asyncrat | a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8

Analysis

max time kernel
61s
max time network
63s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
17-12-2024 13:59

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General

Target

dcrat_heartcrypt.exe
Size

3.8MB
MD5

c011fd4c9d95dcf32b07d2a7b1087a9d
SHA1

9ecceb46f27af09cbaccb726481a27353b3dd960
SHA256

a74cc5cddbc77c63f202cc198442b0982c30a2e192b65f61fa9162278cb429b8
SHA512

15e336537c3f1c781f1e4f859e8b30488fcf176746a3d65466ecfdd1d56ff450544c660f8ab402ac0b03e30afbbbad522bac38393113564e81b8051bbd14e4dc
SSDEEP

98304:pyyMMwE+UlnIiV2GHJsqYGIhOLrppWsrBrA:prwPWIE2G2GXL1pr2

Score

10^/10

asyncrat feliz discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

FELIZ

octubre212024.giize.com:2727

fuertefuerte.accesscam.org:2727

octubre242024.casacam.net:2727

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-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NostraDesignerEditor = "C:\\Users\\Admin\\Music\\NostraDesignerUpdater\\NostraConvertVideo.exe"	dcrat_heartcrypt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2604 set thread context of 408	2604	dcrat_heartcrypt.exe	90

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

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2604 wrote to memory of 408	2604	dcrat_heartcrypt.exe	90
PID 2604 wrote to memory of 408	2604	dcrat_heartcrypt.exe	90
PID 2604 wrote to memory of 408	2604	dcrat_heartcrypt.exe	90
PID 2604 wrote to memory of 408	2604	dcrat_heartcrypt.exe	90
PID 2604 wrote to memory of 408	2604	dcrat_heartcrypt.exe	90

C:\Users\Admin\AppData\Local\Temp\dcrat_heartcrypt.exe
"C:\Users\Admin\AppData\Local\Temp\dcrat_heartcrypt.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2604
- 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:408

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/408-8-0x0000000000F60000-0x0000000000F72000-memory.dmp

Filesize
72KB

Download
memory/408-17-0x0000000073AE0000-0x0000000074290000-memory.dmp

Filesize
7.7MB

Download
memory/408-14-0x0000000073AE0000-0x0000000074290000-memory.dmp

Filesize
7.7MB

Download
memory/408-13-0x0000000073AEE000-0x0000000073AEF000-memory.dmp

Filesize
4KB

Download
memory/2604-9-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-7-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-0-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-3-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-6-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-12-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-4-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-1-0x0000000000400000-0x00000000007FE000-memory.dmp

Filesize
4.0MB

Download
memory/2604-16-0x0000000000513000-0x000000000052C000-memory.dmp

Filesize
100KB

Download
memory/2604-2-0x0000000000513000-0x000000000052C000-memory.dmp

Filesize
100KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads