njrat | d3895a176b088ccea8de7ff50cabe73195a0a56bf4d32482dbc47bdcef733dc2

General

Target

a2b7067c9ed51dcf8eccb251da3bae89.exe
Size

37KB
MD5

a2b7067c9ed51dcf8eccb251da3bae89
SHA1

72dded4f4c1474804ab9508176a5587d71529d4b
SHA256

d3895a176b088ccea8de7ff50cabe73195a0a56bf4d32482dbc47bdcef733dc2
SHA512

609412d6e4147bf87cc8481c7fec9b9c39c540042879cbabc916b007942df21fcc0ed05f0cefe9e01b839ee3c9279368d4de9ccb19e1a7fe37a6bc3e82395d74
SSDEEP

384:snu1HCiMT3jBVbJsy8PVAbAoJvzv7QyYdbrAF+rMRTyN/0L+EcoinblneHQM3epb:0hbJP8PVsAafVYJrM+rMRa8NuIGt

Score

10^/10

njrat hack evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HACK

C2

journal-serial.at.playit.gg:59826

Mutex

6b15523b39e3dae4db6cae2a109d2d5f

Attributes

reg_key
6b15523b39e3dae4db6cae2a109d2d5f
splitter
|'|'|

Signatures

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

Processes:

svhost.exe

pid process

1028 svhost.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

1500 netsh.exe

pid	process
1028	svhost.exe

pid	process
1500	netsh.exe

Drops startup file 2 IoCs

Processes:

svhost.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6b15523b39e3dae4db6cae2a109d2d5f.exe	svhost.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\6b15523b39e3dae4db6cae2a109d2d5f.exe	svhost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

svhost.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-4063495947-34355257-727531523-1000\Software\Microsoft\Windows\CurrentVersion\Run\6b15523b39e3dae4db6cae2a109d2d5f = "\"C:\\Windows\\svhost.exe\" .."	svhost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\6b15523b39e3dae4db6cae2a109d2d5f = "\"C:\\Windows\\svhost.exe\" .."	svhost.exe

Drops file in Windows directory 3 IoCs

Processes:

a2b7067c9ed51dcf8eccb251da3bae89.exesvhost.exe

description	ioc	process
File opened for modification	C:\Windows\svhost.exe	a2b7067c9ed51dcf8eccb251da3bae89.exe
File opened for modification	C:\Windows\svhost.exe	svhost.exe
File created	C:\Windows\svhost.exe	a2b7067c9ed51dcf8eccb251da3bae89.exe

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

System Information Discovery
T1082
Kills process with taskkill 1 IoCs
evasion

Processes:

taskkill.exe

pid process

1736 taskkill.exe
Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

svhost.exe

pid process

1028 svhost.exe

pid	process
1736	taskkill.exe

pid	process
1028	svhost.exe

Suspicious use of AdjustPrivilegeToken 20 IoCs

Processes:

svhost.exetaskkill.exe

description	pid	process
Token: SeDebugPrivilege	1028	svhost.exe
Token: SeDebugPrivilege	1736	taskkill.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe
Token: 33	1028	svhost.exe
Token: SeIncBasePriorityPrivilege	1028	svhost.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

a2b7067c9ed51dcf8eccb251da3bae89.exesvhost.exe

description	pid	process	target process
PID 1672 wrote to memory of 1028	1672	a2b7067c9ed51dcf8eccb251da3bae89.exe	svhost.exe
PID 1672 wrote to memory of 1028	1672	a2b7067c9ed51dcf8eccb251da3bae89.exe	svhost.exe
PID 1672 wrote to memory of 1028	1672	a2b7067c9ed51dcf8eccb251da3bae89.exe	svhost.exe
PID 1672 wrote to memory of 1028	1672	a2b7067c9ed51dcf8eccb251da3bae89.exe	svhost.exe
PID 1028 wrote to memory of 1500	1028	svhost.exe	netsh.exe
PID 1028 wrote to memory of 1500	1028	svhost.exe	netsh.exe
PID 1028 wrote to memory of 1500	1028	svhost.exe	netsh.exe
PID 1028 wrote to memory of 1500	1028	svhost.exe	netsh.exe
PID 1028 wrote to memory of 1736	1028	svhost.exe	taskkill.exe
PID 1028 wrote to memory of 1736	1028	svhost.exe	taskkill.exe
PID 1028 wrote to memory of 1736	1028	svhost.exe	taskkill.exe
PID 1028 wrote to memory of 1736	1028	svhost.exe	taskkill.exe

C:\Users\Admin\AppData\Local\Temp\a2b7067c9ed51dcf8eccb251da3bae89.exe
"C:\Users\Admin\AppData\Local\Temp\a2b7067c9ed51dcf8eccb251da3bae89.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1672

C:\Windows\svhost.exe
"C:\Windows\svhost.exe"
2⤵
- Executes dropped EXE
- Drops startup file
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1028

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Windows\svhost.exe" "svhost.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:1500

C:\Windows\SysWOW64\taskkill.exe
taskkill /F /IM explorer.exe
3⤵
- Kills process with taskkill
- Suspicious use of AdjustPrivilegeToken
PID:1736

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:\Windows\svhost.exe
Filesize
37KB

MD5
a2b7067c9ed51dcf8eccb251da3bae89

SHA1
72dded4f4c1474804ab9508176a5587d71529d4b

SHA256
d3895a176b088ccea8de7ff50cabe73195a0a56bf4d32482dbc47bdcef733dc2

SHA512
609412d6e4147bf87cc8481c7fec9b9c39c540042879cbabc916b007942df21fcc0ed05f0cefe9e01b839ee3c9279368d4de9ccb19e1a7fe37a6bc3e82395d74

Download Submit
C:\Windows\svhost.exe
Filesize
37KB

MD5
a2b7067c9ed51dcf8eccb251da3bae89

SHA1
72dded4f4c1474804ab9508176a5587d71529d4b

SHA256
d3895a176b088ccea8de7ff50cabe73195a0a56bf4d32482dbc47bdcef733dc2

SHA512
609412d6e4147bf87cc8481c7fec9b9c39c540042879cbabc916b007942df21fcc0ed05f0cefe9e01b839ee3c9279368d4de9ccb19e1a7fe37a6bc3e82395d74

Download Submit
memory/1028-56-0x0000000000000000-mapping.dmp

Download
memory/1028-61-0x0000000074170000-0x000000007471B000-memory.dmp

Filesize
5.7MB

Download
memory/1028-65-0x0000000074170000-0x000000007471B000-memory.dmp

Filesize
5.7MB

Download
memory/1500-62-0x0000000000000000-mapping.dmp

Download
memory/1672-54-0x0000000075111000-0x0000000075113000-memory.dmp

Filesize
8KB

Download
memory/1672-55-0x0000000074170000-0x000000007471B000-memory.dmp

Filesize
5.7MB

Download
memory/1672-60-0x0000000074170000-0x000000007471B000-memory.dmp

Filesize
5.7MB

Download
memory/1736-63-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads