asyncrat | e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3

General

Target
e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
Size 45KB
Sample260601-rgt2pse15t
SHA256 e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3
MD5 65a219fc90619e1806b9134be59393bc
SHA1 b29eb7337897935f2e94da56e0e161a6002a85d7
SHA512 b485dac1bc8e0f1231d2a4812b0b9715acfdb6a91f551f6efd581a229d83bdb3761c806574e236322e8c7b9b20e3fba50cd8ace8fc5916d32993024598ab1e99
SSDEEP 768:0u1lJTHwAUgQWUaT2Wmo2q9sZoyTM4PIXpjbsgX3im/BCaPZxla3WRKBDZ8x:0u1lJTHcw2dh0XJbjXSwCaxxM1d8x
TLSH
T1FF232B0037E8C22BF2BE5F78ACF26145867AF6672603D54D1CC441DB5623BC69A427EE
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

sexkhongche.best:443
sexkhongche.best:80
sexkhongche.best:7797
sexkhongche.best:8707
sexkhongche.best:6620
www.sexkhongche.best:443
www.sexkhongche.best:80
www.sexkhongche.best:7797
www.sexkhongche.best:8707
www.sexkhongche.best:6620
fakeupdates.sexkhongche.best:443
fakeupdates.sexkhongche.best:80
fakeupdates.sexkhongche.best:7797
fakeupdates.sexkhongche.best:8707
fakeupdates.sexkhongche.best:6620
zbot.sexkhongche.best:443
zbot.sexkhongche.best:80
zbot.sexkhongche.best:7797
zbot.sexkhongche.best:8707
zbot.sexkhongche.best:6620
qbot.sexkhongche.best:443
qbot.sexkhongche.best:80
qbot.sexkhongche.best:7797
qbot.sexkhongche.best:8707
qbot.sexkhongche.best:6620
downadup.sexkhongche.best:443
downadup.sexkhongche.best:80
downadup.sexkhongche.best:7797
downadup.sexkhongche.best:8707
downadup.sexkhongche.best:6620

Mutex

sygP564q67HB

Attributes

delay
0
install
true
install_file
v0e8ta.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/0x00140000000256ce-8.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2484	v0e8ta.exe
4388	v0e8ta.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	v0e8ta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	v0e8ta.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
4104	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
3516	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
Token: SeDebugPrivilege	2484	v0e8ta.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 3616 wrote to memory of 5048	3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe	80
PID 3616 wrote to memory of 3048	3616	e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe	82
PID 5048 wrote to memory of 3516	5048	cmd.exe	84
PID 3048 wrote to memory of 4104	3048	cmd.exe	85
PID 3048 wrote to memory of 4388	3048	cmd.exe	88

C:\Users\Admin\AppData\Local\Temp\e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe
"C:\Users\Admin\AppData\Local\Temp\e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3616
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "v0e8ta" /tr '"C:\Users\Admin\AppData\Roaming\v0e8ta.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:5048
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "v0e8ta" /tr '"C:\Users\Admin\AppData\Roaming\v0e8ta.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3516
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1B43.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4104
- - C:\Users\Admin\AppData\Roaming\v0e8ta.exe
    "C:\Users\Admin\AppData\Roaming\v0e8ta.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    PID:4388

C:\Users\Admin\AppData\Roaming\v0e8ta.exe
"C:\Users\Admin\AppData\Roaming\v0e8ta.exe"
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2484

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

tmp1B43.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp1B43.tmp.bat
Size 150B
SHA256 576d8c320851d115d3e4aaee4e5e7e1ba8ce6872ea441db7fa8f05d888a02c13
MD5 b98e6e57c5245e93ba1413a172ed3857
SHA1 697f06ff7cd484898e5b4f7b6a34cfac0c3277e0
SHA512 4a93c4778f22b14341e394e433454734f5a31a53a6380f0eaa0eb3107ac9e48f1d0c56def2b1e2f42a6c23eca0bdce2f4f0cd715e14d58b8f853f7f4e8786c40
TLSH
T10DC08C4265C9AA0E6809246302BA948DA172EC5A3F84BB808304801D2681498E0D9241
MD5 SHA1 SHA512 TLSH

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v0e8ta.exe

Path C:\Users\Admin\AppData\Roaming\v0e8ta.exe
Size 45KB
SHA256 e51eb202d729efe38dc9c3e539b98660f277565e2afa876d4b94aa42bd9228a3
MD5 65a219fc90619e1806b9134be59393bc
SHA1 b29eb7337897935f2e94da56e0e161a6002a85d7
SHA512 b485dac1bc8e0f1231d2a4812b0b9715acfdb6a91f551f6efd581a229d83bdb3761c806574e236322e8c7b9b20e3fba50cd8ace8fc5916d32993024598ab1e99
SSDEEP 768:0u1lJTHwAUgQWUaT2Wmo2q9sZoyTM4PIXpjbsgX3im/BCaPZxla3WRKBDZ8x:0u1lJTHcw2dh0XJbjXSwCaxxM1d8x
TLSH
T1FF232B0037E8C22BF2BE5F78ACF26145867AF6672603D54D1CC441DB5623BC69A427EE
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3616-0-0x0000000000BC0000-0x0000000000BD2000-memory.dmp

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memory/3616-1-0x0000000005660000-0x0000000005670000-memory.dmp

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memory/3616-2-0x0000000005670000-0x000000000570C000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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