asyncrat | bc649a11850db40e2c753878c6ba390f8ea08c0e7fae4a9d4c44d470762cce53

General

Target

EKTEY03H.exe
Size

300.0MB
MD5

93e5b5997ba7511c9648a679d24070d8
SHA1

97c0a7b98c7fe0728bec01fee5f5d3c4d1b34f00
SHA256

b2c0e249df623b4562efe97278af7671b24e5a1736291200617b19239d871034
SHA512

469513cbe362e1eea9f316859fa149063cd45c44de89e715a13e9d0ce1aebdd46a46b96476c6ff169cee587013ed5c20d10cfac99ab8fbffb85e750dcd1e3d16
SSDEEP

3072:+g8JUq6cg5wCacuLf67MJQn4TK/5DrNeusK:zmUBcgCCLuuyc4TKBDrNeux

Score

10^/10

asyncrat venom clients discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT 5.0.5

Botnet

Venom Clients

C2

yedbopds.duckdns.org:9056

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 1 IoCs

pid	Process
1616	ubdfe.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3248 set thread context of 1508	3248	EKTEY03H.exe	95

System Location Discovery: System Language Discovery 1 TTPs 6 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ubdfe.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	EKTEY03H.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
5112	schtasks.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1508	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 3248 wrote to memory of 4844	3248	EKTEY03H.exe	90
PID 3248 wrote to memory of 4844	3248	EKTEY03H.exe	90
PID 3248 wrote to memory of 4844	3248	EKTEY03H.exe	90
PID 3248 wrote to memory of 2392	3248	EKTEY03H.exe	92
PID 3248 wrote to memory of 2392	3248	EKTEY03H.exe	92
PID 3248 wrote to memory of 2392	3248	EKTEY03H.exe	92
PID 4844 wrote to memory of 5112	4844	cmd.exe	94
PID 4844 wrote to memory of 5112	4844	cmd.exe	94
PID 4844 wrote to memory of 5112	4844	cmd.exe	94
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95
PID 3248 wrote to memory of 1508	3248	EKTEY03H.exe	95

C:\Users\Admin\AppData\Local\Temp\EKTEY03H.exe
"C:\Users\Admin\AppData\Local\Temp\EKTEY03H.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3248
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\ubdfe.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4844
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafdfnasia" /tr "'C:\Users\Admin\AppData\Roaming\ubdfe.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5112
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c copy "C:\Users\Admin\AppData\Local\Temp\EKTEY03H.exe" "C:\Users\Admin\AppData\Roaming\ubdfe.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2392
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1508

C:\Users\Admin\AppData\Roaming\ubdfe.exe
C:\Users\Admin\AppData\Roaming\ubdfe.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1508-12-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/1508-8-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1508-9-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/1508-13-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/1508-14-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/1508-15-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/3248-1-0x0000000000B90000-0x0000000000BB8000-memory.dmp

Filesize
160KB

Download
memory/3248-2-0x0000000005530000-0x0000000005596000-memory.dmp

Filesize
408KB

Download
memory/3248-3-0x00000000753BE000-0x00000000753BF000-memory.dmp

Filesize
4KB

Download
memory/3248-4-0x0000000005C60000-0x0000000006204000-memory.dmp

Filesize
5.6MB

Download
memory/3248-5-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/3248-11-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/3248-0-0x00000000753BE000-0x00000000753BF000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads