote to memory of 1028	876	taskeng.exe	38
PID 876 wrote to memory of 1028	876	taskeng.exe	38
PID 876 wrote to memory of 1028	876	taskeng.exe	38

C:\Users\Admin\AppData\Local\Temp\075cfb9b060c21f8124eea51436f8282.exe
"C:\Users\Admin\AppData\Local\Temp\075cfb9b060c21f8124eea51436f8282.exe"
1⤵
- Loads dropped DLL
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Users\Admin\AppData\Local\Temp\144.exe
  C:\Users\Admin\AppData\Local\Temp\144.exe
  2⤵
  - Executes dropped EXE
  - Drops file in Windows directory
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:2836
- - C:\Windows\Dllhost.exe
    "C:\Windows\Dllhost.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Drops file in Windows directory
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2812
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn Server /tr C:\Users\Admin\AppData\Local\Temp/Server.exe
      4⤵
      Creates scheduled task(s)
      PID:2152

C:\Windows\system32\taskeng.exe
taskeng.exe {7B7BB709-0C2B-4D44-A8A8-476D4CE2ADED} S-1-5-21-722410544-1258951091-1992882075-1000:MGKTNXNO\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:876
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:2656
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  C:\Users\Admin\AppData\Local\Temp/Server.exe
  2⤵
  - Executes dropped EXE
  PID:1028

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\144.exe

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

Download Submit
C:\Users\Admin\AppData\Local\Temp\144.exe

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

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

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

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

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

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

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

Download Submit
C:\Windows\Dllhost.exe

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

Download Submit
C:\Windows\Dllhost.exe

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

Download Submit
C:\Windows\Dllhost.exe

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

Download Submit
\Users\Admin\AppData\Local\Temp\144.exe

Filesize
25KB

MD5
be903fc3836d0a5912cae52a8c91204b

SHA1
b9da266846ecf050e283bfaab9e393a60537cd6f

SHA256
9a9ff65a67d6264ab7865f1c25035257998159c66f32ad366a2c16da47dc7abb

SHA512
8e32b2768dde7c6a92d85488298ba46c32f1b2b53bdbb646b7522dea10a9f117fc9906f9b58194bc9efbf36a318c7e788355d8b12989623201c93eaeaef5bfeb

Download Submit
memory/1028-153-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/1028-154-0x00000000009B0000-0x00000000009B8000-memory.dmp

Filesize
32KB

Download
memory/1028-155-0x000000001AFE0000-0x000000001B060000-memory.dmp

Filesize
512KB

Download
memory/1028-156-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2396-80-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-70-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-78-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-54-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2396-82-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-84-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-86-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-88-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-90-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-92-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-94-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-96-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-98-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-100-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-102-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-104-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-106-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-108-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-110-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-112-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-114-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-116-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-118-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-119-0x0000000004890000-0x00000000048D0000-memory.dmp

Filesize
256KB

Download
memory/2396-120-0x0000000001D30000-0x0000000001D31000-memory.dmp

Filesize
4KB

Download
memory/2396-74-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-72-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-76-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-55-0x0000000004890000-0x00000000048D0000-memory.dmp

Filesize
256KB

Download
memory/2396-53-0x0000000002070000-0x00000000020A2000-memory.dmp

Filesize
200KB

Download
memory/2396-56-0x00000000020A0000-0x00000000020D2000-memory.dmp

Filesize
200KB

Download
memory/2396-129-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2396-57-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-131-0x0000000004890000-0x00000000048D0000-memory.dmp

Filesize
256KB

Download
memory/2396-68-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-66-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-64-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-58-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-60-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-62-0x00000000020A0000-0x00000000020CB000-memory.dmp

Filesize
172KB

Download
memory/2396-141-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2656-148-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2656-151-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2656-150-0x00000000003C0000-0x0000000000440000-memory.dmp

Filesize
512KB

Download
memory/2656-149-0x0000000000370000-0x0000000000378000-memory.dmp

Filesize
32KB

Download
memory/2812-138-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2812-139-0x000000001AD40000-0x000000001ADC0000-memory.dmp

Filesize
512KB

Download
memory/2812-144-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2812-137-0x0000000001040000-0x0000000001048000-memory.dmp

Filesize
32KB

Download
memory/2836-140-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2836-130-0x000000001B150000-0x000000001B1D0000-memory.dmp

Filesize
512KB

Download
memory/2836-127-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download
memory/2836-128-0x000007FEF6110000-0x000007FEF6AFC000-memory.dmp

Filesize
9.9MB

Download
memory/2836-126-0x00000000008B0000-0x00000000008B8000-memory.dmp

Filesize
32KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads