njrat | fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48

General

Target

fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.exe
Size

29KB
MD5

805308c8764c6580933c60d75d82ee5b
SHA1

b8c516f232d0e2929414f7de05303fed1e5c1b0f
SHA256

fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48
SHA512

594f3d646b3aff93554df05c3af41f2f4da3c32cf2fa0740a00d6d32968bb0972226f9789c8925034a65bcd987702d8a2e086a7474274ce120503d9d968e44cf
SSDEEP

384:1UHEBl7p3hUw2s7bD55gEKemqDSqre/IDGBsbh0w4wlAokw9OhgOL1vYRGOZzeZu:p7bUw2C3kEcqNreHBKh0p29SgRIu

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

ahyatezy15.no-ip.biz:1177

Mutex

7c5ab2d4b3ee0e1b3e9cf876e75dff1f

Attributes

reg_key
7c5ab2d4b3ee0e1b3e9cf876e75dff1f
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
564	memo.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1900	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7c5ab2d4b3ee0e1b3e9cf876e75dff1f.exe	memo.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7c5ab2d4b3ee0e1b3e9cf876e75dff1f.exe	memo.exe

Loads dropped DLL 1 IoCs

pid	Process
584	fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.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-1-5-21-1214520366-621468234-4062160515-1000\Software\Microsoft\Windows\CurrentVersion\Run\7c5ab2d4b3ee0e1b3e9cf876e75dff1f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\memo.exe\" .."	memo.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\7c5ab2d4b3ee0e1b3e9cf876e75dff1f = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\memo.exe\" .."	memo.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 14 IoCs

pid	Process
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe
564	memo.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	564	memo.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 584 wrote to memory of 564	584	fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.exe	28
PID 584 wrote to memory of 564	584	fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.exe	28
PID 584 wrote to memory of 564	584	fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.exe	28
PID 584 wrote to memory of 564	584	fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.exe	28
PID 564 wrote to memory of 1900	564	memo.exe	29
PID 564 wrote to memory of 1900	564	memo.exe	29
PID 564 wrote to memory of 1900	564	memo.exe	29
PID 564 wrote to memory of 1900	564	memo.exe	29

C:\Users\Admin\AppData\Local\Temp\fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.exe
"C:\Users\Admin\AppData\Local\Temp\fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:584
- C:\Users\Admin\AppData\Local\Temp\memo.exe
  "C:\Users\Admin\AppData\Local\Temp\memo.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:564
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\memo.exe" "memo.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1900

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\memo.exe

Filesize
29KB

MD5
805308c8764c6580933c60d75d82ee5b

SHA1
b8c516f232d0e2929414f7de05303fed1e5c1b0f

SHA256
fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48

SHA512
594f3d646b3aff93554df05c3af41f2f4da3c32cf2fa0740a00d6d32968bb0972226f9789c8925034a65bcd987702d8a2e086a7474274ce120503d9d968e44cf

Download Submit
C:\Users\Admin\AppData\Local\Temp\memo.exe

Filesize
29KB

MD5
805308c8764c6580933c60d75d82ee5b

SHA1
b8c516f232d0e2929414f7de05303fed1e5c1b0f

SHA256
fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48

SHA512
594f3d646b3aff93554df05c3af41f2f4da3c32cf2fa0740a00d6d32968bb0972226f9789c8925034a65bcd987702d8a2e086a7474274ce120503d9d968e44cf

Download Submit
\Users\Admin\AppData\Local\Temp\memo.exe

Filesize
29KB

MD5
805308c8764c6580933c60d75d82ee5b

SHA1
b8c516f232d0e2929414f7de05303fed1e5c1b0f

SHA256
fa51b3f9f7dbd2afa4304c46a4510130cd40a28add2532d722b543bf864f5e48

SHA512
594f3d646b3aff93554df05c3af41f2f4da3c32cf2fa0740a00d6d32968bb0972226f9789c8925034a65bcd987702d8a2e086a7474274ce120503d9d968e44cf

Download Submit
memory/564-62-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download
memory/564-65-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download
memory/584-54-0x0000000076D71000-0x0000000076D73000-memory.dmp

Filesize
8KB

Download
memory/584-55-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download
memory/584-61-0x0000000074D50000-0x00000000752FB000-memory.dmp

Filesize
5.7MB

Download

Analysis

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