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/2032-54-0x0000000000010000-0x0000000000036000-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/1496-68-0x0000000001000000-0x0000000001026000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

ContainerRuntime.exe

pid process

1496 ContainerRuntime.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

340 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

1768 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1724 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

a92bef216bec5b6fcc6a958305f81391.exeContainerRuntime.exe

pid process

2032 a92bef216bec5b6fcc6a958305f81391.exe
1496 ContainerRuntime.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

a92bef216bec5b6fcc6a958305f81391.exeContainerRuntime.exe

description pid process

Token: SeDebugPrivilege 2032 a92bef216bec5b6fcc6a958305f81391.exe
Token: SeDebugPrivilege 1496 ContainerRuntime.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

ContainerRuntime.exe

pid process

1496 ContainerRuntime.exe

pid	process
1496	ContainerRuntime.exe

pid	process
340	cmd.exe

pid	process
1768	schtasks.exe

pid	process
1724	timeout.exe

pid	process
2032	a92bef216bec5b6fcc6a958305f81391.exe
1496	ContainerRuntime.exe

description	pid	process
Token: SeDebugPrivilege	2032	a92bef216bec5b6fcc6a958305f81391.exe
Token: SeDebugPrivilege	1496	ContainerRuntime.exe

pid	process
1496	ContainerRuntime.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

a92bef216bec5b6fcc6a958305f81391.execmd.execmd.exe

description	pid	process	target process
PID 2032 wrote to memory of 536	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 2032 wrote to memory of 536	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 2032 wrote to memory of 536	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 2032 wrote to memory of 536	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 2032 wrote to memory of 340	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 2032 wrote to memory of 340	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 2032 wrote to memory of 340	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 2032 wrote to memory of 340	2032	a92bef216bec5b6fcc6a958305f81391.exe	cmd.exe
PID 340 wrote to memory of 1724	340	cmd.exe	timeout.exe
PID 340 wrote to memory of 1724	340	cmd.exe	timeout.exe
PID 340 wrote to memory of 1724	340	cmd.exe	timeout.exe
PID 340 wrote to memory of 1724	340	cmd.exe	timeout.exe
PID 536 wrote to memory of 1768	536	cmd.exe	schtasks.exe
PID 536 wrote to memory of 1768	536	cmd.exe	schtasks.exe
PID 536 wrote to memory of 1768	536	cmd.exe	schtasks.exe
PID 536 wrote to memory of 1768	536	cmd.exe	schtasks.exe
PID 340 wrote to memory of 1496	340	cmd.exe	ContainerRuntime.exe
PID 340 wrote to memory of 1496	340	cmd.exe	ContainerRuntime.exe
PID 340 wrote to memory of 1496	340	cmd.exe	ContainerRuntime.exe
PID 340 wrote to memory of 1496	340	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:2032

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:536

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:1768

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp5C35.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:340

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1724

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:1496

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\tmp5C35.tmp.bat
Filesize
160B

MD5
f5db9c9ab71181001d573a7b9bdc8abc

SHA1
7fa893a0f86d132c02378b86e990ac229eaa6849

SHA256
f5d909eb6738b5dbf4edb0de881003017e8bc93ce44c718325da1b32242050da

SHA512
032b8bcfbcf593f825d4c7c01ab96a809176688b9758fa3ed6444e682f69d17e51af0ef464a23be64a29a21d4e93864d880619c0a7565151d9d34510090237a1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5C35.tmp.bat
Filesize
160B

MD5
f5db9c9ab71181001d573a7b9bdc8abc

SHA1
7fa893a0f86d132c02378b86e990ac229eaa6849

SHA256
f5d909eb6738b5dbf4edb0de881003017e8bc93ce44c718325da1b32242050da

SHA512
032b8bcfbcf593f825d4c7c01ab96a809176688b9758fa3ed6444e682f69d17e51af0ef464a23be64a29a21d4e93864d880619c0a7565151d9d34510090237a1

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/1496-68-0x0000000001000000-0x0000000001026000-memory.dmp

Filesize
152KB

Download
memory/1496-69-0x0000000000ED0000-0x0000000000F10000-memory.dmp

Filesize
256KB

Download
memory/1496-87-0x0000000000ED0000-0x0000000000F10000-memory.dmp

Filesize
256KB

Download
memory/2032-54-0x0000000000010000-0x0000000000036000-memory.dmp

Filesize
152KB

Download
memory/2032-55-0x00000000048A0000-0x00000000048E0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads