asyncrat | afaed2a9b59964e7fcf1bcfdf4f1dcb0ac299875c27c0e699277d5326340bdb3

General

Target

CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe
Size

1.5MB
MD5

bed6117693dadb458cf4686b87a7e753
SHA1

b8f242faa45a641e2b1fa4237abb3d9f12e680b3
SHA256

afaed2a9b59964e7fcf1bcfdf4f1dcb0ac299875c27c0e699277d5326340bdb3
SHA512

b2370de67e8cc280de94b274fb3ed4fb960fe9ba45d5aa820adb1a806a0ee37a0d7ee1e1c8debd3f62c210197ffefec47e2640fcbe00fdac5d302dae2138b7a3
SSDEEP

49152:UIliPPEPPPPPPPPPAPPPPPPPPPPPPPPPPoPPPPPPPPPPPPPPPPPPuPPPPPPPPPPI:Jlk4

Score

10^/10

asyncrat persistence rat

Malware Config

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/3872-145-0x0000000000400000-0x000000000041A000-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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.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-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bzoxcale = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ltqtjva\\Bzoxcale.exe\""	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2140 set thread context of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91

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 2 IoCs

pid	Process
5020	powershell.exe
5020	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5020	powershell.exe
Token: SeDebugPrivilege	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe
Token: SeDebugPrivilege	3872	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2140 wrote to memory of 5020	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	84
PID 2140 wrote to memory of 5020	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	84
PID 2140 wrote to memory of 5020	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	84
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91
PID 2140 wrote to memory of 3872	2140	CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe	91

C:\Users\Admin\AppData\Local\Temp\CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe
"C:\Users\Admin\AppData\Local\Temp\CIRCULAR PROCESO REQUERIMIENTO BBVA #20012452 CODIGO DE VERIFICACION 8005241561ff1565465a4564164654d.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2140
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAANAAwAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5020
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:3872

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/2140-142-0x0000000006C70000-0x0000000007214000-memory.dmp

Filesize
5.6MB

Download
memory/2140-133-0x0000000005550000-0x0000000005572000-memory.dmp

Filesize
136KB

Download
memory/2140-143-0x0000000005A20000-0x0000000005AB2000-memory.dmp

Filesize
584KB

Download
memory/2140-132-0x00000000009A0000-0x0000000000B22000-memory.dmp

Filesize
1.5MB

Download
memory/3872-146-0x0000000005890000-0x000000000592C000-memory.dmp

Filesize
624KB

Download
memory/3872-145-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/5020-138-0x00000000056A0000-0x0000000005706000-memory.dmp

Filesize
408KB

Download
memory/5020-140-0x00000000075C0000-0x0000000007C3A000-memory.dmp

Filesize
6.5MB

Download
memory/5020-141-0x0000000006220000-0x000000000623A000-memory.dmp

Filesize
104KB

Download
memory/5020-139-0x0000000005D30000-0x0000000005D4E000-memory.dmp

Filesize
120KB

Download
memory/5020-137-0x00000000054C0000-0x0000000005526000-memory.dmp

Filesize
408KB

Download
memory/5020-136-0x0000000004E90000-0x00000000054B8000-memory.dmp

Filesize
6.2MB

Download
memory/5020-135-0x0000000004760000-0x0000000004796000-memory.dmp

Filesize
216KB

Download

Analysis

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