File name:

REclass.exe

Full analysis: https://app.any.run/tasks/25c3d48b-8783-4acf-891a-9233ae73b363
Verdict: Malicious activity
Analysis date: January 26, 2024, 21:11:14
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
MIME: application/x-dosexec
File info: PE32 executable (console) Intel 80386, for MS Windows
MD5:

6E8941D317FBF4F4950B93900F046562

SHA1:

D0B1F608791C96F8C64152C7725E8C04F0E4CCA2

SHA256:

09810C87B9E925C89C53CC59431F4F814B23B186B68FDE8FA378B3EC573E2915

SSDEEP:

6144:qr/0eeUbSdok8f5Q5BYm86gYTfXaHHyt7cmSAwydHotFZsUyff44444414EwUo/Z:qr/0eeUeok8f5Q5BYm86gYTfXaHHyt7w

ANY.RUN is an interactive service which provides full access to the guest system. Information in this report could be distorted by user actions and is provided for user acknowledgement as it is. ANY.RUN does not guarantee maliciousness or safety of the content.

  • MALICIOUS

    • Drops the executable file immediately after the start

      • REclass.exe (PID: 2640)

  • SUSPICIOUS

    • Reads security settings of Internet Explorer

      • REclass.exe (PID: 2640)

    • Checks Windows Trust Settings

      • REclass.exe (PID: 2640)

    • Reads settings of System Certificates

      • REclass.exe (PID: 2640)

    • Adds/modifies Windows certificates

      • REclass.exe (PID: 2640)

    • Reads the Internet Settings

      • REclass.exe (PID: 2640)

  • INFO

    • Reads the machine GUID from the registry

      • REclass.exe (PID: 2640)

    • Create files in a temporary directory

      • REclass.exe (PID: 2640)

    • Creates files or folders in the user directory

      • REclass.exe (PID: 2640)

    • Checks proxy server information

      • REclass.exe (PID: 2640)

    • Checks supported languages

      • REclass.exe (PID: 2640)

    • Reads the computer name

      • REclass.exe (PID: 2640)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report
No Malware configuration.

TRiD

.exe | Win32 Executable (generic) (52.7)
.exe | Generic Win/DOS Executable (23.4)
.exe | DOS Executable Generic (23.4)
.vxd | VXD Driver (0.3)

EXIF

EXE

MachineType: Intel 386 or later, and compatibles
TimeStamp: 2024:01:26 21:29:05+01:00
ImageFileCharacteristics: Executable, No line numbers, No symbols, 32-bit
PEType: PE32
LinkerVersion: 5
CodeSize: 131072
InitializedDataSize: 77824
UninitializedDataSize: -
EntryPoint: 0x1134
OSVersion: 6
ImageVersion: -
SubsystemVersion: 6
Subsystem: Windows command line
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
39
Monitored processes
1
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start reclass.exe

Process information

PID
CMD
Path
Indicators
Parent process
2640"C:\Users\admin\AppData\Local\Temp\REclass.exe" C:\Users\admin\AppData\Local\Temp\REclass.exe
explorer.exe
User:
admin
Integrity Level:
MEDIUM
Exit code:
0
Modules
Images
c:\users\admin\appdata\local\temp\reclass.exe
c:\windows\system32\ntdll.dll
c:\windows\system32\kernel32.dll
c:\windows\system32\kernelbase.dll
c:\windows\system32\user32.dll
c:\windows\system32\gdi32.dll
c:\windows\system32\lpk.dll
c:\windows\system32\usp10.dll
c:\windows\system32\msvcrt.dll
c:\windows\system32\ole32.dll
Total events
4 542
Read events
4 498
Write events
38
Delete events
6

Modification events

(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies
Operation:writeName:CachePrefix
Value:
Cookie:
(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History
Operation:writeName:CachePrefix
Value:
Visited:
(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
Operation:writeName:ProxyEnable
Value:
0
(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections
Operation:writeName:SavedLegacySettings
Value:
460000005B010000090000000000000000000000000000000400000000000000C0E333BBEAB1D3010000000000000000000000000100000002000000C0A8016B000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:ProxyBypass
Value:
1
(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:IntranetName
Value:
1
(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:UNCAsIntranet
Value:
1
(PID) Process:(2640) REclass.exeKey:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap
Operation:writeName:AutoDetect
Value:
0
(PID) Process:(2640) REclass.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\182\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
(PID) Process:(2640) REclass.exeKey:HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EnterpriseCertificates\Root\Certificates\9F6134C5FA75E4FDDE631B232BE961D6D4B97DB6
Operation:writeName:Blob
Value:
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
Executable files
0
Suspicious files
7
Text files
2
Unknown types
0

Dropped files

PID
Process
Filename
Type
2640REclass.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506compressed
MD5:AC05D27423A85ADC1622C714F2CB6184
SHA256:C6456E12E5E53287A547AF4103E0397CB9697E466CF75844312DC296D43D144D
2640REclass.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\57C8EDB95DF3F0AD4EE2DC2B8CFD4157binary
MD5:CC19AA22F856AEDC1CD7EAAEE27D9BA2
SHA256:5F86C660745C2581499585DD32087A1294967A09328E8B28E435C473889D1F72
2640REclass.exeC:\Users\admin\Downloads\revshell.txttext
MD5:C618C5845A95AB45DE47704FAA2E1A97
SHA256:BC6FA0A5E8337523B96242E856CC2AE58D5FCDD91C691047E5F4D1CAF64ED8DC
2640REclass.exeC:\Users\admin\AppData\Local\Microsoft\Windows\Temporary Internet Files\Content.IE5\PO2HN1X2\127.0.0[1].txttext
MD5:C618C5845A95AB45DE47704FAA2E1A97
SHA256:BC6FA0A5E8337523B96242E856CC2AE58D5FCDD91C691047E5F4D1CAF64ED8DC
2640REclass.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751binary
MD5:8D7FAB04509B2FAED0CFEE9791BBFC6E
SHA256:AA77C60253E8142FC50846E745AE1F77A5E087B66ED2912A008C9B004F678B0E
2640REclass.exeC:\Users\admin\AppData\Local\Temp\Cab948E.tmpcompressed
MD5:AC05D27423A85ADC1622C714F2CB6184
SHA256:C6456E12E5E53287A547AF4103E0397CB9697E466CF75844312DC296D43D144D
2640REclass.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506binary
MD5:44D4D829760C556DF31B4B7E444AE492
SHA256:14344234E3830C1F2CC114EB759398AFF020136BD5B34DCAC0F53EEB2334B348
2640REclass.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751der
MD5:60FE01DF86BE2E5331B0CDBE86165686
SHA256:C08CCBC876CD5A7CDFA9670F9637DA57F6A1282198A9BC71FC7D7247A6E5B7A8
2640REclass.exeC:\Users\admin\AppData\Local\Temp\Tar948F.tmpcat
MD5:9C0C641C06238516F27941AA1166D427
SHA256:4276AF3669A141A59388BC56A87F6614D9A9BDDDF560636C264219A7EB11256F
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
4
TCP/UDP connections
8
DNS requests
3
Threats
1

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2640
REclass.exe
GET
200
2.19.217.103:80
http://x1.c.lencr.org/
unknown
binary
717 b
unknown
2640
REclass.exe
GET
304
178.79.242.0:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?4c89ac6969fb8e79
unknown
—
—
unknown
2640
REclass.exe
GET
200
178.79.242.0:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?c9d98ad3ccdd9c4f
unknown
compressed
65.2 Kb
unknown
1080
svchost.exe
GET
304
178.79.242.0:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/disallowedcertstl.cab?c503292d7802e201
unknown
—
—
unknown
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2640
REclass.exe
76.76.21.241:443
reverse-shell.sh
AMAZON-02
US
unknown
4
System
192.168.100.255:138
—
—
—
whitelisted
4
System
192.168.100.255:137
—
—
—
whitelisted
1080
svchost.exe
224.0.0.252:5355
—
—
—
unknown
2640
REclass.exe
178.79.242.0:80
ctldl.windowsupdate.com
LLNW
DE
whitelisted
2640
REclass.exe
2.19.217.103:80
x1.c.lencr.org
Akamai International B.V.
NL
unknown
1080
svchost.exe
178.79.242.0:80
ctldl.windowsupdate.com
LLNW
DE
whitelisted

DNS requests

Domain
IP
Reputation
reverse-shell.sh
  • 76.76.21.241
  • 76.76.21.98
unknown
ctldl.windowsupdate.com
  • 178.79.242.0
  • 95.140.236.128
whitelisted
x1.c.lencr.org
  • 2.19.217.103
whitelisted

Threats

PID
Process
Class
Message
1080
svchost.exe
Misc activity
ET INFO Observed DNS Query to Reverse Shell Generator (reverse-shell .sh)
No debug info
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Reports
REclass.exe