njrat | c7a2ec6110cfa5ae4b53b2b854013459bcdba8fff179bf95e5b707a2e4b98427

General

Target

Server.exe
Size

37KB
MD5

952ea2d47e241b1a82eeb265457c5644
SHA1

16048d925d1722c3a97bbbd0ab0dc05f169c1af7
SHA256

c7a2ec6110cfa5ae4b53b2b854013459bcdba8fff179bf95e5b707a2e4b98427
SHA512

9001eaa366acab6c0574912215d18d73ee944482a469243a0e40dc340a6523b4ce58ea0ed18f232eac8813477f5918c649353da0abd32c57fc3735721be407ad
SSDEEP

384:Io66MizdTjnBhFbJ8ycP3h3hNwKaB0rAF+rMRTyN/0L+EcoinblneHQM3epzXaNg:36QTlLJfcP3hH9amrM+rMRa8NuQWt

Score

10^/10

njrat hacked discovery trojan

Malware Config

Extracted

Family

njrat

Version

im523

Botnet

HacKed

C2

cnet-contracting.gl.at.ply.gg:10206

Mutex

3eec6dad022c4e8fee29e905fa2de108

Attributes

reg_key
3eec6dad022c4e8fee29e905fa2de108
splitter
|'|'|

Signatures

Njrat family
njrat
njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Server.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2744	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2744	AcroRd32.exe
2744	AcroRd32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 1764 wrote to memory of 2944	1764	Server.exe	31
PID 1764 wrote to memory of 2944	1764	Server.exe	31
PID 1764 wrote to memory of 2944	1764	Server.exe	31
PID 1764 wrote to memory of 2944	1764	Server.exe	31
PID 1764 wrote to memory of 2944	1764	Server.exe	31
PID 1764 wrote to memory of 2944	1764	Server.exe	31
PID 1764 wrote to memory of 2944	1764	Server.exe	31
PID 2944 wrote to memory of 2744	2944	rundll32.exe	32
PID 2944 wrote to memory of 2744	2944	rundll32.exe	32
PID 2944 wrote to memory of 2744	2944	rundll32.exe	32
PID 2944 wrote to memory of 2744	2944	rundll32.exe	32

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1764
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Local\Temp\Celex
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:2944
- - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
    "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Local\Temp\Celex"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: GetForegroundWindowSpam
    - Suspicious use of SetWindowsHookEx
    PID:2744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Celex

Filesize
37KB

MD5
952ea2d47e241b1a82eeb265457c5644

SHA1
16048d925d1722c3a97bbbd0ab0dc05f169c1af7

SHA256
c7a2ec6110cfa5ae4b53b2b854013459bcdba8fff179bf95e5b707a2e4b98427

SHA512
9001eaa366acab6c0574912215d18d73ee944482a469243a0e40dc340a6523b4ce58ea0ed18f232eac8813477f5918c649353da0abd32c57fc3735721be407ad

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
a30df1506369ba6e85dc91149a1d5fce

SHA1
2dcea877d948e39afc4ad7ba763b7e76acce49e7

SHA256
91e2f729add2eeaf90315d2e962b4d3b60f9c326ff0b3e581df809bee38f7793

SHA512
51bcc4cff77b372ec632c261678aba59c7a4f2d4a9c4d5c153dff1e882256009cf2054ee74266fdc1388ef4e7a1b688367d7feadbeb9b60b20088e6043f2dd17

Download Submit
memory/1764-0-0x0000000074571000-0x0000000074572000-memory.dmp

Filesize
4KB

Download
memory/1764-1-0x0000000074570000-0x0000000074B1B000-memory.dmp

Filesize
5.7MB

Download
memory/1764-2-0x0000000074570000-0x0000000074B1B000-memory.dmp

Filesize
5.7MB

Download
memory/1764-5-0x0000000074570000-0x0000000074B1B000-memory.dmp

Filesize
5.7MB

Download

Analysis

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