asyncrat | ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4

General

Target
ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
Size 45KB
Sample260531-xrmy2aev7x
SHA256 ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4
MD5 4c55d1c0a627a8b565769f764264b585
SHA1 53c76ba78b51b6648cf3de531366edde66d75b73
SHA512 1fb9d5704b036d255b42b11a8b61f73aad6dcc226024f3023612da5e0e94aa2e70983559d7d957bfd63d9f7b1ec266fe86ec880cfb245d9122518b314884314b
SSDEEP 768:cu6Ra7pTPYzbs8WU+Xaamo2q1n+GtnVnJtHuPIWzjbKgX3i6GWGlt5ETjN7ryyWz:cu6Y7pTPso2M++B3W3bdXS6Z1T5f3JdW
TLSH
T184232C003BE9823AF2BE4FB898F26145867BF5637603D58D2CC441DB5623FC596426EE
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

versexsogratis.com:443
versexsogratis.com:80
versexsogratis.com:7797
versexsogratis.com:8707
versexsogratis.com:6620
www.versexsogratis.com:443
www.versexsogratis.com:80
www.versexsogratis.com:7797
www.versexsogratis.com:8707
www.versexsogratis.com:6620
blaster.versexsogratis.com:443
blaster.versexsogratis.com:80
blaster.versexsogratis.com:7797
blaster.versexsogratis.com:8707
blaster.versexsogratis.com:6620
ursnif.versexsogratis.com:443
ursnif.versexsogratis.com:80
ursnif.versexsogratis.com:7797
ursnif.versexsogratis.com:8707
ursnif.versexsogratis.com:6620
iloveyou.versexsogratis.com:443
iloveyou.versexsogratis.com:80
iloveyou.versexsogratis.com:7797
iloveyou.versexsogratis.com:8707
iloveyou.versexsogratis.com:6620
client.versexsogratis.com:443
client.versexsogratis.com:80
client.versexsogratis.com:7797
client.versexsogratis.com:8707
client.versexsogratis.com:6620

Mutex

pwGPGsvQti6R

Attributes

delay
0
install
true
install_file
o0rww48f.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/0x001d00000002b34a-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
5360	o0rww48f.exe
5416	o0rww48f.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	o0rww48f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
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	o0rww48f.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5264	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
5248	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
Token: SeDebugPrivilege	5360	o0rww48f.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1476 wrote to memory of 4388	1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe	81
PID 1476 wrote to memory of 3376	1476	ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe	83
PID 4388 wrote to memory of 5248	4388	cmd.exe	85
PID 3376 wrote to memory of 5264	3376	cmd.exe	86
PID 3376 wrote to memory of 5416	3376	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe
"C:\Users\Admin\AppData\Local\Temp\ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "o0rww48f" /tr '"C:\Users\Admin\AppData\Roaming\o0rww48f.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4388
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "o0rww48f" /tr '"C:\Users\Admin\AppData\Roaming\o0rww48f.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5248
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpAA35.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3376
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:5264
- - C:\Users\Admin\AppData\Roaming\o0rww48f.exe
    "C:\Users\Admin\AppData\Roaming\o0rww48f.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:5416

C:\Users\Admin\AppData\Roaming\o0rww48f.exe
"C:\Users\Admin\AppData\Roaming\o0rww48f.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:5360

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

tmpAA35.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpAA35.tmp.bat
Size 152B
SHA256 d858a88d9b97b6d8500b256db308067fd1ca7e3bbdd11730907a89d771058129
MD5 759d48fde35d1563884ecc1ce2e417eb
SHA1 54ac3125dd29befeb4a73e0de92bc010f9d0fd77
SHA512 aa3c4417f062b2f531e3ae93ca8a28c8c5f8503dcc2a65c158f7e6f57637ae53ab58609f7a9da84e6a842bee7185f8fd62684b80532806a7e93a4e0c56fb500c
TLSH
T122C02B8652C9EB2E280A143B02FAD48DE1736D393F44BB00C744400E138049CF0DD3C3
MD5 SHA1 SHA512 TLSH

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o0rww48f.exe

Path C:\Users\Admin\AppData\Roaming\o0rww48f.exe
Size 45KB
SHA256 ec1583c4da22c4bb5d2051a6476763317190a7dd75b3d0f124604ec50b3577a4
MD5 4c55d1c0a627a8b565769f764264b585
SHA1 53c76ba78b51b6648cf3de531366edde66d75b73
SHA512 1fb9d5704b036d255b42b11a8b61f73aad6dcc226024f3023612da5e0e94aa2e70983559d7d957bfd63d9f7b1ec266fe86ec880cfb245d9122518b314884314b
SSDEEP 768:cu6Ra7pTPYzbs8WU+Xaamo2q1n+GtnVnJtHuPIWzjbKgX3i6GWGlt5ETjN7ryyWz:cu6Y7pTPso2M++B3W3bdXS6Z1T5f3JdW
TLSH
T184232C003BE9823AF2BE4FB898F26145867BF5637603D58D2CC441DB5623FC596426EE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1476-0-0x0000000000B90000-0x0000000000BA2000-memory.dmp

Download

memory/1476-1-0x0000000005740000-0x0000000005750000-memory.dmp

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memory/1476-2-0x0000000005620000-0x00000000056BC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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