njrat | 35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d

General

Target

35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.exe
Size

29KB
MD5

51fc62ebbaea37b188705ba73f5a76af
SHA1

021a0cc05bc7ccdb8efb832147881a4e64812e88
SHA256

35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d
SHA512

9839dcb4d5885ca1e152e6b826dffc5cd23491d2aeebc01036473a9bd4ed7839a8372ca886ac8c73dd28563b5f4c10a98a58bc4fedda0f71bf5494ae9f3ab752
SSDEEP

384:dZCINl7rZt4AgSTnd5fGmjmumqD418+eYKGBsbh0w4wlAokw9OhgOL1vYRGOZzq/:d/7v4AgMdgmjAq8XeIBKh0p29SgRMl

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

HacKed

C2

mamostayanpoolllll.ddns.net:1177

Mutex

368fc7f563096ad51849f0d2c298fc08

Attributes

reg_key
368fc7f563096ad51849f0d2c298fc08
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
1992	Skype.exe

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
1696	netsh.exe

Loads dropped DLL 1 IoCs

pid	Process
1884	35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.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\368fc7f563096ad51849f0d2c298fc08 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Skype.exe\" .."	Skype.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\368fc7f563096ad51849f0d2c298fc08 = "\"C:\\Users\\Admin\\AppData\\Roaming\\Skype.exe\" .."	Skype.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
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe
1992	Skype.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	Skype.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1884 wrote to memory of 1992	1884	35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.exe	27
PID 1884 wrote to memory of 1992	1884	35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.exe	27
PID 1884 wrote to memory of 1992	1884	35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.exe	27
PID 1884 wrote to memory of 1992	1884	35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.exe	27
PID 1992 wrote to memory of 1696	1992	Skype.exe	28
PID 1992 wrote to memory of 1696	1992	Skype.exe	28
PID 1992 wrote to memory of 1696	1992	Skype.exe	28
PID 1992 wrote to memory of 1696	1992	Skype.exe	28

C:\Users\Admin\AppData\Local\Temp\35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.exe
"C:\Users\Admin\AppData\Local\Temp\35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1884
- C:\Users\Admin\AppData\Roaming\Skype.exe
  "C:\Users\Admin\AppData\Roaming\Skype.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1992
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Skype.exe" "Skype.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:1696

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\Skype.exe

Filesize
29KB

MD5
51fc62ebbaea37b188705ba73f5a76af

SHA1
021a0cc05bc7ccdb8efb832147881a4e64812e88

SHA256
35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d

SHA512
9839dcb4d5885ca1e152e6b826dffc5cd23491d2aeebc01036473a9bd4ed7839a8372ca886ac8c73dd28563b5f4c10a98a58bc4fedda0f71bf5494ae9f3ab752

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

Filesize
29KB

MD5
51fc62ebbaea37b188705ba73f5a76af

SHA1
021a0cc05bc7ccdb8efb832147881a4e64812e88

SHA256
35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d

SHA512
9839dcb4d5885ca1e152e6b826dffc5cd23491d2aeebc01036473a9bd4ed7839a8372ca886ac8c73dd28563b5f4c10a98a58bc4fedda0f71bf5494ae9f3ab752

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

Filesize
29KB

MD5
51fc62ebbaea37b188705ba73f5a76af

SHA1
021a0cc05bc7ccdb8efb832147881a4e64812e88

SHA256
35a04499338ae3ec8b0df0afc7b1fac5e052302ff0f16a18df9368bfc78f354d

SHA512
9839dcb4d5885ca1e152e6b826dffc5cd23491d2aeebc01036473a9bd4ed7839a8372ca886ac8c73dd28563b5f4c10a98a58bc4fedda0f71bf5494ae9f3ab752

Download Submit
memory/1884-54-0x0000000075571000-0x0000000075573000-memory.dmp

Filesize
8KB

Download
memory/1884-61-0x00000000740E0000-0x000000007468B000-memory.dmp

Filesize
5.7MB

Download
memory/1992-62-0x00000000740E0000-0x000000007468B000-memory.dmp

Filesize
5.7MB

Download
memory/1992-64-0x00000000740E0000-0x000000007468B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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