asyncrat | 8a58c64252e3abadfeda754f9e4ae6127df44b87df737b29b62199a7e17e884e

General

Target
tmpkk6lfdcz.exe
Size 45KB
Sample260522-ylewxaes4p
SHA256 8a58c64252e3abadfeda754f9e4ae6127df44b87df737b29b62199a7e17e884e
MD5 a8a23aa596e9d7c70b9bb31224f483f2
SHA1 e1ddd8b4c2bf366aa192a890adfd21a1d138bab5
SHA512 564e37a9272ed1b9fbaf49ff00f40635c80afeae7f0f58b9de540a3cbf1402e1163af542d49692ad2372e85c3d523009582eb4ab4dc5b13a8bcfcaac59c10866
SSDEEP 768:0uPipT/LGKeWUszuAmo2q9zwD/y/aqPIszjbLgX3i6FcvCQdEWvBDZ8x:0uPipT/qY2Qkhs3b0XS6FcvNZd8x
TLSH
T1D4233A003BE9C12BF2BE4F789DF26145467AB6633A03D68D1CC4119B5613FC68A526FE
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

artichokemacdougal.com:443
artichokemacdougal.com:80
artichokemacdougal.com:7797
artichokemacdougal.com:8707
artichokemacdougal.com:6620
www.artichokemacdougal.com:443
www.artichokemacdougal.com:80
www.artichokemacdougal.com:7797
www.artichokemacdougal.com:8707
www.artichokemacdougal.com:6620
remcos.artichokemacdougal.com:443
remcos.artichokemacdougal.com:80
remcos.artichokemacdougal.com:7797
remcos.artichokemacdougal.com:8707
remcos.artichokemacdougal.com:6620
azorult.artichokemacdougal.com:443
azorult.artichokemacdougal.com:80
azorult.artichokemacdougal.com:7797
azorult.artichokemacdougal.com:8707
azorult.artichokemacdougal.com:6620
clop.artichokemacdougal.com:443
clop.artichokemacdougal.com:80
clop.artichokemacdougal.com:7797
clop.artichokemacdougal.com:8707
clop.artichokemacdougal.com:6620

Mutex

HGeSGihatz6J

Attributes

delay
0
install
true
install_file
fqq7z75.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
behavioral3/files/0x001c00000002b407-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2480	fqq7z75.exe
4076	fqq7z75.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	tmpkk6lfdcz.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	fqq7z75.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fqq7z75.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2484	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
1488	schtasks.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe
1860	tmpkk6lfdcz.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1860	tmpkk6lfdcz.exe
Token: SeDebugPrivilege	2480	fqq7z75.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1860 wrote to memory of 2984	1860	tmpkk6lfdcz.exe	80
PID 1860 wrote to memory of 3756	1860	tmpkk6lfdcz.exe	82
PID 2984 wrote to memory of 1488	2984	cmd.exe	84
PID 3756 wrote to memory of 2484	3756	cmd.exe	85
PID 3756 wrote to memory of 4076	3756	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\tmpkk6lfdcz.exe
"C:\Users\Admin\AppData\Local\Temp\tmpkk6lfdcz.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "fqq7z75" /tr '"C:\Users\Admin\AppData\Roaming\fqq7z75.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "fqq7z75" /tr '"C:\Users\Admin\AppData\Roaming\fqq7z75.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1488
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp41B7.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3756
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2484
- - C:\Users\Admin\AppData\Roaming\fqq7z75.exe
    "C:\Users\Admin\AppData\Roaming\fqq7z75.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4076

C:\Users\Admin\AppData\Roaming\fqq7z75.exe
"C:\Users\Admin\AppData\Roaming\fqq7z75.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2480

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

tmp41B7.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp41B7.tmp.bat
Size 151B
SHA256 0982aaf70800980de35430566191515041e55d6dd83f686ada92e5ce1cf9f025
MD5 c56235f5c9cf924a74b287ad64591b4c
SHA1 e2557ff3afd48530d1924a63e92fb8bc7a3aaf7a
SHA512 1dac7c54561c7790c62b8bf8ed4a6d05cfea17ec5cc3539b184524e392a87f4e70131cb5f48fa64fccd50cd1388107553d2583480232a9ddcffa497aebcb9bd3
TLSH
T125C02B5351C6EB4F2C05381312FAD48C9573AC1E3F44FB00D705404D13808C8F5E9385
MD5 SHA1 SHA512 TLSH

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fqq7z75.exe

Path C:\Users\Admin\AppData\Roaming\fqq7z75.exe
Size 45KB
SHA256 8a58c64252e3abadfeda754f9e4ae6127df44b87df737b29b62199a7e17e884e
MD5 a8a23aa596e9d7c70b9bb31224f483f2
SHA1 e1ddd8b4c2bf366aa192a890adfd21a1d138bab5
SHA512 564e37a9272ed1b9fbaf49ff00f40635c80afeae7f0f58b9de540a3cbf1402e1163af542d49692ad2372e85c3d523009582eb4ab4dc5b13a8bcfcaac59c10866
SSDEEP 768:0uPipT/LGKeWUszuAmo2q9zwD/y/aqPIszjbLgX3i6FcvCQdEWvBDZ8x:0uPipT/qY2Qkhs3b0XS6FcvNZd8x
TLSH
T1D4233A003BE9C12BF2BE4F789DF26145467AB6633A03D68D1CC4119B5613FC68A526FE
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/1860-0-0x0000000000050000-0x0000000000062000-memory.dmp

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memory/1860-1-0x0000000004C40000-0x0000000004C50000-memory.dmp

Download

memory/1860-2-0x0000000004B10000-0x0000000004BAC000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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