asyncrat | 76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3

General

Target
76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
Size 45KB
Sample260530-ydmlsaev5j
SHA256 76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3
MD5 2e87a7171fbf2b8a513a97023f962430
SHA1 09dadd7cd601c91bc150a84e859c654150372922
SHA512 3ce930b45fe87fded9d8e138dd3174e4aa99e41e21609661087852150305757a7f08175ed2bee0db1717d88da88f47ec991b9104770e2ec6ec1ccc536874f27e
SSDEEP 768:puTO9TgQsFcZWURDOjmo2qwfQ6vincPI96jbtgX3irhO/frkpd9RXBDZ7x:puTO9TgQCv2IKU9Wb6XSrhO/foTHRd7x
TLSH
T1A3233B003BE9C12BF2BE5F789DF26145467AF6633603D68E1CC411DB5613BC68A426FA
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

chichnhau.vip:443
chichnhau.vip:80
chichnhau.vip:7797
chichnhau.vip:8707
chichnhau.vip:6620
www.chichnhau.vip:443
www.chichnhau.vip:80
www.chichnhau.vip:7797
www.chichnhau.vip:8707
www.chichnhau.vip:6620
melissa.chichnhau.vip:443
melissa.chichnhau.vip:80
melissa.chichnhau.vip:7797
melissa.chichnhau.vip:8707
melissa.chichnhau.vip:6620
clop.chichnhau.vip:443
clop.chichnhau.vip:80
clop.chichnhau.vip:7797
clop.chichnhau.vip:8707
clop.chichnhau.vip:6620

Mutex

60IblqXUfSxs

Attributes

delay
0
install
true
install_file
t8qwmpd.exe
install_folder
%AppData%

aes.plain

Signatures

Family: 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
behavioral2/files/0x001a00000002b4ba-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
3140	t8qwmpd.exe
956	t8qwmpd.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	t8qwmpd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	t8qwmpd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4392	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
752	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
Token: SeDebugPrivilege	3140	t8qwmpd.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1992 wrote to memory of 4004	1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe	80
PID 1992 wrote to memory of 3844	1992	76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe	82
PID 4004 wrote to memory of 752	4004	cmd.exe	84
PID 3844 wrote to memory of 4392	3844	cmd.exe	85
PID 3844 wrote to memory of 956	3844	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe
"C:\Users\Admin\AppData\Local\Temp\76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "t8qwmpd" /tr '"C:\Users\Admin\AppData\Roaming\t8qwmpd.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4004
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "t8qwmpd" /tr '"C:\Users\Admin\AppData\Roaming\t8qwmpd.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:752
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp142F.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3844
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4392
- - C:\Users\Admin\AppData\Roaming\t8qwmpd.exe
    "C:\Users\Admin\AppData\Roaming\t8qwmpd.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:956

C:\Users\Admin\AppData\Roaming\t8qwmpd.exe
"C:\Users\Admin\AppData\Roaming\t8qwmpd.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:3140

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmp142F.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp142F.tmp.bat
Size 151B
SHA256 42726f4341118afcedac10b1519c35a81eb50c2f297d427dad898a5d364f6df2
MD5 a8fc98d9c5513a003cab8ab53c25d566
SHA1 89bb6f80373bd9e0d75884da6eca43f583a78d85
SHA512 5178aa15bb27f083bc71a200c2c813cd7e68405d3efe1c259a7aa630e27ed13fc0340d60e874a8b92c553a2530af4c1db63e49a104a0f07c6452373d5e546fd8
TLSH
T11CC02B5271CDEE0E280D542306FAD8DE91727C1D3F44BB10C304440D5280448F4FD349
MD5 SHA1 SHA512 TLSH

Submit Download

t8qwmpd.exe

Path C:\Users\Admin\AppData\Roaming\t8qwmpd.exe
Size 45KB
SHA256 76147eaf01491d9ecac43c997dc1353bf8aa75ae175ee2a03adc15d1b2ca96b3
MD5 2e87a7171fbf2b8a513a97023f962430
SHA1 09dadd7cd601c91bc150a84e859c654150372922
SHA512 3ce930b45fe87fded9d8e138dd3174e4aa99e41e21609661087852150305757a7f08175ed2bee0db1717d88da88f47ec991b9104770e2ec6ec1ccc536874f27e
SSDEEP 768:puTO9TgQsFcZWURDOjmo2qwfQ6vincPI96jbtgX3irhO/frkpd9RXBDZ7x:puTO9TgQCv2IKU9Wb6XSrhO/foTHRd7x
TLSH
T1A3233B003BE9C12BF2BE5F789DF26145467AF6633603D68E1CC411DB5613BC68A426FA
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1992-0-0x00000000005D0000-0x00000000005E2000-memory.dmp

Download

memory/1992-1-0x0000000002A80000-0x0000000002A90000-memory.dmp

Download

memory/1992-2-0x0000000004F80000-0x000000000501C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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