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
behavioral1/files/0x0012000000015ccc-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2900	xiaojie1.exe

Loads dropped DLL 1 IoCs

pid	Process
3044	cmd.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	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	xiaojie1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2084	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
2268	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
Token: SeDebugPrivilege	2900	xiaojie1.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 304	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	31
PID 1800 wrote to memory of 304	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	31
PID 1800 wrote to memory of 304	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	31
PID 1800 wrote to memory of 304	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	31
PID 1800 wrote to memory of 3044	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	33
PID 1800 wrote to memory of 3044	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	33
PID 1800 wrote to memory of 3044	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	33
PID 1800 wrote to memory of 3044	1800	72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe	33
PID 304 wrote to memory of 2268	304	cmd.exe	35
PID 304 wrote to memory of 2268	304	cmd.exe	35
PID 304 wrote to memory of 2268	304	cmd.exe	35
PID 304 wrote to memory of 2268	304	cmd.exe	35
PID 3044 wrote to memory of 2084	3044	cmd.exe	36
PID 3044 wrote to memory of 2084	3044	cmd.exe	36
PID 3044 wrote to memory of 2084	3044	cmd.exe	36
PID 3044 wrote to memory of 2084	3044	cmd.exe	36
PID 3044 wrote to memory of 2900	3044	cmd.exe	37
PID 3044 wrote to memory of 2900	3044	cmd.exe	37
PID 3044 wrote to memory of 2900	3044	cmd.exe	37
PID 3044 wrote to memory of 2900	3044	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe
"C:\Users\Admin\AppData\Local\Temp\72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1800
- 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:304
- - 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:2268
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpE64A.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3044
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2084
- - 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:2900

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

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

C:\Users\Admin\AppData\Local\Temp\tmpE64A.tmp.bat

Filesize
152B

MD5
8309479790783d51052d58f5a7e9e205

SHA1
95dbef4612ed3494b899cfec08419c87cb8fbb15

SHA256
85b59c51bdb29ef9b25ab652f3168bc1a216173f417aee5317fcf9d50694973a

SHA512
0af96898fc0b92c1b626f98b8c9338f91eabb0d8d91bae8f98ffd92d97e76cdd05912998aa72683589f60e04b4c3ed767fb791875edfefb8f7fcf25c90c6754d

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

Filesize
61KB

MD5
ca22538ddbbbadae6d38213f30f709a8

SHA1
f204ec3020a3f9837ecf2956d640c819f0322f46

SHA256
72f3829a16491d78f505e4e3de35389123c25860c58c4417cfbb2f8eb59daf95

SHA512
a27e28fb705245b6b3cf3cabd07db32ceee877f82d5230dfb594d58a61690bae411a01871dbb67559802d9d662912d20fff312948a7552c774f524df14bd3368

Download Submit
memory/1800-0-0x000000007426E000-0x000000007426F000-memory.dmp

Filesize
4KB

Download
memory/1800-1-0x0000000000D80000-0x0000000000D96000-memory.dmp

Filesize
88KB

Download
memory/1800-2-0x0000000074260000-0x000000007494E000-memory.dmp

Filesize
6.9MB

Download
memory/1800-11-0x0000000074260000-0x000000007494E000-memory.dmp

Filesize
6.9MB

Download
memory/2900-16-0x00000000001C0000-0x00000000001D6000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads