njrat | c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543

Analysis

max time kernel
149s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
31/05/2024, 02:44

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General

Target
c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe
Size 115KB
Sample240531-c8mpdacd7t
SHA256 c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543
MD5 fe5ab4ef367f855a02233953007b90a7
SHA1 bb1656ab2b264c1bec67842536f690fc59a82a22
SHA512 23c00a6261c545a561e2697b50db01a4f7e1ca60a03607792a14d8be68c19f73a61c0eb9981659d338319b341a0777cc0101836cab252af9f0ad15a2dc758079
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDIf:P5eznsjsguGDFqGZ2rDIf
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
1192	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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe

Executes dropped EXE 2 IoCs

pid	Process
4640	chargeable.exe
1944	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-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe"	c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4640 set thread context of 1944	4640	chargeable.exe	97

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	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe
Token: 33	1944	chargeable.exe
Token: SeIncBasePriorityPrivilege	1944	chargeable.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4820 wrote to memory of 4640	4820	c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe	94
PID 4820 wrote to memory of 4640	4820	c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe	94
PID 4820 wrote to memory of 4640	4820	c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe	94
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 4640 wrote to memory of 1944	4640	chargeable.exe	97
PID 1944 wrote to memory of 1192	1944	chargeable.exe	98
PID 1944 wrote to memory of 1192	1944	chargeable.exe	98
PID 1944 wrote to memory of 1192	1944	chargeable.exe	98

C:\Users\Admin\AppData\Local\Temp\c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe
"C:\Users\Admin\AppData\Local\Temp\c6645f04212cb6a6656c7f2d221b5d17813618e68688b81f3b5717c35fea8543.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:4820
- 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:4640
- - 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:1944
  - - 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:1192

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 115KB
SHA256 3a2e391dfb7a409e8bbca4e57b78b3cb19394ff499d18456e37158fd77e1fd07
MD5 e368b20fa1ab25ba81a28362ed21f48e
SHA1 c9306bfc93dd0d671761a248bda69b59dd31e641
SHA512 b8f0b801354df8cf8ae98dfdefb61cf62bff3c06baeb6eea0ed65c30a0964e4fdd37ab6c7d35ad938e5235a58add47cb2c0776f3f315ead403c72f2577d974ea
SSDEEP 1536:WWp5eznKUlIOp3YjVCguHEvQEbFqVC3woFRKpT4XEQhuxzuMDIP:P5eznsjsguGDFqGZ2rDIP
MD5 SHA1 SHA512 SSDEEP

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memory/1944-21-0x0000000000400000-0x000000000040C000-memory.dmp

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memory/1944-25-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/1944-27-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/1944-28-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/4640-18-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/4640-19-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/4640-20-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/4640-26-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/4820-2-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/4820-0-0x0000000075202000-0x0000000075203000-memory.dmp

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memory/4820-17-0x0000000075200000-0x00000000757B1000-memory.dmp

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memory/4820-1-0x0000000075200000-0x00000000757B1000-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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