asyncrat | 4fc5bc8679e046420ac7516d7a89080ba8ffd20fb7ebcc5dc6969f1df1a8a73a

General

Target

Miaou.exe
Size

393KB
MD5

ee858fa2a033e24c1fe66d5e6ac2ce8b
SHA1

c175a36ae75fed25ffd804f998ad073805300c42
SHA256

4fc5bc8679e046420ac7516d7a89080ba8ffd20fb7ebcc5dc6969f1df1a8a73a
SHA512

463ba7bba6b00bc7423017b5c01252adc957fb9bd360e6c375eeb6e61ff7f601e944c18625f7b5f768a6f2867609cd2eb06c134ac07cefe7d4275ba6cc853a16
SSDEEP

6144:a9Y5cOjYmp740NLXAY2zNivF7GlmOh/SHYy1bfV89YDwc/7GN7RVvjJbDs:a9Y5cifNLF2xivQ2DB/7yDtbDs

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

alainlegrosper.ddns.net:6606

Mutex

sgXgvLmJ6SR3

Attributes

delay
3
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2856 set thread context of 3068	2856	Miaou.exe	32

System Location Discovery: System Language Discovery 1 TTPs 1 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	regsvcs.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3068	regsvcs.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2856 wrote to memory of 2744	2856	Miaou.exe	31
PID 2856 wrote to memory of 2744	2856	Miaou.exe	31
PID 2856 wrote to memory of 2744	2856	Miaou.exe	31
PID 2856 wrote to memory of 2744	2856	Miaou.exe	31
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 3068	2856	Miaou.exe	32
PID 2856 wrote to memory of 2616	2856	Miaou.exe	33
PID 2856 wrote to memory of 2616	2856	Miaou.exe	33
PID 2856 wrote to memory of 2616	2856	Miaou.exe	33

C:\Users\Admin\AppData\Local\Temp\Miaou.exe
"C:\Users\Admin\AppData\Local\Temp\Miaou.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2856
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\msbuild.exe"
  2⤵
  PID:2744
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3068
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 2856 -s 636
  2⤵
  PID:2616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab7976.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
memory/2856-0-0x000007FEF5143000-0x000007FEF5144000-memory.dmp

Filesize
4KB

Download
memory/2856-1-0x0000000000AD0000-0x0000000000B36000-memory.dmp

Filesize
408KB

Download
memory/2856-2-0x0000000000580000-0x00000000005E4000-memory.dmp

Filesize
400KB

Download
memory/2856-3-0x000007FEF5140000-0x000007FEF5B2C000-memory.dmp

Filesize
9.9MB

Download
memory/2856-36-0x000007FEF5140000-0x000007FEF5B2C000-memory.dmp

Filesize
9.9MB

Download
memory/3068-8-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3068-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3068-17-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3068-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3068-10-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3068-4-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3068-18-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

Filesize
4KB

Download
memory/3068-19-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download
memory/3068-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3068-6-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3068-37-0x0000000073FFE000-0x0000000073FFF000-memory.dmp

Filesize
4KB

Download
memory/3068-38-0x0000000073FF0000-0x00000000746DE000-memory.dmp

Filesize
6.9MB

Download

Analysis

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