njrat | 2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95

General

Target

2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
Size

911KB
MD5

5947d179c77c96f7a4b174d277725383
SHA1

f925ac6d657e01b5281c0cb1e5aaf01beddb8281
SHA256

2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95
SHA512

9625c7406a8f501996242bdffdef259f3804b23b6ddac53d74be2e3a4cd1ced12a0ab4bd91cf91dded4d9003f1bee7122c56d47ab54b9e48dbcea54522755fdf
SSDEEP

12288:Atb20Qc3lT7af41ePBRYuQLKpqeUhbTv5OFgNuPPpHSga+r91G0X6A:Atb20pkaCqT5TBWgNQ7a+r9FX6A

Score

10^/10

njrat hamza evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

hamza

C2

rrs123.no-ip.org:60

Mutex

6188e1c717e994538c5502a5488c8d23

Attributes

reg_key
6188e1c717e994538c5502a5488c8d23
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
5008	83528.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1624	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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	83528.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WerFault = "C:\\Users\\Admin\\AppData\\Roaming\\83528.exe"	83528.exe

AutoIT Executable 2 IoCs

AutoIT scripts compiled to PE executables.

resource	yara_rule
behavioral2/files/0x0009000000022f6d-134.dat	autoit_exe
behavioral2/files/0x0009000000022f6d-133.dat	autoit_exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5008 set thread context of 4948	5008	83528.exe	81

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

System Information Discovery
T1082

NTFS ADS 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Local\Temp\2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe:Zone.Identifier:$DATA	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
File created	C:\Users\Admin\AppData\Roaming\83528.exe\:Zone.Identifier:$DATA	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\83528.exe:Zone.Identifier:$DATA	83528.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe
Token: 33	4948	vbc.exe
Token: SeIncBasePriorityPrivilege	4948	vbc.exe

Suspicious use of FindShellTrayWindow 9 IoCs

pid	Process
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
5008	83528.exe
5008	83528.exe
5008	83528.exe

Suspicious use of SendNotifyMessage 9 IoCs

pid	Process
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
5008	83528.exe
5008	83528.exe
5008	83528.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 5008	4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe	79
PID 4728 wrote to memory of 5008	4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe	79
PID 4728 wrote to memory of 5008	4728	2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe	79
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 5008 wrote to memory of 4948	5008	83528.exe	81
PID 4948 wrote to memory of 1624	4948	vbc.exe	82
PID 4948 wrote to memory of 1624	4948	vbc.exe	82
PID 4948 wrote to memory of 1624	4948	vbc.exe	82

C:\Users\Admin\AppData\Local\Temp\2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe
"C:\Users\Admin\AppData\Local\Temp\2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95.exe"
1⤵
- Checks computer location settings
- NTFS ADS
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Users\Admin\AppData\Roaming\83528.exe
  "C:\Users\Admin\AppData\Roaming\83528.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - NTFS ADS
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:5008
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
    3⤵
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4948
  - - C:\Windows\SysWOW64\netsh.exe
      netsh firewall add allowedprogram "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe" "vbc.exe" ENABLE
      4⤵
      Modifies Windows Firewall
      PID:1624

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

1

T1064

Persistence

Modify Existing Service

1

T1031

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

Scripting

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\rr

Filesize
23KB

MD5
0525453d1560ba9180862713b0be1038

SHA1
e8170a9b3e7759ccca7a65d3ce2238baad8fbb21

SHA256
b0d72b35d31f6f417431a84bbfd9c7748e12c790bc85de03fa8303b40a6fdc79

SHA512
a750d5413dcd807e1b8de34288ca5e3c37e0e169b105b829c60b0b5bab485b9463e17e0b26d70c4b6a558b2d95f9d8a667b1bab533b8c1580bb392421df91598

Download Submit
C:\Users\Admin\AppData\Roaming\83528.exe

Filesize
911KB

MD5
5947d179c77c96f7a4b174d277725383

SHA1
f925ac6d657e01b5281c0cb1e5aaf01beddb8281

SHA256
2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95

SHA512
9625c7406a8f501996242bdffdef259f3804b23b6ddac53d74be2e3a4cd1ced12a0ab4bd91cf91dded4d9003f1bee7122c56d47ab54b9e48dbcea54522755fdf

Download Submit
C:\Users\Admin\AppData\Roaming\83528.exe

Filesize
911KB

MD5
5947d179c77c96f7a4b174d277725383

SHA1
f925ac6d657e01b5281c0cb1e5aaf01beddb8281

SHA256
2c1fd59ada63ebd87def7bda6f66a2494e2e21ff971022bb42b175617c398a95

SHA512
9625c7406a8f501996242bdffdef259f3804b23b6ddac53d74be2e3a4cd1ced12a0ab4bd91cf91dded4d9003f1bee7122c56d47ab54b9e48dbcea54522755fdf

Download Submit
memory/4948-137-0x0000000000400000-0x000000000040C000-memory.dmp

Filesize
48KB

Download
memory/4948-138-0x0000000005870000-0x000000000590C000-memory.dmp

Filesize
624KB

Download
memory/4948-139-0x0000000005EC0000-0x0000000006464000-memory.dmp

Filesize
5.6MB

Download
memory/4948-141-0x0000000005A90000-0x0000000005B22000-memory.dmp

Filesize
584KB

Download
memory/4948-142-0x0000000005A60000-0x0000000005A6A000-memory.dmp

Filesize
40KB

Download

Analysis

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