asyncrat | e1cbce76ebc57b1595c3260845d85bd05ab5eaa165bfffbd02acde8720138086

General

Target

447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe
Size

48KB
MD5

a671a69d4e3f7425bf163eae052250ff
SHA1

80c47eae696348b607f5f54ab3101c10c64192ce
SHA256

447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5
SHA512

527a88921d628ffbe1cfbe21f204e3dbf3cea026129c6a9e3d713a82b9c9e6f75155f5da4bfe2f14845d6542cdbe129fa72214b028c4fdc397456d33f789a85b
SSDEEP

768:mbRJZBILLWQ9+jiwtelDSN+iV08Ybygecb+zqBEmyIvEgK/JbZVc6KN:mbRq9wtKDs4zb1pu9xInkJbZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
true
install_file
Windows Service .exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/T7ujLwLW

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/0x0008000000012102-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1856	Windows Service .exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
4	pastebin.com
5	pastebin.com

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
2952	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
2680	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe
2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe
2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe
Token: SeDebugPrivilege	1856	Windows Service .exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2692 wrote to memory of 3028	2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe	31
PID 2692 wrote to memory of 3028	2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe	31
PID 2692 wrote to memory of 3028	2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe	31
PID 2692 wrote to memory of 2772	2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe	32
PID 2692 wrote to memory of 2772	2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe	32
PID 2692 wrote to memory of 2772	2692	447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe	32
PID 2772 wrote to memory of 2952	2772	cmd.exe	35
PID 2772 wrote to memory of 2952	2772	cmd.exe	35
PID 2772 wrote to memory of 2952	2772	cmd.exe	35
PID 3028 wrote to memory of 2680	3028	cmd.exe	36
PID 3028 wrote to memory of 2680	3028	cmd.exe	36
PID 3028 wrote to memory of 2680	3028	cmd.exe	36
PID 2772 wrote to memory of 1856	2772	cmd.exe	37
PID 2772 wrote to memory of 1856	2772	cmd.exe	37
PID 2772 wrote to memory of 1856	2772	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\447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe
"C:\Users\Admin\AppData\Local\Temp\447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2692
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Service " /tr '"C:\Users\Admin\AppData\Roaming\Windows Service .exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows Service " /tr '"C:\Users\Admin\AppData\Roaming\Windows Service .exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2680
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpEFFA.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2952
- - C:\Users\Admin\AppData\Roaming\Windows Service .exe
    "C:\Users\Admin\AppData\Roaming\Windows Service .exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1856

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
160B

MD5
39040c6a48d2fe1f5e00a01f0eed5f9e

SHA1
d588071bcb65af8ebe2ed2d2e2e4202676ae661b

SHA256
8f09af0bd9dc7ce539b63a9fe21ad563d1f18adc0d65315ceb3153be43efd402

SHA512
c21114cd41e233f92da3b51d901aba1fce58a278f2226e3356ca58a0e790241975aaecade7de63801d49cd49e262667cf15c4054273e8e2ba4665331dc26e62f

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

Filesize
48KB

MD5
a671a69d4e3f7425bf163eae052250ff

SHA1
80c47eae696348b607f5f54ab3101c10c64192ce

SHA256
447f95e2299fbab8e30669f1fd5c71b2e69499e25adae3373093c0317f53fdc5

SHA512
527a88921d628ffbe1cfbe21f204e3dbf3cea026129c6a9e3d713a82b9c9e6f75155f5da4bfe2f14845d6542cdbe129fa72214b028c4fdc397456d33f789a85b

Download Submit
memory/1856-16-0x00000000001C0000-0x00000000001D2000-memory.dmp

Filesize
72KB

Download
memory/2692-0-0x000007FEF61F3000-0x000007FEF61F4000-memory.dmp

Filesize
4KB

Download
memory/2692-1-0x0000000000B10000-0x0000000000B22000-memory.dmp

Filesize
72KB

Download
memory/2692-2-0x000007FEF61F0000-0x000007FEF6BDC000-memory.dmp

Filesize
9.9MB

Download
memory/2692-11-0x000007FEF61F0000-0x000007FEF6BDC000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads