asyncrat | 727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4

General

Target

727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
Size

47KB
MD5

c8d7a1fbf24efd3a9ef031b81a4fbdcb
SHA1

1147ff4e42c33ce3795422d3309f83e3460dba6b
SHA256

727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4
SHA512

b6c5415e31aef5acd04ccb969916f2184232bcbcca9a5f691eb4cb79e9f40cba8e3ca53d55cba072e34165b1e8ad55564f2121540d178a76165d866a8279bd6a
SSDEEP

768:YuW01Towx/9WU9mp+Xmo2qzQh+JRVLiCPIsAKjILU0bu0kv/TRTXfuO6fcIuyvBQ:YuW01ToqEO2MLliLsAKjEbu0a/TRbWOt

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:4444

70.104.186.131:6606

70.104.186.131:7707

70.104.186.131:8808

70.104.186.131:4444

Mutex

P7nH82MyXxoq

Attributes

delay
3
install
true
install_file
windowsappsec.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0008000000023c94-12.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe

Executes dropped EXE 1 IoCs

pid	Process
964	windowsappsec.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 6 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	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.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	windowsappsec.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1368	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
1920	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
Token: SeDebugPrivilege	964	windowsappsec.exe
Token: SeDebugPrivilege	964	windowsappsec.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2988 wrote to memory of 1844	2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe	86
PID 2988 wrote to memory of 1844	2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe	86
PID 2988 wrote to memory of 1844	2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe	86
PID 2988 wrote to memory of 4696	2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe	88
PID 2988 wrote to memory of 4696	2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe	88
PID 2988 wrote to memory of 4696	2988	727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe	88
PID 4696 wrote to memory of 1368	4696	cmd.exe	90
PID 4696 wrote to memory of 1368	4696	cmd.exe	90
PID 4696 wrote to memory of 1368	4696	cmd.exe	90
PID 1844 wrote to memory of 1920	1844	cmd.exe	91
PID 1844 wrote to memory of 1920	1844	cmd.exe	91
PID 1844 wrote to memory of 1920	1844	cmd.exe	91
PID 4696 wrote to memory of 964	4696	cmd.exe	92
PID 4696 wrote to memory of 964	4696	cmd.exe	92
PID 4696 wrote to memory of 964	4696	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe
"C:\Users\Admin\AppData\Local\Temp\727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2988
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windowsappsec" /tr '"C:\Users\Admin\AppData\Roaming\windowsappsec.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1844
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "windowsappsec" /tr '"C:\Users\Admin\AppData\Roaming\windowsappsec.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1920
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE251.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4696
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1368
- - C:\Users\Admin\AppData\Roaming\windowsappsec.exe
    "C:\Users\Admin\AppData\Roaming\windowsappsec.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:964

Network

MITRE ATT&CK Enterprise v15

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

Query Registry

1

T1012

System Information Discovery

2

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

C:\Users\Admin\AppData\Local\Temp\tmpE251.tmp.bat

Filesize
157B

MD5
8c5dcd6ebfc7f5056a37bccaf40a343d

SHA1
89974f006b01f9c4f602657e28c642ef17af5bde

SHA256
8cca6e23bd4181859a8dd5565aa1b55702ccad7a1062e1c04bb074488db4c695

SHA512
24f89621860e1f1fb22be794a14c25c635100f5e634b69690d10d69b4eaf11e30b2e4ec1bff283e34f6e4d75cb92d43ecf8f3e58a9b87091c4053036b1680a39

Download Submit
C:\Users\Admin\AppData\Roaming\windowsappsec.exe

Filesize
47KB

MD5
c8d7a1fbf24efd3a9ef031b81a4fbdcb

SHA1
1147ff4e42c33ce3795422d3309f83e3460dba6b

SHA256
727704989958642937c6bd8a84903b74a1fc1841e791c239a055573b0fe628c4

SHA512
b6c5415e31aef5acd04ccb969916f2184232bcbcca9a5f691eb4cb79e9f40cba8e3ca53d55cba072e34165b1e8ad55564f2121540d178a76165d866a8279bd6a

Download Submit
memory/964-14-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/964-15-0x0000000074800000-0x0000000074FB0000-memory.dmp

Filesize
7.7MB

Download
memory/2988-0-0x00000000748AE000-0x00000000748AF000-memory.dmp

Filesize
4KB

Download
memory/2988-1-0x00000000000B0000-0x00000000000C2000-memory.dmp

Filesize
72KB

Download
memory/2988-2-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download
memory/2988-3-0x0000000004A60000-0x0000000004AC6000-memory.dmp

Filesize
408KB

Download
memory/2988-4-0x0000000004F70000-0x000000000500C000-memory.dmp

Filesize
624KB

Download
memory/2988-10-0x00000000748A0000-0x0000000075050000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads