njrat | 568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/11/2022, 15:10

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General

Target

NewXP.exe
Size

54KB
MD5

828c84060984c00605ac9c89d83dff71
SHA1

eee2dfa35ef74d9d27dfd2bc7d0d45f5f5e85c1a
SHA256

568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4
SHA512

2caa482833ef4fc50217d6276fd52aebd6d102a3410fc3c41280e170ca38e87258761f710ab34a2114373506fb1751a9c501ad404e89405d01794fdef7a72d4e
SSDEEP

768:Pn2MHF3lFdS7kxStmaiTrM+rMRa8NugPtQvViHqcCr:PnpF3lPS4xStEs+gRJNX0Dxr

Score

10^/10

njrat ratatouille evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

Ratatouille

nndmb-42891.portmap.host:42891

Mutex

cd82c2cc4ef9f6cee6f8aa9412365ea4

Attributes

reg_key
cd82c2cc4ef9f6cee6f8aa9412365ea4
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4776	Themer.exe

Modifies Windows Firewall 1 TTPs 2 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4824	netsh.exe
2896	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	NewXP.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cd82c2cc4ef9f6cee6f8aa9412365ea4.exe	Themer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\cd82c2cc4ef9f6cee6f8aa9412365ea4.exe	Themer.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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\cd82c2cc4ef9f6cee6f8aa9412365ea4 = "\"C:\\Windows\\Themer.exe\" .."	Themer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\cd82c2cc4ef9f6cee6f8aa9412365ea4 = "\"C:\\Windows\\Themer.exe\" .."	Themer.exe

Drops autorun.inf file 1 TTPs 3 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

description	ioc	Process
File created	C:\autorun.inf	Themer.exe
File opened for modification	C:\autorun.inf	Themer.exe
File created	D:\autorun.inf	Themer.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\Themer.exe	Themer.exe
File created	C:\Windows\Themer.exe	NewXP.exe
File opened for modification	C:\Windows\Themer.exe	NewXP.exe

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

System Information Discovery
T1082

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
308	PING.EXE

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe
4776	Themer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4776	Themer.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4776	Themer.exe
Token: 33	4776	Themer.exe
Token: SeIncBasePriorityPrivilege	4776	Themer.exe
Token: 33	4776	Themer.exe
Token: SeIncBasePriorityPrivilege	4776	Themer.exe
Token: 33	4776	Themer.exe
Token: SeIncBasePriorityPrivilege	4776	Themer.exe
Token: 33	4776	Themer.exe
Token: SeIncBasePriorityPrivilege	4776	Themer.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2556 wrote to memory of 4776	2556	NewXP.exe	81
PID 2556 wrote to memory of 4776	2556	NewXP.exe	81
PID 2556 wrote to memory of 4776	2556	NewXP.exe	81
PID 4776 wrote to memory of 4824	4776	Themer.exe	82
PID 4776 wrote to memory of 4824	4776	Themer.exe	82
PID 4776 wrote to memory of 4824	4776	Themer.exe	82
PID 4776 wrote to memory of 2896	4776	Themer.exe	85
PID 4776 wrote to memory of 2896	4776	Themer.exe	85
PID 4776 wrote to memory of 2896	4776	Themer.exe	85
PID 4776 wrote to memory of 4528	4776	Themer.exe	87
PID 4776 wrote to memory of 4528	4776	Themer.exe	87
PID 4776 wrote to memory of 4528	4776	Themer.exe	87
PID 4528 wrote to memory of 308	4528	cmd.exe	89
PID 4528 wrote to memory of 308	4528	cmd.exe	89
PID 4528 wrote to memory of 308	4528	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\NewXP.exe
"C:\Users\Admin\AppData\Local\Temp\NewXP.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:2556
- C:\Windows\Themer.exe
  "C:\Windows\Themer.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Drops autorun.inf file
  - Drops file in Windows directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4776
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Windows\Themer.exe" "Themer.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4824
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall delete allowedprogram "C:\Windows\Themer.exe"
    3⤵
    - Modifies Windows Firewall
    PID:2896
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe /k ping 0 & del "C:\Windows\Themer.exe" & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4528
  - - C:\Windows\SysWOW64\PING.EXE
      ping 0
      4⤵
      Runs ping.exe
      PID:308

Network

MITRE ATT&CK Enterprise v6

Initial Access

Replication Through Removable Media

T1091

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

Remote System Discovery

T1018

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\Themer.exe

Filesize
54KB

MD5
828c84060984c00605ac9c89d83dff71

SHA1
eee2dfa35ef74d9d27dfd2bc7d0d45f5f5e85c1a

SHA256
568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4

SHA512
2caa482833ef4fc50217d6276fd52aebd6d102a3410fc3c41280e170ca38e87258761f710ab34a2114373506fb1751a9c501ad404e89405d01794fdef7a72d4e

Download Submit
C:\Windows\Themer.exe

Filesize
54KB

MD5
828c84060984c00605ac9c89d83dff71

SHA1
eee2dfa35ef74d9d27dfd2bc7d0d45f5f5e85c1a

SHA256
568097c7465680d1fcede9788b1226266b28f86522cc8630d1f7bedb2c84f8f4

SHA512
2caa482833ef4fc50217d6276fd52aebd6d102a3410fc3c41280e170ca38e87258761f710ab34a2114373506fb1751a9c501ad404e89405d01794fdef7a72d4e

Download Submit
memory/2556-132-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download
memory/2556-136-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download
memory/4776-137-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download
memory/4776-139-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download
memory/4776-142-0x00000000745F0000-0x0000000074BA1000-memory.dmp

Filesize
5.7MB

Download