asyncrat | faa922cd0bf4fe5e36e76eb63712ea0034ffb9fa67a30414bd2e16d257de34f4

General

Target

TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe
Size

1.8MB
MD5

a72cedec68ccbac443a12c424969a7ae
SHA1

1038d83be7e5186384c5b8d6855670e3e8fb2bd7
SHA256

faa922cd0bf4fe5e36e76eb63712ea0034ffb9fa67a30414bd2e16d257de34f4
SHA512

5deb388207c0f74cddc115e9ac1fef926bf4c41ed22f34fc8b42adda958e065891dc0daea4012608974a05329b7708784bff45b7c59daa186b672bea151f98ef
SSDEEP

49152:rr8glBAq6FzNKUD0HXYdFeYDYuAHIztL:X8WBoYHXYvnsEL

Score

10^/10

asyncrat default persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

wertpkgc.duckdns.org:8091

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/memory/2356-144-0x0000000000400000-0x0000000000412000-memory.dmp	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-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Htesa = "\"C:\\Users\\Admin\\AppData\\Roaming\\Eazzz\\Htesa.exe\""	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4964 set thread context of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3632	powershell.exe
3632	powershell.exe
4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe
4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3632	powershell.exe
Token: SeDebugPrivilege	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 4964 wrote to memory of 3632	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	85
PID 4964 wrote to memory of 3632	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	85
PID 4964 wrote to memory of 3632	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	85
PID 4964 wrote to memory of 1184	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	88
PID 4964 wrote to memory of 1184	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	88
PID 4964 wrote to memory of 1184	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	88
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89
PID 4964 wrote to memory of 2356	4964	TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe	89

C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe
"C:\Users\Admin\AppData\Local\Temp\TRANSFERENCIA DE PAGO A CUENTA BANCARIA.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4964
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3632
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:1184
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  PID:2356

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2356-144-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3632-138-0x00000000057E0000-0x0000000005846000-memory.dmp

Filesize
408KB

Download
memory/3632-136-0x0000000005140000-0x0000000005768000-memory.dmp

Filesize
6.2MB

Download
memory/3632-137-0x0000000004FD0000-0x0000000005036000-memory.dmp

Filesize
408KB

Download
memory/3632-139-0x0000000005E10000-0x0000000005E2E000-memory.dmp

Filesize
120KB

Download
memory/3632-140-0x0000000007600000-0x0000000007C7A000-memory.dmp

Filesize
6.5MB

Download
memory/3632-141-0x0000000006320000-0x000000000633A000-memory.dmp

Filesize
104KB

Download
memory/3632-135-0x0000000002810000-0x0000000002846000-memory.dmp

Filesize
216KB

Download
memory/4964-132-0x0000000000E80000-0x0000000001048000-memory.dmp

Filesize
1.8MB

Download
memory/4964-133-0x0000000005BA0000-0x0000000005BC2000-memory.dmp

Filesize
136KB

Download

Analysis

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