njrat | c0ee79dfade9330fa524500595c9a3489be87d8017e18a1a3997991de761603a

General

Target

teamviwer9988.exe
Size

259KB
MD5

46f5111c7c871155091f0a7810b02235
SHA1

1a6e436333ba021e6971afd72c1ab880e3732308
SHA256

c0ee79dfade9330fa524500595c9a3489be87d8017e18a1a3997991de761603a
SHA512

538523ca4a06f824d3b8168107516e9bafefd54c21ec328c538be9323e1da2accb01f6fb8b6dfae5013e9f382f0159ed8c41ee491514adf5702aecf2ece5d870
SSDEEP

6144:RdAECP0FqT2A+3vLlpQkIxZ9o6SCiYYYYYYYYYYYRYYYYYYYYYYiPhDc:R3CPsmNGvLov/66AYYYYYYYYYYYRYYYU

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

amazon.thedreamsop.com:2211

Mutex

Microsoft® Windows® Operating System

Attributes

reg_key
Microsoft® Windows® Operating System
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1736	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-1-5-21-2805025096-2326403612-4231045514-1000\Control Panel\International\Geo\Nation	teamviwer9988.exe

Executes dropped EXE 1 IoCs

pid	Process
1964	explorer.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-1-5-21-2805025096-2326403612-4231045514-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft® Windows® Operating System = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\explorer.exe\" .."	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft® Windows® Operating System = "\"C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\Windows\\explorer.exe\" .."	explorer.exe

Drops desktop.ini file(s) 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly\Desktop.ini	teamviwer9988.exe
File created	C:\Windows\assembly\Desktop.ini	teamviwer9988.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\assembly	teamviwer9988.exe
File created	C:\Windows\assembly\Desktop.ini	teamviwer9988.exe
File opened for modification	C:\Windows\assembly\Desktop.ini	teamviwer9988.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe
Token: 33	1964	explorer.exe
Token: SeIncBasePriorityPrivilege	1964	explorer.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4536 wrote to memory of 1964	4536	teamviwer9988.exe	86
PID 4536 wrote to memory of 1964	4536	teamviwer9988.exe	86
PID 1964 wrote to memory of 1736	1964	explorer.exe	90
PID 1964 wrote to memory of 1736	1964	explorer.exe	90

C:\Users\Admin\AppData\Local\Temp\teamviwer9988.exe
"C:\Users\Admin\AppData\Local\Temp\teamviwer9988.exe"
1⤵
- Checks computer location settings
- Drops desktop.ini file(s)
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:4536
- C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe
  "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Windows\SYSTEM32\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe" "explorer.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1736

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe

Filesize
259KB

MD5
46f5111c7c871155091f0a7810b02235

SHA1
1a6e436333ba021e6971afd72c1ab880e3732308

SHA256
c0ee79dfade9330fa524500595c9a3489be87d8017e18a1a3997991de761603a

SHA512
538523ca4a06f824d3b8168107516e9bafefd54c21ec328c538be9323e1da2accb01f6fb8b6dfae5013e9f382f0159ed8c41ee491514adf5702aecf2ece5d870

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe

Filesize
259KB

MD5
46f5111c7c871155091f0a7810b02235

SHA1
1a6e436333ba021e6971afd72c1ab880e3732308

SHA256
c0ee79dfade9330fa524500595c9a3489be87d8017e18a1a3997991de761603a

SHA512
538523ca4a06f824d3b8168107516e9bafefd54c21ec328c538be9323e1da2accb01f6fb8b6dfae5013e9f382f0159ed8c41ee491514adf5702aecf2ece5d870

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\explorer.exe

Filesize
259KB

MD5
46f5111c7c871155091f0a7810b02235

SHA1
1a6e436333ba021e6971afd72c1ab880e3732308

SHA256
c0ee79dfade9330fa524500595c9a3489be87d8017e18a1a3997991de761603a

SHA512
538523ca4a06f824d3b8168107516e9bafefd54c21ec328c538be9323e1da2accb01f6fb8b6dfae5013e9f382f0159ed8c41ee491514adf5702aecf2ece5d870

Download Submit
memory/1964-153-0x0000000000F00000-0x0000000000F10000-memory.dmp

Filesize
64KB

Download
memory/1964-154-0x000000001B7C0000-0x000000001B85C000-memory.dmp

Filesize
624KB

Download
memory/1964-155-0x0000000000D40000-0x0000000000D48000-memory.dmp

Filesize
32KB

Download
memory/1964-156-0x0000000000F00000-0x0000000000F10000-memory.dmp

Filesize
64KB

Download
memory/1964-157-0x0000000000F00000-0x0000000000F10000-memory.dmp

Filesize
64KB

Download
memory/4536-139-0x0000000001630000-0x000000000163C000-memory.dmp

Filesize
48KB

Download
memory/4536-140-0x000000001C880000-0x000000001CD4E000-memory.dmp

Filesize
4.8MB

Download
memory/4536-135-0x0000000001640000-0x0000000001650000-memory.dmp

Filesize
64KB

Download
memory/4536-138-0x000000001BCB0000-0x000000001BD56000-memory.dmp

Filesize
664KB

Download
memory/4536-134-0x0000000001510000-0x0000000001520000-memory.dmp

Filesize
64KB

Download
memory/4536-133-0x0000000000AD0000-0x0000000000B18000-memory.dmp

Filesize
288KB

Download

Analysis

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