asyncrat | b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9

Analysis

max time kernel
91s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-12-2024 14:09

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General

Target

b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe
Size

2.0MB
MD5

1cdf2a762372824d3929991bf7202641
SHA1

acd4fb724ffae7c5d91274b896d603b675acd16b
SHA256

b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9
SHA512

8ae56f16cc52cb12c6bf392ddc54a1170db242ba729a84398734530f4f7bb72e401dcb18153e4427f766c169352cbe64c83a830e1c2662689c6604717a7e02e9
SSDEEP

12288:Rd5xfIau24NrisiwzRe2nxg0v0h4/6SjXP1BWy9sFRJOxh7OmM8zALgR/ryFUvhi:j48sVi6fzl9Nxh7OmM8EH2vgL

Score

10^/10

asyncrat dicembrinos09 discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Dicembrinos09

inicioperiodo06.casacam.net:8854

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
Asyncrat family
asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\OrionLegacyCLI = "C:\\Users\\Admin\\Videos\\OrionLegacy\\Bin\\OrionLegacyCLI.exe"	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4044 set thread context of 4740	4044	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	89

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	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4740	csc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 4044 wrote to memory of 4740	4044	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	89
PID 4044 wrote to memory of 4740	4044	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	89
PID 4044 wrote to memory of 4740	4044	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	89
PID 4044 wrote to memory of 4740	4044	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	89
PID 4044 wrote to memory of 4740	4044	b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe	89

C:\Users\Admin\AppData\Local\Temp\b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe
"C:\Users\Admin\AppData\Local\Temp\b4c6596d0771b7327b61f11954a32b0638cecd535ce9be43ce01538f491212c9.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4044
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4044-0-0x0000000000439000-0x000000000043D000-memory.dmp

Filesize
16KB

Download
memory/4044-1-0x0000000000400000-0x00000000005FE000-memory.dmp

Filesize
2.0MB

Download
memory/4740-2-0x0000000000E50000-0x0000000000E62000-memory.dmp

Filesize
72KB

Download
memory/4740-3-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/4740-4-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4740-7-0x0000000005D20000-0x0000000005DBC000-memory.dmp

Filesize
624KB

Download
memory/4740-8-0x0000000006370000-0x0000000006914000-memory.dmp

Filesize
5.6MB

Download
memory/4740-9-0x0000000005DC0000-0x0000000005E26000-memory.dmp

Filesize
408KB

Download
memory/4740-10-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4740-11-0x000000007450E000-0x000000007450F000-memory.dmp

Filesize
4KB

Download
memory/4740-12-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download
memory/4740-13-0x0000000074500000-0x0000000074CB0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads