njrat | c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d

General

Target

c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe
Size

534KB
MD5

d40ac2e569fa68fa0bb8a4174cade913
SHA1

c5671c34df1366dede12175e1f4764810a50f78f
SHA256

c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d
SHA512

45ad244f2bf1765d53f96d53f31129b26311f848688232822791032c49825c488835f2e1fbd8d87377758f20d81081c70e3d32a088cd0e0ae476109d1200855a

Score

10^/10

njrat zumbiee evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.6.4

Botnet

Zumbiee

C2

Contahacker.ddns.net:1177

Mutex

c2372ce2aec065ce2621c091aa8fb2a0

Attributes

reg_key
c2372ce2aec065ce2621c091aa8fb2a0
splitter
|'|'|

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Executes dropped EXE 1 IoCs

Processes:

dllhost.exe

pid process

952 dllhost.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1240 netsh.exe

pid	process
952	dllhost.exe

pid	process
1240	netsh.exe

Drops startup file 2 IoCs

Processes:

dllhost.exe

description	ioc	process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c2372ce2aec065ce2621c091aa8fb2a0.exe	dllhost.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\c2372ce2aec065ce2621c091aa8fb2a0.exe	dllhost.exe

Loads dropped DLL 1 IoCs

Processes:

c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe

pid process

1884 c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe

pid	process
1884	c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

dllhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Windows\CurrentVersion\Run\c2372ce2aec065ce2621c091aa8fb2a0 = "\"C:\\Users\\Admin\\dllhost.exe\" .."	dllhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\c2372ce2aec065ce2621c091aa8fb2a0 = "\"C:\\Users\\Admin\\dllhost.exe\" .."	dllhost.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 8 IoCs

Processes:

dllhost.exe

pid process

952 dllhost.exe
952 dllhost.exe
952 dllhost.exe
952 dllhost.exe
952 dllhost.exe
952 dllhost.exe
952 dllhost.exe
952 dllhost.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

dllhost.exe

description pid process

Token: SeDebugPrivilege 952 dllhost.exe

pid	process
952	dllhost.exe
952	dllhost.exe
952	dllhost.exe
952	dllhost.exe
952	dllhost.exe
952	dllhost.exe
952	dllhost.exe
952	dllhost.exe

description	pid	process
Token: SeDebugPrivilege	952	dllhost.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exedllhost.exe

description	pid	process	target process
PID 1884 wrote to memory of 952	1884	c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe	dllhost.exe
PID 1884 wrote to memory of 952	1884	c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe	dllhost.exe
PID 1884 wrote to memory of 952	1884	c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe	dllhost.exe
PID 1884 wrote to memory of 952	1884	c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe	dllhost.exe
PID 952 wrote to memory of 1240	952	dllhost.exe	netsh.exe
PID 952 wrote to memory of 1240	952	dllhost.exe	netsh.exe
PID 952 wrote to memory of 1240	952	dllhost.exe	netsh.exe
PID 952 wrote to memory of 1240	952	dllhost.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe
"C:\Users\Admin\AppData\Local\Temp\c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1884

C:\Users\Admin\dllhost.exe
"C:\Users\Admin\dllhost.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:952

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\dllhost.exe" "dllhost.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1240

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\dllhost.exe
Filesize
534KB

MD5
d40ac2e569fa68fa0bb8a4174cade913

SHA1
c5671c34df1366dede12175e1f4764810a50f78f

SHA256
c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d

SHA512
45ad244f2bf1765d53f96d53f31129b26311f848688232822791032c49825c488835f2e1fbd8d87377758f20d81081c70e3d32a088cd0e0ae476109d1200855a

Download Submit
C:\Users\Admin\dllhost.exe
Filesize
534KB

MD5
d40ac2e569fa68fa0bb8a4174cade913

SHA1
c5671c34df1366dede12175e1f4764810a50f78f

SHA256
c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d

SHA512
45ad244f2bf1765d53f96d53f31129b26311f848688232822791032c49825c488835f2e1fbd8d87377758f20d81081c70e3d32a088cd0e0ae476109d1200855a

Download Submit
\Users\Admin\dllhost.exe
Filesize
534KB

MD5
d40ac2e569fa68fa0bb8a4174cade913

SHA1
c5671c34df1366dede12175e1f4764810a50f78f

SHA256
c4f47067013e3c7ac4fb0ce8457b69a71b073d8f10155e39aaea0c5e5eb7000d

SHA512
45ad244f2bf1765d53f96d53f31129b26311f848688232822791032c49825c488835f2e1fbd8d87377758f20d81081c70e3d32a088cd0e0ae476109d1200855a

Download Submit
memory/952-57-0x0000000000000000-mapping.dmp

Download
memory/952-60-0x00000000002D0000-0x000000000035C000-memory.dmp

Filesize
560KB

Download
memory/1240-61-0x0000000000000000-mapping.dmp

Download
memory/1240-62-0x00000000759E1000-0x00000000759E3000-memory.dmp

Filesize
8KB

Download
memory/1884-54-0x0000000000110000-0x000000000019C000-memory.dmp

Filesize
560KB

Download
memory/1884-55-0x0000000000320000-0x000000000032E000-memory.dmp

Filesize
56KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads