njrat | 4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a

General

Target

4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a.exe
Size

23KB
MD5

bc3b47fecbf0e80808958e62fbc59a13
SHA1

9b23b03fc5190fd5b1af5b8f9d5d55f4450f7b13
SHA256

4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a
SHA512

d046409001437f142f592634078ee7dc7414eef3dba539d11434fea0be3c50881809244426ac6f965d88f2f850f257dfb109e42ec0095947eb6559bc79c1e60c
SSDEEP

384:7QeCo2zmZbQHkJeCdUwBvQ61gjuQBnB9mRvR6JZlbw8hqIusZzZhV:85yBVd7Rpcnus

Score

10^/10

njrat hacked persistence trojan

Malware Config

Extracted

Family

njrat

Version

0.7d

Botnet

HacKed

C2

xtracker81.no-ip.org:1990

Mutex

8b74ececc3fc6b7e3b7d1ea01fe47d6c

Attributes

reg_key
8b74ececc3fc6b7e3b7d1ea01fe47d6c
splitter
|'|'|

Signatures

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

Executes dropped EXE 1 IoCs

pid	Process
4144	server.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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8b74ececc3fc6b7e3b7d1ea01fe47d6c.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\8b74ececc3fc6b7e3b7d1ea01fe47d6c.exe	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-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8b74ececc3fc6b7e3b7d1ea01fe47d6c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exeᄑᄑᄑᄑᄑᄑᄑᄑ"	server.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\8b74ececc3fc6b7e3b7d1ea01fe47d6c = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\server.exeᄑᄑᄑᄑᄑᄑᄑᄑ"	server.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 33 IoCs

description	pid	Process
Token: SeDebugPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe
Token: 33	4144	server.exe
Token: SeIncBasePriorityPrivilege	4144	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4832 wrote to memory of 4144	4832	4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a.exe	81
PID 4832 wrote to memory of 4144	4832	4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a.exe	81
PID 4832 wrote to memory of 4144	4832	4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a.exe	81
PID 4144 wrote to memory of 4124	4144	server.exe	82
PID 4144 wrote to memory of 4124	4144	server.exe	82
PID 4144 wrote to memory of 4124	4144	server.exe	82

C:\Users\Admin\AppData\Local\Temp\4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a.exe
"C:\Users\Admin\AppData\Local\Temp\4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4832
- C:\Users\Admin\AppData\Local\Temp\server.exe
  "C:\Users\Admin\AppData\Local\Temp\server.exe"
  2⤵
  - Executes dropped EXE
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4144
- - C:\Windows\SysWOW64\netsh.exe
    netsh firewaᅬᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑᄑC:\Users\Admin\AppData\Local\Temp\server.exeᄑᄑᄑᄑᄑᄑᄑᄑserver.exeᄑᄑᄑᄑᄑᄑᄑᄑ
    3⤵
    PID:4124

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
23KB

MD5
bc3b47fecbf0e80808958e62fbc59a13

SHA1
9b23b03fc5190fd5b1af5b8f9d5d55f4450f7b13

SHA256
4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a

SHA512
d046409001437f142f592634078ee7dc7414eef3dba539d11434fea0be3c50881809244426ac6f965d88f2f850f257dfb109e42ec0095947eb6559bc79c1e60c

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

Filesize
23KB

MD5
bc3b47fecbf0e80808958e62fbc59a13

SHA1
9b23b03fc5190fd5b1af5b8f9d5d55f4450f7b13

SHA256
4f11fe373c27b39ff2eba9f951eec263f10a6d16fce7eefa5d979180859d0c3a

SHA512
d046409001437f142f592634078ee7dc7414eef3dba539d11434fea0be3c50881809244426ac6f965d88f2f850f257dfb109e42ec0095947eb6559bc79c1e60c

Download Submit
memory/4144-137-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/4144-139-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/4832-132-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download
memory/4832-136-0x0000000074A20000-0x0000000074FD1000-memory.dmp

Filesize
5.7MB

Download

Analysis

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