njrat | b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49

General

Target
b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe
Size 98KB
Sample201109-272esrfva6
SHA256 b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49
MD5 ab05d0421c5ef0faa9284fb0a119c601
SHA1 dadd912e1d5e853d9f6a48ce4ea57c996a256f57
SHA512 f1389ae63d06815f702efa46e453dbf290d914852de5fd92ada95b7c1ec10b16d18d88920623c9075bcdf6fb21cb3bdfd27fe013c4701f1452f7991193daffd5
MD5 SHA1 SHA512

Score

10^/10

njrat neuf evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

neuf

C2

doddyfire.linkpc.net:10000

Mutex

e1a87040f2026369a233f9ae76301b7b

Attributes

reg_key
e1a87040f2026369a233f9ae76301b7b
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat

Executes dropped EXE 2 IoCs

pid	Process
240	chargeable.exe
1184	chargeable.exe

Modifies Windows Firewall 1 TTPs
evasion

Modify Existing Service
T1031

Loads dropped DLL 2 IoCs

pid	Process
1980	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe
1980	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\confuse = "C:\\Users\\Admin\\AppData\\Roaming\\confuse\\chargeable.exe"	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\SysMain = "C:\\Users\\Admin\\AppData\\Local\\Temp\\b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe"	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 240 set thread context of 1184	240	chargeable.exe	30

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 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe
Token: 33	1184	chargeable.exe
Token: SeIncBasePriorityPrivilege	1184	chargeable.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1980 wrote to memory of 240	1980	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe	29
PID 1980 wrote to memory of 240	1980	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe	29
PID 1980 wrote to memory of 240	1980	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe	29
PID 1980 wrote to memory of 240	1980	b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe	29
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 240 wrote to memory of 1184	240	chargeable.exe	30
PID 1184 wrote to memory of 1856	1184	chargeable.exe	31
PID 1184 wrote to memory of 1856	1184	chargeable.exe	31
PID 1184 wrote to memory of 1856	1184	chargeable.exe	31
PID 1184 wrote to memory of 1856	1184	chargeable.exe	31

C:\Users\Admin\AppData\Local\Temp\b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe
"C:\Users\Admin\AppData\Local\Temp\b4cd64cd6ea7c31f5e568d6da93d6cfbc7c97d8d7829f27bf6702f2dc11ebf49.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1980
- 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:240
- - 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:1184
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\confuse\chargeable.exe" "chargeable.exe" ENABLE
      4⤵
      PID:1856

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

memory/1184-5-0x0000000000400000-0x000000000040C000-memory.dmp

Download

memory/1184-8-0x0000000000400000-0x000000000040C000-memory.dmp

Download

memory/1184-9-0x0000000000400000-0x000000000040C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads