asyncrat | 86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8

Analysis

max time kernel
143s
max time network
16s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
06/08/2024, 01:59

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General

Target

86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
Size

579KB
MD5

ff231cb9ee1f4cf6b2ebe3a801c3f110
SHA1

7e79faf8a53e28a504a0f0580f4a07afaafa1c8c
SHA256

86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8
SHA512

14f446b19e2762260a008a5f54c57eeea9e10390e633c2aaa871af66defadb101171020486019c6a83e2d68ac593754d6ea481d751de73a9902741296abaeba3
SSDEEP

12288:Z5lzFAlgrVwZaeTgvp4oSUMqK0Q4Atm+AFL:ZFDwgh47U6Ti1

Score

10^/10

asyncrat amu discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

AMU

many.ydns.eu:1407

Mutex

p7id6nh2jIqW

Attributes

delay
10
install
true
install_file
windows.exe
install_folder
%Temp%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Drops startup file 3 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.exe	cmd.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.exe	cmd.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.lnk	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe

Executes dropped EXE 1 IoCs

pid	Process
1600	file.exe

Loads dropped DLL 2 IoCs

pid	Process
2868	cmd.exe
2868	cmd.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	file.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 3 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2868	cmd.exe
2624	PING.EXE
1128	PING.EXE

Runs ping.exe 1 TTPs 2 IoCs

Remote System Discovery

T1018

pid	Process
2624	PING.EXE
1128	PING.EXE

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
1600	file.exe
1600	file.exe
1600	file.exe
1600	file.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
Token: SeDebugPrivilege	1600	file.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 2868	2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe	29
PID 2528 wrote to memory of 2868	2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe	29
PID 2528 wrote to memory of 2868	2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe	29
PID 2528 wrote to memory of 2868	2528	86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe	29
PID 2868 wrote to memory of 2624	2868	cmd.exe	31
PID 2868 wrote to memory of 2624	2868	cmd.exe	31
PID 2868 wrote to memory of 2624	2868	cmd.exe	31
PID 2868 wrote to memory of 2624	2868	cmd.exe	31
PID 2868 wrote to memory of 1128	2868	cmd.exe	32
PID 2868 wrote to memory of 1128	2868	cmd.exe	32
PID 2868 wrote to memory of 1128	2868	cmd.exe	32
PID 2868 wrote to memory of 1128	2868	cmd.exe	32
PID 2868 wrote to memory of 1600	2868	cmd.exe	33
PID 2868 wrote to memory of 1600	2868	cmd.exe	33
PID 2868 wrote to memory of 1600	2868	cmd.exe	33
PID 2868 wrote to memory of 1600	2868	cmd.exe	33
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34
PID 1600 wrote to memory of 1208	1600	file.exe	34

C:\Users\Admin\AppData\Local\Temp\86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe
"C:\Users\Admin\AppData\Local\Temp\86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe"
1⤵
- Drops startup file
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 41 > nul && copy "C:\Users\Admin\AppData\Local\Temp\86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.exe" && ping 127.0.0.1 -n 41 > nul && "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.exe"
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2868
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 41
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2624
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 41
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:1128
- - C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1600
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      4⤵
      PID:1208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\file.exe

Filesize
579KB

MD5
ff231cb9ee1f4cf6b2ebe3a801c3f110

SHA1
7e79faf8a53e28a504a0f0580f4a07afaafa1c8c

SHA256
86387e96355ec40517155830240239f4b44cf4ded5cdf2aea5366abe900245b8

SHA512
14f446b19e2762260a008a5f54c57eeea9e10390e633c2aaa871af66defadb101171020486019c6a83e2d68ac593754d6ea481d751de73a9902741296abaeba3

Download Submit
memory/1208-29-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1208-25-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1208-27-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1208-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1208-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1600-18-0x0000000001000000-0x0000000001098000-memory.dmp

Filesize
608KB

Download
memory/1600-17-0x000000007395E000-0x000000007395F000-memory.dmp

Filesize
4KB

Download
memory/1600-19-0x0000000000D50000-0x0000000000D6A000-memory.dmp

Filesize
104KB

Download
memory/1600-20-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2528-0-0x00000000747AE000-0x00000000747AF000-memory.dmp

Filesize
4KB

Download
memory/2528-6-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-5-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-3-0x00000000007A0000-0x00000000007E4000-memory.dmp

Filesize
272KB

Download
memory/2528-2-0x00000000747A0000-0x0000000074E8E000-memory.dmp

Filesize
6.9MB

Download
memory/2528-1-0x0000000000850000-0x00000000008E8000-memory.dmp

Filesize
608KB

Download