njrat | ec373f0f290e687626e8bef4bef704c57746c3b40bb5057388ed5cef91db1f5f

Analysis

max time kernel
115s
max time network
119s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
25/07/2024, 08:41

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General

Target
a998b2178f332db59118f74884685fe0N.exe
Size 111KB
Sample240725-klghva1gpc
SHA256 ec373f0f290e687626e8bef4bef704c57746c3b40bb5057388ed5cef91db1f5f
MD5 a998b2178f332db59118f74884685fe0
SHA1 edf02e62ed5b0ecb01b5d9cbe3315047b7b144c3
SHA512 bb4c006232b22c03d99340d6e9225af29fba910d619430c24462bd8b7636bf8bca2bed760a078caae9775066ee2a46f49ba6a2e296cd1881c2f5d0565a15eda2
SSDEEP 1536:orp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4xtKegoxmOBh73TO:w5eznsjsguGDFqGx8egoxmO3rTO
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf discovery evasion persistence privilege_escalation 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
1444	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-1-5-21-1750093773-264148664-1320403265-1000\Control Panel\International\Geo\Nation	a998b2178f332db59118f74884685fe0N.exe

Executes dropped EXE 2 IoCs

pid	Process
2868	chargeable.exe
3228	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-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	a998b2178f332db59118f74884685fe0N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1750093773-264148664-1320403265-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\a998b2178f332db59118f74884685fe0N.exe"	a998b2178f332db59118f74884685fe0N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2868 set thread context of 3228	2868	chargeable.exe	96

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

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 4 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a998b2178f332db59118f74884685fe0N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chargeable.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	chargeable.exe

Suspicious use of AdjustPrivilegeToken 25 IoCs

description	pid	Process
Token: SeDebugPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe
Token: 33	3228	chargeable.exe
Token: SeIncBasePriorityPrivilege	3228	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 5080 wrote to memory of 2868	5080	a998b2178f332db59118f74884685fe0N.exe	93
PID 5080 wrote to memory of 2868	5080	a998b2178f332db59118f74884685fe0N.exe	93
PID 5080 wrote to memory of 2868	5080	a998b2178f332db59118f74884685fe0N.exe	93
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 2868 wrote to memory of 3228	2868	chargeable.exe	96
PID 3228 wrote to memory of 1444	3228	chargeable.exe	97
PID 3228 wrote to memory of 1444	3228	chargeable.exe	97
PID 3228 wrote to memory of 1444	3228	chargeable.exe	97

C:\Users\Admin\AppData\Local\Temp\a998b2178f332db59118f74884685fe0N.exe
"C:\Users\Admin\AppData\Local\Temp\a998b2178f332db59118f74884685fe0N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5080
- C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
  "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2868
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3228
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      Event Triggered Execution: Netsh Helper DLL
      System Location Discovery: System Language Discovery
      PID:1444

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

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

System Location Discovery

T1614

System Language Discovery

T1614.001

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 111KB
SHA256 e77216637cfb3e7ecdde2929a743889b5957c9f936b5872488d06efe2c9cfe53
MD5 ad885b88ffbe98d1d45b8ed2fc2ee854
SHA1 b6bad693f5c26606361254015fe1452aabf763c2
SHA512 04709d136209e45b83eef21ba431b5aadb41ce840866d8bd943dc8b2e56edeed5efff46b31062a41955966bf565a671b7f01c33fa19136c56f999a21fddefd6d
SSDEEP 1536:orp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4xtKegoxmOBh73Tu:w5eznsjsguGDFqGx8egoxmO3rTu
MD5 SHA1 SHA512 SSDEEP

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memory/2868-17-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/2868-19-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/2868-24-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/3228-20-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/3228-25-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/3228-26-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/5080-0-0x0000000074912000-0x0000000074913000-memory.dmp

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memory/5080-1-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/5080-2-0x0000000074910000-0x0000000074EC1000-memory.dmp

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memory/5080-18-0x0000000074910000-0x0000000074EC1000-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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