asyncrat | d08285f3f36f0c79df6d4cb82b9b045859d25c96a223c16702b6043ea8950f6e

General

Target

976833d491de30583479494fb8946ea7.exe
Size

5.3MB
MD5

976833d491de30583479494fb8946ea7
SHA1

a8b9321a3fbe582b029c2b35f439966211cba8a4
SHA256

d08285f3f36f0c79df6d4cb82b9b045859d25c96a223c16702b6043ea8950f6e
SHA512

bec2e86948eef70e9b64d01867aa3b3e2d5023bf56333052878fcd61b50cd7147a8a8b463a15bf165310ef7aeca57a2d5247ffd4b047f614d8f6c812eade7385
SSDEEP

98304:atLutWh4NYxtJpkxhG9vPLOqjajvD333yuhGRHW:vOxtJahydjaKu0W

Score

10^/10

asyncrat 18 discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

18

C2

nuevodcsrat.duckdns.org:8081

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-1-5-21-3063565911-2056067323-3330884624-1000\Software\Microsoft\Windows\CurrentVersion\Run\JudgeUpdater = "C:\\Users\\Admin\\Music\\JudgeUpdater\\EyesJudger.exe"	976833d491de30583479494fb8946ea7.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2128 set thread context of 2876	2128	976833d491de30583479494fb8946ea7.exe	30

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	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	976833d491de30583479494fb8946ea7.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2876	csc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2128 wrote to memory of 2876	2128	976833d491de30583479494fb8946ea7.exe	30
PID 2128 wrote to memory of 2876	2128	976833d491de30583479494fb8946ea7.exe	30
PID 2128 wrote to memory of 2876	2128	976833d491de30583479494fb8946ea7.exe	30
PID 2128 wrote to memory of 2876	2128	976833d491de30583479494fb8946ea7.exe	30
PID 2128 wrote to memory of 2876	2128	976833d491de30583479494fb8946ea7.exe	30
PID 2128 wrote to memory of 2876	2128	976833d491de30583479494fb8946ea7.exe	30

C:\Users\Admin\AppData\Local\Temp\976833d491de30583479494fb8946ea7.exe
"C:\Users\Admin\AppData\Local\Temp\976833d491de30583479494fb8946ea7.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2128
- 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:2876

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\CabC035.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2128-17-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2128-6-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2128-3-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2128-0-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2128-7-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2128-5-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2128-2-0x00000000005AD000-0x00000000005C5000-memory.dmp

Filesize
96KB

Download
memory/2128-21-0x00000000005AD000-0x00000000005C5000-memory.dmp

Filesize
96KB

Download
memory/2128-1-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2128-11-0x0000000000400000-0x0000000000968000-memory.dmp

Filesize
5.4MB

Download
memory/2876-13-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2876-15-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2876-8-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2876-18-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/2876-19-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download
memory/2876-10-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2876-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2876-38-0x000000007465E000-0x000000007465F000-memory.dmp

Filesize
4KB

Download
memory/2876-39-0x0000000074650000-0x0000000074D3E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads