asyncrat | a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b

Analysis

max time kernel
150s
max time network
70s
platform
windows7_x64
resource
win7v20201028
submitted
09/11/2020, 20:46

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General

Target
a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
Size 93KB
Sample201109-mlbmdgl22s
SHA256 a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b
MD5 d563f075ba91e64064d709aa000654b5
SHA1 000274f0f03545785392e83d950c259505e33802
SHA512 4c2cbe9de626aaf001ace652b7b72ae8a225c48d1bbf65c6680641e930edf642bb55003f7b2395dd9ffc3271493d2a5b73a0f614c3650f4f48146ac5cfdfc915
MD5 SHA1 SHA512

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

type1520.duckdns.org:2087

Mutex

dgfdsgsggfsd

Attributes

aes_key
TJy3oMrfmzR3gyyYibgTrDIuakYrpmZQ
anti_detection
false
autorun
true
bdos
false
delay
Default
host
type1520.duckdns.org
hwid
3
install_file
install_folder
%AppData%
mutex
dgfdsgsggfsd
pastebin_config
null
port
2087
version
0.5.7B

aes.plain

Signatures

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

Async RAT payload 7 IoCs

rat

resource	yara_rule
behavioral1/memory/1652-6-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1652-7-0x000000000040C6CE-mapping.dmp	asyncrat
behavioral1/memory/1652-8-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1652-9-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1844-30-0x000000000040C6CE-mapping.dmp	asyncrat
behavioral1/memory/1844-32-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1844-33-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1976	Intel.exe
1844	Intel.exe

Loads dropped DLL 1 IoCs

pid	Process
1688	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1876 set thread context of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1976 set thread context of 1844	1976	Intel.exe	39

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

T1053

pid	Process
980	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1924	timeout.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
1976	Intel.exe
1976	Intel.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
Token: SeDebugPrivilege	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
Token: SeDebugPrivilege	1976	Intel.exe
Token: SeDebugPrivilege	1844	Intel.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 1876 wrote to memory of 1620	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	29
PID 1876 wrote to memory of 1620	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	29
PID 1876 wrote to memory of 1620	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	29
PID 1876 wrote to memory of 1620	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	29
PID 1876 wrote to memory of 1588	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	30
PID 1876 wrote to memory of 1588	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	30
PID 1876 wrote to memory of 1588	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	30
PID 1876 wrote to memory of 1588	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	30
PID 1876 wrote to memory of 1588	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	30
PID 1876 wrote to memory of 1588	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	30
PID 1876 wrote to memory of 1588	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	30
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1876 wrote to memory of 1652	1876	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	31
PID 1652 wrote to memory of 668	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	32
PID 1652 wrote to memory of 668	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	32
PID 1652 wrote to memory of 668	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	32
PID 1652 wrote to memory of 668	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	32
PID 1652 wrote to memory of 1688	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	34
PID 1652 wrote to memory of 1688	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	34
PID 1652 wrote to memory of 1688	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	34
PID 1652 wrote to memory of 1688	1652	a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe	34
PID 668 wrote to memory of 980	668	cmd.exe	36
PID 668 wrote to memory of 980	668	cmd.exe	36
PID 668 wrote to memory of 980	668	cmd.exe	36
PID 668 wrote to memory of 980	668	cmd.exe	36
PID 1688 wrote to memory of 1924	1688	cmd.exe	37
PID 1688 wrote to memory of 1924	1688	cmd.exe	37
PID 1688 wrote to memory of 1924	1688	cmd.exe	37
PID 1688 wrote to memory of 1924	1688	cmd.exe	37
PID 1688 wrote to memory of 1976	1688	cmd.exe	38
PID 1688 wrote to memory of 1976	1688	cmd.exe	38
PID 1688 wrote to memory of 1976	1688	cmd.exe	38
PID 1688 wrote to memory of 1976	1688	cmd.exe	38
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39
PID 1976 wrote to memory of 1844	1976	Intel.exe	39

C:\Users\Admin\AppData\Local\Temp\a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
"C:\Users\Admin\AppData\Local\Temp\a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1876
- C:\Users\Admin\AppData\Local\Temp\a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
  "C:\Users\Admin\AppData\Local\Temp\a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe"
  2⤵
  PID:1620
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regasm.exe"
  2⤵
  PID:1588
- C:\Users\Admin\AppData\Local\Temp\a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe
  "C:\Users\Admin\AppData\Local\Temp\a4df5e9015f70b47dc4f2e6bae0fbeb9d108979e0cda7ef54aa123a0d33bdf8b.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1652
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Intel" /tr '"C:\Users\Admin\AppData\Roaming\Intel.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:668
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "Intel" /tr '"C:\Users\Admin\AppData\Roaming\Intel.exe"'
      4⤵
      Creates scheduled task(s)
      PID:980
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp43F3.tmp.bat""
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:1688
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:1924
  - - C:\Users\Admin\AppData\Roaming\Intel.exe
      "C:\Users\Admin\AppData\Roaming\Intel.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1976
    - - C:\Users\Admin\AppData\Roaming\Intel.exe
        
        "C:\Users\Admin\AppData\Roaming\Intel.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:1844

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1652-10-0x00000000749E0000-0x00000000750CE000-memory.dmp

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memory/1652-8-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/1652-6-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/1652-9-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/1844-34-0x0000000074960000-0x000000007504E000-memory.dmp

Download

memory/1844-33-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/1844-32-0x0000000000400000-0x0000000000412000-memory.dmp

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memory/1876-4-0x00000000003C0000-0x00000000003C5000-memory.dmp

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memory/1876-3-0x0000000000300000-0x0000000000304000-memory.dmp

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memory/1876-1-0x0000000000D40000-0x0000000000D41000-memory.dmp

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memory/1876-0-0x00000000749E0000-0x00000000750CE000-memory.dmp

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memory/1976-24-0x0000000000880000-0x0000000000881000-memory.dmp

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memory/1976-23-0x0000000074960000-0x000000007504E000-memory.dmp

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