asyncrat | 6a552b03353efc74c7871b59d8844ee8990a224de336ca893e1b74d10cd4b16b

General

Target

PO20002106.exe
Size

695KB
MD5

823cbb9bac152ecf6d251f686ffa1ab5
SHA1

c9beb84d2505636820bd357abba5af0cd5a47c52
SHA256

6a552b03353efc74c7871b59d8844ee8990a224de336ca893e1b74d10cd4b16b
SHA512

30268ed85b8b3d2d3c2d8a4ef9f0207d546be06c83cdd163b11c11ba788c159e8324c2142e946e873a017d6c3f8922550331b3ea4b25c4c02c6448c3029110b6

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

null:null

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
yFdiISTMNVqtdBU1VShPLhZnkF6gdamp
anti_detection
false
autorun
false
bdos
false
delay
billion
host
null
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
https://pastebin.com/raw/Q5Dxj1fY
port
null
version
0.5.7B

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1556-9-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1556-10-0x000000000040C77E-mapping.dmp	asyncrat
behavioral1/memory/1556-11-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1556-12-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Legitimate hosting services abused for malware hosting/C2 1 TTPs

Web Service
T1102
Suspicious use of SetThreadContext 1 IoCs

Processes:

PO20002106.exe

description pid process target process

PID 1472 set thread context of 1556 1472 PO20002106.exe MSBuild.exe
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1688 schtasks.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

PO20002106.exe

pid process

1472 PO20002106.exe
1472 PO20002106.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

PO20002106.exeMSBuild.exe

description pid process

Token: SeDebugPrivilege 1472 PO20002106.exe
Token: SeDebugPrivilege 1556 MSBuild.exe

description	pid	process	target process
PID 1472 set thread context of 1556	1472	PO20002106.exe	MSBuild.exe

pid	process
1688	schtasks.exe

pid	process
1472	PO20002106.exe
1472	PO20002106.exe

description	pid	process
Token: SeDebugPrivilege	1472	PO20002106.exe
Token: SeDebugPrivilege	1556	MSBuild.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

PO20002106.exe

description	pid	process	target process
PID 1472 wrote to memory of 1688	1472	PO20002106.exe	schtasks.exe
PID 1472 wrote to memory of 1688	1472	PO20002106.exe	schtasks.exe
PID 1472 wrote to memory of 1688	1472	PO20002106.exe	schtasks.exe
PID 1472 wrote to memory of 1688	1472	PO20002106.exe	schtasks.exe
PID 1472 wrote to memory of 1004	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1004	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1004	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1004	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe
PID 1472 wrote to memory of 1556	1472	PO20002106.exe	MSBuild.exe

C:\Users\Admin\AppData\Local\Temp\PO20002106.exe
"C:\Users\Admin\AppData\Local\Temp\PO20002106.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1472

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\gTxPtX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA8DD.tmp"
2⤵
- Creates scheduled task(s)
PID:1688

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
PID:1004

C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1556

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1

T1102

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpA8DD.tmp
MD5
d3e37080b5ff48ae8e68c1fcfd46dff4

SHA1
31cae06704bce113f42654356ff3b3dfb5b6525b

SHA256
75ff954459a77735c3d0330d072f2e9f82bc08117df653af61724d0bbf8fa7d7

SHA512
fabfc4a4d0d0060e495f8c66503f82a3c988cda6e89da1cb2a855fc894c5525dd636a1c3fe456160f95cfbee341d71d440fd51e4db7930679a60e3c89164960e

Download Submit
memory/1472-2-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/1472-3-0x0000000001310000-0x0000000001311000-memory.dmp

Filesize
4KB

Download
memory/1472-5-0x0000000000440000-0x0000000000457000-memory.dmp

Filesize
92KB

Download
memory/1472-6-0x0000000000B10000-0x0000000000B50000-memory.dmp

Filesize
256KB

Download
memory/1556-9-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1556-10-0x000000000040C77E-mapping.dmp

Download
memory/1556-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1556-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1556-13-0x0000000074480000-0x0000000074B6E000-memory.dmp

Filesize
6.9MB

Download
memory/1688-7-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads