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| File name: | akrien.exe |
| Full analysis: | https://app.any.run/tasks/96eaf693-3520-490e-b1ae-d2730e5fb109 |
| Verdict: | Malicious activity |
| Threats: | njRAT is a remote access trojan. It is one of the most widely accessible RATs on the market that features an abundance of educational information. Interested attackers can even find tutorials on YouTube. This allows it to become one of the most popular RATs in the world. |
| Analysis date: | June 27, 2022, 11:08:49 |
| OS: | Windows 7 Professional Service Pack 1 (build: 7601, 32 bit) |
| Tags: | |
| Indicators: | |
| MIME: | application/x-dosexec |
| File info: | PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows |
| MD5: | 3AE6C1F2B841F03ED2A85E00E16A7760 |
| SHA1: | 89911DD9DC0DCC074DCB7BFBC8F012247D40A108 |
| SHA256: | 58354F61C0261C83E6CE2CB464467B2811F7764566A74F93E7FCD36070E442D1 |
| SSDEEP: | 384:/MmIiuzjtD+P3V+y0bpcNAtXHd+smYdbrAF+rMRTyN/0L+EcoinblneHQM3epzXd:07mV10bpcNAtN+NYxrM+rMRa8NuOat |
MALICIOUS
Drops executable file immediately after starts
- akrien.exe (PID: 2844)
- svchost.exe (PID: 2808)
Writes to a start menu file
- svchost.exe (PID: 2808)
Changes the autorun value in the registry
- svchost.exe (PID: 2808)
NJRAT was detected
- svchost.exe (PID: 2808)
Connects to CnC server
- svchost.exe (PID: 2808)
SUSPICIOUS
Creates executable files which already exist in Windows
- akrien.exe (PID: 2844)
Drops a file with a compile date too recent
- akrien.exe (PID: 2844)
- svchost.exe (PID: 2808)
Creates files in the program directory
- akrien.exe (PID: 2844)
Starts itself from another location
- akrien.exe (PID: 2844)
Checks supported languages
- akrien.exe (PID: 2844)
- svchost.exe (PID: 2808)
Executable content was dropped or overwritten
- akrien.exe (PID: 2844)
- svchost.exe (PID: 2808)
Reads the computer name
- akrien.exe (PID: 2844)
- svchost.exe (PID: 2808)
Uses NETSH.EXE for network configuration
- svchost.exe (PID: 2808)
Creates files in the user directory
- svchost.exe (PID: 2808)
Reads Environment values
- netsh.exe (PID: 3260)
- svchost.exe (PID: 2808)
INFO
Checks supported languages
- netsh.exe (PID: 3260)
Reads the computer name
- netsh.exe (PID: 3260)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (56.7) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (21.3) |
| .scr | | | Windows screen saver (10.1) |
| .dll | | | Win32 Dynamic Link Library (generic) (5) |
| .exe | | | Win32 Executable (generic) (3.4) |
EXIF
EXE
| Subsystem: | Windows GUI |
|---|---|
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0xabbe |
| UninitializedDataSize: | - |
| InitializedDataSize: | 1536 |
| CodeSize: | 35840 |
| LinkerVersion: | 8 |
| PEType: | PE32 |
| TimeStamp: | 2022:06:27 13:07:06+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 27-Jun-2022 11:07:06 |
DOS Header
| Magic number: | MZ |
|---|---|
| Bytes on last page of file: | 0x0090 |
| Pages in file: | 0x0003 |
| Relocations: | 0x0000 |
| Size of header: | 0x0004 |
| Min extra paragraphs: | 0x0000 |
| Max extra paragraphs: | 0xFFFF |
| Initial SS value: | 0x0000 |
| Initial SP value: | 0x00B8 |
| Checksum: | 0x0000 |
| Initial IP value: | 0x0000 |
| Initial CS value: | 0x0000 |
| Overlay number: | 0x0000 |
| OEM identifier: | 0x0000 |
| OEM information: | 0x0000 |
| Address of NE header: | 0x00000080 |
PE Headers
| Signature: | PE |
|---|---|
| Machine: | IMAGE_FILE_MACHINE_I386 |
| Number of sections: | 3 |
| Time date stamp: | 27-Jun-2022 11:07:06 |
| Pointer to Symbol Table: | 0x00000000 |
| Number of symbols: | 0 |
| Size of Optional Header: | 0x00E0 |
| Characteristics: |
|
Sections
Name | Virtual Address | Virtual Size | Raw Size | Charateristics | Entropy |
|---|---|---|---|---|---|
.text | 0x00002000 | 0x00008BC4 | 0x00008C00 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.60535 |
.rsrc | 0x0000C000 | 0x00000240 | 0x00000400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 4.96877 |
.reloc | 0x0000E000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0815394 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 4.96801 | 487 | Latin 1 / Western European | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
37
Monitored processes
3
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 2844 | "C:\Users\admin\AppData\Local\Temp\akrien.exe" | C:\Users\admin\AppData\Local\Temp\akrien.exe | Explorer.EXE | |
User: admin Integrity Level: MEDIUM Exit code: 0 | ||||
| 2808 | "C:\ProgramData\svchost.exe" | C:\ProgramData\svchost.exe | akrien.exe | |
User: admin Integrity Level: MEDIUM | ||||
| 3260 | netsh firewall add allowedprogram "C:\ProgramData\svchost.exe" "svchost.exe" ENABLE | C:\Windows\system32\netsh.exe | — | svchost.exe |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Network Command Shell Exit code: 1 Version: 6.1.7600.16385 (win7_rtm.090713-1255) | ||||
Total events
1 276
Read events
1 157
Write events
0
Delete events
0
Modification events
Executable files
2
Suspicious files
0
Text files
0
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2844 | akrien.exe | C:\ProgramData\svchost.exe | executable | |
MD5:3AE6C1F2B841F03ED2A85E00E16A7760 | SHA256:58354F61C0261C83E6CE2CB464467B2811F7764566A74F93E7FCD36070E442D1 | |||
| 2808 | svchost.exe | C:\Users\admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\7713ee41d27ca604f3e90348df89247e.exe | executable | |
MD5:3AE6C1F2B841F03ED2A85E00E16A7760 | SHA256:58354F61C0261C83E6CE2CB464467B2811F7764566A74F93E7FCD36070E442D1 | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
2
DNS requests
1
Threats
0
HTTP requests
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
2808 | svchost.exe | 3.68.171.119:11513 | 6.tcp.eu.ngrok.io | — | US | malicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
6.tcp.eu.ngrok.io |
| malicious |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
2808 | svchost.exe | A Network Trojan was detected | ET TROJAN Generic njRAT/Bladabindi CnC Activity (ll) |
2808 | svchost.exe | A Network Trojan was detected | ET TROJAN njrat ver 0.7d Malware CnC Callback (Remote Desktop) |
2 ETPRO signatures available at the full report