njrat | 47de3e92f52ef60f92bb5b17a23419517f580de69b1051ef00e6eaea1ecabda0

Analysis

max time kernel
154s
max time network
159s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 22:17

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General

Target
8aac74ef8d70805266859d881bd97748.exe
Size 402KB
Sample240202-17ngaabehm
SHA256 47de3e92f52ef60f92bb5b17a23419517f580de69b1051ef00e6eaea1ecabda0
MD5 8aac74ef8d70805266859d881bd97748
SHA1 a4760dcc8e80b93685a473250713ca18f47051ec
SHA512 bf21505ee93db933708725813710839e4ae7b3335d99e840efd7f1e3f987e38731726e377033be4bf8138bb7fcfaf409be2068e61e35c1073b2b94cf06029ab4
SSDEEP 6144:jmaKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgU:YSmLAuEY71fviagATFmebVQDcYcg
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

njrat pdf evasion persistence trojan upx

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

hhhmach.ddns.net:1177

Mutex

5cd8f17f4086744065eb0992a09e05a2

Attributes

reg_key
5cd8f17f4086744065eb0992a09e05a2
splitter
|'|'|

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
4832	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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	test.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe	Trojan.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\5cd8f17f4086744065eb0992a09e05a2.exe	Trojan.exe

Executes dropped EXE 2 IoCs

pid	Process
2992	test.exe
4684	Trojan.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1368-0-0x0000000000400000-0x00000000004FB000-memory.dmp	upx
behavioral2/memory/1368-1-0x0000000000400000-0x00000000004FB000-memory.dmp	upx
behavioral2/memory/1368-9-0x0000000000400000-0x00000000004FB000-memory.dmp	upx
behavioral2/memory/1368-24-0x0000000000400000-0x00000000004FB000-memory.dmp	upx

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-1-5-21-3073191680-435865314-2862784915-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .."	Trojan.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\5cd8f17f4086744065eb0992a09e05a2 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\Trojan.exe\" .."	Trojan.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3980	1368	WerFault.exe	83
1312	1368	WerFault.exe	83

Suspicious behavior: EnumeratesProcesses 39 IoCs

pid	Process
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe
4684	Trojan.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4684	Trojan.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1368 wrote to memory of 876	1368	8aac74ef8d70805266859d881bd97748.exe	88
PID 1368 wrote to memory of 876	1368	8aac74ef8d70805266859d881bd97748.exe	88
PID 1368 wrote to memory of 876	1368	8aac74ef8d70805266859d881bd97748.exe	88
PID 876 wrote to memory of 2992	876	cmd.exe	89
PID 876 wrote to memory of 2992	876	cmd.exe	89
PID 876 wrote to memory of 2992	876	cmd.exe	89
PID 2992 wrote to memory of 4684	2992	test.exe	90
PID 2992 wrote to memory of 4684	2992	test.exe	90
PID 2992 wrote to memory of 4684	2992	test.exe	90
PID 4684 wrote to memory of 4832	4684	Trojan.exe	91
PID 4684 wrote to memory of 4832	4684	Trojan.exe	91
PID 4684 wrote to memory of 4832	4684	Trojan.exe	91

C:\Users\Admin\AppData\Local\Temp\8aac74ef8d70805266859d881bd97748.exe
"C:\Users\Admin\AppData\Local\Temp\8aac74ef8d70805266859d881bd97748.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1368
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1368 -s 240
  2⤵
  - Program crash
  PID:3980
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c test.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:876
- - C:\Users\Admin\AppData\Local\Temp\test.exe
    test.exe
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\Users\Admin\AppData\Local\Temp\Trojan.exe
      "C:\Users\Admin\AppData\Local\Temp\Trojan.exe"
      4⤵
      Drops startup file
      Executes dropped EXE
      Adds Run key to start application
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:4684
    - - C:\Windows\SysWOW64\netsh.exe
        
        netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
        5⤵
        Modifies Windows Firewall
        
        PID:4832
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1368 -s 164
  2⤵
  - Program crash
  PID:1312

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 384 -p 1368 -ip 1368
1⤵
PID:60

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 1368 -ip 1368
1⤵
PID:3292

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

test.exe

Path C:\Users\Admin\AppData\Local\Temp\test.exe
Size 78KB
SHA256 71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb
MD5 42c5854aa0709d8bf6c28ea82c67b9a5
SHA1 124ea473f0572009de85a4a46f361109f4fae7d6
SHA512 c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a
SSDEEP 1536:57JM7EhKhG29juLFOoUslM0l00hEmMWmgJUdk:HMwIA29AOTslM020hEZW2dk
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1368-1-0x0000000000400000-0x00000000004FB000-memory.dmp

Download

memory/1368-9-0x0000000000400000-0x00000000004FB000-memory.dmp

Download

memory/1368-24-0x0000000000400000-0x00000000004FB000-memory.dmp

Download

memory/1368-0-0x0000000000400000-0x00000000004FB000-memory.dmp

Download

memory/2992-22-0x0000000074930000-0x0000000074EE1000-memory.dmp

Download

memory/2992-6-0x0000000074930000-0x0000000074EE1000-memory.dmp

Download

memory/2992-7-0x0000000074930000-0x0000000074EE1000-memory.dmp

Download

memory/2992-8-0x0000000000D80000-0x0000000000D90000-memory.dmp

Download

memory/4684-21-0x0000000074930000-0x0000000074EE1000-memory.dmp

Download

memory/4684-20-0x0000000000F30000-0x0000000000F40000-memory.dmp

Download

memory/4684-18-0x0000000074930000-0x0000000074EE1000-memory.dmp

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memory/4684-25-0x0000000074930000-0x0000000074EE1000-memory.dmp

Download

memory/4684-26-0x0000000000F30000-0x0000000000F40000-memory.dmp

Download

memory/4684-27-0x0000000000F30000-0x0000000000F40000-memory.dmp

Download

memory/4684-28-0x0000000000F30000-0x0000000000F40000-memory.dmp

Download

memory/4684-29-0x0000000000F30000-0x0000000000F40000-memory.dmp

Download

memory/4684-30-0x0000000000F30000-0x0000000000F40000-memory.dmp

Download

memory/4684-31-0x0000000000F30000-0x0000000000F40000-memory.dmp

Download

memory/4684-32-0x0000000000F30000-0x0000000000F40000-memory.dmp

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