njrat | 3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498

Analysis

max time kernel
150s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 01:13

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General

Target
3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe
Size 93KB
Sample240428-blj5ascf77
SHA256 3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498
MD5 59bc430c7e94eda88ba59fc1fa3d2c0c
SHA1 7af6f4bd5d7c38ad87432785344f3016e873b151
SHA512 578f3b0c79a83bf85ed945dd6ff8e3f6469ce40bfbf7058849f6901a64e12719c73a98fedb3d877ac9b8e7a4fb1aa72186431f7ad933c1e705d6298d33ff2b07
SSDEEP 768:8Y3Jwmm6h1ychQVHwUM7k+rhHX9/NhUQBi0yXxrjEtCdnl2pi1Rz4Rk39sGdpTgM:Nw76rCHwB4+r9ptcjEwzGi1dDtDTgS
MD5 SHA1 SHA512 SSDEEP

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

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

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

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

pid	Process
3980	server.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

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

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

pid	Process
4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe
3980	server.exe

Suspicious use of AdjustPrivilegeToken 33 IoCs

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

description	pid	Process	procid_target
PID 4156 wrote to memory of 3980	4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe	89
PID 4156 wrote to memory of 3980	4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe	89
PID 4156 wrote to memory of 3980	4156	3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498.exe	89
PID 3980 wrote to memory of 2992	3980	server.exe	90
PID 3980 wrote to memory of 2992	3980	server.exe	90
PID 3980 wrote to memory of 2992	3980	server.exe	90

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

T1091

Execution

Persistence

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Replication Through Removable Media

T1091

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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server.exe

Path C:\Users\Admin\AppData\Local\Temp\server.exe
Size 93KB
SHA256 3477c51b4db8004874eeb950fced5e89d636b4ad123595ca403f8fca5c430498
MD5 59bc430c7e94eda88ba59fc1fa3d2c0c
SHA1 7af6f4bd5d7c38ad87432785344f3016e873b151
SHA512 578f3b0c79a83bf85ed945dd6ff8e3f6469ce40bfbf7058849f6901a64e12719c73a98fedb3d877ac9b8e7a4fb1aa72186431f7ad933c1e705d6298d33ff2b07
SSDEEP 768:8Y3Jwmm6h1ychQVHwUM7k+rhHX9/NhUQBi0yXxrjEtCdnl2pi1Rz4Rk39sGdpTgM:Nw76rCHwB4+r9ptcjEwzGi1dDtDTgS
MD5 SHA1 SHA512 SSDEEP

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app

Path C:\Users\Admin\AppData\Roaming\app
Size 5B
SHA256 83d46461bf45f00cb4fc5df9679b2bd82dbf54eeb022ca1711eefb4b2e7b7689
MD5 7eb860abfe2281298575b5216ef42bc6
SHA1 d4dfd7ac22dcd07da34306c40b4e5367a969cda5
SHA512 427bfc41f0514ee10d400eea38f22f6fac6f9d5ecd84ad7adb1161ff9355e47c04ff411e172fafcd23c137ad1528ed2f2cb95d247613ae5550c089633f18994d
MD5 SHA1 SHA512

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

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

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

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

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

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

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

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

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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