njrat | d29c210fb38115e7dbab2db78822979b2227a2cdf9809be230bb1af40125b2e3

Analysis

max time kernel
138s
max time network
145s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
09/03/2023, 05:48

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General

Target

dcbb32405ee05f65b14eeeb946736623.exe
Size

37KB
MD5

dcbb32405ee05f65b14eeeb946736623
SHA1

cc73493e9d5cd12d9e1c96e22c5581a293bf83bf
SHA256

d29c210fb38115e7dbab2db78822979b2227a2cdf9809be230bb1af40125b2e3
SHA512

d1c4d752a2d3e486eb1a11090cc11e9f54b457c535d51514ef8fbcfbc914d421c6811b47741669e5cba5dff02fc3c4cd2e6209d91732e3087008a75bf4cf4dad
SSDEEP

384:b6bZpj6icjri5Z7JAyk/A4wfL3Ze6Yd2rAF+rMRTyN/0L+EcoinblneHQM3epzXq:ubXHJ7k/A4wzZrYYrM+rMRa8NuhOt

Score

10^/10

njrat welmoroff evasion trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

welmoroff

0.tcp.eu.ngrok.io:11993

Mutex

619a2000a3e32d8aaaca3d14ba2e0945

Attributes

reg_key
619a2000a3e32d8aaaca3d14ba2e0945
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
616	netsh.exe

Executes dropped EXE 1 IoCs

pid	Process
1980	Nursultan.exe

Loads dropped DLL 1 IoCs

pid	Process
2044	dcbb32405ee05f65b14eeeb946736623.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). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe
Token: 33	1980	Nursultan.exe
Token: SeIncBasePriorityPrivilege	1980	Nursultan.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2044 wrote to memory of 1980	2044	dcbb32405ee05f65b14eeeb946736623.exe	28
PID 2044 wrote to memory of 1980	2044	dcbb32405ee05f65b14eeeb946736623.exe	28
PID 2044 wrote to memory of 1980	2044	dcbb32405ee05f65b14eeeb946736623.exe	28
PID 2044 wrote to memory of 1980	2044	dcbb32405ee05f65b14eeeb946736623.exe	28
PID 1980 wrote to memory of 616	1980	Nursultan.exe	29
PID 1980 wrote to memory of 616	1980	Nursultan.exe	29
PID 1980 wrote to memory of 616	1980	Nursultan.exe	29
PID 1980 wrote to memory of 616	1980	Nursultan.exe	29

C:\Users\Admin\AppData\Local\Temp\dcbb32405ee05f65b14eeeb946736623.exe
"C:\Users\Admin\AppData\Local\Temp\dcbb32405ee05f65b14eeeb946736623.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2044
- C:\Users\Admin\AppData\Roaming\Nursultan.exe
  "C:\Users\Admin\AppData\Roaming\Nursultan.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1980
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewall add allowedprogram "C:\Users\Admin\AppData\Roaming\Nursultan.exe" "Nursultan.exe" ENABLE
    3⤵
    - Modifies Windows Firewall
    PID:616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

Web Service

T1102

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Nursultan.exe

Filesize
37KB

MD5
dcbb32405ee05f65b14eeeb946736623

SHA1
cc73493e9d5cd12d9e1c96e22c5581a293bf83bf

SHA256
d29c210fb38115e7dbab2db78822979b2227a2cdf9809be230bb1af40125b2e3

SHA512
d1c4d752a2d3e486eb1a11090cc11e9f54b457c535d51514ef8fbcfbc914d421c6811b47741669e5cba5dff02fc3c4cd2e6209d91732e3087008a75bf4cf4dad

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

Filesize
37KB

MD5
dcbb32405ee05f65b14eeeb946736623

SHA1
cc73493e9d5cd12d9e1c96e22c5581a293bf83bf

SHA256
d29c210fb38115e7dbab2db78822979b2227a2cdf9809be230bb1af40125b2e3

SHA512
d1c4d752a2d3e486eb1a11090cc11e9f54b457c535d51514ef8fbcfbc914d421c6811b47741669e5cba5dff02fc3c4cd2e6209d91732e3087008a75bf4cf4dad

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

Filesize
37KB

MD5
dcbb32405ee05f65b14eeeb946736623

SHA1
cc73493e9d5cd12d9e1c96e22c5581a293bf83bf

SHA256
d29c210fb38115e7dbab2db78822979b2227a2cdf9809be230bb1af40125b2e3

SHA512
d1c4d752a2d3e486eb1a11090cc11e9f54b457c535d51514ef8fbcfbc914d421c6811b47741669e5cba5dff02fc3c4cd2e6209d91732e3087008a75bf4cf4dad

Download Submit
memory/1980-62-0x0000000002050000-0x0000000002090000-memory.dmp

Filesize
256KB

Download
memory/1980-63-0x0000000002050000-0x0000000002090000-memory.dmp

Filesize
256KB

Download
memory/2044-54-0x0000000000C50000-0x0000000000C90000-memory.dmp

Filesize
256KB

Download