asyncrat | 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8

Analysis

max time kernel
148s
max time network
120s
platform
windows7_x64
resource
win7-20230712-en
resource tags

arch:x64arch:x86image:win7-20230712-enlocale:en-usos:windows7-x64system
submitted
03/08/2023, 11:05

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General

Target
2.exe
Size 45KB
Sample230803-m6ssqaeb6z
SHA256 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8
MD5 dea3149aae31bd4116adba54840af10f
SHA1 71f22e3720be46ea1d89ca7d47be95fc64a1a741
SHA512 a6cdf451453676080f956330e217a4dd64ba0875ab6d951deaa83b9e38dd32fa87fa1e761dafd61cf55c659a5e333ff55f9726d6a5684f8d18c6843d4297a445
SSDEEP 768:PuO01TXQpMlWUlr7e+fmo2qD7R5+oD6/1ZPIUYgzjb2gX3iHrg3UCBDZrx:PuO01TXOw2k1G/1W9g3bpXS6rdrx
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

pruevapoiu-20286.portmap.io:20286

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
2.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 5 IoCs

rat

resource	yara_rule
behavioral1/memory/2080-54-0x0000000000050000-0x0000000000062000-memory.dmp	asyncrat
behavioral1/files/0x0009000000012282-66.dat	asyncrat
behavioral1/files/0x0009000000012282-67.dat	asyncrat
behavioral1/files/0x0009000000012282-68.dat	asyncrat
behavioral1/memory/2516-69-0x0000000000320000-0x0000000000332000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2516	2.exe

Loads dropped DLL 1 IoCs

pid	Process
860	cmd.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1948	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2116	timeout.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2080	2.exe
2080	2.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2080	2.exe
Token: SeDebugPrivilege	2516	2.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2080 wrote to memory of 1576	2080	2.exe	28
PID 2080 wrote to memory of 1576	2080	2.exe	28
PID 2080 wrote to memory of 1576	2080	2.exe	28
PID 2080 wrote to memory of 1576	2080	2.exe	28
PID 2080 wrote to memory of 860	2080	2.exe	30
PID 2080 wrote to memory of 860	2080	2.exe	30
PID 2080 wrote to memory of 860	2080	2.exe	30
PID 2080 wrote to memory of 860	2080	2.exe	30
PID 860 wrote to memory of 2116	860	cmd.exe	32
PID 860 wrote to memory of 2116	860	cmd.exe	32
PID 860 wrote to memory of 2116	860	cmd.exe	32
PID 860 wrote to memory of 2116	860	cmd.exe	32
PID 1576 wrote to memory of 1948	1576	cmd.exe	33
PID 1576 wrote to memory of 1948	1576	cmd.exe	33
PID 1576 wrote to memory of 1948	1576	cmd.exe	33
PID 1576 wrote to memory of 1948	1576	cmd.exe	33
PID 860 wrote to memory of 2516	860	cmd.exe	36
PID 860 wrote to memory of 2516	860	cmd.exe	36
PID 860 wrote to memory of 2516	860	cmd.exe	36
PID 860 wrote to memory of 2516	860	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\2.exe
"C:\Users\Admin\AppData\Local\Temp\2.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "2" /tr '"C:\Users\Admin\AppData\Roaming\2.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1576
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "2" /tr '"C:\Users\Admin\AppData\Roaming\2.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:1948
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE041.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:860
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2116
- - C:\Users\Admin\AppData\Roaming\2.exe
    "C:\Users\Admin\AppData\Roaming\2.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2516

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpE041.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpE041.tmp.bat
Size 145B
SHA256 10643e57b0956605586ac2c6a7fe5825bd5024df465f952701c954edad079713
MD5 3105b1227c27a8e4eaf4bfef559df189
SHA1 5f665f4765e5e64d76164150ba8671d2f4031b90
SHA512 ac104b3122b75e79be96d566ff7f645d3f53f0e06b0a2aef5ed32bab4bf859e0ddab8fb4387bfeaf21c9d283333dc0a021ccab4950c9924fa5b9931e1cba70d9
MD5 SHA1 SHA512

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tmpE041.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpE041.tmp.bat
Size 145B
SHA256 10643e57b0956605586ac2c6a7fe5825bd5024df465f952701c954edad079713
MD5 3105b1227c27a8e4eaf4bfef559df189
SHA1 5f665f4765e5e64d76164150ba8671d2f4031b90
SHA512 ac104b3122b75e79be96d566ff7f645d3f53f0e06b0a2aef5ed32bab4bf859e0ddab8fb4387bfeaf21c9d283333dc0a021ccab4950c9924fa5b9931e1cba70d9
MD5 SHA1 SHA512

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2.exe

Path C:\Users\Admin\AppData\Roaming\2.exe
Size 45KB
SHA256 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8
MD5 dea3149aae31bd4116adba54840af10f
SHA1 71f22e3720be46ea1d89ca7d47be95fc64a1a741
SHA512 a6cdf451453676080f956330e217a4dd64ba0875ab6d951deaa83b9e38dd32fa87fa1e761dafd61cf55c659a5e333ff55f9726d6a5684f8d18c6843d4297a445
SSDEEP 768:PuO01TXQpMlWUlr7e+fmo2qD7R5+oD6/1ZPIUYgzjb2gX3iHrg3UCBDZrx:PuO01TXOw2k1G/1W9g3bpXS6rdrx
MD5 SHA1 SHA512 SSDEEP

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2.exe

Path C:\Users\Admin\AppData\Roaming\2.exe
Size 45KB
SHA256 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8
MD5 dea3149aae31bd4116adba54840af10f
SHA1 71f22e3720be46ea1d89ca7d47be95fc64a1a741
SHA512 a6cdf451453676080f956330e217a4dd64ba0875ab6d951deaa83b9e38dd32fa87fa1e761dafd61cf55c659a5e333ff55f9726d6a5684f8d18c6843d4297a445
SSDEEP 768:PuO01TXQpMlWUlr7e+fmo2qD7R5+oD6/1ZPIUYgzjb2gX3iHrg3UCBDZrx:PuO01TXOw2k1G/1W9g3bpXS6rdrx
MD5 SHA1 SHA512 SSDEEP

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2.exe

Path \Users\Admin\AppData\Roaming\2.exe
Size 45KB
SHA256 49a4c489dfa7a53be07d44857f65fd7a398d7a631a51532f1a9f3b5340979fe8
MD5 dea3149aae31bd4116adba54840af10f
SHA1 71f22e3720be46ea1d89ca7d47be95fc64a1a741
SHA512 a6cdf451453676080f956330e217a4dd64ba0875ab6d951deaa83b9e38dd32fa87fa1e761dafd61cf55c659a5e333ff55f9726d6a5684f8d18c6843d4297a445
SSDEEP 768:PuO01TXQpMlWUlr7e+fmo2qD7R5+oD6/1ZPIUYgzjb2gX3iHrg3UCBDZrx:PuO01TXOw2k1G/1W9g3bpXS6rdrx
MD5 SHA1 SHA512 SSDEEP

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memory/2080-64-0x0000000074830000-0x0000000074F1E000-memory.dmp

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memory/2080-53-0x0000000074830000-0x0000000074F1E000-memory.dmp

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memory/2080-55-0x0000000004D10000-0x0000000004D50000-memory.dmp

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memory/2080-54-0x0000000000050000-0x0000000000062000-memory.dmp

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memory/2516-70-0x0000000074140000-0x000000007482E000-memory.dmp

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memory/2516-69-0x0000000000320000-0x0000000000332000-memory.dmp

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memory/2516-71-0x0000000004B10000-0x0000000004B50000-memory.dmp

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memory/2516-72-0x0000000074140000-0x000000007482E000-memory.dmp

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memory/2516-73-0x0000000004B10000-0x0000000004B50000-memory.dmp

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