asyncrat | f323b5b0eae72fea64467cc0cc66af93aedac7a524246b7014ef63b50e325ff7

General

Target

TONDDOS.exe
Size

75KB
MD5

06eaec3a5cb7252e97abd37ddf54197f
SHA1

74e6a469391440d9ac7d1adc9441da069d9cfc44
SHA256

f323b5b0eae72fea64467cc0cc66af93aedac7a524246b7014ef63b50e325ff7
SHA512

514522a7284dcec3a7f8c57370c05086ad0852f63937b39ef0800d8180a978539afb4047e8c064ec4455030ddbe2b8fc1d95b053e2b729e8569425900783a66f
SSDEEP

1536:Tu2z1T1y52I40FvL5AbnfxOv0qid0d825Zw9:Tu2xT1y52I40FvebnUvhid0tHw9

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
launcher1.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/xaLN0L9h

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0008000000012115-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2968	launcher1.exe

Loads dropped DLL 1 IoCs

pid	Process
2816	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 5 IoCs

Web Service

T1102

flow	ioc
3	pastebin.com
4	4.tcp.ngrok.io
13	4.tcp.ngrok.io
19	4.tcp.ngrok.io
2	pastebin.com

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

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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	launcher1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TONDDOS.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2524	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

pid	Process
2536	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2668	TONDDOS.exe
2668	TONDDOS.exe
2668	TONDDOS.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2668	TONDDOS.exe
Token: SeDebugPrivilege	2968	launcher1.exe
Token: SeDebugPrivilege	2968	launcher1.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2668 wrote to memory of 2784	2668	TONDDOS.exe	31
PID 2668 wrote to memory of 2784	2668	TONDDOS.exe	31
PID 2668 wrote to memory of 2784	2668	TONDDOS.exe	31
PID 2668 wrote to memory of 2784	2668	TONDDOS.exe	31
PID 2668 wrote to memory of 2816	2668	TONDDOS.exe	33
PID 2668 wrote to memory of 2816	2668	TONDDOS.exe	33
PID 2668 wrote to memory of 2816	2668	TONDDOS.exe	33
PID 2668 wrote to memory of 2816	2668	TONDDOS.exe	33
PID 2816 wrote to memory of 2524	2816	cmd.exe	35
PID 2816 wrote to memory of 2524	2816	cmd.exe	35
PID 2816 wrote to memory of 2524	2816	cmd.exe	35
PID 2816 wrote to memory of 2524	2816	cmd.exe	35
PID 2784 wrote to memory of 2536	2784	cmd.exe	36
PID 2784 wrote to memory of 2536	2784	cmd.exe	36
PID 2784 wrote to memory of 2536	2784	cmd.exe	36
PID 2784 wrote to memory of 2536	2784	cmd.exe	36
PID 2816 wrote to memory of 2968	2816	cmd.exe	37
PID 2816 wrote to memory of 2968	2816	cmd.exe	37
PID 2816 wrote to memory of 2968	2816	cmd.exe	37
PID 2816 wrote to memory of 2968	2816	cmd.exe	37
PID 2816 wrote to memory of 2968	2816	cmd.exe	37
PID 2816 wrote to memory of 2968	2816	cmd.exe	37
PID 2816 wrote to memory of 2968	2816	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\TONDDOS.exe
"C:\Users\Admin\AppData\Local\Temp\TONDDOS.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2668
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "launcher1" /tr '"C:\Users\Admin\AppData\Roaming\launcher1.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "launcher1" /tr '"C:\Users\Admin\AppData\Roaming\launcher1.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2536
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp1E4.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2816
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2524
- - C:\Users\Admin\AppData\Roaming\launcher1.exe
    "C:\Users\Admin\AppData\Roaming\launcher1.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2968

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp1E4.tmp.bat

Filesize
152B

MD5
5b16e48e71df88e9a2ef845793399267

SHA1
159885807c7ca25f1e931cc235ae817fce3e3b30

SHA256
3d46600abc89ac15191f3256bdb187d624ed30277ef685dc5c9216f012e368fd

SHA512
79bd57e3bf0755405714d0a1ae0d35707bd7df5fd6843c5d54e99dbf0671ea0a7dd1593e3fe5fd3c206a80ce8e37602224e31009cf118001eb6d096808f44780

Download Submit
\Users\Admin\AppData\Roaming\launcher1.exe

Filesize
75KB

MD5
06eaec3a5cb7252e97abd37ddf54197f

SHA1
74e6a469391440d9ac7d1adc9441da069d9cfc44

SHA256
f323b5b0eae72fea64467cc0cc66af93aedac7a524246b7014ef63b50e325ff7

SHA512
514522a7284dcec3a7f8c57370c05086ad0852f63937b39ef0800d8180a978539afb4047e8c064ec4455030ddbe2b8fc1d95b053e2b729e8569425900783a66f

Download Submit
memory/2668-0-0x000000007448E000-0x000000007448F000-memory.dmp

Filesize
4KB

Download
memory/2668-1-0x0000000000D90000-0x0000000000DA8000-memory.dmp

Filesize
96KB

Download
memory/2668-2-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2668-12-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/2968-16-0x0000000000A20000-0x0000000000A38000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads