njrat | 1b8213f36e6aca9379292c1e2d77c46351703b89936d1e892c95a9496f83cb61

General

Target

JaffaCakes118_66f357009761da16ba97118cf921f030.exe
Size

97KB
MD5

66f357009761da16ba97118cf921f030
SHA1

7fa0857714cbfc108bf92ba81ea55a04f3adbafb
SHA256

1b8213f36e6aca9379292c1e2d77c46351703b89936d1e892c95a9496f83cb61
SHA512

9b77ef66e4dafec78a7bc5014aeff22e460a3ea7ec23ca1395a8e4cb741975005ab525f0e72db65ba58a9ca5bcd54b23f09c8b110082211094189e3555525a4c
SSDEEP

1536:BbL7oRv1uhlfShVjSEYTdp0u3p0WIkyZDKeO2XXZuF23CLyOHKr0hnv:9EyhMPYTdpFZnIk4DKeO2VbOHo0Bv

Score

10^/10

njrat <<l~0~0~k >>evasion persistence privilege_escalation trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

<<L~0~0~K >>

C2

microsoft-help.myvnc.com:211

Mutex

7484964710ffec0dd0c0abcd35c14b2c

Attributes

reg_key
7484964710ffec0dd0c0abcd35c14b2c
splitter
|'|'|

Signatures

Njrat family
njrat
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
4936	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_66f357009761da16ba97118cf921f030.exe

Executes dropped EXE 1 IoCs

pid	Process
3056	dllhost.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7484964710ffec0dd0c0abcd35c14b2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\7484964710ffec0dd0c0abcd35c14b2c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe

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

Suspicious use of AdjustPrivilegeToken 19 IoCs

description	pid	Process
Token: SeDebugPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe
Token: 33	3056	dllhost.exe
Token: SeIncBasePriorityPrivilege	3056	dllhost.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3888 wrote to memory of 3056	3888	JaffaCakes118_66f357009761da16ba97118cf921f030.exe	100
PID 3888 wrote to memory of 3056	3888	JaffaCakes118_66f357009761da16ba97118cf921f030.exe	100
PID 3056 wrote to memory of 4936	3056	dllhost.exe	102
PID 3056 wrote to memory of 4936	3056	dllhost.exe	102

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f357009761da16ba97118cf921f030.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_66f357009761da16ba97118cf921f030.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3888
- C:\Users\Admin\AppData\Local\Temp\dllhost.exe
  "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3056
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\dllhost.exe" "dllhost.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    PID:4936

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\dllhost.exe

Filesize
97KB

MD5
66f357009761da16ba97118cf921f030

SHA1
7fa0857714cbfc108bf92ba81ea55a04f3adbafb

SHA256
1b8213f36e6aca9379292c1e2d77c46351703b89936d1e892c95a9496f83cb61

SHA512
9b77ef66e4dafec78a7bc5014aeff22e460a3ea7ec23ca1395a8e4cb741975005ab525f0e72db65ba58a9ca5bcd54b23f09c8b110082211094189e3555525a4c

Download Submit
memory/3056-25-0x0000000001190000-0x0000000001198000-memory.dmp

Filesize
32KB

Download
memory/3056-24-0x000000001C560000-0x000000001C5FC000-memory.dmp

Filesize
624KB

Download
memory/3056-23-0x00007FFE64770000-0x00007FFE65111000-memory.dmp

Filesize
9.6MB

Download
memory/3056-22-0x00007FFE64770000-0x00007FFE65111000-memory.dmp

Filesize
9.6MB

Download
memory/3056-21-0x00007FFE64770000-0x00007FFE65111000-memory.dmp

Filesize
9.6MB

Download
memory/3888-6-0x000000001BAB0000-0x000000001BB56000-memory.dmp

Filesize
664KB

Download
memory/3888-7-0x000000001C0B0000-0x000000001C57E000-memory.dmp

Filesize
4.8MB

Download
memory/3888-0-0x00007FFE64A25000-0x00007FFE64A26000-memory.dmp

Filesize
4KB

Download
memory/3888-20-0x00007FFE64770000-0x00007FFE65111000-memory.dmp

Filesize
9.6MB

Download
memory/3888-5-0x0000000000FD0000-0x0000000000FDC000-memory.dmp

Filesize
48KB

Download
memory/3888-4-0x00007FFE64770000-0x00007FFE65111000-memory.dmp

Filesize
9.6MB

Download
memory/3888-3-0x00007FFE64A25000-0x00007FFE64A26000-memory.dmp

Filesize
4KB

Download
memory/3888-2-0x00007FFE64770000-0x00007FFE65111000-memory.dmp

Filesize
9.6MB

Download
memory/3888-1-0x00007FFE64770000-0x00007FFE65111000-memory.dmp

Filesize
9.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads