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File name:

ars.exe

Full analysis: https://app.any.run/tasks/89228261-00e7-423f-817d-9a88fbc33b74
Verdict: Malicious activity
Threats:

AsyncRAT is a RAT that can monitor and remotely control infected systems. This malware was introduced on Github as a legitimate open-source remote administration software, but hackers use it for its many powerful malicious functions.

Analysis date: June 27, 2022, 11:37:57
OS: Windows 7 Professional Service Pack 1 (build: 7601, 32 bit)
Tags:
asyncrat
trojan
rat
Indicators:
MIME: application/x-dosexec
File info: PE32 executable (GUI) Intel 80386 Mono/.Net assembly, for MS Windows
MD5:

88478AE24FEC0019120BA96AE3AB993E

SHA1:

80F670346203304E1C0BC51094F64A2DC1D96D4F

SHA256:

C7BC7C1779304B9F24E2EE6762C68D4D08514E326D14945BCF3BF8FF4E781931

SSDEEP:

768:fu1a21T3EiJfWUzuydmo2qzXUns84vQ6JPI8zjbAgX3yvomlOYFltsQ2LIVbBDZ1:fu1a21T3xN2MSOQ6m83bnXiWqs7Lcd7x

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

    • ASYNCRAT was detected

      • ars.exe (PID: 2840)
    • ASYNCRAT detected by memory dumps

      • ars.exe (PID: 2840)
  • SUSPICIOUS

    • Reads Environment values

      • ars.exe (PID: 2840)
    • Checks supported languages

      • ars.exe (PID: 2840)
    • Reads the computer name

      • ars.exe (PID: 2840)
  • INFO

    • Reads settings of System Certificates

      • ars.exe (PID: 2840)
Find more information about signature artifacts and mapping to MITRE ATT&CK™ MATRIX at the full report

AsyncRat

(PID) Process(2840) ars.exe
Install_Folder%AppData%
Saltbfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
Aes_Keyb511aa6f5de9e2d1fc46ee8dc176db122ace5a548043d9cffacd70389bb76f33
BotnetDefault
bdosfalse
PasteBinnull
AntiVMfalse
Server_SignatureTX7E3+Y0RMn6S9cPpE2BpF63Em4zGqHXoKA6ft/LTm9vpP4O0qrB6xfT0zlhavLD4yt/OykDGJz1299F9+QvCYbOO/BAKdX5GK+3lBN60T2ToQVyrQQwrVfVH8bduQNuk9Bcz6+z0SO/nlEWxY+5KRAOoTrtSDVgS17IW1GKWAim5FofkUOkJuPz19fFUdvR1GY/ZAk2NNO66CEGfUPm6By6EHkAgGZSu26T+/2B98KTzQoEata0VGGFXEh6nQKHu5FGEbrknYxf3e/uqTS2vTGoPuiNvURmBel/0lbLesd8...
CertificateMIIE8jCCAtqgAwIBAgIQANFiG4Mg2HIA5Lxj8yDxUTANBgkqhkiG9w0BAQ0FADAaMRgwFgYDVQQDDA9Bc3luY1JBVCBTZXJ2ZXIwIBcNMjIwNjE2MDk0ODU4WhgPOTk5OTEyMzEyMzU5NTlaMBoxGDAWBgNVBAMMD0FzeW5jUkFUIFNlcnZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAJl+47VIlD3Y1HOX/FJuqaphOhP3yaVxpxqWSn+5ssUVmBLOxZYSkOvYiQf5cUU5hLfgWnnuKOzF...
MutexAsyncMutex_6SI8OkPnk
Autorunfalse
Version0.5.7B
Ports (2)22138
1234
C2 (1)eu-central-7075.packetriot.net
No Malware configuration.

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

AssemblyVersion: 1.0.0.0
ProductVersion: 1.0.0.0
ProductName: -
OriginalFileName: Stub.exe
LegalTrademarks: -
LegalCopyright: -
InternalName: Stub.exe
FileVersion: 1.0.0.0
FileDescription: -
CompanyName: -
Comments: -
CharacterSet: Unicode
LanguageCode: Neutral
FileSubtype: -
ObjectFileType: Executable application
FileOS: Win32
FileFlags: (none)
FileFlagsMask: 0x003f
ProductVersionNumber: 1.0.0.0
FileVersionNumber: 1.0.0.0
Subsystem: Windows GUI
SubsystemVersion: 4
ImageVersion: -
OSVersion: 4
EntryPoint: 0xc74e
UninitializedDataSize: -
InitializedDataSize: 2560
CodeSize: 43008
LinkerVersion: 8
PEType: PE32
TimeStamp: 2020:05:10 07:24:51+02:00
MachineType: Intel 386 or later, and compatibles

Summary

Architecture: IMAGE_FILE_MACHINE_I386
Subsystem: IMAGE_SUBSYSTEM_WINDOWS_GUI
Compilation Date: 10-May-2020 05:24:51
Comments: -
CompanyName: -
FileDescription: -
FileVersion: 1.0.0.0
InternalName: Stub.exe
LegalCopyright: -
LegalTrademarks: -
OriginalFilename: Stub.exe
ProductName: -
ProductVersion: 1.0.0.0
Assembly Version: 1.0.0.0

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: 10-May-2020 05:24:51
Pointer to Symbol Table: 0x00000000
Number of symbols: 0
Size of Optional Header: 0x00E0
Characteristics:
  • IMAGE_FILE_32BIT_MACHINE
  • IMAGE_FILE_EXECUTABLE_IMAGE

Sections

Name
Virtual Address
Virtual Size
Raw Size
Charateristics
Entropy
.text
0x00002000
0x0000A754
0x0000A800
IMAGE_SCN_CNT_CODE, IMAGE_SCN_MEM_EXECUTE, IMAGE_SCN_MEM_READ
5.51585
.rsrc
0x0000E000
0x000007FF
0x00000800
IMAGE_SCN_CNT_INITIALIZED_DATA, IMAGE_SCN_MEM_READ
4.88507
.reloc
0x00010000
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
5.22615
1171
UNKNOWN
UNKNOWN
RT_MANIFEST

Imports

mscoree.dll
No data.
screenshot
All screenshots are available in the full report
All screenshots are available in the full report
Total processes
37
Monitored processes
1
Malicious processes
1
Suspicious processes
0

Behavior graph

Click at the process to see the details
start #ASYNCRAT ars.exe

Process information

PID
CMD
Path
Indicators
Parent process
2840"C:\Users\admin\AppData\Local\Temp\ars.exe" C:\Users\admin\AppData\Local\Temp\ars.exe
Explorer.EXE
User:
admin
Integrity Level:
MEDIUM
Version:
1.0.0.0
AsyncRat
(PID) Process(2840) ars.exe
Install_Folder%AppData%
Saltbfeb1e56fbcd973bb219022430a57843003d5644d21e62b9d4f180e7e6c33941
Aes_Keyb511aa6f5de9e2d1fc46ee8dc176db122ace5a548043d9cffacd70389bb76f33
BotnetDefault
bdosfalse
PasteBinnull
AntiVMfalse
Server_SignatureTX7E3+Y0RMn6S9cPpE2BpF63Em4zGqHXoKA6ft/LTm9vpP4O0qrB6xfT0zlhavLD4yt/OykDGJz1299F9+QvCYbOO/BAKdX5GK+3lBN60T2ToQVyrQQwrVfVH8bduQNuk9Bcz6+z0SO/nlEWxY+5KRAOoTrtSDVgS17IW1GKWAim5FofkUOkJuPz19fFUdvR1GY/ZAk2NNO66CEGfUPm6By6EHkAgGZSu26T+/2B98KTzQoEata0VGGFXEh6nQKHu5FGEbrknYxf3e/uqTS2vTGoPuiNvURmBel/0lbLesd8...
CertificateMIIE8jCCAtqgAwIBAgIQANFiG4Mg2HIA5Lxj8yDxUTANBgkqhkiG9w0BAQ0FADAaMRgwFgYDVQQDDA9Bc3luY1JBVCBTZXJ2ZXIwIBcNMjIwNjE2MDk0ODU4WhgPOTk5OTEyMzEyMzU5NTlaMBoxGDAWBgNVBAMMD0FzeW5jUkFUIFNlcnZlcjCCAiIwDQYJKoZIhvcNAQEBBQADggIPADCCAgoCggIBAJl+47VIlD3Y1HOX/FJuqaphOhP3yaVxpxqWSn+5ssUVmBLOxZYSkOvYiQf5cUU5hLfgWnnuKOzF...
MutexAsyncMutex_6SI8OkPnk
Autorunfalse
Version0.5.7B
Ports (2)22138
1234
C2 (1)eu-central-7075.packetriot.net
Total events
4 274
Read events
4 260
Write events
14
Delete events
0

Modification events

(PID) Process:(2840) ars.exeKey:HKEY_CLASSES_ROOT\Local Settings\MuiCache\16C\52C64B7E
Operation:writeName:LanguageList
Value:
en-US
Executable files
0
Suspicious files
3
Text files
0
Unknown types
1

Dropped files

PID
Process
Filename
Type
2840ars.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\77EC63BDA74BD0D0E0426DC8F8008506compressed
MD5:308336E7F515478969B24C13DED11EDE
SHA256:889B832323726A9F10AD03F85562048FDCFE20C9FF6F9D37412CF477B4E92FF9
2840ars.exeC:\Users\admin\AppData\Local\Temp\CabD071.tmpcompressed
MD5:308336E7F515478969B24C13DED11EDE
SHA256:889B832323726A9F10AD03F85562048FDCFE20C9FF6F9D37412CF477B4E92FF9
2840ars.exeC:\Users\admin\AppData\Local\Temp\TarD072.tmpcat
MD5:2D8A5090656DE9FB55DD0F3BA20F9299
SHA256:44AE1E61A4E6305C15AAA52FD1B29DDB060E69233703CBA611F5E781D766442E
2840ars.exeC:\Users\admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\77EC63BDA74BD0D0E0426DC8F8008506binary
MD5:6DD6B4CF7D5C1F8F964A9EA590342954
SHA256:992CB557A73697655301DC55619C2BD05A577C787B12E89DBCFA97E44CFBCE6C
Download PCAP, analyze network streams, HTTP content and a lot more at the full report
HTTP(S) requests
1
TCP/UDP connections
4
DNS requests
4
Threats
0

HTTP requests

PID
Process
Method
HTTP Code
IP
URL
CN
Type
Size
Reputation
2840
ars.exe
GET
200
95.140.236.128:80
http://ctldl.windowsupdate.com/msdownload/update/v3/static/trustedr/en/authrootstl.cab?223ad4379d939f9d
GB
compressed
60.0 Kb
whitelisted
Download PCAP, analyze network streams, HTTP content and a lot more at the full report

Connections

PID
Process
IP
Domain
ASN
CN
Reputation
2840
ars.exe
167.71.56.116:22138
eu-central-7075.packetriot.net
US
malicious
2840
ars.exe
95.140.236.128:80
ctldl.windowsupdate.com
Limelight Networks, Inc.
GB
malicious
192.168.100.2:53
whitelisted
167.71.56.116:1234
eu-central-7075.packetriot.net
US
malicious

DNS requests

Domain
IP
Reputation
www.microsoft.com
whitelisted
eu-central-7075.packetriot.net
  • 167.71.56.116
malicious
ctldl.windowsupdate.com
  • 95.140.236.128
  • 178.79.242.128
whitelisted

Threats

PID
Process
Class
Message
2840
ars.exe
A Network Trojan was detected
ET TROJAN Observed Malicious SSL Cert (AsyncRAT Server)
No debug info