asyncrat | 447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759

General

Target

start.exe
Size

63KB
MD5

c1ade258f05c512e98ebc4d9d1165f8a
SHA1

acf20f6a7dc7841ae06f801b887289fdc99e0488
SHA256

447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759
SHA512

5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076
SSDEEP

1536:SaKFoNbEkySYKumUYFOy5biAPY0JG4aRjnl7RUr+TG5x:SawoNbEkAKumUYFD5biF0JejxSsCx

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

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Roaming\svchos.exe	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

start.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation start.exe
Executes dropped EXE 1 IoCs

Processes:

svchos.exe

pid process

4100 svchos.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

Processes:

schtasks.exe

pid process

4240 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

4388 timeout.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation	start.exe

pid	process
4100	svchos.exe

pid	process
4240	schtasks.exe

pid	process
4388	timeout.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

start.exesvchos.exe

pid	process
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
3380	start.exe
4100	svchos.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

start.exesvchos.exe

description pid process

Token: SeDebugPrivilege 3380 start.exe
Token: SeDebugPrivilege 4100 svchos.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

svchos.exe

pid process

4100 svchos.exe

description	pid	process
Token: SeDebugPrivilege	3380	start.exe
Token: SeDebugPrivilege	4100	svchos.exe

pid	process
4100	svchos.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

start.execmd.execmd.exe

description	pid	process	target process
PID 3380 wrote to memory of 2836	3380	start.exe	cmd.exe
PID 3380 wrote to memory of 2836	3380	start.exe	cmd.exe
PID 3380 wrote to memory of 2836	3380	start.exe	cmd.exe
PID 3380 wrote to memory of 1356	3380	start.exe	cmd.exe
PID 3380 wrote to memory of 1356	3380	start.exe	cmd.exe
PID 3380 wrote to memory of 1356	3380	start.exe	cmd.exe
PID 2836 wrote to memory of 4240	2836	cmd.exe	schtasks.exe
PID 2836 wrote to memory of 4240	2836	cmd.exe	schtasks.exe
PID 2836 wrote to memory of 4240	2836	cmd.exe	schtasks.exe
PID 1356 wrote to memory of 4388	1356	cmd.exe	timeout.exe
PID 1356 wrote to memory of 4388	1356	cmd.exe	timeout.exe
PID 1356 wrote to memory of 4388	1356	cmd.exe	timeout.exe
PID 1356 wrote to memory of 4100	1356	cmd.exe	svchos.exe
PID 1356 wrote to memory of 4100	1356	cmd.exe	svchos.exe
PID 1356 wrote to memory of 4100	1356	cmd.exe	svchos.exe

C:\Users\Admin\AppData\Local\Temp\start.exe
"C:\Users\Admin\AppData\Local\Temp\start.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3380
- 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:2836
- - 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:4240
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp43A0.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1356
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:4388
- - 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:4100

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

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp43A0.tmp.bat

Filesize
150B

MD5
f0f6a566145b31d909050a5d1525b709

SHA1
e1b16520f8d4e16c5e0c6db7cdbf1f8055651b8e

SHA256
e2c871db844853cd88300212f0efee4b6b70feddb4e664b85d50e4e99092bdc0

SHA512
3128d0b5c9985214b484efed01cb414e980e79512bb67e8904d8d6c6b6440759a0a3f60e669a6692b01160025ae92c1f0b4f73f296ac2fbcb5136843a4af0911

Download Submit
C:\Users\Admin\AppData\Roaming\svchos.exe

Filesize
63KB

MD5
c1ade258f05c512e98ebc4d9d1165f8a

SHA1
acf20f6a7dc7841ae06f801b887289fdc99e0488

SHA256
447eae52ab1979405497866c72df7ec0703085ad6946ab0127f612b1518f8759

SHA512
5b652e0ef6293d7baeb7e9d8b79322ec65e98d748e1df492099fa6692d0bbc78f032df68e7028a28af06b5c27394456159351a6469fdaf777e6eb98609331076

Download Submit
memory/3380-3-0x0000000005400000-0x000000000549C000-memory.dmp

Filesize
624KB

Download
memory/3380-0-0x0000000074B8E000-0x0000000074B8F000-memory.dmp

Filesize
4KB

Download
memory/3380-2-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/3380-8-0x0000000074B80000-0x0000000075330000-memory.dmp

Filesize
7.7MB

Download
memory/3380-1-0x00000000009C0000-0x00000000009D6000-memory.dmp

Filesize
88KB

Download
memory/4100-13-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4100-14-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4100-15-0x0000000005940000-0x0000000005EE4000-memory.dmp

Filesize
5.6MB

Download
memory/4100-16-0x0000000005570000-0x0000000005602000-memory.dmp

Filesize
584KB

Download
memory/4100-17-0x0000000005700000-0x000000000570A000-memory.dmp

Filesize
40KB

Download
memory/4100-20-0x0000000006260000-0x00000000062C6000-memory.dmp

Filesize
408KB

Download
memory/4100-21-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download
memory/4100-22-0x0000000074AD0000-0x0000000075280000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads