asyncrat | 3ea96b543a3d800b4a0153508871ed1c1941c43f4db0186c099e1ac76b35371b

General

Target

Client.exe
Size

47KB
MD5

9e48f4bb5a7ed00f52dddbd9326fb3c6
SHA1

29af113bb33d2c81b8afc0d43e0916fd397266a5
SHA256

3ea96b543a3d800b4a0153508871ed1c1941c43f4db0186c099e1ac76b35371b
SHA512

39c708feee6a470eafd09dee7fffec804f17583d90e91b0a29cfbfdb58ea973070e4e296e348fa4dbb919871538574cf3ac2d934c79c48b0afd5c4135d3efe36
SSDEEP

768:6u1a21T3EiJfWUzuydmo2qzQmtFbwl9iPIFOxTTXj0bcR47uNDFcEZCsrO/wBDZe:6u1a21T3xN2CclVFOxvYbcR4qNDFciCl

Score

10^/10

asyncrat dahood discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

DaHood

C2

ny-case.gl.at.ply.gg:000

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
Dahood.exe
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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/files/0x0012000000023aac-11.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

Client.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	Client.exe

Executes dropped EXE 1 IoCs

Processes:

Dahood.exe

pid	Process
4424	Dahood.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 6 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

Processes:

cmd.execmd.exeschtasks.exetimeout.exeDahood.exeClient.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Dahood.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Client.exe

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
3808	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

Processes:

schtasks.exe

pid	Process
3708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

Client.exe

pid	Process
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe
2212	Client.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Client.exeDahood.exe

description	pid	Process
Token: SeDebugPrivilege	2212	Client.exe
Token: SeDebugPrivilege	4424	Dahood.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Client.execmd.execmd.exe

description	pid	Process	procid_target
PID 2212 wrote to memory of 2240	2212	Client.exe	91
PID 2212 wrote to memory of 2240	2212	Client.exe	91
PID 2212 wrote to memory of 2240	2212	Client.exe	91
PID 2212 wrote to memory of 2392	2212	Client.exe	93
PID 2212 wrote to memory of 2392	2212	Client.exe	93
PID 2212 wrote to memory of 2392	2212	Client.exe	93
PID 2240 wrote to memory of 3708	2240	cmd.exe	95
PID 2240 wrote to memory of 3708	2240	cmd.exe	95
PID 2240 wrote to memory of 3708	2240	cmd.exe	95
PID 2392 wrote to memory of 3808	2392	cmd.exe	96
PID 2392 wrote to memory of 3808	2392	cmd.exe	96
PID 2392 wrote to memory of 3808	2392	cmd.exe	96
PID 2392 wrote to memory of 4424	2392	cmd.exe	98
PID 2392 wrote to memory of 4424	2392	cmd.exe	98
PID 2392 wrote to memory of 4424	2392	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\Client.exe
"C:\Users\Admin\AppData\Local\Temp\Client.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Dahood" /tr '"C:\Users\Admin\AppData\Roaming\Dahood.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2240
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Dahood" /tr '"C:\Users\Admin\AppData\Roaming\Dahood.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3708
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8C52.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2392
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3808
- - C:\Users\Admin\AppData\Roaming\Dahood.exe
    "C:\Users\Admin\AppData\Roaming\Dahood.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4424

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp8C52.tmp.bat

Filesize
150B

MD5
68e10728683bf1a949ba80cdb535a24b

SHA1
87f62ea718b7fcba0a9031e81948012f38b3900e

SHA256
af791b0a5cff7e8ec1292d6e6381a48fc397639474b5aacee804a4244cdab958

SHA512
90b50d25d2585e9d963472bb0907829cdedccd64f36d84cefb1c65e5086265f2fe96f1a3e4bd6b7c534c8b29de6a7adc213ec386d45ba4637101e7767515e19e

Download Submit
C:\Users\Admin\AppData\Roaming\Dahood.exe

Filesize
47KB

MD5
9e48f4bb5a7ed00f52dddbd9326fb3c6

SHA1
29af113bb33d2c81b8afc0d43e0916fd397266a5

SHA256
3ea96b543a3d800b4a0153508871ed1c1941c43f4db0186c099e1ac76b35371b

SHA512
39c708feee6a470eafd09dee7fffec804f17583d90e91b0a29cfbfdb58ea973070e4e296e348fa4dbb919871538574cf3ac2d934c79c48b0afd5c4135d3efe36

Download Submit
memory/2212-0-0x00000000752BE000-0x00000000752BF000-memory.dmp

Filesize
4KB

Download
memory/2212-1-0x0000000000A30000-0x0000000000A42000-memory.dmp

Filesize
72KB

Download
memory/2212-2-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/2212-3-0x0000000005440000-0x00000000054DC000-memory.dmp

Filesize
624KB

Download
memory/2212-8-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4424-13-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download
memory/4424-14-0x00000000752B0000-0x0000000075A60000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads