asyncrat | ee6aa50f61c71ad0a85d0c60e8cec35c45b949da9e173d79cdcb9c7586ac4e12

General

Target

Invoice ID-(679789789).vbs
Size

790KB
MD5

f02bd913e532f0ce5cc24adc82f8d0b3
SHA1

49fb5baaa600a5208ba80e18bf89142c3f20b4ab
SHA256

ee6aa50f61c71ad0a85d0c60e8cec35c45b949da9e173d79cdcb9c7586ac4e12
SHA512

64537b7b8b0fb21f41727c99bf6c8da7edc1f4a161a3d11da726c7e2f5b1cb653827ae6c2eba3dbe4ce2a618f839972c36e0cfc915f012b42b5d6d3d75ad3ea6

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

ahmed21018.linkpc.net:6666

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
HfV4Y9fCgIsC3FKVpoDmniTLvXYcA64a
anti_detection
false
autorun
true
bdos
false
delay
Default
host
ahmed21018.linkpc.net
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
6666
version
0.5.7B

aes.plain

Signatures

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

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3812-8-0x00000000024D0000-0x00000000024DC000-memory.dmp	asyncrat
behavioral2/memory/1572-26-0x0000000000AB0000-0x0000000000AD0000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

Processes:

57yhyh.ExEjava updater.exe

pid process

3812 57yhyh.ExE
1572 java updater.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

2236 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1836 timeout.exe

pid	process
2236	schtasks.exe

pid	process
1836	timeout.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

Processes:

57yhyh.ExE

pid	process
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE
3812	57yhyh.ExE

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

57yhyh.ExEjava updater.exe

description pid process

Token: SeDebugPrivilege 3812 57yhyh.ExE
Token: SeDebugPrivilege 1572 java updater.exe

description	pid	process
Token: SeDebugPrivilege	3812	57yhyh.ExE
Token: SeDebugPrivilege	1572	java updater.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

WScript.exe57yhyh.ExEcmd.execmd.exe

description	pid	process	target process
PID 648 wrote to memory of 3812	648	WScript.exe	57yhyh.ExE
PID 648 wrote to memory of 3812	648	WScript.exe	57yhyh.ExE
PID 648 wrote to memory of 3812	648	WScript.exe	57yhyh.ExE
PID 3812 wrote to memory of 3672	3812	57yhyh.ExE	cmd.exe
PID 3812 wrote to memory of 3672	3812	57yhyh.ExE	cmd.exe
PID 3812 wrote to memory of 3672	3812	57yhyh.ExE	cmd.exe
PID 3812 wrote to memory of 2544	3812	57yhyh.ExE	cmd.exe
PID 3812 wrote to memory of 2544	3812	57yhyh.ExE	cmd.exe
PID 3812 wrote to memory of 2544	3812	57yhyh.ExE	cmd.exe
PID 3672 wrote to memory of 2236	3672	cmd.exe	schtasks.exe
PID 3672 wrote to memory of 2236	3672	cmd.exe	schtasks.exe
PID 3672 wrote to memory of 2236	3672	cmd.exe	schtasks.exe
PID 2544 wrote to memory of 1836	2544	cmd.exe	timeout.exe
PID 2544 wrote to memory of 1836	2544	cmd.exe	timeout.exe
PID 2544 wrote to memory of 1836	2544	cmd.exe	timeout.exe
PID 2544 wrote to memory of 1572	2544	cmd.exe	java updater.exe
PID 2544 wrote to memory of 1572	2544	cmd.exe	java updater.exe
PID 2544 wrote to memory of 1572	2544	cmd.exe	java updater.exe

C:\Windows\System32\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\Invoice ID-(679789789).vbs"
1⤵
- Suspicious use of WriteProcessMemory
PID:648

C:\Users\Admin\AppData\Local\Temp\57yhyh.ExE
C:\Users\Admin\AppData\Local\Temp\57yhyh.ExE
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3812

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "java updater" /tr '"C:\Users\Admin\AppData\Roaming\java updater.exe"' & exit
3⤵
- Suspicious use of WriteProcessMemory
PID:3672

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "java updater" /tr '"C:\Users\Admin\AppData\Roaming\java updater.exe"'
4⤵
- Creates scheduled task(s)
PID:2236

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpED63.tmp.bat""
3⤵
- Suspicious use of WriteProcessMemory
PID:2544

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- Delays execution with timeout.exe
PID:1836

C:\Users\Admin\AppData\Roaming\java updater.exe
"C:\Users\Admin\AppData\Roaming\java updater.exe"
4⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1572

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

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\57yhyh.ExE
MD5
cfb2ab64e731d5649ec6c3e10a6d8a68

SHA1
9b90bd0ff358dc0b593f46f3ce3893676aa72dfb

SHA256
4c03ce198ff982b17ffa2da5c94c4715c6ec6e85792669dcd795945b18b8a09f

SHA512
30a89d466749e3fb546f8a0343ad063fbc05368d4067dd53f3b5d7d2c7f57c546c6109a636afa2f2f7a35ce7e57bf367812eeb3fad2027d93e262038856fa737

Download Submit
C:\Users\Admin\AppData\Local\Temp\57yhyh.ExE
MD5
cfb2ab64e731d5649ec6c3e10a6d8a68

SHA1
9b90bd0ff358dc0b593f46f3ce3893676aa72dfb

SHA256
4c03ce198ff982b17ffa2da5c94c4715c6ec6e85792669dcd795945b18b8a09f

SHA512
30a89d466749e3fb546f8a0343ad063fbc05368d4067dd53f3b5d7d2c7f57c546c6109a636afa2f2f7a35ce7e57bf367812eeb3fad2027d93e262038856fa737

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpED63.tmp.bat
MD5
953e17760c608866bd97fa0d5954f819

SHA1
816e6e0396409461b776813f1912f46c05a16b14

SHA256
cc9e883c50e51450cba5b99f5b49c90fe6a99b27b84e2457461dca47a705b0b4

SHA512
a1569ed8bce3783b18d67ae7fdb325d300c89063a0f7e43dbc2bf0627c0618e25f201b0beb3fc6f6daa069e59326c0a41b9f01b908395e736de62e428e1cb133

Download Submit
C:\Users\Admin\AppData\Roaming\java updater.exe
MD5
cfb2ab64e731d5649ec6c3e10a6d8a68

SHA1
9b90bd0ff358dc0b593f46f3ce3893676aa72dfb

SHA256
4c03ce198ff982b17ffa2da5c94c4715c6ec6e85792669dcd795945b18b8a09f

SHA512
30a89d466749e3fb546f8a0343ad063fbc05368d4067dd53f3b5d7d2c7f57c546c6109a636afa2f2f7a35ce7e57bf367812eeb3fad2027d93e262038856fa737

Download Submit
C:\Users\Admin\AppData\Roaming\java updater.exe
MD5
cfb2ab64e731d5649ec6c3e10a6d8a68

SHA1
9b90bd0ff358dc0b593f46f3ce3893676aa72dfb

SHA256
4c03ce198ff982b17ffa2da5c94c4715c6ec6e85792669dcd795945b18b8a09f

SHA512
30a89d466749e3fb546f8a0343ad063fbc05368d4067dd53f3b5d7d2c7f57c546c6109a636afa2f2f7a35ce7e57bf367812eeb3fad2027d93e262038856fa737

Download Submit
memory/1572-28-0x00000000067D0000-0x00000000067D1000-memory.dmp

Filesize
4KB

Download
memory/1572-25-0x0000000000DE0000-0x0000000000DE1000-memory.dmp

Filesize
4KB

Download
memory/1572-24-0x00000000058F0000-0x00000000058F1000-memory.dmp

Filesize
4KB

Download
memory/1572-23-0x0000000005D70000-0x0000000005D71000-memory.dmp

Filesize
4KB

Download
memory/1572-26-0x0000000000AB0000-0x0000000000AD0000-memory.dmp

Filesize
128KB

Download
memory/1572-18-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/1572-15-0x0000000000000000-mapping.dmp

Download
memory/1572-27-0x0000000000DA0000-0x0000000000DA1000-memory.dmp

Filesize
4KB

Download
memory/1836-14-0x0000000000000000-mapping.dmp

Download
memory/2236-13-0x0000000000000000-mapping.dmp

Download
memory/2544-11-0x0000000000000000-mapping.dmp

Download
memory/3672-10-0x0000000000000000-mapping.dmp

Download
memory/3812-2-0x0000000000000000-mapping.dmp

Download
memory/3812-9-0x0000000004D50000-0x0000000004D51000-memory.dmp

Filesize
4KB

Download
memory/3812-8-0x00000000024D0000-0x00000000024DC000-memory.dmp

Filesize
48KB

Download
memory/3812-6-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/3812-5-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads