asyncrat | d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e

General

Target
d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
Size 45KB
Sample260531-qlam7ahs2s
SHA256 d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e
MD5 e40624e5e14361cc18280bd09a0923c6
SHA1 612fb64c4537f87e7737bb9900d565baf1ae0e83
SHA512 dde2a310ca562f438483208b38d6d4052fc9e7e5021c51c4bdc721da77e45cfccb0070454e3e532270845c18baa047e4f08a88942e0867fd8224fdc46078417a
SSDEEP 768:puTO9TgQsFcZWURDOjmo2qw9O5QPCBjPSNjPI/zjb2gX3iJBBCR5O+PT/BDZ7x:puTO9TgQCv2NO5sMSK/3bpXSpi1Vd7x
TLSH
T125232B0037E8812BF2BE5F7898F26145467AF6633603E5492CC451DB5713FC69A42AFE
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

sexvn88.blog:443
sexvn88.blog:80
sexvn88.blog:7797
sexvn88.blog:8707
sexvn88.blog:6620
www.sexvn88.blog:443
www.sexvn88.blog:80
www.sexvn88.blog:7797
www.sexvn88.blog:8707
www.sexvn88.blog:6620
ryuk.sexvn88.blog:443
ryuk.sexvn88.blog:80
ryuk.sexvn88.blog:7797
ryuk.sexvn88.blog:8707
ryuk.sexvn88.blog:6620
hermeticwiper.sexvn88.blog:443
hermeticwiper.sexvn88.blog:80
hermeticwiper.sexvn88.blog:7797
hermeticwiper.sexvn88.blog:8707
hermeticwiper.sexvn88.blog:6620

Mutex

JnRUycBajCJK

Attributes

delay
0
install
true
install_file
aqqr8dw.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/0x000a00000002a41c-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1568	aqqr8dw.exe
6040	aqqr8dw.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	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aqqr8dw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aqqr8dw.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4452	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
5472	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
Token: SeDebugPrivilege	1568	aqqr8dw.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 712 wrote to memory of 4056	712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe	80
PID 712 wrote to memory of 2588	712	d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe	81
PID 2588 wrote to memory of 4452	2588	cmd.exe	84
PID 4056 wrote to memory of 5472	4056	cmd.exe	85
PID 2588 wrote to memory of 6040	2588	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe
"C:\Users\Admin\AppData\Local\Temp\d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:712
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "aqqr8dw" /tr '"C:\Users\Admin\AppData\Roaming\aqqr8dw.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4056
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "aqqr8dw" /tr '"C:\Users\Admin\AppData\Roaming\aqqr8dw.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:5472
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC36F.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2588
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4452
- - C:\Users\Admin\AppData\Roaming\aqqr8dw.exe
    "C:\Users\Admin\AppData\Roaming\aqqr8dw.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:6040

C:\Users\Admin\AppData\Roaming\aqqr8dw.exe
"C:\Users\Admin\AppData\Roaming\aqqr8dw.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:1568

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

tmpC36F.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpC36F.tmp.bat
Size 151B
SHA256 fdd033f4f7dcf04bf89d0bb31308324c9c233131fd0ba6f4a4905274b5f9952b
MD5 8231a33851f671e7b074412511752d22
SHA1 a08ac8fd055f68d0cd869cb9f6a843feaec72ebe
SHA512 7aae56571568abf1db5918ce6219fcb4269e7fc540c1e2fafeddec4d344d8c2cc1490d786e20e9c14489ddd3516801a54505fbbdaf65c90ffec85cf8dcdbceae
TLSH
T135C08C4291C6BA9E6909245302BAE48DA1A6A8593E80AB10C304801D6681458E0D9241
MD5 SHA1 SHA512 TLSH

Submit Download

aqqr8dw.exe

Path C:\Users\Admin\AppData\Roaming\aqqr8dw.exe
Size 45KB
SHA256 d5bcb11259011ee15e9ca569bf355a68d275c8bbdae7ad03d43efc8278343c7e
MD5 e40624e5e14361cc18280bd09a0923c6
SHA1 612fb64c4537f87e7737bb9900d565baf1ae0e83
SHA512 dde2a310ca562f438483208b38d6d4052fc9e7e5021c51c4bdc721da77e45cfccb0070454e3e532270845c18baa047e4f08a88942e0867fd8224fdc46078417a
SSDEEP 768:puTO9TgQsFcZWURDOjmo2qw9O5QPCBjPSNjPI/zjb2gX3iJBBCR5O+PT/BDZ7x:puTO9TgQCv2NO5sMSK/3bpXSpi1Vd7x
TLSH
T125232B0037E8812BF2BE5F7898F26145467AF6633603E5492CC451DB5713FC69A42AFE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/712-0-0x0000000000CA0000-0x0000000000CB2000-memory.dmp

Download

memory/712-1-0x00000000056A0000-0x00000000056B0000-memory.dmp

Download

memory/712-2-0x0000000005750000-0x00000000057EC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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