njrat | e2798e218dd3dc6dcef7a86a0f143acbbbb6d6b4a3aff594b1186c878fecc91a

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
25/04/2024, 01:01

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General

Target
b54147f2898416a133000ca23f2f698d.exe
Size 107KB
Sample240425-bc8fjace48
SHA256 e2798e218dd3dc6dcef7a86a0f143acbbbb6d6b4a3aff594b1186c878fecc91a
MD5 b54147f2898416a133000ca23f2f698d
SHA1 481632cb0bc1b7e9073140a882e5412278044533
SHA512 0eacf4f94c7de892ddf9357a54b49489723d4c04e3c6652adf98542f5734d932808a253ede96e4c0797d9adb37e07723be847c78233317c7c854752115c7769d
SSDEEP 1536:orp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4xtKegoNJ:w5eznsjsguGDFqGx8egoNJ
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

neuf

doddyfire.linkpc.net:10000

Mutex

e1a87040f2026369a233f9ae76301b7b

Attributes

reg_key
e1a87040f2026369a233f9ae76301b7b
splitter
|'|'|

Signatures

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
4812	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	b54147f2898416a133000ca23f2f698d.exe

Executes dropped EXE 2 IoCs

pid	Process
5048	chargeable.exe
1560	chargeable.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-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	b54147f2898416a133000ca23f2f698d.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1132431369-515282257-1998160155-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b54147f2898416a133000ca23f2f698d.exe"	b54147f2898416a133000ca23f2f698d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5048 set thread context of 1560	5048	chargeable.exe	96

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 34 IoCs

description	pid	Process
Token: SeDebugPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: 33	1560	chargeable.exe
Token: SeIncBasePriorityPrivilege	1560	chargeable.exe
Token: SeManageVolumePrivilege	3268	svchost.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4396 wrote to memory of 5048	4396	b54147f2898416a133000ca23f2f698d.exe	94
PID 4396 wrote to memory of 5048	4396	b54147f2898416a133000ca23f2f698d.exe	94
PID 4396 wrote to memory of 5048	4396	b54147f2898416a133000ca23f2f698d.exe	94
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 5048 wrote to memory of 1560	5048	chargeable.exe	96
PID 1560 wrote to memory of 4812	1560	chargeable.exe	98
PID 1560 wrote to memory of 4812	1560	chargeable.exe	98
PID 1560 wrote to memory of 4812	1560	chargeable.exe	98

C:\Users\Admin\AppData\Local\Temp\b54147f2898416a133000ca23f2f698d.exe
"C:\Users\Admin\AppData\Local\Temp\b54147f2898416a133000ca23f2f698d.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4396
- C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
  "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1560
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:4812

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe
1⤵
PID:1084

C:\Windows\System32\svchost.exe
C:\Windows\System32\svchost.exe -k UnistackSvcGroup
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3268

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

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

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

chargeable.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\chargeable.exe.log
Size 400B
SHA256 c7effe9cb81a70d738dee863991afefab040290d4c4b78b4202383bcb9f88fcd
MD5 0a9b4592cd49c3c21f6767c2dabda92f
SHA1 f534297527ae5ccc0ecb2221ddeb8e58daeb8b74
SHA512 6b878df474e5bbfb8e9e265f15a76560c2ef151dcebc6388c82d7f6f86ffaf83f5ade5a09f1842e493cb6c8fd63b0b88d088c728fd725f7139f965a5ee332307
MD5 SHA1 SHA512

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chargeable.exe

Path C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
Size 107KB
SHA256 fe8cbbc530453e93f520943d645e887eaef1ac89d3480df8192c3e3b78ac4ef1
MD5 4fdf1debf345d40e0e207780cddae822
SHA1 198dba2e005971d26cfdee0b57f076c40d33a5ed
SHA512 a7addb9e98801c2fd55c0ec4c4a4f5762f3f0b320c2b1d0f300abe1ef1ffbc6a069eb6a66eebc174d76d98c52329e10395715a59570ee8cc59b405bd8f0f0fed
SSDEEP 1536:orp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4xtKegoNO:w5eznsjsguGDFqGx8egoNO
MD5 SHA1 SHA512 SSDEEP

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memory/1560-21-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/1560-29-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/1560-28-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/1560-27-0x00000000016F0000-0x0000000001700000-memory.dmp

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memory/1560-26-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/3268-46-0x000001782AE40000-0x000001782AE50000-memory.dmp

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memory/3268-62-0x0000017833170000-0x0000017833171000-memory.dmp

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memory/3268-64-0x00000178331A0000-0x00000178331A1000-memory.dmp

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memory/3268-65-0x00000178331A0000-0x00000178331A1000-memory.dmp

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memory/3268-66-0x00000178332B0000-0x00000178332B1000-memory.dmp

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memory/4396-17-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/4396-2-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/4396-1-0x0000000000BE0000-0x0000000000BF0000-memory.dmp

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memory/4396-0-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/5048-20-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/5048-18-0x0000000074E20000-0x00000000753D1000-memory.dmp

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memory/5048-19-0x0000000001AC0000-0x0000000001AD0000-memory.dmp

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memory/5048-25-0x0000000074E20000-0x00000000753D1000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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