njrat | 3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498

General

Target

3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe
Size

93KB
MD5

59bc430c7e94eda88ba59fc1fa3d2c0c
SHA1

7af6f4bd5d7c38ad87432785344f3016e873b151
SHA256

3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498
SHA512

578f3b0c79a83bf85ed945dd6ff8e3f6469ce40bfbf7058849f6901a64e12719c73a98fedb3d877ac9b8e7a4fb1aa72186431f7ad933c1e705d6298d33ff2b07
SSDEEP

768:8Y3Jwmm6h1ychQVHwUM7k+rhHX9/NhUQBi0yXxrjEtCdnl2pi1Rz4Rk39sGdpTgM:Nw76rCHwB4+r9ptcjEwzGi1dDtDTgS

Score

10^/10

njrat evasion trojan

Malware Config

Signatures

njRAT/Bladabindi
Widely used RAT written in .NET.
trojan njrat
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

2992 netsh.exe

pid	process
2992	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:

3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe

Drops startup file 4 IoCs

Processes:

server.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bd45e682ad8a06dcb9168f1be41d3129Epic Games.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\bd45e682ad8a06dcb9168f1be41d3129Epic Games.exe	server.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Epic Games.exe	server.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Epic Games.exe	server.exe

Executes dropped EXE 1 IoCs

Processes:

server.exe

pid process

3980 server.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service
T1102

Processes:

flow ioc

20 7.tcp.eu.ngrok.io
79 7.tcp.eu.ngrok.io
106 7.tcp.eu.ngrok.io

pid	process
3980	server.exe

flow	ioc
20	7.tcp.eu.ngrok.io
79	7.tcp.eu.ngrok.io
106	7.tcp.eu.ngrok.io

Drops autorun.inf file 1 TTPs 4 IoCs

Malware can abuse Windows Autorun to spread further via attached volumes.

Replication Through Removable Media

T1091

Processes:

server.exe

description	ioc	process
File opened for modification	C:\autorun.inf	server.exe
File created	F:\autorun.inf	server.exe
File opened for modification	F:\autorun.inf	server.exe
File created	C:\autorun.inf	server.exe

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

System Information Discovery
T1082
Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exeserver.exe

pid process

4156 3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe
3980 server.exe

pid	process
4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe
3980	server.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

Processes:

server.exe

description	pid	process
Token: SeDebugPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe
Token: 33	3980	server.exe
Token: SeIncBasePriorityPrivilege	3980	server.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exeserver.exe

description	pid	process	target process
PID 4156 wrote to memory of 3980	4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe	server.exe
PID 4156 wrote to memory of 3980	4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe	server.exe
PID 4156 wrote to memory of 3980	4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe	server.exe
PID 3980 wrote to memory of 2992	3980	server.exe	netsh.exe
PID 3980 wrote to memory of 2992	3980	server.exe	netsh.exe
PID 3980 wrote to memory of 2992	3980	server.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe
"C:\Users\Admin\AppData\Local\Temp\3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:4156

C:\Users\Admin\AppData\Local\Temp\server.exe
"C:\Users\Admin\AppData\Local\Temp\server.exe"
2⤵
- Drops startup file
- Executes dropped EXE
- Drops autorun.inf file
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3980

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:2992

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3680 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:3180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Replication Through Removable Media

1

T1091

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

1

T1562.004

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Replication Through Removable Media

1

T1091

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
93KB

MD5
59bc430c7e94eda88ba59fc1fa3d2c0c

SHA1
7af6f4bd5d7c38ad87432785344f3016e873b151

SHA256
3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498

SHA512
578f3b0c79a83bf85ed945dd6ff8e3f6469ce40bfbf7058849f6901a64e12719c73a98fedb3d877ac9b8e7a4fb1aa72186431f7ad933c1e705d6298d33ff2b07

Download Submit
C:\Users\Admin\AppData\Roaming\app

Filesize
5B

MD5
7eb860abfe2281298575b5216ef42bc6

SHA1
d4dfd7ac22dcd07da34306c40b4e5367a969cda5

SHA256
83d46461bf45f00cb4fc5df9679b2bd82dbf54eeb022ca1711eefb4b2e7b7689

SHA512
427bfc41f0514ee10d400eea38f22f6fac6f9d5ecd84ad7adb1161ff9355e47c04ff411e172fafcd23c137ad1528ed2f2cb95d247613ae5550c089633f18994d

Download Submit
memory/3980-13-0x0000000075480000-0x0000000075A31000-memory.dmp

Filesize
5.7MB

Download
memory/3980-14-0x0000000000A30000-0x0000000000A40000-memory.dmp

Filesize
64KB

Download
memory/3980-16-0x0000000075480000-0x0000000075A31000-memory.dmp

Filesize
5.7MB

Download
memory/3980-29-0x0000000075480000-0x0000000075A31000-memory.dmp

Filesize
5.7MB

Download
memory/4156-0-0x0000000075480000-0x0000000075A31000-memory.dmp

Filesize
5.7MB

Download
memory/4156-1-0x0000000075480000-0x0000000075A31000-memory.dmp

Filesize
5.7MB

Download
memory/4156-2-0x0000000000CB0000-0x0000000000CC0000-memory.dmp

Filesize
64KB

Download
memory/4156-15-0x0000000075480000-0x0000000075A31000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads