njrat | 8906e1ecddea0365056df3736940fbf03c5efb66bf593b5e04f847de80ac4619 | Triage

Analysis

max time kernel
149s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/12/2023, 20:29 UTC

Sharing

Report Analysis Logs

General

Target

1104d39f197f3a8cfe9a52f7d15917f2.exe
Size

402KB
MD5

1104d39f197f3a8cfe9a52f7d15917f2
SHA1

314939176cd3e71c92faca3057c28c9b27674b4e
SHA256

8906e1ecddea0365056df3736940fbf03c5efb66bf593b5e04f847de80ac4619
SHA512

ae9b2b233c1a5eb5d32d0cbe3c8c9df49a801dcb1188ea4f4fd056ba8fa755f45bfe71a3e5225618b0bea4a04e2ba6ccae03b15aa317254e2f83fa0bb26bb190
SSDEEP

6144:7maKVBGmE84IMNv55giU0pKiFYHxfx15RvOagakZBxkTN2gmeGcFnVQb/DAYbDgU:ASmLAuEY71fviagATFmebVQDcYcg

Score

10^/10

njrat pdf evasion persistence trojan upx

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

pdf

C2

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 1 TTPs 1 IoCs

Windows Service

pid	Process
3016	netsh.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
824	test.exe
2396	Trojan.exe

Loads dropped DLL 2 IoCs

pid	Process
2224	cmd.exe
824	test.exe

UPX packed file 2 IoCs

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

resource	yara_rule
behavioral1/memory/3044-0-0x0000000000400000-0x00000000004FB000-memory.dmp	upx
behavioral1/memory/3044-17-0x0000000000400000-0x00000000004FB000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

Registry Run Keys / Startup Folder

Modify Registry

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3818056530-936619650-3554021955-1000\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

Suspicious behavior: EnumeratesProcesses 32 IoCs

pid	Process
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe
2396	Trojan.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	Trojan.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3044 wrote to memory of 2224	3044	1104d39f197f3a8cfe9a52f7d15917f2.exe	29
PID 3044 wrote to memory of 2224	3044	1104d39f197f3a8cfe9a52f7d15917f2.exe	29
PID 3044 wrote to memory of 2224	3044	1104d39f197f3a8cfe9a52f7d15917f2.exe	29
PID 3044 wrote to memory of 2224	3044	1104d39f197f3a8cfe9a52f7d15917f2.exe	29
PID 2224 wrote to memory of 824	2224	cmd.exe	30
PID 2224 wrote to memory of 824	2224	cmd.exe	30
PID 2224 wrote to memory of 824	2224	cmd.exe	30
PID 2224 wrote to memory of 824	2224	cmd.exe	30
PID 824 wrote to memory of 2396	824	test.exe	33
PID 824 wrote to memory of 2396	824	test.exe	33
PID 824 wrote to memory of 2396	824	test.exe	33
PID 824 wrote to memory of 2396	824	test.exe	33
PID 2396 wrote to memory of 3016	2396	Trojan.exe	32
PID 2396 wrote to memory of 3016	2396	Trojan.exe	32
PID 2396 wrote to memory of 3016	2396	Trojan.exe	32
PID 2396 wrote to memory of 3016	2396	Trojan.exe	32

C:\Users\Admin\AppData\Local\Temp\1104d39f197f3a8cfe9a52f7d15917f2.exe
"C:\Users\Admin\AppData\Local\Temp\1104d39f197f3a8cfe9a52f7d15917f2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:3044
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c test.exe
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2224
- - C:\Users\Admin\AppData\Local\Temp\test.exe
    test.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:824
  - - 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:2396

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\Trojan.exe" "Trojan.exe" ENABLE
1⤵
- Modifies Windows Firewall
PID:3016

Network

DNS

hhhmach.ddns.net

Trojan.exe

Remote address:

8.8.8.8:53

Request

hhhmach.ddns.net

IN A

Response

hhhmach.ddns.net

IN A

0.0.0.0
DNS

hhhmach.ddns.net

Trojan.exe

Remote address:

8.8.8.8:53

Request

hhhmach.ddns.net

IN A

No results found

8.8.8.8:53

hhhmach.ddns.net

dns

Trojan.exe

124 B
78 B
2
1

DNS Request

hhhmach.ddns.net

DNS Request

hhhmach.ddns.net

DNS Response

0.0.0.0

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Privilege Escalation

Boot or Logon Autostart Execution

Registry Run Keys / Startup Folder

Create or Modify System Process

Windows Service

Defense Evasion

Modify Registry

Credential Access

Discovery

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\test.exe

Filesize
78KB

MD5
42c5854aa0709d8bf6c28ea82c67b9a5

SHA1
124ea473f0572009de85a4a46f361109f4fae7d6

SHA256
71e1add662041fee9ff0ddf0139154cf006538559af45f34047aac91efb1b8eb

SHA512
c0f4412f2237138b5b66ecc285d7f44bacd67ae23feb0a55561cd4f7850ee6b0fd1b1dac3d2725ed4932aaf155b0fbda284a69b07594789bdb4cbcf0f499d95a

Download Submit
memory/824-5-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/824-6-0x0000000001F30000-0x0000000001F70000-memory.dmp

Filesize
256KB

Download
memory/824-7-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/824-15-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-16-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/2396-19-0x00000000002B0000-0x00000000002F0000-memory.dmp

Filesize
256KB

Download
memory/2396-20-0x00000000742D0000-0x000000007487B000-memory.dmp

Filesize
5.7MB

Download
memory/3044-0-0x0000000000400000-0x00000000004FB000-memory.dmp

Filesize
1004KB

Download
memory/3044-17-0x0000000000400000-0x00000000004FB000-memory.dmp

Filesize
1004KB

Download