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| File name: | Server.exe |
| Full analysis: | https://app.any.run/tasks/62712506-8d4c-498f-95b4-f2ba68fc2d70 |
| 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: | October 19, 2020, 22:39:38 |
| 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: | 89EF2BA3CCB877C27CEF71C5B63A502C |
| SHA1: | A31C67D3878F701418402464718621C4F71202EE |
| SHA256: | ED46DA701A377F5018F805CEB85AA31E72D3D50EA0ACBF84077C02C9861A2D69 |
| SSDEEP: | 384:CZyEqFgpWoy7krZtEVOsMBIHAkHC9D9O5UE5QzwBlpJNakkjh/TzF7pWn4PgreTr:w2Wol70ZtGOKgcvQO+11+L |
MALICIOUS
NJRAT was detected
- system32t.exe (PID: 1832)
Connects to CnC server
- system32t.exe (PID: 1832)
Writes to a start menu file
- system32t.exe (PID: 1832)
Changes the autorun value in the registry
- system32t.exe (PID: 1832)
SUSPICIOUS
Executed via COM
- FlashUtil32_26_0_0_131_ActiveX.exe (PID: 3448)
Executable content was dropped or overwritten
- Server.exe (PID: 2592)
- system32t.exe (PID: 1832)
Starts Internet Explorer
- system32t.exe (PID: 1832)
Starts itself from another location
- Server.exe (PID: 2592)
Creates files in the user directory
- system32t.exe (PID: 1832)
INFO
Reads settings of System Certificates
- iexplore.exe (PID: 948)
Reads Internet Cache Settings
- iexplore.exe (PID: 948)
- iexplore.exe (PID: 2404)
- iexplore.exe (PID: 2544)
Adds / modifies Windows certificates
- iexplore.exe (PID: 948)
Reads internet explorer settings
- iexplore.exe (PID: 2544)
Changes internet zones settings
- iexplore.exe (PID: 948)
Changes settings of System certificates
- iexplore.exe (PID: 948)
Creates files in the user directory
- FlashUtil32_26_0_0_131_ActiveX.exe (PID: 3448)
Application launched itself
- iexplore.exe (PID: 948)
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: | 0xc2be |
| UninitializedDataSize: | - |
| InitializedDataSize: | 1536 |
| CodeSize: | 41984 |
| LinkerVersion: | 8 |
| PEType: | PE32 |
| TimeStamp: | 2020:10:19 23:52:35+02:00 |
| MachineType: | Intel 386 or later, and compatibles |
Summary
| Architecture: | IMAGE_FILE_MACHINE_I386 |
|---|---|
| Subsystem: | IMAGE_SUBSYSTEM_WINDOWS_GUI |
| Compilation Date: | 19-Oct-2020 21:52:35 |
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: | 19-Oct-2020 21:52:35 |
| 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 | 0x0000A2C4 | 0x0000A400 | IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ | 5.67533 |
.rsrc | 0x0000E000 | 0x00000400 | 0x00000400 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ | 3.51607 |
.reloc | 0x00010000 | 0x0000000C | 0x00000200 | IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_DISCARDABLE, IMAGE_SCN_MEM_READ | 0.0776332 |
Resources
Title | Entropy | Size | Codepage | Language | Type |
|---|---|---|---|---|---|
1 | 5.00112 | 490 | UNKNOWN | UNKNOWN | RT_MANIFEST |
Imports
mscoree.dll |
Total processes
44
Monitored processes
6
Malicious processes
2
Suspicious processes
0
Behavior graph
Click at the process to see the details
Process information
PID | CMD | Path | Indicators | Parent process |
|---|---|---|---|---|
| 2592 | "C:\Users\admin\AppData\Local\Temp\Server.exe" | C:\Users\admin\AppData\Local\Temp\Server.exe | explorer.exe | |
User: admin Integrity Level: MEDIUM Exit code: 0 | ||||
| 1832 | "C:\Users\admin\AppData\Local\Temp\system32t.exe" | C:\Users\admin\AppData\Local\Temp\system32t.exe | Server.exe | |
User: admin Integrity Level: MEDIUM | ||||
| 948 | "C:\Program Files\Internet Explorer\iexplore.exe" http://www.upload.ee/image/2971847/scare4.swf | C:\Program Files\Internet Explorer\iexplore.exe | system32t.exe | |
User: admin Company: Microsoft Corporation Integrity Level: MEDIUM Description: Internet Explorer Version: 11.00.9600.16428 (winblue_gdr.131013-1700) | ||||
| 2544 | "C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:948 CREDAT:267521 /prefetch:2 | C:\Program Files\Internet Explorer\iexplore.exe | iexplore.exe | |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Internet Explorer Version: 11.00.9600.16428 (winblue_gdr.131013-1700) | ||||
| 3448 | C:\Windows\system32\Macromed\Flash\FlashUtil32_26_0_0_131_ActiveX.exe -Embedding | C:\Windows\system32\Macromed\Flash\FlashUtil32_26_0_0_131_ActiveX.exe | — | svchost.exe |
User: admin Company: Adobe Systems Incorporated Integrity Level: MEDIUM Description: Adobe® Flash® Player Installer/Uninstaller 26.0 r0 Version: 26,0,0,131 | ||||
| 2404 | "C:\Program Files\Internet Explorer\iexplore.exe" SCODEF:948 CREDAT:4134155 /prefetch:2 | C:\Program Files\Internet Explorer\iexplore.exe | iexplore.exe | |
User: admin Company: Microsoft Corporation Integrity Level: LOW Description: Internet Explorer Version: 11.00.9600.16428 (winblue_gdr.131013-1700) | ||||
Total events
1 217
Read events
1 091
Write events
0
Delete events
0
Modification events
Executable files
2
Suspicious files
5
Text files
3
Unknown types
23
Dropped files
PID | Process | Filename | Type | |
|---|---|---|---|---|
| 2544 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\Low\CabFB1E.tmp | — | |
MD5:— | SHA256:— | |||
| 2544 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\Low\TarFB1F.tmp | — | |
MD5:— | SHA256:— | |||
| 3448 | FlashUtil32_26_0_0_131_ActiveX.exe | C:\Users\admin\AppData\Roaming\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sxx:Zone.Identifier | — | |
MD5:— | SHA256:— | |||
| 3448 | FlashUtil32_26_0_0_131_ActiveX.exe | C:\Users\admin\AppData\Roaming\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sxx | — | |
MD5:— | SHA256:— | |||
| 2544 | iexplore.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B398B80134F72209547439DB21AB308D_CCF564BE5A3C924B17DDEBDEB5236E12 | der | |
MD5:D4CD11933DCA5034165587125FE3B68A | SHA256:B820ED7BF74C6A97224E329E9E679281206A675F09728AA3130DF0E02F58DBB0 | |||
| 3448 | FlashUtil32_26_0_0_131_ActiveX.exe | C:\Users\admin\AppData\Roaming\Macromedia\Flash Player\macromedia.com\support\flashplayer\sys\settings.sol | sol | |
MD5:B416862731FD29886075CE721D22CCFF | SHA256:843C85280A201E960DC1E1AA1325BF60D8CE6D0FD0E0EDC983AC4FB7AC8ACD8E | |||
| 2544 | iexplore.exe | C:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\AF3BA1CDD96BBC740C9CE3754F348BED_D6FF3D9AAD7A7E8C128787CB37013E62 | der | |
MD5:5C99052BE7C9251D111F01A0266B238E | SHA256:52E847C95368E37C93F714CE1F80F8FF846DB87BBB2822B2FE476DED169D6634 | |||
| 948 | iexplore.exe | C:\Users\admin\AppData\LocalLow\Microsoft\Internet Explorer\Services\search_{0633EE93-D776-472f-A0FF-E1416B8B2E3A}.ico | — | |
MD5:— | SHA256:— | |||
| 948 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\Cab12CC.tmp | — | |
MD5:— | SHA256:— | |||
| 948 | iexplore.exe | C:\Users\admin\AppData\Local\Temp\Cab12CD.tmp | — | |
MD5:— | SHA256:— | |||
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
5
TCP/UDP connections
13
DNS requests
7
Threats
0
HTTP requests
PID | Process | Method | HTTP Code | IP | URL | CN | Type | Size | Reputation |
|---|---|---|---|---|---|---|---|---|---|
2544 | iexplore.exe | GET | 302 | 37.187.167.53:80 | http://www.upload.ee/image/2971847/scare4.swf | FR | — | — | whitelisted |
2404 | iexplore.exe | GET | 302 | 37.187.167.53:80 | http://www.upload.ee/image/2298158/koli.swf | FR | — | — | whitelisted |
2544 | iexplore.exe | GET | 200 | 93.184.220.29:80 | http://status.rapidssl.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBRhhZrQET0hvbSHUJmNfBKqR%2FiT7wQUU8oXWfxrwAMhLxqu5KqoHIJW2nUCEAffP8uXPz%2BbuVistZM%2BMKI%3D | US | der | 471 b | shared |
2544 | iexplore.exe | GET | 200 | 93.184.220.29:80 | http://ocsp.digicert.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBSAUQYBMq2awn1Rh6Doh%2FsBYgFV7gQUA95QNVbRTLtm8KPiGxvDl7I90VUCEAilokbNS1yMg9cCtLurU0k%3D | US | der | 471 b | whitelisted |
948 | iexplore.exe | GET | 200 | 204.79.197.200:80 | http://www.bing.com/favicon.ico | US | image | 237 b | whitelisted |
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
Connections
PID | Process | IP | Domain | ASN | CN | Reputation |
|---|---|---|---|---|---|---|
948 | iexplore.exe | 204.79.197.200:80 | www.bing.com | Microsoft Corporation | US | whitelisted |
1832 | system32t.exe | 3.134.125.175:16863 | 0.tcp.ngrok.io | — | US | malicious |
948 | iexplore.exe | 37.187.167.53:443 | www.upload.ee | OVH SAS | FR | suspicious |
2544 | iexplore.exe | 93.184.220.29:80 | ocsp.digicert.com | MCI Communications Services, Inc. d/b/a Verizon Business | US | whitelisted |
2404 | iexplore.exe | 37.187.167.53:80 | www.upload.ee | OVH SAS | FR | suspicious |
2544 | iexplore.exe | 37.187.167.53:443 | www.upload.ee | OVH SAS | FR | suspicious |
2404 | iexplore.exe | 37.187.167.53:443 | www.upload.ee | OVH SAS | FR | suspicious |
2544 | iexplore.exe | 37.187.167.53:80 | www.upload.ee | OVH SAS | FR | suspicious |
DNS requests
Domain | IP | Reputation |
|---|---|---|
0.tcp.ngrok.io |
| shared |
www.upload.ee |
| whitelisted |
ocsp.digicert.com |
| whitelisted |
status.rapidssl.com |
| shared |
api.bing.com |
| whitelisted |
www.bing.com |
| whitelisted |
Threats
PID | Process | Class | Message |
|---|---|---|---|
— | — | Potential Corporate Privacy Violation | ET POLICY DNS Query to a *.ngrok domain (ngrok.io) |
1832 | system32t.exe | A Network Trojan was detected | ET TROJAN Bladabindi/njRAT CnC Command (ll) |
1832 | system32t.exe | A Network Trojan was detected | MALWARE [PTsecurity] njRAT/Bladabindi |
1832 | system32t.exe | A Network Trojan was detected | MALWARE [PTsecurity] njRAT.Gen RAT outbound connection |
12 ETPRO signatures available at the full report