asyncrat | 4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67

General

Target

setup.exe
Size

63KB
MD5

1b8eea1226cd913da97c0c0b8a806b18
SHA1

4320bde806e4fb5792be6bfb2e0b45ae30033fa0
SHA256

4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67
SHA512

70fca344d74efe3e1bf9268e36bd2aac698e69cde340559f5a0df603bf996d06f6b60920cf02ecf19c8532f6a6d6210a4c9ad54a61ddbf12541ae0cfee3da7f1
SSDEEP

1536:zZgPH9F4s1THE6HTIiTEulumGbb+wAe+EhGG0kpqKmY7:zZgPH9F4sBHLTIiTnGbb+xmuvz

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.2

Botnet

Default

C2

stores-less.gl.at.ply.gg:45080

Mutex

AtomRatMutex_penka

Attributes

delay
1
install
true
install_file
piskat.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/0x002e000000019604-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
3008	piskat.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
2360	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
2712	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2368	setup.exe
2368	setup.exe
2368	setup.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	setup.exe
Token: SeDebugPrivilege	3008	piskat.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 2180	2368	setup.exe	30
PID 2368 wrote to memory of 2180	2368	setup.exe	30
PID 2368 wrote to memory of 2180	2368	setup.exe	30
PID 2368 wrote to memory of 2984	2368	setup.exe	32
PID 2368 wrote to memory of 2984	2368	setup.exe	32
PID 2368 wrote to memory of 2984	2368	setup.exe	32
PID 2984 wrote to memory of 2360	2984	cmd.exe	35
PID 2984 wrote to memory of 2360	2984	cmd.exe	35
PID 2984 wrote to memory of 2360	2984	cmd.exe	35
PID 2180 wrote to memory of 2712	2180	cmd.exe	34
PID 2180 wrote to memory of 2712	2180	cmd.exe	34
PID 2180 wrote to memory of 2712	2180	cmd.exe	34
PID 2984 wrote to memory of 3008	2984	cmd.exe	36
PID 2984 wrote to memory of 3008	2984	cmd.exe	36
PID 2984 wrote to memory of 3008	2984	cmd.exe	36

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\setup.exe
"C:\Users\Admin\AppData\Local\Temp\setup.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "piskat" /tr '"C:\Users\Admin\AppData\Roaming\piskat.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2180
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "piskat" /tr '"C:\Users\Admin\AppData\Roaming\piskat.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2712
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp85B3.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2360
- - C:\Users\Admin\AppData\Roaming\piskat.exe
    "C:\Users\Admin\AppData\Roaming\piskat.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:3008

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\tmp85B3.tmp.bat

Filesize
150B

MD5
d66c4349440a67b304bc5bd76ff57ba0

SHA1
9d406f22f7cd3be02226078ae1cab183171cabbc

SHA256
4b875b4d513b17bec2d011c27070b6d8902d88fd495d56799fe3a2f95f5990f1

SHA512
e9dc3638fd583348a31d4b4251f9c521ffe6a5bb82127255db0ec28a87bf20e9b858c76432ef2ecb95551b0ff1f6a71d2c6d01fa5271f45bfa2f0865278070e4

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

Filesize
63KB

MD5
1b8eea1226cd913da97c0c0b8a806b18

SHA1
4320bde806e4fb5792be6bfb2e0b45ae30033fa0

SHA256
4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67

SHA512
70fca344d74efe3e1bf9268e36bd2aac698e69cde340559f5a0df603bf996d06f6b60920cf02ecf19c8532f6a6d6210a4c9ad54a61ddbf12541ae0cfee3da7f1

Download Submit
memory/2368-0-0x000007FEF57C3000-0x000007FEF57C4000-memory.dmp

Filesize
4KB

Download
memory/2368-1-0x0000000000350000-0x0000000000366000-memory.dmp

Filesize
88KB

Download
memory/2368-2-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/2368-3-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/2368-13-0x000007FEF57C0000-0x000007FEF61AC000-memory.dmp

Filesize
9.9MB

Download
memory/3008-17-0x0000000000250000-0x0000000000266000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads