asyncrat | da8db952d42f91632429fd3759e0bb3e33f5ed22bc317675eea6ac6b51981814

General

Target

AsyncClient.exe
Size

47KB
MD5

1ea406daa37b374e05e72266b4dbf69d
SHA1

3fb422e15a57dc66f3f50e14640888cf60cf5a69
SHA256

da8db952d42f91632429fd3759e0bb3e33f5ed22bc317675eea6ac6b51981814
SHA512

ae70490947f11e50a4069a0295040e1b61d19a1845454a8978f907a7aa29de31be5726a0183b17fc4511dbd8bd9d98fb7c97493ee7e756e7997d4566b9454ec3
SSDEEP

768:kuifo9Tg4xr5WUx9tDmo2qr/QVxwfiRTSPIHIfZh0bhDS31wuvSALlG6BLodGcBo:kuqo9Tg+L2nwmT7HIB2bhDSzqAxj9olo

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

Jamalhacker-55716.portmap.host:55716

Mutex

Px6vesn1b0HA

Attributes

delay
3
install
true
install_file
Windows pro.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/0x000200000002aa2b-12.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
4260	Windows pro.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1184	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
4920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe
1144	AsyncClient.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1144	AsyncClient.exe
Token: SeDebugPrivilege	4260	Windows pro.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1144 wrote to memory of 2848	1144	AsyncClient.exe	83
PID 1144 wrote to memory of 2848	1144	AsyncClient.exe	83
PID 1144 wrote to memory of 2848	1144	AsyncClient.exe	83
PID 1144 wrote to memory of 3612	1144	AsyncClient.exe	85
PID 1144 wrote to memory of 3612	1144	AsyncClient.exe	85
PID 1144 wrote to memory of 3612	1144	AsyncClient.exe	85
PID 2848 wrote to memory of 4920	2848	cmd.exe	87
PID 2848 wrote to memory of 4920	2848	cmd.exe	87
PID 2848 wrote to memory of 4920	2848	cmd.exe	87
PID 3612 wrote to memory of 1184	3612	cmd.exe	88
PID 3612 wrote to memory of 1184	3612	cmd.exe	88
PID 3612 wrote to memory of 1184	3612	cmd.exe	88
PID 3612 wrote to memory of 4260	3612	cmd.exe	89
PID 3612 wrote to memory of 4260	3612	cmd.exe	89
PID 3612 wrote to memory of 4260	3612	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1144
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows pro" /tr '"C:\Users\Admin\AppData\Roaming\Windows pro.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2848
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows pro" /tr '"C:\Users\Admin\AppData\Roaming\Windows pro.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA3B2.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3612
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1184
- - C:\Users\Admin\AppData\Roaming\Windows pro.exe
    "C:\Users\Admin\AppData\Roaming\Windows pro.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4260

Network

MITRE ATT&CK Enterprise v15

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA3B2.tmp.bat

Filesize
155B

MD5
25cfed5f952331338218406482d31ee1

SHA1
fa834254ad052a20c1f4a9c3551323ffc1fbdd03

SHA256
07c6a7f3d35e592752d6127b4378203629c816a2a2490409ed7e29fd77cf718e

SHA512
bc61402dc4a23e9a7d6a171e66f7d05bab6244c31c1c71910d9aaca1d6fa18bdda96126c83106c936e869444af59a84da70b4a1f8306ccd43ce2b08ddf7877dc

Download Submit
C:\Users\Admin\AppData\Roaming\Windows pro.exe

Filesize
47KB

MD5
1ea406daa37b374e05e72266b4dbf69d

SHA1
3fb422e15a57dc66f3f50e14640888cf60cf5a69

SHA256
da8db952d42f91632429fd3759e0bb3e33f5ed22bc317675eea6ac6b51981814

SHA512
ae70490947f11e50a4069a0295040e1b61d19a1845454a8978f907a7aa29de31be5726a0183b17fc4511dbd8bd9d98fb7c97493ee7e756e7997d4566b9454ec3

Download Submit
memory/1144-0-0x000000007483E000-0x000000007483F000-memory.dmp

Filesize
4KB

Download
memory/1144-1-0x0000000000440000-0x0000000000452000-memory.dmp

Filesize
72KB

Download
memory/1144-2-0x0000000074830000-0x0000000074FE1000-memory.dmp

Filesize
7.7MB

Download
memory/1144-3-0x0000000004E00000-0x0000000004E9C000-memory.dmp

Filesize
624KB

Download
memory/1144-8-0x0000000074830000-0x0000000074FE1000-memory.dmp

Filesize
7.7MB

Download
memory/4260-13-0x0000000074830000-0x0000000074FE1000-memory.dmp

Filesize
7.7MB

Download
memory/4260-14-0x0000000074830000-0x0000000074FE1000-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