njrat | dc5135aa461e90bcbfb73407acd326f348505b778d9cb7c26eb1c165c0f10256

Analysis

max time kernel
150s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220721-en
resource tags

arch:x64arch:x86image:win10v2004-20220721-enlocale:en-usos:windows10-2004-x64system
submitted
31-07-2022 16:46

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General

Target

DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe
Size

37KB
MD5

b25b97950fa6a2787ded68ff502f83ed
SHA1

dff29eb3973f2eff1c2eb9b0194322c4dce67d7b
SHA256

dc5135aa461e90bcbfb73407acd326f348505b778d9cb7c26eb1c165c0f10256
SHA512

949a9474257857080373e413cf32f26aece73d2991f34d87da6521d4b8068299c3c6e3f65770f7557cb2ff91013314114549996a802386558daff115e8e60f1a

Score

10^/10

njrat hacked evasion trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

2.tcp.eu.ngrok.io:17696

Mutex

484eea14a1a847f4be40553ddc98f05f

Attributes

reg_key
484eea14a1a847f4be40553ddc98f05f
splitter
|'|'|

Signatures

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

Processes:

chel.exe

pid process

2740 chel.exe
Modifies Windows Firewall 1 TTPs 1 IoCs
evasion

Modify Existing Service
T1031

Processes:

netsh.exe

pid process

3968 netsh.exe

pid	process
2740	chel.exe

pid	process
3968	netsh.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 35 IoCs

Processes:

chel.exe

description	pid	process
Token: SeDebugPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe
Token: 33	2740	chel.exe
Token: SeIncBasePriorityPrivilege	2740	chel.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exechel.exe

description	pid	process	target process
PID 1440 wrote to memory of 2740	1440	DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe	chel.exe
PID 1440 wrote to memory of 2740	1440	DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe	chel.exe
PID 1440 wrote to memory of 2740	1440	DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe	chel.exe
PID 2740 wrote to memory of 3968	2740	chel.exe	netsh.exe
PID 2740 wrote to memory of 3968	2740	chel.exe	netsh.exe
PID 2740 wrote to memory of 3968	2740	chel.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe
"C:\Users\Admin\AppData\Local\Temp\DC5135AA461E90BCBFB73407ACD326F348505B778D9CB.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1440

C:\Users\Admin\AppData\Roaming\chel.exe
"C:\Users\Admin\AppData\Roaming\chel.exe"
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740

C:\Windows\SysWOW64\netsh.exe
netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\chel.exe" "chel.exe" ENABLE
3⤵
- Modifies Windows Firewall
PID:3968

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\chel.exe
Filesize
37KB

MD5
b25b97950fa6a2787ded68ff502f83ed

SHA1
dff29eb3973f2eff1c2eb9b0194322c4dce67d7b

SHA256
dc5135aa461e90bcbfb73407acd326f348505b778d9cb7c26eb1c165c0f10256

SHA512
949a9474257857080373e413cf32f26aece73d2991f34d87da6521d4b8068299c3c6e3f65770f7557cb2ff91013314114549996a802386558daff115e8e60f1a

Download Submit
C:\Users\Admin\AppData\Roaming\chel.exe
Filesize
37KB

MD5
b25b97950fa6a2787ded68ff502f83ed

SHA1
dff29eb3973f2eff1c2eb9b0194322c4dce67d7b

SHA256
dc5135aa461e90bcbfb73407acd326f348505b778d9cb7c26eb1c165c0f10256

SHA512
949a9474257857080373e413cf32f26aece73d2991f34d87da6521d4b8068299c3c6e3f65770f7557cb2ff91013314114549996a802386558daff115e8e60f1a

Download Submit
memory/1440-130-0x0000000075240000-0x00000000757F1000-memory.dmp

Filesize
5.7MB

Download
memory/1440-134-0x0000000075240000-0x00000000757F1000-memory.dmp

Filesize
5.7MB

Download
memory/2740-131-0x0000000000000000-mapping.dmp

Download
memory/2740-135-0x0000000075240000-0x00000000757F1000-memory.dmp

Filesize
5.7MB

Download
memory/2740-137-0x0000000075240000-0x00000000757F1000-memory.dmp

Filesize
5.7MB

Download
memory/3968-136-0x0000000000000000-mapping.dmp

Download