njrat | e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf

General

Target

e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.exe
Size

29KB
MD5

dbddfbfd5cfabd4bd9241ed8adbcb5ae
SHA1

29a04649ffc882f603e1de1b9f5beafe361b322d
SHA256

e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf
SHA512

ed9c9f3a50b86dd7a9abef515b3fb6ab0d0dcb6a0bd2852fa0066c487263b12ef2cea5a8cd6fb4a6f6c0ba229b7d81fb6d1262d8565cb8bb3218ac73f7c9873b
SSDEEP

384:ewIpl79TbsiKQ1lZl5Z5n7SWmqDyLXek8GBsbh0w4wlAokw9OhgOL1vYRGOZzXZa:e7tsiKop9n7MqoXeOBKh0p29SgRxa

Score

10^/10

njrat brave~hacker evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Brave~HAcker

C2

danamuhammad12.no-ip.org:4554

Mutex

97335ed968c8d21501810d2516770677

Attributes

reg_key
97335ed968c8d21501810d2516770677
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
956	csrss.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1404	netsh.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\97335ed968c8d21501810d2516770677.exe	csrss.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\97335ed968c8d21501810d2516770677.exe	csrss.exe

Loads dropped DLL 1 IoCs

pid	Process
880	e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.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-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\97335ed968c8d21501810d2516770677 = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\" .."	csrss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\97335ed968c8d21501810d2516770677 = "\"C:\\Users\\Admin\\AppData\\Roaming\\csrss.exe\" .."	csrss.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 16 IoCs

pid	Process
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe
956	csrss.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	956	csrss.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 880 wrote to memory of 956	880	e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.exe	28
PID 880 wrote to memory of 956	880	e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.exe	28
PID 880 wrote to memory of 956	880	e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.exe	28
PID 880 wrote to memory of 956	880	e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.exe	28
PID 956 wrote to memory of 1404	956	csrss.exe	30
PID 956 wrote to memory of 1404	956	csrss.exe	30
PID 956 wrote to memory of 1404	956	csrss.exe	30
PID 956 wrote to memory of 1404	956	csrss.exe	30

C:\Users\Admin\AppData\Local\Temp\e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.exe
"C:\Users\Admin\AppData\Local\Temp\e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:880
- C:\Users\Admin\AppData\Roaming\csrss.exe
  "C:\Users\Admin\AppData\Roaming\csrss.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:956
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\csrss.exe" "csrss.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1404

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\Roaming\csrss.exe

Filesize
29KB

MD5
dbddfbfd5cfabd4bd9241ed8adbcb5ae

SHA1
29a04649ffc882f603e1de1b9f5beafe361b322d

SHA256
e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf

SHA512
ed9c9f3a50b86dd7a9abef515b3fb6ab0d0dcb6a0bd2852fa0066c487263b12ef2cea5a8cd6fb4a6f6c0ba229b7d81fb6d1262d8565cb8bb3218ac73f7c9873b

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

Filesize
29KB

MD5
dbddfbfd5cfabd4bd9241ed8adbcb5ae

SHA1
29a04649ffc882f603e1de1b9f5beafe361b322d

SHA256
e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf

SHA512
ed9c9f3a50b86dd7a9abef515b3fb6ab0d0dcb6a0bd2852fa0066c487263b12ef2cea5a8cd6fb4a6f6c0ba229b7d81fb6d1262d8565cb8bb3218ac73f7c9873b

Download Submit
\Users\Admin\AppData\Roaming\csrss.exe

Filesize
29KB

MD5
dbddfbfd5cfabd4bd9241ed8adbcb5ae

SHA1
29a04649ffc882f603e1de1b9f5beafe361b322d

SHA256
e604a22864307f0703af03ffc10b60576b6bd35c0eeff688a18f777ca2db89cf

SHA512
ed9c9f3a50b86dd7a9abef515b3fb6ab0d0dcb6a0bd2852fa0066c487263b12ef2cea5a8cd6fb4a6f6c0ba229b7d81fb6d1262d8565cb8bb3218ac73f7c9873b

Download Submit
memory/880-54-0x0000000075831000-0x0000000075833000-memory.dmp

Filesize
8KB

Download
memory/880-55-0x0000000074CE0000-0x000000007528B000-memory.dmp

Filesize
5.7MB

Download
memory/880-61-0x0000000074CE0000-0x000000007528B000-memory.dmp

Filesize
5.7MB

Download
memory/956-64-0x0000000074CE0000-0x000000007528B000-memory.dmp

Filesize
5.7MB

Download
memory/956-65-0x0000000074CE0000-0x000000007528B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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