njrat | c68153ced490f150aaa321f8e017f5c04525bfc729f68d8400fba21d0dfb1387

General

Target

C68153CED490F150AAA321F8E017F5C04525BFC729F68.exe
Size

23KB
MD5

6f583b03795a6bb7f086446ee6b11b62
SHA1

5c7df1e74ee956641304e93ccd6766dd81277c07
SHA256

c68153ced490f150aaa321f8e017f5c04525bfc729f68d8400fba21d0dfb1387
SHA512

903a04fe11097e5f9bf3c81d37e16bdce0b5febf56b36704f26f827ad1ffd49975096078711fa433931bacf2a5f7fed13ddeab66c716953a1a139eee03723786

Score

10^/10

njrat xbutton evasion persistence suricata trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

xButtoN

C2

crlnegolamx.ddns.net:89

Mutex

3b51fad99c0c53b7f1590d6f74c8fccb

Attributes

reg_key
3b51fad99c0c53b7f1590d6f74c8fccb
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
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Capture)
suricata
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Remote Desktop)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback (Remote Desktop)
suricata
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Get Passwords)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Get Passwords)
suricata
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)
suricata: ET MALWARE njrat ver 0.7d Malware CnC Callback Response (Remote Desktop)
suricata
Executes dropped EXE 1 IoCs

Processes:

tasksys.exe

pid process

3976 tasksys.exe
Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

pid	process
3976	tasksys.exe

Drops startup file 2 IoCs

Processes:

tasksys.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3b51fad99c0c53b7f1590d6f74c8fccb.exe	tasksys.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\3b51fad99c0c53b7f1590d6f74c8fccb.exe	tasksys.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

tasksys.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1042495040-510797905-2613508344-1000\Software\Microsoft\Windows\CurrentVersion\Run\3b51fad99c0c53b7f1590d6f74c8fccb = "\"C:\\Users\\Admin\\AppData\\Roaming\\tasksys.exe\" .."	tasksys.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\3b51fad99c0c53b7f1590d6f74c8fccb = "\"C:\\Users\\Admin\\AppData\\Roaming\\tasksys.exe\" .."	tasksys.exe

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 33 IoCs

Processes:

tasksys.exe

description	pid	process
Token: SeDebugPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe
Token: 33	3976	tasksys.exe
Token: SeIncBasePriorityPrivilege	3976	tasksys.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

C68153CED490F150AAA321F8E017F5C04525BFC729F68.exetasksys.exe

description	pid	process	target process
PID 3064 wrote to memory of 3976	3064	C68153CED490F150AAA321F8E017F5C04525BFC729F68.exe	tasksys.exe
PID 3064 wrote to memory of 3976	3064	C68153CED490F150AAA321F8E017F5C04525BFC729F68.exe	tasksys.exe
PID 3064 wrote to memory of 3976	3064	C68153CED490F150AAA321F8E017F5C04525BFC729F68.exe	tasksys.exe
PID 3976 wrote to memory of 3524	3976	tasksys.exe	netsh.exe
PID 3976 wrote to memory of 3524	3976	tasksys.exe	netsh.exe
PID 3976 wrote to memory of 3524	3976	tasksys.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\C68153CED490F150AAA321F8E017F5C04525BFC729F68.exe
"C:\Users\Admin\AppData\Local\Temp\C68153CED490F150AAA321F8E017F5C04525BFC729F68.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3064
- C:\Users\Admin\AppData\Roaming\tasksys.exe
  "C:\Users\Admin\AppData\Roaming\tasksys.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3976
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\tasksys.exe" "tasksys.exe" ENABLE
    3⤵
    PID:3524

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

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

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Downloads

C:\Users\Admin\AppData\Roaming\tasksys.exe

MD5
6f583b03795a6bb7f086446ee6b11b62

SHA1
5c7df1e74ee956641304e93ccd6766dd81277c07

SHA256
c68153ced490f150aaa321f8e017f5c04525bfc729f68d8400fba21d0dfb1387

SHA512
903a04fe11097e5f9bf3c81d37e16bdce0b5febf56b36704f26f827ad1ffd49975096078711fa433931bacf2a5f7fed13ddeab66c716953a1a139eee03723786

Download Submit
C:\Users\Admin\AppData\Roaming\tasksys.exe

MD5
6f583b03795a6bb7f086446ee6b11b62

SHA1
5c7df1e74ee956641304e93ccd6766dd81277c07

SHA256
c68153ced490f150aaa321f8e017f5c04525bfc729f68d8400fba21d0dfb1387

SHA512
903a04fe11097e5f9bf3c81d37e16bdce0b5febf56b36704f26f827ad1ffd49975096078711fa433931bacf2a5f7fed13ddeab66c716953a1a139eee03723786

Download Submit
memory/3064-118-0x0000000001060000-0x00000000011AA000-memory.dmp

Filesize
1.3MB

Download
memory/3524-123-0x0000000000000000-mapping.dmp

Download
memory/3976-119-0x0000000000000000-mapping.dmp

Download
memory/3976-122-0x0000000000EB0000-0x0000000000EB1000-memory.dmp

Filesize
4KB

Download
memory/3976-124-0x0000000000EB1000-0x0000000000EB2000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads