njrat | b1c0e35f47273a236518f43ee56c0367d8b423ca9ed8f9e7ad4a875caa47bb69

General

Target

753C707E47BCE65D32BE781EA1584E0B.exe
Size

84KB
MD5

753c707e47bce65d32be781ea1584e0b
SHA1

7b43f6a910b01553dfae51560570365e3ce9ed42
SHA256

b1c0e35f47273a236518f43ee56c0367d8b423ca9ed8f9e7ad4a875caa47bb69
SHA512

8afc2ebbc80e17e42317202e9479e0c223456cf9f0b22ccdf9fe486eff19ebf9a33a2e00c01aa81168d4ad9950c34c8d78dc2f5821702fe61874221088d3cdda

Score

10^/10

njrat nyan cat persistence suricata trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

NYAN CAT

C2

narotomagic.publicvm.com:6663

Mutex

a728eeadc9774101a351e2a5b3fe9598

Attributes

reg_key
a728eeadc9774101a351e2a5b3fe9598
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata: ET MALWARE Generic njRAT/Bladabindi CnC Activity (ll)
suricata

Executes dropped EXE 2 IoCs

pid	Process
4116	primt.exe
2452	primt.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3686645723-710336880-414668232-1000\Software\Microsoft\Windows\CurrentVersion\Run\primt.exe = "\"C:\\Users\\Admin\\AppData\\Roaming\\primt.exe\""	753C707E47BCE65D32BE781EA1584E0B.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4444 set thread context of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4116 set thread context of 2452	4116	primt.exe	81

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	4444	753C707E47BCE65D32BE781EA1584E0B.exe
Token: SeDebugPrivilege	4116	primt.exe
Token: SeDebugPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe
Token: 33	2452	primt.exe
Token: SeIncBasePriorityPrivilege	2452	primt.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4444 wrote to memory of 4916	4444	753C707E47BCE65D32BE781EA1584E0B.exe	75
PID 4916 wrote to memory of 4116	4916	753C707E47BCE65D32BE781EA1584E0B.exe	80
PID 4916 wrote to memory of 4116	4916	753C707E47BCE65D32BE781EA1584E0B.exe	80
PID 4916 wrote to memory of 4116	4916	753C707E47BCE65D32BE781EA1584E0B.exe	80
PID 4116 wrote to memory of 2452	4116	primt.exe	81
PID 4116 wrote to memory of 2452	4116	primt.exe	81
PID 4116 wrote to memory of 2452	4116	primt.exe	81
PID 4116 wrote to memory of 2452	4116	primt.exe	81
PID 4116 wrote to memory of 2452	4116	primt.exe	81
PID 4116 wrote to memory of 2452	4116	primt.exe	81
PID 4116 wrote to memory of 2452	4116	primt.exe	81
PID 4116 wrote to memory of 2452	4116	primt.exe	81

C:\Users\Admin\AppData\Local\Temp\753C707E47BCE65D32BE781EA1584E0B.exe
"C:\Users\Admin\AppData\Local\Temp\753C707E47BCE65D32BE781EA1584E0B.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4444
- C:\Users\Admin\AppData\Local\Temp\753C707E47BCE65D32BE781EA1584E0B.exe
  C:\Users\Admin\AppData\Local\Temp\753C707E47BCE65D32BE781EA1584E0B.exe
  2⤵
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:4916
- - C:\Users\Admin\AppData\Roaming\primt.exe
    "C:\Users\Admin\AppData\Roaming\primt.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4116
  - - C:\Users\Admin\AppData\Roaming\primt.exe
      C:\Users\Admin\AppData\Roaming\primt.exe
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:2452

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2452-127-0x0000000000D90000-0x0000000000D91000-memory.dmp

Filesize
4KB

Download
memory/4116-126-0x0000000002F60000-0x0000000002F61000-memory.dmp

Filesize
4KB

Download
memory/4444-116-0x0000000002F20000-0x0000000002F21000-memory.dmp

Filesize
4KB

Download
memory/4916-117-0x0000000002EF0000-0x0000000002EF1000-memory.dmp

Filesize
4KB

Download
memory/4916-114-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download

Analysis

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