njrat | a01ef3fdd7c3df2e845dca28c37e9244cb1823c655da892ff5d5dacb9db70afd

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20230703-en
resource tags

arch:x64arch:x86image:win10v2004-20230703-enlocale:en-usos:windows10-2004-x64system
submitted
16/07/2023, 19:46

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General

Target

1dfe93c432a71787bec625e9f37aea5c.exe
Size

37KB
MD5

1dfe93c432a71787bec625e9f37aea5c
SHA1

c733d9b06b59e9cd883787998d36cb890a601ef2
SHA256

a01ef3fdd7c3df2e845dca28c37e9244cb1823c655da892ff5d5dacb9db70afd
SHA512

539b983f1ff6b954e1015cd11190d9d6562e23b3c88fd1379a7cec008479a8d8fba9606641d1c11807ee44986bf1f11562f770a448d76d7d0c4ed5bbc3bd0998
SSDEEP

384:tdKvEiTbHvpWNcZ0y8f7CTvvrILkCwE3rAF+rMRTyN/0L+EcoinblneHQM3epzX9:DKXTZ38f7CTv8FwKrM+rMRa8NuLGKt

Score

10^/10

njrat hacked evasion persistence trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

0.tcp.eu.ngrok.io:16261

Mutex

0dfab35b0ccfd955e7d94fa1f5dce520

Attributes

reg_key
0dfab35b0ccfd955e7d94fa1f5dce520
splitter
|'|'|

Signatures

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

Modifies Windows Firewall 1 TTPs 1 IoCs

evasion

Modify Existing Service

T1031

pid	Process
4588	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4176143399-3250363947-192774652-1000\Control Panel\International\Geo\Nation	1dfe93c432a71787bec625e9f37aea5c.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0dfab35b0ccfd955e7d94fa1f5dce520.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\0dfab35b0ccfd955e7d94fa1f5dce520.exe	server.exe

Executes dropped EXE 1 IoCs

pid	Process
3212	server.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-1-5-21-4176143399-3250363947-192774652-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\0dfab35b0ccfd955e7d94fa1f5dce520 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\0dfab35b0ccfd955e7d94fa1f5dce520 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exe\" .."	server.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe
3212	server.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3212	server.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe
Token: 33	3212	server.exe
Token: SeIncBasePriorityPrivilege	3212	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4572 wrote to memory of 3212	4572	1dfe93c432a71787bec625e9f37aea5c.exe	92
PID 4572 wrote to memory of 3212	4572	1dfe93c432a71787bec625e9f37aea5c.exe	92
PID 4572 wrote to memory of 3212	4572	1dfe93c432a71787bec625e9f37aea5c.exe	92
PID 3212 wrote to memory of 4588	3212	server.exe	95
PID 3212 wrote to memory of 4588	3212	server.exe	95
PID 3212 wrote to memory of 4588	3212	server.exe	95

C:\Users\Admin\AppData\Local\Temp\1dfe93c432a71787bec625e9f37aea5c.exe
"C:\Users\Admin\AppData\Local\Temp\1dfe93c432a71787bec625e9f37aea5c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4572
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3212
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Local\Temp\server.exe" "server.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:4588

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
37KB

MD5
1dfe93c432a71787bec625e9f37aea5c

SHA1
c733d9b06b59e9cd883787998d36cb890a601ef2

SHA256
a01ef3fdd7c3df2e845dca28c37e9244cb1823c655da892ff5d5dacb9db70afd

SHA512
539b983f1ff6b954e1015cd11190d9d6562e23b3c88fd1379a7cec008479a8d8fba9606641d1c11807ee44986bf1f11562f770a448d76d7d0c4ed5bbc3bd0998

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
37KB

MD5
1dfe93c432a71787bec625e9f37aea5c

SHA1
c733d9b06b59e9cd883787998d36cb890a601ef2

SHA256
a01ef3fdd7c3df2e845dca28c37e9244cb1823c655da892ff5d5dacb9db70afd

SHA512
539b983f1ff6b954e1015cd11190d9d6562e23b3c88fd1379a7cec008479a8d8fba9606641d1c11807ee44986bf1f11562f770a448d76d7d0c4ed5bbc3bd0998

Download Submit
C:\Users\Admin\AppData\Local\Temp\server.exe

Filesize
37KB

MD5
1dfe93c432a71787bec625e9f37aea5c

SHA1
c733d9b06b59e9cd883787998d36cb890a601ef2

SHA256
a01ef3fdd7c3df2e845dca28c37e9244cb1823c655da892ff5d5dacb9db70afd

SHA512
539b983f1ff6b954e1015cd11190d9d6562e23b3c88fd1379a7cec008479a8d8fba9606641d1c11807ee44986bf1f11562f770a448d76d7d0c4ed5bbc3bd0998

Download Submit
memory/3212-149-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/3212-148-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3212-151-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3212-152-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/3212-153-0x0000000001090000-0x00000000010A0000-memory.dmp

Filesize
64KB

Download
memory/4572-136-0x0000000000E60000-0x0000000000E70000-memory.dmp

Filesize
64KB

Download
memory/4572-135-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4572-147-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4572-146-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download
memory/4572-134-0x00000000748E0000-0x0000000074E91000-memory.dmp

Filesize
5.7MB

Download