asyncrat | 59ac6b70725a97f04ae106fa7f24c238bbfeacf34e87af40be8ed91a8bcd5d3a

Analysis

max time kernel
140s
max time network
156s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
26-07-2024 01:41

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General

Target

21bf3c8f22597853b3b74da6a5063a68.exe
Size

10.0MB
MD5

21bf3c8f22597853b3b74da6a5063a68
SHA1

df0f9cd633197d9f6b5ce24e19d1f558f802d94f
SHA256

59ac6b70725a97f04ae106fa7f24c238bbfeacf34e87af40be8ed91a8bcd5d3a
SHA512

a327ee1325a190552cd2b92129337db5bc8d5d6e8d7c8079a532e33829eb71a953dad0e3eb0a39c4fc5d31a3596971bbeab1aa857fc23b39eb1d7043a3bd55dd
SSDEEP

49152:cBhZayP3pgXWFVeVpPsQgw5stv/JWu/ALmVk+j4UUbIwL/+NkVxT4BVZvutzlsjv:c1ZFVeVpUn

Score

10^/10

asyncrat mercenarios-oro discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

MERCENARIOS-ORO

proyectoxman1.casacam.net:8010

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

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-1-5-21-2212144002-1172735686-1556890956-1000\Software\Microsoft\Windows\CurrentVersion\Run\Niiiiuttu = "C:\\Users\\Admin\\Documents\\Ounsa\\CoxcoxUpdater.exe"	21bf3c8f22597853b3b74da6a5063a68.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 2792	2924	21bf3c8f22597853b3b74da6a5063a68.exe	29

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	21bf3c8f22597853b3b74da6a5063a68.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2924 wrote to memory of 2792	2924	21bf3c8f22597853b3b74da6a5063a68.exe	29
PID 2924 wrote to memory of 2792	2924	21bf3c8f22597853b3b74da6a5063a68.exe	29
PID 2924 wrote to memory of 2792	2924	21bf3c8f22597853b3b74da6a5063a68.exe	29
PID 2924 wrote to memory of 2792	2924	21bf3c8f22597853b3b74da6a5063a68.exe	29
PID 2924 wrote to memory of 2792	2924	21bf3c8f22597853b3b74da6a5063a68.exe	29
PID 2924 wrote to memory of 2792	2924	21bf3c8f22597853b3b74da6a5063a68.exe	29

C:\Users\Admin\AppData\Local\Temp\21bf3c8f22597853b3b74da6a5063a68.exe
"C:\Users\Admin\AppData\Local\Temp\21bf3c8f22597853b3b74da6a5063a68.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2924
- 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
  PID:2792

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/2792-12-0x0000000073B2E000-0x0000000073B2F000-memory.dmp

Filesize
4KB

Download
memory/2792-15-0x0000000073B20000-0x000000007420E000-memory.dmp

Filesize
6.9MB

Download
memory/2792-14-0x0000000073B2E000-0x0000000073B2F000-memory.dmp

Filesize
4KB

Download
memory/2792-13-0x0000000073B20000-0x000000007420E000-memory.dmp

Filesize
6.9MB

Download
memory/2792-5-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2792-4-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2792-6-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2792-10-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2792-8-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2924-3-0x0000000000400000-0x00000000005EB000-memory.dmp

Filesize
1.9MB

Download
memory/2924-11-0x0000000000400000-0x00000000005EB000-memory.dmp

Filesize
1.9MB

Download
memory/2924-0-0x0000000000400000-0x00000000005EB000-memory.dmp

Filesize
1.9MB

Download
memory/2924-2-0x0000000000400000-0x00000000005EB000-memory.dmp

Filesize
1.9MB

Download
memory/2924-1-0x0000000000407000-0x0000000000421000-memory.dmp

Filesize
104KB

Download

Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads