njrat | b8e4e2776a0d1ddef193326e960d1a0e11d6489610595faa13f57c33103b95a7

General

Target

1243.exe
Size

292KB
MD5

0537a39ec65bcbd5a1b1501ec57cf2b4
SHA1

7e8dfbfafcc6795ecb1dffb2ae3267f325a77375
SHA256

b8e4e2776a0d1ddef193326e960d1a0e11d6489610595faa13f57c33103b95a7
SHA512

43dbaaf81e602bfb8b02763b4936157440ed9d301f789903199b21bbcd0da7cf94398e17cc579b887780452284c70a3e1bf8567d65dae5626c655c0c460f0b63
SSDEEP

6144:hrYOdblgpFGv4oO6dcwnOZ4YXo0x9PEfxwQCRW:h5OFGwvKc+leh+RD

Score

10^/10

njrat discovery persistence trojan

Malware Config

Signatures

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

Checks computer location settings 2 TTPs 2 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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	1243.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e564aa028dc627deeaa119b78ed54d5e.exe	dllhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\e564aa028dc627deeaa119b78ed54d5e.exe	dllhost.exe

Executes dropped EXE 2 IoCs

pid	Process
4936	.exe
4844	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\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\e564aa028dc627deeaa119b78ed54d5e = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\e564aa028dc627deeaa119b78ed54d5e = "\"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

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dllhost.exe

Suspicious use of AdjustPrivilegeToken 34 IoCs

description	pid	Process
Token: SeDebugPrivilege	2296	1243.exe
Token: SeDebugPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe
Token: 33	4844	dllhost.exe
Token: SeIncBasePriorityPrivilege	4844	dllhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2296 wrote to memory of 4936	2296	1243.exe	82
PID 2296 wrote to memory of 4936	2296	1243.exe	82
PID 2296 wrote to memory of 4936	2296	1243.exe	82
PID 4936 wrote to memory of 4844	4936	.exe	85
PID 4936 wrote to memory of 4844	4936	.exe	85
PID 4936 wrote to memory of 4844	4936	.exe	85

C:\Users\Admin\AppData\Local\Temp\1243.exe
"C:\Users\Admin\AppData\Local\Temp\1243.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Users\Admin\AppData\Local\Temp\.exe
  "C:\Users\Admin\AppData\Local\Temp\.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4936
- - C:\Users\Admin\AppData\Local\Temp\dllhost.exe
    "C:\Users\Admin\AppData\Local\Temp\dllhost.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4844

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

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
55KB

MD5
1e7aaef84737eebc8cd0790b566ab183

SHA1
28764f5734e6c7ccdc78cda14ca3640996614321

SHA256
e3e938e237effdd7a5481dc2b288e4030f82ffbab6d3bf7678bac2acc7792739

SHA512
13271fdb88d7ce7f628b89ba475cd558161906ea15f2572d6d204b0094e7fc0dd5d6431f47a25a7a89f9d3148217833417b97e87201a10dbcaa53c796f730332

Download Submit
memory/2296-3-0x00007FFD0B020000-0x00007FFD0B9C1000-memory.dmp

Filesize
9.6MB

Download
memory/2296-2-0x00007FFD0B020000-0x00007FFD0B9C1000-memory.dmp

Filesize
9.6MB

Download
memory/2296-20-0x00007FFD0B2D5000-0x00007FFD0B2D6000-memory.dmp

Filesize
4KB

Download
memory/2296-4-0x00007FFD0B020000-0x00007FFD0B9C1000-memory.dmp

Filesize
9.6MB

Download
memory/2296-5-0x000000001BED0000-0x000000001BF76000-memory.dmp

Filesize
664KB

Download
memory/2296-6-0x00007FFD0B020000-0x00007FFD0B9C1000-memory.dmp

Filesize
9.6MB

Download
memory/2296-7-0x000000001D8B0000-0x000000001DD7E000-memory.dmp

Filesize
4.8MB

Download
memory/2296-8-0x000000001BF80000-0x000000001C01C000-memory.dmp

Filesize
624KB

Download
memory/2296-1-0x00007FFD0B020000-0x00007FFD0B9C1000-memory.dmp

Filesize
9.6MB

Download
memory/2296-35-0x00007FFD0B020000-0x00007FFD0B9C1000-memory.dmp

Filesize
9.6MB

Download
memory/2296-0-0x00007FFD0B2D5000-0x00007FFD0B2D6000-memory.dmp

Filesize
4KB

Download
memory/2296-21-0x00007FFD0B020000-0x00007FFD0B9C1000-memory.dmp

Filesize
9.6MB

Download
memory/4844-31-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-32-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-37-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-39-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4844-38-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4936-19-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4936-18-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4936-33-0x0000000074D20000-0x00000000752D1000-memory.dmp

Filesize
5.7MB

Download
memory/4936-17-0x0000000074D22000-0x0000000074D23000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads