asyncrat | 13e20dfda7798bf9c753b1ffe61f12bc9412d56e6dee0a8391e99854c9728bc9

General

Target

f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe
Size

48KB
MD5

5b0cfae1d974badc23ea32b3ed40ec74
SHA1

78858dd42a2ab3e04f511fc6879e8275780de0e6
SHA256

f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396
SHA512

b48a84130d42dce0e1f4d22b90e559890d2613571132881e6688936084460b875029edf868a245531f48888397ef969dcd57935dcb2ca29a1524bdfefe4f28e1
SSDEEP

768:cD0q7EILuCCj+DiPAsKU89yI//ica8YbLgehjcLvEgK/JDZVc6KN:w0vr4rTopzb0fLnkJDZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

buyandsell.ddns.net:22

buyandsell.ddns.net:1616

buyandsell.ddns.net:8848

buyandsell.ddns.net:8828

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0003000000011c28-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2920	svchost.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
2844	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
2948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe
2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe
2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe
Token: SeDebugPrivilege	2920	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2220 wrote to memory of 2804	2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe	31
PID 2220 wrote to memory of 2804	2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe	31
PID 2220 wrote to memory of 2804	2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe	31
PID 2220 wrote to memory of 2952	2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe	33
PID 2220 wrote to memory of 2952	2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe	33
PID 2220 wrote to memory of 2952	2220	f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe	33
PID 2952 wrote to memory of 2844	2952	cmd.exe	35
PID 2952 wrote to memory of 2844	2952	cmd.exe	35
PID 2952 wrote to memory of 2844	2952	cmd.exe	35
PID 2804 wrote to memory of 2948	2804	cmd.exe	36
PID 2804 wrote to memory of 2948	2804	cmd.exe	36
PID 2804 wrote to memory of 2948	2804	cmd.exe	36
PID 2952 wrote to memory of 2920	2952	cmd.exe	37
PID 2952 wrote to memory of 2920	2952	cmd.exe	37
PID 2952 wrote to memory of 2920	2952	cmd.exe	37

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe
"C:\Users\Admin\AppData\Local\Temp\f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2948
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1EE6.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2952
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2844
- - C:\Users\Admin\AppData\Roaming\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2920

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1EE6.tmp.bat

Filesize
151B

MD5
e88a0ce0ac36cb87945623780ec8a10d

SHA1
db33aa4478f1e7aa3f501583ee91905e686e3022

SHA256
3e0ce98022f929e8145f233b95a81f86f6df4e0be812c16217403d716ff61d8a

SHA512
c8e839e1beb1e35df67f5fdae295e33787888370c3fed28e5ad9527f6c70387305a2b6012a9ff005e943be855082f6b2176162b9e59b05f2a73b8868b7285e45

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

Filesize
48KB

MD5
5b0cfae1d974badc23ea32b3ed40ec74

SHA1
78858dd42a2ab3e04f511fc6879e8275780de0e6

SHA256
f0ddb416ff9718e2e533af2dd47f0fea2a84f81e7eab6fd18e7e37363b772396

SHA512
b48a84130d42dce0e1f4d22b90e559890d2613571132881e6688936084460b875029edf868a245531f48888397ef969dcd57935dcb2ca29a1524bdfefe4f28e1

Download Submit
memory/2220-0-0x000007FEF5063000-0x000007FEF5064000-memory.dmp

Filesize
4KB

Download
memory/2220-1-0x0000000001300000-0x0000000001312000-memory.dmp

Filesize
72KB

Download
memory/2220-2-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2220-12-0x000007FEF5060000-0x000007FEF5A4C000-memory.dmp

Filesize
9.9MB

Download
memory/2920-16-0x0000000000230000-0x0000000000242000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads