Malware Analysis Report

2024-08-06 13:12

Sample ID 240618-yeanlszbjp
Target 019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d
SHA256 019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d
Tags
asyncrat default discovery rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d

Threat Level: Known bad

The file 019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d was found to be: Known bad.

Malicious Activity Summary

asyncrat default discovery rat

Async RAT payload

Asyncrat family

AsyncRat

Checks installed software on the system

Unsigned PE

Suspicious behavior: EnumeratesProcesses

Suspicious use of AdjustPrivilegeToken

Suspicious use of SetWindowsHookEx

MITRE ATT&CK Matrix V13

Initial Access
TA0001
Execution
TA0002
Persistence
TA0003
Privilege Escalation
TA0004
Defense Evasion
TA0005
Credential Access
TA0006
Discovery
TA0007
Query Registry
T1012
Lateral Movement
TA0008
Collection
TA0009
Exfiltration
TA0010
Command and Control
TA0011
Impact
TA0040
Resource Development
TA0042
Reconnaissance
TA0043

Analysis: static1

Detonation Overview

Reported

2024-06-18 19:41

Signatures

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Asyncrat family

asyncrat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-18 19:41

Reported

2024-06-18 19:43

Platform

win10v2004-20240611-en

Max time kernel

107s

Max time network

151s

Command Line

"C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe"

Signatures

AsyncRat

rat asyncrat

Checks installed software on the system

discovery

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe

"C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 g.bing.com udp
US 204.79.197.237:443 g.bing.com tcp
BE 88.221.83.248:443 www.bing.com tcp
US 8.8.8.8:53 237.197.79.204.in-addr.arpa udp
US 8.8.8.8:53 71.31.126.40.in-addr.arpa udp
BG 80.76.49.148:4545 tcp
US 8.8.8.8:53 240.197.17.2.in-addr.arpa udp
US 8.8.8.8:53 248.83.221.88.in-addr.arpa udp
US 8.8.8.8:53 55.36.223.20.in-addr.arpa udp
US 8.8.8.8:53 148.49.76.80.in-addr.arpa udp
BG 80.76.49.148:4545 tcp
US 8.8.8.8:53 157.123.68.40.in-addr.arpa udp
US 8.8.8.8:53 172.214.232.199.in-addr.arpa udp
US 8.8.8.8:53 18.31.95.13.in-addr.arpa udp
US 8.8.8.8:53 92.12.20.2.in-addr.arpa udp
US 8.8.8.8:53 172.210.232.199.in-addr.arpa udp
US 8.8.8.8:53 26.35.223.20.in-addr.arpa udp
US 8.8.8.8:53 11.227.111.52.in-addr.arpa udp

Files

memory/1012-1-0x00000000003B0000-0x00000000003C8000-memory.dmp

memory/1012-0-0x00007FFA5B443000-0x00007FFA5B445000-memory.dmp

memory/1012-3-0x00007FFA5B440000-0x00007FFA5BF01000-memory.dmp

memory/1012-4-0x00007FFA5B440000-0x00007FFA5BF01000-memory.dmp

memory/1012-6-0x00007FFA5B440000-0x00007FFA5BF01000-memory.dmp

memory/1012-7-0x00007FFA5B443000-0x00007FFA5B445000-memory.dmp

memory/1012-8-0x00007FFA5B440000-0x00007FFA5BF01000-memory.dmp

memory/1012-9-0x00007FFA5B440000-0x00007FFA5BF01000-memory.dmp

memory/1012-10-0x00007FFA5B440000-0x00007FFA5BF01000-memory.dmp

memory/1012-11-0x000000001C0C0000-0x000000001C136000-memory.dmp

memory/1012-12-0x0000000002500000-0x0000000002510000-memory.dmp

memory/1012-13-0x000000001C040000-0x000000001C05E000-memory.dmp

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-18 19:41

Reported

2024-06-18 19:43

Platform

win7-20240221-en

Max time kernel

149s

Max time network

150s

Command Line

"C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe"

Signatures

AsyncRat

rat asyncrat

Checks installed software on the system

discovery

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe N/A

Processes

C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe

"C:\Users\Admin\AppData\Local\Temp\019b49d6208392f0ce7d1d166e9e666580a9bb12967f58be5ce5d03afd31ff9d.exe"

Network

Country Destination Domain Proto
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp
BG 80.76.49.148:4545 tcp

Files

memory/2292-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

memory/2292-1-0x00000000011A0000-0x00000000011B8000-memory.dmp

memory/2292-3-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

memory/2292-4-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

MD5 49aebf8cbd62d92ac215b2923fb1b9f5
SHA1 1723be06719828dda65ad804298d0431f6aff976
SHA256 b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f
SHA512 bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

C:\Users\Admin\AppData\Local\Temp\Tar32AB.tmp

MD5 4ea6026cf93ec6338144661bf1202cd1
SHA1 a1dec9044f750ad887935a01430bf49322fbdcb7
SHA256 8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8
SHA512 6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

memory/2292-102-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

memory/2292-103-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

memory/2292-124-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp