asyncrat | 7b9a9b11fc9794d4e31d647a3cab02fecdb048e81bc13d37d1c3533b8e96a8d3

General

Target

a92bef216bec5b6fcc6a958305f81391.exe
Size

127KB
MD5

a92bef216bec5b6fcc6a958305f81391
SHA1

196de00aba5b37c7d7d5b7da6b6eb302257a81a9
SHA256

7b9a9b11fc9794d4e31d647a3cab02fecdb048e81bc13d37d1c3533b8e96a8d3
SHA512

1ddd77de29270944f9c25769b1dd0d655abea9ea7619af560a9160ef6648a09c559348236c65919a3ec63ab5a1b97e51a20fd2fe05a716ca52de2cd510e9f3a6
SSDEEP

3072:lh0ZVtDuop7hxJB0S4rObd4r9MrUEkmnnnnnZ/iUvVfG:lh0HtDTpkrObaBM7nnnnngAO

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

| Edit 3LOSH RAT

Mutex

AsyncMutex_7SI8OkPnk

Attributes

delay
3
install
true
install_file
ContainerRuntime.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/YgX9vKea

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

Processes:

resource	yara_rule
behavioral1/memory/920-54-0x0000000000B40000-0x0000000000B66000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\ContainerRuntime.exe	asyncrat
C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe	asyncrat
C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe	asyncrat
behavioral1/memory/1332-68-0x0000000001030000-0x0000000001056000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

ContainerRuntime.exe

pid process

1332 ContainerRuntime.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

652 cmd.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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
T1053

Processes:

schtasks.exe

pid process

1972 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1640 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a92bef216bec5b6fcc6a958305f81391.exeContainerRuntime.exe

pid process

920 a92bef216bec5b6fcc6a958305f81391.exe
1332 ContainerRuntime.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a92bef216bec5b6fcc6a958305f81391.exeContainerRuntime.exe

description pid process

Token: SeDebugPrivilege 920 a92bef216bec5b6fcc6a958305f81391.exe
Token: SeDebugPrivilege 1332 ContainerRuntime.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ContainerRuntime.exe

pid process

1332 ContainerRuntime.exe

pid	process
1332	ContainerRuntime.exe

pid	process
652	cmd.exe

pid	process
1972	schtasks.exe

pid	process
1640	timeout.exe

pid	process
920	a92bef216bec5b6fcc6a958305f81391.exe
1332	ContainerRuntime.exe

description	pid	process
Token: SeDebugPrivilege	920	a92bef216bec5b6fcc6a958305f81391.exe
Token: SeDebugPrivilege	1332	ContainerRuntime.exe

pid	process
1332	ContainerRuntime.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

a92bef216bec5b6fcc6a958305f81391.execmd.execmd.exe

description	pid	process	target process
PID 920 wrote to memory of 432	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 920 wrote to memory of 432	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 920 wrote to memory of 432	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 920 wrote to memory of 432	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 920 wrote to memory of 652	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 920 wrote to memory of 652	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 920 wrote to memory of 652	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 920 wrote to memory of 652	920	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 432 wrote to memory of 1972	432	cmd.exe	schtasks.exe
PID 432 wrote to memory of 1972	432	cmd.exe	schtasks.exe
PID 432 wrote to memory of 1972	432	cmd.exe	schtasks.exe
PID 432 wrote to memory of 1972	432	cmd.exe	schtasks.exe
PID 652 wrote to memory of 1640	652	cmd.exe	timeout.exe
PID 652 wrote to memory of 1640	652	cmd.exe	timeout.exe
PID 652 wrote to memory of 1640	652	cmd.exe	timeout.exe
PID 652 wrote to memory of 1640	652	cmd.exe	timeout.exe
PID 652 wrote to memory of 1332	652	cmd.exe	ContainerRuntime.exe
PID 652 wrote to memory of 1332	652	cmd.exe	ContainerRuntime.exe
PID 652 wrote to memory of 1332	652	cmd.exe	ContainerRuntime.exe
PID 652 wrote to memory of 1332	652	cmd.exe	ContainerRuntime.exe

C:\Users\Admin\AppData\Local\Temp\a92bef216bec5b6fcc6a958305f81391.exe
"C:\Users\Admin\AppData\Local\Temp\a92bef216bec5b6fcc6a958305f81391.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:920

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ContainerRuntime" /tr '"C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:432

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "ContainerRuntime" /tr '"C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe"'
3⤵
- Creates scheduled task(s)
PID:1972

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp25F9.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:652

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1640

C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe
"C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe"
3⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1332

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp25F9.tmp.bat
Filesize
160B

MD5
9cbb4feda10d8b09c06b6cf31f302c8a

SHA1
102edff29f8f2667e72ec8c7c2ceebd6bca853df

SHA256
2a8f84ba9d24bae559c39818d2111ad61912f6ffd23c69d59e33c6c97ff4541a

SHA512
75a08f8632410d0804904160a1df74bb25fe7773a9d8a2381525db8950a2bd38239181243ced15efec136b066604093d85f963a740e8547cdb715551e7f2373b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp25F9.tmp.bat
Filesize
160B

MD5
9cbb4feda10d8b09c06b6cf31f302c8a

SHA1
102edff29f8f2667e72ec8c7c2ceebd6bca853df

SHA256
2a8f84ba9d24bae559c39818d2111ad61912f6ffd23c69d59e33c6c97ff4541a

SHA512
75a08f8632410d0804904160a1df74bb25fe7773a9d8a2381525db8950a2bd38239181243ced15efec136b066604093d85f963a740e8547cdb715551e7f2373b

Download Submit
C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe
Filesize
127KB

MD5
a92bef216bec5b6fcc6a958305f81391

SHA1
196de00aba5b37c7d7d5b7da6b6eb302257a81a9

SHA256
7b9a9b11fc9794d4e31d647a3cab02fecdb048e81bc13d37d1c3533b8e96a8d3

SHA512
1ddd77de29270944f9c25769b1dd0d655abea9ea7619af560a9160ef6648a09c559348236c65919a3ec63ab5a1b97e51a20fd2fe05a716ca52de2cd510e9f3a6

Download Submit
C:\Users\Admin\AppData\Roaming\ContainerRuntime.exe
Filesize
127KB

MD5
a92bef216bec5b6fcc6a958305f81391

SHA1
196de00aba5b37c7d7d5b7da6b6eb302257a81a9

SHA256
7b9a9b11fc9794d4e31d647a3cab02fecdb048e81bc13d37d1c3533b8e96a8d3

SHA512
1ddd77de29270944f9c25769b1dd0d655abea9ea7619af560a9160ef6648a09c559348236c65919a3ec63ab5a1b97e51a20fd2fe05a716ca52de2cd510e9f3a6

Download Submit
\Users\Admin\AppData\Roaming\ContainerRuntime.exe
Filesize
127KB

MD5
a92bef216bec5b6fcc6a958305f81391

SHA1
196de00aba5b37c7d7d5b7da6b6eb302257a81a9

SHA256
7b9a9b11fc9794d4e31d647a3cab02fecdb048e81bc13d37d1c3533b8e96a8d3

SHA512
1ddd77de29270944f9c25769b1dd0d655abea9ea7619af560a9160ef6648a09c559348236c65919a3ec63ab5a1b97e51a20fd2fe05a716ca52de2cd510e9f3a6

Download Submit
memory/920-54-0x0000000000B40000-0x0000000000B66000-memory.dmp

Filesize
152KB

Download
memory/920-55-0x0000000004970000-0x00000000049B0000-memory.dmp

Filesize
256KB

Download
memory/1332-68-0x0000000001030000-0x0000000001056000-memory.dmp

Filesize
152KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads