asyncrat | 72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95

General

Target

72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
Size

61KB
MD5

ca22538ddbbbadae6d38213f30f709a8
SHA1

f204ec3020a3f9837ecf2956d640c819f0322f46
SHA256

72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95
SHA512

a27e28fb705245b6b3cf3cabd07db32ceee877f82d5230dfb594d58a61690bae411a01871dbb67559802d9d662912d20fff312948a7552c774f524df14bd3368
SSDEEP

1536:GDjC4gV3FZw3SoND/M3bzPS7C7+ZawKir0f+:GvC4gtFm3Sm03bzys+D0m

Score

10^/10

asyncrat discovery rat

Malware Config

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/0x000c000000023b85-11.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe

Executes dropped EXE 1 IoCs

pid	Process
3324	xiaojie1.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	xiaojie1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4832	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
1384	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
Token: SeDebugPrivilege	3324	xiaojie1.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 4120	1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	84
PID 1900 wrote to memory of 4120	1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	84
PID 1900 wrote to memory of 4120	1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	84
PID 1900 wrote to memory of 1504	1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	86
PID 1900 wrote to memory of 1504	1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	86
PID 1900 wrote to memory of 1504	1900	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	86
PID 1504 wrote to memory of 4832	1504	cmd.exe	88
PID 1504 wrote to memory of 4832	1504	cmd.exe	88
PID 1504 wrote to memory of 4832	1504	cmd.exe	88
PID 4120 wrote to memory of 1384	4120	cmd.exe	89
PID 4120 wrote to memory of 1384	4120	cmd.exe	89
PID 4120 wrote to memory of 1384	4120	cmd.exe	89
PID 1504 wrote to memory of 3324	1504	cmd.exe	90
PID 1504 wrote to memory of 3324	1504	cmd.exe	90
PID 1504 wrote to memory of 3324	1504	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
"C:\Users\Admin\AppData\Local\Temp\72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "xiaojie1" /tr '"C:\Users\Admin\AppData\Roaming\xiaojie1.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4120
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "xiaojie1" /tr '"C:\Users\Admin\AppData\Roaming\xiaojie1.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:1384
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpA8D3.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1504
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4832
- - C:\Users\Admin\AppData\Roaming\xiaojie1.exe
    "C:\Users\Admin\AppData\Roaming\xiaojie1.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:3324

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\tmpA8D3.tmp.bat

Filesize
152B

MD5
d3585e6afa62f9082d4c231e6661ed1d

SHA1
64572176b8367e1b744acdb729c9dd1ea3f914c4

SHA256
01128b0bffd6bf5a97016c76c2de396c289a9697f2f86e510e059b6a57d498bc

SHA512
c2e13ba8606d1e056cc46feaa9d3b3ba3a30675d61e4c0c868bb3526c7c6c8f11c6d722e3b03c0fdfdc4c00a8dffe520600675d3ae37478e4fa7b17e2a35f13c

Download Submit
C:\Users\Admin\AppData\Roaming\xiaojie1.exe

Filesize
61KB

MD5
ca22538ddbbbadae6d38213f30f709a8

SHA1
f204ec3020a3f9837ecf2956d640c819f0322f46

SHA256
72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95

SHA512
a27e28fb705245b6b3cf3cabd07db32ceee877f82d5230dfb594d58a61690bae411a01871dbb67559802d9d662912d20fff312948a7552c774f524df14bd3368

Download Submit
memory/1900-0-0x0000000074DAE000-0x0000000074DAF000-memory.dmp

Filesize
4KB

Download
memory/1900-1-0x0000000000F90000-0x0000000000FA6000-memory.dmp

Filesize
88KB

Download
memory/1900-2-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/1900-3-0x00000000059C0000-0x0000000005A5C000-memory.dmp

Filesize
624KB

Download
memory/1900-9-0x0000000074DA0000-0x0000000075550000-memory.dmp

Filesize
7.7MB

Download
memory/3324-13-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download
memory/3324-14-0x0000000074D00000-0x00000000754B0000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads