asyncrat | c306becc8baa90c1d305a2dd9dfb7649ecbc51f356553da16d4300ac728cea3c

General

Target

invoice.exe
Size

688KB
MD5

720b1afcfa57b140329465ecbcdec31e
SHA1

be0387473f50e017a13e3a097ac80cca00bd0350
SHA256

c306becc8baa90c1d305a2dd9dfb7649ecbc51f356553da16d4300ac728cea3c
SHA512

134750da6778a2ce634c579cd2b26344d9a164ec026e737f368dad5d5738472fb4afc10e8310e837c7a896dc94b15b7639ed92d5a71594ebe27376e4603475a3

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

exportmunic007.duckdns.org:6606

exportmunic007.duckdns.org:7707

exportmunic007.duckdns.org:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

anti_vm
false
bsod
false
delay
3
install
false
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

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

Async RAT payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1532-64-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1532-65-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1532-63-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1532-66-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1532-72-0x00000000004F0000-0x0000000000512000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

Processes:

invoice.exe

description pid process target process

PID 1464 set thread context of 1532 1464 invoice.exe invoice.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
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

956 schtasks.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

invoice.exepowershell.exe

pid process

1464 invoice.exe
1464 invoice.exe
1464 invoice.exe
1464 invoice.exe
1464 invoice.exe
1464 invoice.exe
1464 invoice.exe
1964 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

invoice.exepowershell.exeinvoice.exe

description pid process

Token: SeDebugPrivilege 1464 invoice.exe
Token: SeDebugPrivilege 1964 powershell.exe
Token: SeDebugPrivilege 1532 invoice.exe

description	pid	process	target process
PID 1464 set thread context of 1532	1464	invoice.exe	invoice.exe

pid	process
956	schtasks.exe

pid	process
1464	invoice.exe
1464	invoice.exe
1464	invoice.exe
1464	invoice.exe
1464	invoice.exe
1464	invoice.exe
1464	invoice.exe
1964	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1464	invoice.exe
Token: SeDebugPrivilege	1964	powershell.exe
Token: SeDebugPrivilege	1532	invoice.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

invoice.exe

description	pid	process	target process
PID 1464 wrote to memory of 1964	1464	invoice.exe	powershell.exe
PID 1464 wrote to memory of 1964	1464	invoice.exe	powershell.exe
PID 1464 wrote to memory of 1964	1464	invoice.exe	powershell.exe
PID 1464 wrote to memory of 1964	1464	invoice.exe	powershell.exe
PID 1464 wrote to memory of 956	1464	invoice.exe	schtasks.exe
PID 1464 wrote to memory of 956	1464	invoice.exe	schtasks.exe
PID 1464 wrote to memory of 956	1464	invoice.exe	schtasks.exe
PID 1464 wrote to memory of 956	1464	invoice.exe	schtasks.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe
PID 1464 wrote to memory of 1532	1464	invoice.exe	invoice.exe

C:\Users\Admin\AppData\Local\Temp\invoice.exe
"C:\Users\Admin\AppData\Local\Temp\invoice.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1464

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\KkFQRCLo.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1964

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\KkFQRCLo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp12E5.tmp"
2⤵
- Creates scheduled task(s)
PID:956

C:\Users\Admin\AppData\Local\Temp\invoice.exe
"C:\Users\Admin\AppData\Local\Temp\invoice.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1532

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp12E5.tmp
MD5
8c3d2fb96461da0862746a8aa772d2d7

SHA1
d435c8f4c1ad7eb62e363b1b56d3765997b16442

SHA256
58e0edd7611e5ad142b2a20fe169dab91ee4363214539e910074127e1c59dc0e

SHA512
10545255ccab47242bd97c2461c15aa14edf280318e8d401ee64980dec7b8e1a37220ad0285dc6fe48af1204dc2d328e2bb947f299f5b2b0cac41a3d5b906663

Download Submit
memory/1464-54-0x0000000000FC0000-0x0000000001072000-memory.dmp

Filesize
712KB

Download
memory/1464-55-0x0000000075F81000-0x0000000075F83000-memory.dmp

Filesize
8KB

Download
memory/1464-56-0x0000000004D90000-0x0000000004D91000-memory.dmp

Filesize
4KB

Download
memory/1464-57-0x0000000000930000-0x000000000093C000-memory.dmp

Filesize
48KB

Download
memory/1464-58-0x0000000000DC0000-0x0000000000DFC000-memory.dmp

Filesize
240KB

Download
memory/1532-63-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1532-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1532-64-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1532-62-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1532-61-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1532-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1532-71-0x0000000004E00000-0x0000000004E01000-memory.dmp

Filesize
4KB

Download
memory/1532-72-0x00000000004F0000-0x0000000000512000-memory.dmp

Filesize
136KB

Download
memory/1964-67-0x0000000001F40000-0x00000000020F0000-memory.dmp

Filesize
1.7MB

Download
memory/1964-68-0x0000000001F40000-0x00000000020F0000-memory.dmp

Filesize
1.7MB

Download
memory/1964-69-0x0000000001F40000-0x00000000020F0000-memory.dmp

Filesize
1.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads