njrat | e50b524e5ba146bbdda9b4d967e4f5cf1ec76dc5f3cd05d9b992f0e0a507ffef

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 22:26

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General

Target
1371d5fc9d41740e0d1df477b09e649c.exe
Size 116KB
Sample240611-2cg7fsthld
SHA256 e50b524e5ba146bbdda9b4d967e4f5cf1ec76dc5f3cd05d9b992f0e0a507ffef
MD5 1371d5fc9d41740e0d1df477b09e649c
SHA1 dcfcdb50052a5633494099778223fd5d1d3c6a8c
SHA512 f86d2f6c62ebcf65753f2bc973f7beffdf5c560b76e805b8353632731d5b7b09131024a4d1e16264dcd75495e2d7160995a542a54420e93f0a20301c0db4238d
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZ/l:P5eznsjsguGDFqGZ2rDLZ/l
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
4688	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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	1371d5fc9d41740e0d1df477b09e649c.exe

Executes dropped EXE 2 IoCs

pid	Process
640	chargeable.exe
468	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-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	1371d5fc9d41740e0d1df477b09e649c.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\1371d5fc9d41740e0d1df477b09e649c.exe"	1371d5fc9d41740e0d1df477b09e649c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 640 set thread context of 468	640	chargeable.exe	87

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe
Token: 33	468	chargeable.exe
Token: SeIncBasePriorityPrivilege	468	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 3896 wrote to memory of 640	3896	1371d5fc9d41740e0d1df477b09e649c.exe	86
PID 3896 wrote to memory of 640	3896	1371d5fc9d41740e0d1df477b09e649c.exe	86
PID 3896 wrote to memory of 640	3896	1371d5fc9d41740e0d1df477b09e649c.exe	86
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 640 wrote to memory of 468	640	chargeable.exe	87
PID 468 wrote to memory of 4688	468	chargeable.exe	88
PID 468 wrote to memory of 4688	468	chargeable.exe	88
PID 468 wrote to memory of 4688	468	chargeable.exe	88

C:\Users\Admin\AppData\Local\Temp\1371d5fc9d41740e0d1df477b09e649c.exe
"C:\Users\Admin\AppData\Local\Temp\1371d5fc9d41740e0d1df477b09e649c.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:3896
- 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:640
- - 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:468
  - - 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:4688

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 116KB
SHA256 4612fadc347c50928dc2cb1909bd44f019cd491e0ab8f3a514bbe25fb222eaf2
MD5 374c54e5ceea49482e56fa8e476f43d4
SHA1 24b018fa91b0d485d8ae1e74a97ce8fc7c92f01d
SHA512 79c60e78f076e2b1c5585c3ac3ecac1369600def23d896fbf522fb6739a4bda39693b5cc8a3471050dc2bd40b00583b0a06b234816301140bd9f55524f5e6cea
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDLZ/d:P5eznsjsguGDFqGZ2rDLZ/d
MD5 SHA1 SHA512 SSDEEP

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memory/468-19-0x0000000000400000-0x000000000040C000-memory.dmp

Download

memory/468-25-0x00000000753E0000-0x0000000075991000-memory.dmp

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memory/468-24-0x00000000753E0000-0x0000000075991000-memory.dmp

Download

memory/468-26-0x00000000753E0000-0x0000000075991000-memory.dmp

Download

memory/640-17-0x00000000753E0000-0x0000000075991000-memory.dmp

Download

memory/640-23-0x00000000753E0000-0x0000000075991000-memory.dmp

Download

memory/3896-0-0x00000000753E2000-0x00000000753E3000-memory.dmp

Download

memory/3896-1-0x00000000753E0000-0x0000000075991000-memory.dmp

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memory/3896-2-0x00000000753E0000-0x0000000075991000-memory.dmp

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memory/3896-18-0x00000000753E0000-0x0000000075991000-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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