asyncrat | 2f008e82dff5d835237221d923e390e7e8d32a3e77f7a417c2713601522738c1

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22-12-2024 04:32

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General

Target

APKYUPOKSJ09HJSA.exe
Size

300.0MB
MD5

4c831c9d698ae1c40d99156135de269d
SHA1

f8308ea93ea6b570d047a732c5ad4bc47e74c8a4
SHA256

d99baa8c9a2503d5f423797042bbde745379f275d174d009763d09b987edd9ba
SHA512

d8215059d6d9baa59da9f10d0c70bbb83e35de0e629ef04b6fa2602bf8c8541cd2dc11a88b9b4f37bc7dfdba8f026b2f8f1cba0b55a16f46d512286d00b1b27f
SSDEEP

3072:1Vb72u+TCMkA6o7UdwOI5AD9OKbTBOUEs64BRg40nPFblFTJ:nbqu+TsA6eUdTISx1PBUeBRgPlh

Score

10^/10

asyncrat venom clients discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT 5.0.4

Botnet

Venom Clients

bbiy00362.duckdns.org:6731

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

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
Asyncrat family
asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2044	yrtf.exe
1160	yrtf.exe

Loads dropped DLL 3 IoCs

pid	Process
2328	taskeng.exe
2328	taskeng.exe
2328	taskeng.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2708 set thread context of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2044 set thread context of 2444	2044	yrtf.exe	44

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2340	schtasks.exe
2632	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3004	RegAsm.exe
Token: SeDebugPrivilege	2444	RegAsm.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 1396	2708	APKYUPOKSJ09HJSA.exe	31
PID 2708 wrote to memory of 1396	2708	APKYUPOKSJ09HJSA.exe	31
PID 2708 wrote to memory of 1396	2708	APKYUPOKSJ09HJSA.exe	31
PID 2708 wrote to memory of 2552	2708	APKYUPOKSJ09HJSA.exe	33
PID 2708 wrote to memory of 2552	2708	APKYUPOKSJ09HJSA.exe	33
PID 2708 wrote to memory of 2552	2708	APKYUPOKSJ09HJSA.exe	33
PID 1396 wrote to memory of 2632	1396	cmd.exe	35
PID 1396 wrote to memory of 2632	1396	cmd.exe	35
PID 1396 wrote to memory of 2632	1396	cmd.exe	35
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2708 wrote to memory of 3004	2708	APKYUPOKSJ09HJSA.exe	36
PID 2328 wrote to memory of 2044	2328	taskeng.exe	38
PID 2328 wrote to memory of 2044	2328	taskeng.exe	38
PID 2328 wrote to memory of 2044	2328	taskeng.exe	38
PID 2044 wrote to memory of 2536	2044	yrtf.exe	39
PID 2044 wrote to memory of 2536	2044	yrtf.exe	39
PID 2044 wrote to memory of 2536	2044	yrtf.exe	39
PID 2044 wrote to memory of 2128	2044	yrtf.exe	41
PID 2044 wrote to memory of 2128	2044	yrtf.exe	41
PID 2044 wrote to memory of 2128	2044	yrtf.exe	41
PID 2536 wrote to memory of 2340	2536	cmd.exe	43
PID 2536 wrote to memory of 2340	2536	cmd.exe	43
PID 2536 wrote to memory of 2340	2536	cmd.exe	43
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2044 wrote to memory of 2444	2044	yrtf.exe	44
PID 2328 wrote to memory of 1160	2328	taskeng.exe	45
PID 2328 wrote to memory of 1160	2328	taskeng.exe	45
PID 2328 wrote to memory of 1160	2328	taskeng.exe	45

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\APKYUPOKSJ09HJSA.exe
"C:\Users\Admin\AppData\Local\Temp\APKYUPOKSJ09HJSA.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\yrtf.exe'" /f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1396
- - C:\Windows\system32\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\yrtf.exe'" /f
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2632
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\APKYUPOKSJ09HJSA.exe" "C:\Users\Admin\AppData\Roaming\yrtf.exe"
  2⤵
  PID:2552
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3004

C:\Windows\system32\taskeng.exe
taskeng.exe {42F643D3-6791-4227-965B-A37770B907C4} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2328
- C:\Users\Admin\AppData\Roaming\yrtf.exe
  C:\Users\Admin\AppData\Roaming\yrtf.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:2044
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\yrtf.exe'" /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2536
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /sc minute /mo 1 /tn "Nafdnasia" /tr "'C:\Users\Admin\AppData\Roaming\yrtf.exe'" /f
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2340
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C copy "C:\Users\Admin\AppData\Roaming\yrtf.exe" "C:\Users\Admin\AppData\Roaming\yrtf.exe"
    3⤵
    PID:2128
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2444
- C:\Users\Admin\AppData\Roaming\yrtf.exe
  C:\Users\Admin\AppData\Roaming\yrtf.exe
  2⤵
  - Executes dropped EXE
  PID:1160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1160-47-0x0000000000DD0000-0x0000000000DF4000-memory.dmp

Filesize
144KB

Download
memory/2044-25-0x00000000008B0000-0x00000000008D4000-memory.dmp

Filesize
144KB

Download
memory/2444-37-0x0000000000090000-0x00000000000A6000-memory.dmp

Filesize
88KB

Download
memory/2444-41-0x0000000000090000-0x00000000000A6000-memory.dmp

Filesize
88KB

Download
memory/2444-44-0x0000000000090000-0x00000000000A6000-memory.dmp

Filesize
88KB

Download
memory/2708-20-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2708-14-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2708-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/2708-2-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/2708-1-0x0000000001100000-0x0000000001124000-memory.dmp

Filesize
144KB

Download
memory/3004-7-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3004-5-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3004-15-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3004-19-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3004-17-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3004-9-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3004-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3004-11-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads