asyncrat | 682a3a8e439b5c9d4f563eab109fb26bbeec146a5e2ed94956b8609fe8b7fd91

Analysis

max time kernel
117s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
11/05/2023, 18:44

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General

Target

19b1dc02146d5358c01094863b9e1c39.exe
Size

584KB
MD5

19b1dc02146d5358c01094863b9e1c39
SHA1

dafb8945aa60b3e609ee0eb55793a1ac46c51d24
SHA256

682a3a8e439b5c9d4f563eab109fb26bbeec146a5e2ed94956b8609fe8b7fd91
SHA512

7521d7f7259bc82fedd5af3aebf5ee57d28719d7b89d095c12333492eb229847f16e13d06032a072c763eaf0d32c9b444be5c79af78e3a3cc45e91d48ccf3cdf
SSDEEP

12288:6byb2Zi0Uyz4DNsiV5P9dQfObqPpQYUcx08BBq:6ut04NsiVRPQfObqR7vx9Bq

Score

10^/10

asyncrat loads persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Loads

84.54.50.51:8848

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
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/memory/3568-141-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\Software\Microsoft\Windows\CurrentVersion\Run	19b1dc02146d5358c01094863b9e1c39.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-144354903-2550862337-1367551827-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SysWOW = "C:\\Users\\Admin\\AppData\\Roaming\\SysWOW\\SysWOW64.exe.exe"	19b1dc02146d5358c01094863b9e1c39.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3660 set thread context of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3568	RegSvcs.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3660	19b1dc02146d5358c01094863b9e1c39.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3660 wrote to memory of 2544	3660	19b1dc02146d5358c01094863b9e1c39.exe	84
PID 3660 wrote to memory of 2544	3660	19b1dc02146d5358c01094863b9e1c39.exe	84
PID 3660 wrote to memory of 2544	3660	19b1dc02146d5358c01094863b9e1c39.exe	84
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85
PID 3660 wrote to memory of 3568	3660	19b1dc02146d5358c01094863b9e1c39.exe	85

C:\Users\Admin\AppData\Local\Temp\19b1dc02146d5358c01094863b9e1c39.exe
"C:\Users\Admin\AppData\Local\Temp\19b1dc02146d5358c01094863b9e1c39.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:2544
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3568

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Web Service

T1102

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

memory/3568-141-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3568-142-0x00000000054D0000-0x00000000054E0000-memory.dmp

Filesize
64KB

Download
memory/3568-143-0x0000000005B40000-0x0000000005BDC000-memory.dmp

Filesize
624KB

Download
memory/3568-144-0x0000000006190000-0x0000000006734000-memory.dmp

Filesize
5.6MB

Download
memory/3568-145-0x0000000005C50000-0x0000000005CB6000-memory.dmp

Filesize
408KB

Download
memory/3568-146-0x00000000054D0000-0x00000000054E0000-memory.dmp

Filesize
64KB

Download