njrat | df83cef315dc016412a03ce95770d9bc418b9780878c8116d91f0bd9cdcb7c0f

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
24/06/2024, 00:56

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General

Target
029b78442cb97e5de8132363ff8052eb.exe
Size 114KB
Sample240624-back3s1gkf
SHA256 df83cef315dc016412a03ce95770d9bc418b9780878c8116d91f0bd9cdcb7c0f
MD5 029b78442cb97e5de8132363ff8052eb
SHA1 7cde49ae6cbc2a98963a42a2580d356c495d0077
SHA512 7c3519724af7767ffd4c9694e92775aef99162650161ed3a3e7f301efdd2c4b5ed5eb345d117adb5a9f6440708b4f26e762010f56c3289c38fac9711ae3bd1e6
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMdeGm:P5eznsjsguGDFqGZ2rC
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat neuf 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
4972	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	029b78442cb97e5de8132363ff8052eb.exe

Executes dropped EXE 3 IoCs

pid	Process
888	chargeable.exe
1752	chargeable.exe
4796	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"	029b78442cb97e5de8132363ff8052eb.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\\029b78442cb97e5de8132363ff8052eb.exe"	029b78442cb97e5de8132363ff8052eb.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 888 set thread context of 1752	888	chargeable.exe	83
PID 888 set thread context of 4796	888	chargeable.exe	82

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

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4320	4796	WerFault.exe	82

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe
Token: 33	1752	chargeable.exe
Token: SeIncBasePriorityPrivilege	1752	chargeable.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 4360 wrote to memory of 888	4360	029b78442cb97e5de8132363ff8052eb.exe	81
PID 4360 wrote to memory of 888	4360	029b78442cb97e5de8132363ff8052eb.exe	81
PID 4360 wrote to memory of 888	4360	029b78442cb97e5de8132363ff8052eb.exe	81
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 1752	888	chargeable.exe	83
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 888 wrote to memory of 4796	888	chargeable.exe	82
PID 1752 wrote to memory of 4972	1752	chargeable.exe	87
PID 1752 wrote to memory of 4972	1752	chargeable.exe	87
PID 1752 wrote to memory of 4972	1752	chargeable.exe	87

C:\Users\Admin\AppData\Local\Temp\029b78442cb97e5de8132363ff8052eb.exe
"C:\Users\Admin\AppData\Local\Temp\029b78442cb97e5de8132363ff8052eb.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4360
- 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:888
- - C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe
    3⤵
    - Executes dropped EXE
    PID:4796
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 4796 -s 80
      4⤵
      Program crash
      PID:4320
- - 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:1752
  - - 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
      PID:4972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4796 -ip 4796
1⤵
PID:1484

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

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 114KB
SHA256 de5b37da57f25261aad2944236d38480e44e7f73c7ee6ad9625f232db1713114
MD5 c92f2c46d2e9534d57cb5ecf8e4c4d88
SHA1 b6985ea66aa877d62d1a70f942a99eda8c081a19
SHA512 fdd756d2ee0ce01c35c1bb1cf8cfd00cd706863109454203a4a97844278946ff5873a58603c43cb067a8338b934c1b4d5d362c7f5a403072fa56631c7d5346fa
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMdeGl:P5eznsjsguGDFqGZ2rp
MD5 SHA1 SHA512 SSDEEP

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memory/888-17-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/888-18-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/888-27-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/1752-19-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/1752-25-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/1752-26-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/1752-28-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/4360-0-0x0000000074CB2000-0x0000000074CB3000-memory.dmp

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memory/4360-1-0x0000000074CB0000-0x0000000075261000-memory.dmp

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memory/4360-16-0x0000000074CB0000-0x0000000075261000-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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