njrat | 3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87c

General

Target

3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe
Size

23KB
MD5

a1d501174bd8a3f273c0070a3197fb40
SHA1

7aa9b572d8ec818334daf8f2e42191d2413b9965
SHA256

3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87c
SHA512

1a588bc1640479b24a38e7c44586290d9b69f91e4f882b2fc73db0fe8b2bec30df4f3a57bfb17cac6edf0627138f1dd90495c90dabab702032ea523c2c1fdf7f
SSDEEP

384:+wTSiYWD2Z7w3CsJeiecwJ3fw6FgzeAh33RtmRvR6JZlbw8hqIusZzZw35y:1vZiBK1edJRpcnuVg

Score

10^/10

njrat discovery evasion persistence privilege_escalation trojan

Malware Config

Signatures

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
3428	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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe

Executes dropped EXE 1 IoCs

pid	Process
3832	server.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-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\a6fcc754ccac3851245ca8d1891d5ad2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\a6fcc754ccac3851245ca8d1891d5ad2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.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\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of AdjustPrivilegeToken 27 IoCs

description	pid	Process
Token: SeDebugPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe
Token: 33	3832	server.exe
Token: SeIncBasePriorityPrivilege	3832	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4020 wrote to memory of 3832	4020	3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe	94
PID 4020 wrote to memory of 3832	4020	3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe	94
PID 4020 wrote to memory of 3832	4020	3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe	94
PID 3832 wrote to memory of 3428	3832	server.exe	98
PID 3832 wrote to memory of 3428	3832	server.exe	98
PID 3832 wrote to memory of 3428	3832	server.exe	98

C:\Users\Admin\AppData\Local\Temp\3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe
"C:\Users\Admin\AppData\Local\Temp\3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87cN.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4020
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3832
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    - Event Triggered Execution: Netsh Helper DLL
    - System Location Discovery: System Language Discovery
    PID:3428

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4132,i,16316361669272684588,6171287487746154806,262144 --variations-seed-version --mojo-platform-channel-handle=4080 /prefetch:8
1⤵
PID:2224

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

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\server.exe

Filesize
23KB

MD5
a1d501174bd8a3f273c0070a3197fb40

SHA1
7aa9b572d8ec818334daf8f2e42191d2413b9965

SHA256
3978d80f61dc860809a877ae2e17a21ec4dfdf02f81953fa1b14eda65055d87c

SHA512
1a588bc1640479b24a38e7c44586290d9b69f91e4f882b2fc73db0fe8b2bec30df4f3a57bfb17cac6edf0627138f1dd90495c90dabab702032ea523c2c1fdf7f

Download Submit
memory/3832-13-0x00000000746A0000-0x0000000074C51000-memory.dmp

Filesize
5.7MB

Download
memory/3832-14-0x00000000746A0000-0x0000000074C51000-memory.dmp

Filesize
5.7MB

Download
memory/3832-15-0x00000000746A0000-0x0000000074C51000-memory.dmp

Filesize
5.7MB

Download
memory/3832-16-0x00000000746A0000-0x0000000074C51000-memory.dmp

Filesize
5.7MB

Download
memory/4020-0-0x00000000746A2000-0x00000000746A3000-memory.dmp

Filesize
4KB

Download
memory/4020-1-0x00000000746A0000-0x0000000074C51000-memory.dmp

Filesize
5.7MB

Download
memory/4020-2-0x00000000746A0000-0x0000000074C51000-memory.dmp

Filesize
5.7MB

Download
memory/4020-12-0x00000000746A0000-0x0000000074C51000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads