asyncrat | eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351

General

Target
eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
Size 45KB
Sample260601-nw3evact9k
SHA256 eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351
MD5 6a7783f6f0de752e0dbd444afaf54d63
SHA1 0da44e91e4ee559be8923cdf1b6b5bbc7a55276d
SHA512 cf69e4f7663a333a75c777973c8707147c3f42e42c943e6e82996864aab40f7be55261a3f0dfb953ce08bdeb9dc33dd5f4fd1e3d322e8f826e2af4a3cd978189
SSDEEP 768:RuxBJTVmU5EkWUGMKSmo2q1kw0QbKXPI1zjbbgX3iLeucGmpOsENAg+PnBDZcx:RuxBJTgip25813bkXSL/nYmNArBdcx
TLSH
T11F232B003BE98237F2BE4F789CF26145857AF2636603D5496CC452DB1B23FC68A426F9
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

default defense_evasion discovery execution asyncrat persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

lauxanh69.com:443
lauxanh69.com:80
lauxanh69.com:7797
lauxanh69.com:8707
lauxanh69.com:6620
www.lauxanh69.com:443
www.lauxanh69.com:80
www.lauxanh69.com:7797
www.lauxanh69.com:8707
www.lauxanh69.com:6620
codered.lauxanh69.com:443
codered.lauxanh69.com:80
codered.lauxanh69.com:7797
codered.lauxanh69.com:8707
codered.lauxanh69.com:6620
mirai.lauxanh69.com:443
mirai.lauxanh69.com:80
mirai.lauxanh69.com:7797
mirai.lauxanh69.com:8707
mirai.lauxanh69.com:6620
agenttesla.lauxanh69.com:443
agenttesla.lauxanh69.com:80
agenttesla.lauxanh69.com:7797
agenttesla.lauxanh69.com:8707
agenttesla.lauxanh69.com:6620
malware.lauxanh69.com:443
malware.lauxanh69.com:80
malware.lauxanh69.com:7797
malware.lauxanh69.com:8707
malware.lauxanh69.com:6620

Mutex

zewLNl0RHqNd

Attributes

delay
0
install
true
install_file
d19t4l63.exe
install_folder
%AppData%

aes.plain

Signatures

Family: 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
behavioral2/files/0x001b00000002b3f2-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
4376	d19t4l63.exe
3768	d19t4l63.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 7 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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d19t4l63.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	d19t4l63.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
3804	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
3708	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
Token: SeDebugPrivilege	4376	d19t4l63.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 1088	2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe	81
PID 2396 wrote to memory of 1524	2396	eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe	82
PID 1088 wrote to memory of 3708	1088	cmd.exe	85
PID 1524 wrote to memory of 3804	1524	cmd.exe	86
PID 1524 wrote to memory of 3768	1524	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe
"C:\Users\Admin\AppData\Local\Temp\eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "d19t4l63" /tr '"C:\Users\Admin\AppData\Roaming\d19t4l63.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1088
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "d19t4l63" /tr '"C:\Users\Admin\AppData\Roaming\d19t4l63.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\tmp17B9.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1524
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3804
- - C:\Users\Admin\AppData\Roaming\d19t4l63.exe
    "C:\Users\Admin\AppData\Roaming\d19t4l63.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:3768

C:\Users\Admin\AppData\Roaming\d19t4l63.exe
"C:\Users\Admin\AppData\Roaming\d19t4l63.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4376

Network

MITRE ATT&CK Enterprise v16

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

Exfiltration

Impact

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Downloads

tmp17B9.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp17B9.tmp.bat
Size 152B
SHA256 8b8a64389773da1db793f82b83bb2777e4b455576bf2ac9f1a8be5cc955b28d0
MD5 f2e62fea3c926b01357d9cba7f90f31a
SHA1 852c4646e2f6112b93b2185daa8c719d9c814e13
SHA512 e35d65c0ec7d2be8bcca02d947b84c73cfffd82fa45d185af648366b2c1fd0eedb4f8c6a5ca604c8f501bd88c5a61aab4fe18df1febab290d83415cc4ce562fd
TLSH
T19DC08CA256C6AA0E3809541302BA958C91A2686D3E80AF20C70445591281458F099286
MD5 SHA1 SHA512 TLSH

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d19t4l63.exe

Path C:\Users\Admin\AppData\Roaming\d19t4l63.exe
Size 45KB
SHA256 eabd1b260f16f9ed9509c68662d330940581cad2545e2013900c185365812351
MD5 6a7783f6f0de752e0dbd444afaf54d63
SHA1 0da44e91e4ee559be8923cdf1b6b5bbc7a55276d
SHA512 cf69e4f7663a333a75c777973c8707147c3f42e42c943e6e82996864aab40f7be55261a3f0dfb953ce08bdeb9dc33dd5f4fd1e3d322e8f826e2af4a3cd978189
SSDEEP 768:RuxBJTVmU5EkWUGMKSmo2q1kw0QbKXPI1zjbbgX3iLeucGmpOsENAg+PnBDZcx:RuxBJTgip25813bkXSL/nYmNArBdcx
TLSH
T11F232B003BE98237F2BE4F789CF26145857AF2636603D5496CC452DB1B23FC68A426F9
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2396-0-0x0000000000280000-0x0000000000292000-memory.dmp

Download

memory/2396-1-0x0000000004CA0000-0x0000000004CB0000-memory.dmp

Download

memory/2396-2-0x0000000004BD0000-0x0000000004C6C000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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