asyncrat | 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759

General

Target
start.exe
Size 63KB
Sample240508-n7pm5abe4x
SHA256 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759
MD5 c1ade258f05c512e98ebc4d9d1165f8a
SHA1 acf20f6a7dc7841ae06f801b887289fdc99e0488
SHA512 5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076
SSDEEP 1536:SaKFoNbEkySYKumUYFOy5biAPY0JG4aRjnl7RUr+TG5x:SawoNbEkAKumUYFD5biF0JejxSsCx
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

asyncrat exodus_market rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Botnet

Exodus_Market

C2

leetboy.dynuddns.net:1339

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
svchos.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 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000c00000001220d-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2884	svchos.exe

Loads dropped DLL 1 IoCs

pid	Process
3028	cmd.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001
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
2688	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2692	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3004	start.exe
3004	start.exe
2884	svchos.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	start.exe
Token: SeDebugPrivilege	2884	svchos.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2884	svchos.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3004 wrote to memory of 2548	3004	start.exe	28
PID 3004 wrote to memory of 2548	3004	start.exe	28
PID 3004 wrote to memory of 2548	3004	start.exe	28
PID 3004 wrote to memory of 2548	3004	start.exe	28
PID 3004 wrote to memory of 3028	3004	start.exe	30
PID 3004 wrote to memory of 3028	3004	start.exe	30
PID 3004 wrote to memory of 3028	3004	start.exe	30
PID 3004 wrote to memory of 3028	3004	start.exe	30
PID 2548 wrote to memory of 2688	2548	cmd.exe	32
PID 2548 wrote to memory of 2688	2548	cmd.exe	32
PID 2548 wrote to memory of 2688	2548	cmd.exe	32
PID 2548 wrote to memory of 2688	2548	cmd.exe	32
PID 3028 wrote to memory of 2692	3028	cmd.exe	33
PID 3028 wrote to memory of 2692	3028	cmd.exe	33
PID 3028 wrote to memory of 2692	3028	cmd.exe	33
PID 3028 wrote to memory of 2692	3028	cmd.exe	33
PID 3028 wrote to memory of 2884	3028	cmd.exe	34
PID 3028 wrote to memory of 2884	3028	cmd.exe	34
PID 3028 wrote to memory of 2884	3028	cmd.exe	34
PID 3028 wrote to memory of 2884	3028	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3004
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2548
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchos" /tr '"C:\Users\Admin\AppData\Roaming\svchos.exe"'
    3⤵
    - Creates scheduled task(s)
    PID:2688
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp713A.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2692
- - C:\Users\Admin\AppData\Roaming\svchos.exe
    "C:\Users\Admin\AppData\Roaming\svchos.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

tmp713A.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp713A.tmp.bat
Size 150B
SHA256 2523763e6de5c320bb65d0ad86bdfd0329a435e2de1ae2df60886c720e76bab0
MD5 b1ba623ee7e95b94f6b61f20e7e27289
SHA1 5d2f75329ceddc7711347d58c0b4ca7fca9f411c
SHA512 3988467944d9a0c108974761c59547dcbf093c9b2621780afcd2f576f0b92a03a7ddacc4b2d3cc414fb2ec855f74343a109315e9863c689e1203d68503221ef9
MD5 SHA1 SHA512

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svchos.exe

Path \Users\Admin\AppData\Roaming\svchos.exe
Size 63KB
SHA256 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759
MD5 c1ade258f05c512e98ebc4d9d1165f8a
SHA1 acf20f6a7dc7841ae06f801b887289fdc99e0488
SHA512 5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076
SSDEEP 1536:SaKFoNbEkySYKumUYFOy5biAPY0JG4aRjnl7RUr+TG5x:SawoNbEkAKumUYFD5biF0JejxSsCx
MD5 SHA1 SHA512 SSDEEP

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memory/2884-16-0x00000000010C0000-0x00000000010D6000-memory.dmp

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memory/3004-0-0x0000000073F3E000-0x0000000073F3F000-memory.dmp

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memory/3004-1-0x00000000011D0000-0x00000000011E6000-memory.dmp

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memory/3004-2-0x0000000073F30000-0x000000007461E000-memory.dmp

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memory/3004-11-0x0000000073F30000-0x000000007461E000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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