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| File name: | Jarv.exe |
| Full analysis: | https://app.any.run/tasks/31963f56-c7be-44a7-9be3-d1654d80230e |
| Verdict: | Malicious activity |
| Threats: | NanoCore is a Remote Access Trojan or RAT. This malware is highly customizable with plugins which allow attackers to tailor its functionality to their needs. Nanocore is created with the .NET framework and it’s available for purchase for just $25 from its “official” website. |
| Analysis date: | May 20, 2022, 16:32:42 |
| 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: | 6E11BDFAC14ECFEB41C12139DCD080F9 |
| SHA1: | 0DAAA7C0BCB5368F0B565FA926CA332CE4A02155 |
| SHA256: | 9C551FC227B20B361BCFBDFC1413D3F60ACD21D78F829280A2C11DFC94E9617E |
| SSDEEP: | 6144:QLV6Bta6dtJmakIM5lgCpVBVl30m8A2CSFixQfK:QLV6Btpmkcgqv3ftEFnfK |
MALICIOUS
Changes the autorun value in the registry
- Jarv.exe (PID: 2912)
NANOCORE was detected
- Jarv.exe (PID: 2912)
Drops executable file immediately after starts
- Jarv.exe (PID: 2912)
NANOCORE detected by memory dumps
- Jarv.exe (PID: 2912)
SUSPICIOUS
Checks supported languages
- Jarv.exe (PID: 2912)
- Jarv.exe (PID: 1644)
- Jarv.exe (PID: 3952)
- Jarv.exe (PID: 1016)
- Jarv.exe (PID: 2592)
- Jarv.exe (PID: 3352)
- Jarv.exe (PID: 2992)
- Jarv.exe (PID: 2896)
- Jarv.exe (PID: 3548)
- Jarv.exe (PID: 1292)
Creates files in the user directory
- Jarv.exe (PID: 2912)
Executable content was dropped or overwritten
- Jarv.exe (PID: 2912)
Drops a file with a compile date too recent
- Jarv.exe (PID: 2912)
Reads Environment values
- Jarv.exe (PID: 2912)
Reads the computer name
- Jarv.exe (PID: 2912)
- Jarv.exe (PID: 1644)
- Jarv.exe (PID: 2592)
- Jarv.exe (PID: 1016)
- Jarv.exe (PID: 2992)
- Jarv.exe (PID: 3352)
- Jarv.exe (PID: 3548)
- Jarv.exe (PID: 3952)
- Jarv.exe (PID: 2896)
INFO
Manual execution by user
- Jarv.exe (PID: 1644)
- Jarv.exe (PID: 3952)
- Jarv.exe (PID: 2592)
- Jarv.exe (PID: 1016)
- Jarv.exe (PID: 2992)
- Jarv.exe (PID: 3352)
- Jarv.exe (PID: 3548)
- Jarv.exe (PID: 2896)
- Jarv.exe (PID: 1292)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
Nanocore
(PID) Process(2912) Jarv.exe
BackupDnsServer8.8.4.4
PrimaryDnsServer8.8.8.8
UseCustomDnsServerTrue
GCThreshold10485760
MaxPacketSize10485760
BufferSize65535
WanTimeout8000
LanTimeout2500
MutexTimeout5000
KeepAliveTimeout30000
TimeoutInterval5000
RestartDelay5000
ConnectDelay4000
RunDelay0
EnableDebugModeFalse
ActivateAwayModeFalse
PreventSystemSleepTrue
SetCriticalProcessFalse
ClearAccessControlFalse
ClearZoneIdentifierTrue
BypassUserAccountControlFalse
RequestElevationFalse
RunOnStartupTrue
ConnectionPort54984
BackupConnectionHost127.0.0.1
PrimaryConnectionHostmicrosoftnet1.hopto.org
DefaultGroupDefault
Mutex2a1e7a61-2cdc-4bab-a049-ed037e984dac
Version1.2.2.0
BuildTime2019-08-05 18:22:21.978896
TRiD
| .exe | | | Generic CIL Executable (.NET, Mono, etc.) (63.1) |
|---|---|---|
| .exe | | | Win64 Executable (generic) (23.8) |
| .dll | | | Win32 Dynamic Link Library (generic) (5.6) |
| .exe | | | Win32 Executable (generic) (3.8) |
| .exe | | | Generic Win/DOS Executable (1.7) |
EXIF
EXE
| Subsystem: | Windows GUI |
|---|---|
| SubsystemVersion: | 4 |
| ImageVersion: | - |
| OSVersion: | 4 |
| EntryPoint: | 0x1e792 |
| UninitializedDataSize: | - |
| InitializedDataSize: | 90112 |
| CodeSize: | 116736 |
| LinkerVersion: | 6 |
| PEType: | PE32 |
| TimeStamp: | 2015:02:22 01:49:37+01:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 22-Feb-2015 00:49:37 |
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: | 22-Feb-2015 00:49:37 |
| 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 | 0x0001C798 | 0x0001C800 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 6.5981 |
.reloc | 0x00020000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.10191 |
.rsrc | 0x00022000 | 0x00015D88 | 0x00015E00 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 7.99754 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 7.99775 | 89392 | Latin 1 / Western European | UNKNOWN | RT_RCDATA |
Imports
mscoree.dll |
Total processes
46
Monitored processes
10
Malicious processes
1
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2912 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: MEDIUM Modules
Nanocore(PID) Process(2912) Jarv.exe BackupDnsServer8.8.4.4 PrimaryDnsServer8.8.8.8 UseCustomDnsServerTrue GCThreshold10485760 MaxPacketSize10485760 BufferSize65535 WanTimeout8000 LanTimeout2500 MutexTimeout5000 KeepAliveTimeout30000 TimeoutInterval5000 RestartDelay5000 ConnectDelay4000 RunDelay0 EnableDebugModeFalse ActivateAwayModeFalse PreventSystemSleepTrue SetCriticalProcessFalse ClearAccessControlFalse ClearZoneIdentifierTrue BypassUserAccountControlFalse RequestElevationFalse RunOnStartupTrue ConnectionPort54984 BackupConnectionHost127.0.0.1 PrimaryConnectionHostmicrosoftnet1.hopto.org DefaultGroupDefault Mutex2a1e7a61-2cdc-4bab-a049-ed037e984dac Version1.2.2.0 BuildTime2019-08-05 18:22:21.978896 | |||||||||||||||
| 1644 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3952 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2592 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 1016 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2992 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3352 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 3548 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 2896 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | — | Explorer.EXE | |||||||||||
User: admin Integrity Level: MEDIUM Exit code: 0 Modules
| |||||||||||||||
| 1292 | "C:\Users\admin\Desktop\Jarv.exe" | C:\Users\admin\Desktop\Jarv.exe | Explorer.EXE | ||||||||||||
User: admin Integrity Level: HIGH Modules
| |||||||||||||||
Total events
2 214
Read events
2 213
Write events
1
Delete events
0
Modification events
| (PID) Process: | (2912) Jarv.exe | Key: | HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run |
| Operation: | write | Name: | TCP Monitor |
Value: C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\TCP Monitor\tcpmon.exe | |||
Executable files
1
Suspicious files
0
Text files
1
Unknown types
0
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2912 | Jarv.exe | C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\run.dat | text | |
MD5:AB394FAFE5080ECABE322D171583E1CA | SHA256:840C05B2F694402BFAA4048EE29BE8EAD405A00D9AE7A6372456D24CD5CE9B37 | |||
| 2912 | Jarv.exe | C:\Users\admin\AppData\Roaming\90059C37-1320-41A4-B58D-2B75A9850D2F\TCP Monitor\tcpmon.exe | executable | |
MD5:6E11BDFAC14ECFEB41C12139DCD080F9 | SHA256:9C551FC227B20B361BCFBDFC1413D3F60ACD21D78F829280A2C11DFC94E9617E | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
0
TCP/UDP connections
3
DNS requests
4
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 |
|---|---|---|---|---|---|---|
2912 | Jarv.exe | 45.67.228.188:54984 | microsoftnet1.hopto.org | — | — | unknown |
DNS requests
Domain | IP | Reputation |
|---|---|---|
microsoftnet1.hopto.org |
| unknown |
Threats
PID | Process | Class | Message |
|---|---|---|---|
2912 | Jarv.exe | Potentially Bad Traffic | ET POLICY DNS Query to DynDNS Domain *.hopto .org |
2912 | Jarv.exe | Potentially Bad Traffic | ET POLICY DNS Query to DynDNS Domain *.hopto .org |
2912 | Jarv.exe | Potentially Bad Traffic | ET POLICY DNS Query to DynDNS Domain *.hopto .org |
2912 | Jarv.exe | Potentially Bad Traffic | ET POLICY DNS Query to DynDNS Domain *.hopto .org |