njrat | 1092849f2f8f3fb0d1f89f0bff367d0a0f1f138fe5eb45b56f0a970b1677e4be

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 15:11

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General

Target
6ADD6FA3EA74FFCBA90B3630ACDE5182.exe
Size 76KB
Sample240128-skshqaccb3
SHA256 1092849f2f8f3fb0d1f89f0bff367d0a0f1f138fe5eb45b56f0a970b1677e4be
MD5 6add6fa3ea74ffcba90b3630acde5182
SHA1 cd202aa598e13a57e6d2bb8c614eb3122d6fb280
SHA512 b57f846773f78fda8ba5c8b4b718d092d9037df788d0ea41954d6170bc1e35391ab10d8d12658b8be26e31a16deb78e665c74d5fdc44d11c8bf8216af3ff794b
SSDEEP 1536:I8R7MJTttj9U5XvdKygf7oFOepKmqwBCmDqorCMCX9QKkW:lCftjK5FKZf+OfwcmZ2RX9QLW
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat svchost persistence trojan

Malware Config

Extracted

Family

njrat

Version

Njrat 0.7 Golden By Hassan Amiri

Botnet

Svchost

95.173.255.238:4444

Mutex

Windows Defender

Attributes

reg_key
Windows Defender
splitter
|Hassan|

Signatures

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

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	Server.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4120	Server.exe
1668	Svchost.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-1-5-21-3803511929-1339359695-2191195476-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Svchost.exe\" .."	Svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Defender = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Svchost.exe\" .."	Svchost.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000_Classes\Local Settings	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe

Runs .reg file with regedit 1 IoCs

pid	Process
2804	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
5072	powershell.exe
5072	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

pid	Process
4120	Server.exe
1668	Svchost.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	5072	powershell.exe
Token: SeDebugPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe
Token: 33	1668	Svchost.exe
Token: SeIncBasePriorityPrivilege	1668	Svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 464 wrote to memory of 5072	464	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe	85
PID 464 wrote to memory of 5072	464	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe	85
PID 464 wrote to memory of 4120	464	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe	86
PID 464 wrote to memory of 4120	464	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe	86
PID 464 wrote to memory of 4120	464	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe	86
PID 464 wrote to memory of 2804	464	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe	88
PID 464 wrote to memory of 2804	464	6ADD6FA3EA74FFCBA90B3630ACDE5182.exe	88
PID 4120 wrote to memory of 1668	4120	Server.exe	101
PID 4120 wrote to memory of 1668	4120	Server.exe	101
PID 4120 wrote to memory of 1668	4120	Server.exe	101

C:\Users\Admin\AppData\Local\Temp\6ADD6FA3EA74FFCBA90B3630ACDE5182.exe
"C:\Users\Admin\AppData\Local\Temp\6ADD6FA3EA74FFCBA90B3630ACDE5182.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:464
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAGUAYQB6ACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHUAZgBsACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHUAdQBsACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGQAZwBnACMAPgA="
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5072
- C:\Users\Admin\AppData\Local\Temp\Server.exe
  "C:\Users\Admin\AppData\Local\Temp\Server.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of WriteProcessMemory
  PID:4120
- - C:\Users\Admin\AppData\Local\Temp\Svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\Svchost.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of AdjustPrivilegeToken
    PID:1668
- C:\Windows\regedit.exe
  "regedit.exe" "C:\Users\Admin\AppData\Local\Temp\ZulaHAX.reg"
  2⤵
  - Runs .reg file with regedit
  PID:2804

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

Server.exe

Path C:\Users\Admin\AppData\Local\Temp\Server.exe
Size 43KB
SHA256 c69616a4c334e550278446c2404e5ac5b896938179ade3a64afcfdf19b254e21
MD5 3d5e301c8221356991a5522034c5b907
SHA1 d71baabd5d474aa4aabc865e2ca73db578c71a6d
SHA512 9bb1feab4689858fd3034b64d9549ecc60a54a7c8f7e70eff22730855e375921c27901dcdc50e812266b1a80a269dfab2a4df82e8feba65e51e99d162501fc13
SSDEEP 384:7Zyn5/YdM9qIyrCAjDyYUMxsgl4DJW9D9O5UE5QzwBlpJNakkjh/TzF7pWnCFgrW:1xCwFrFDPpsltvQO+T+L
MD5 SHA1 SHA512 SSDEEP

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ZulaHAX.reg

Path C:\Users\Admin\AppData\Local\Temp\ZulaHAX.reg
Size 281B
SHA256 3cf29dc045b5c52fca23b16e252dd4d19d18faae0a2ccae3c3543259bbb456dc
MD5 682e7f391ab8b4da7f66c32606e72d40
SHA1 246ba406ea9993dcef6c0924e4aa81acefc74209
SHA512 a1ddffc1f9441373b8c3214a221c840e420dadf4b9709578551886340d6a026bdaed142ea8dca164f536414292becad05795e9c8136d82ba1c3f9ff8bb0419d5
MD5 SHA1 SHA512

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__PSScriptPolicyTest_o0hists3.3y1.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_o0hists3.3y1.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/464-1-0x00007FFAAD270000-0x00007FFAADD31000-memory.dmp

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memory/464-2-0x000000001B010000-0x000000001B020000-memory.dmp

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memory/464-0-0x00000000004D0000-0x00000000004E8000-memory.dmp

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memory/464-16-0x00007FFAAD270000-0x00007FFAADD31000-memory.dmp

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memory/1668-47-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/1668-44-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/1668-43-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/4120-42-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/4120-28-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/4120-29-0x00000000747D0000-0x0000000074D81000-memory.dmp

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memory/5072-15-0x00007FFAAD270000-0x00007FFAADD31000-memory.dmp

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memory/5072-32-0x00007FFAAD270000-0x00007FFAADD31000-memory.dmp

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memory/5072-19-0x00000223DC350000-0x00000223DC372000-memory.dmp

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memory/5072-17-0x00000223DC310000-0x00000223DC320000-memory.dmp

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