asyncrat | 4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67

General

Target
4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
Size 63KB
Sample240731-sqd8aazfjl
SHA256 4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67
MD5 1b8eea1226cd913da97c0c0b8a806b18
SHA1 4320bde806e4fb5792be6bfb2e0b45ae30033fa0
SHA512 70fca344d74efe3e1bf9268e36bd2aac698e69cde340559f5a0df603bf996d06f6b60920cf02ecf19c8532f6a6d6210a4c9ad54a61ddbf12541ae0cfee3da7f1
SSDEEP 1536:zZgPH9F4s1THE6HTIiTEulumGbb+wAe+EhGG0kpqKmY7:zZgPH9F4sBHLTIiTnGbb+xmuvz
MD5 SHA1 SHA512 SSDEEP

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
behavioral2/files/0x000b0000000233ab-10.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-807826884-2440573969-3755798217-1000\Control Panel\International\Geo\Nation	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe

Executes dropped EXE 1 IoCs

pid	Process
5032	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
3176	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
2484	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
Token: SeDebugPrivilege	5032	piskat.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4524 wrote to memory of 4844	4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe	86
PID 4524 wrote to memory of 4844	4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe	86
PID 4524 wrote to memory of 4412	4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe	88
PID 4524 wrote to memory of 4412	4524	4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe	88
PID 4844 wrote to memory of 2484	4844	cmd.exe	90
PID 4844 wrote to memory of 2484	4844	cmd.exe	90
PID 4412 wrote to memory of 3176	4412	cmd.exe	91
PID 4412 wrote to memory of 3176	4412	cmd.exe	91
PID 4412 wrote to memory of 5032	4412	cmd.exe	92
PID 4412 wrote to memory of 5032	4412	cmd.exe	92

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\4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe
"C:\Users\Admin\AppData\Local\Temp\4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4524
- 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:4844
- - 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:2484
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAD57.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4412
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:3176
- - C:\Users\Admin\AppData\Roaming\piskat.exe
    "C:\Users\Admin\AppData\Roaming\piskat.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:5032

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

tmpAD57.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpAD57.tmp.bat
Size 150B
SHA256 56bd5879b539e5c9c18f27660f5782118310bf1c195126d24a11c33fb7565aa3
MD5 caede1d521ca2930762c6d5ccc12737c
SHA1 5c2eddb24be50f25dd8c3af0347cfd9e81689607
SHA512 7775b34e02e4daccad36b1933fd40759405eeefdda15942769f5a84a412d7f9fafca5361f16bcbd6fb03027e62af1e6010f954a53fb85b4386a8a7288b389531
MD5 SHA1 SHA512

Submit Download

piskat.exe

Path C:\Users\Admin\AppData\Roaming\piskat.exe
Size 63KB
SHA256 4476d0eb2a47cb9bfe3155abf0a1603de727dd127f4df099b344df56c22c0d67
MD5 1b8eea1226cd913da97c0c0b8a806b18
SHA1 4320bde806e4fb5792be6bfb2e0b45ae30033fa0
SHA512 70fca344d74efe3e1bf9268e36bd2aac698e69cde340559f5a0df603bf996d06f6b60920cf02ecf19c8532f6a6d6210a4c9ad54a61ddbf12541ae0cfee3da7f1
SSDEEP 1536:zZgPH9F4s1THE6HTIiTEulumGbb+wAe+EhGG0kpqKmY7:zZgPH9F4sBHLTIiTnGbb+xmuvz
MD5 SHA1 SHA512 SSDEEP

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads