asyncrat | e2a0d9beebcc4b9d317675fe8ec23c972ad54ce53192d841334f5962a47524fb

General

Target

PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe
Size

615KB
MD5

934331eda0b472009322a97523b5bfdd
SHA1

0af4e8f64595d302ba3c5b277403230b73277eaa
SHA256

1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb
SHA512

57ce4f3fa2eab5b3792c83e045eb7a0d820b0c6172017fd41dd12f172f64fe2046b92e8bc7a0acf29d3f7d5b5aa35a3fe5fb60749a9bb07d6656bccd78c41576
SSDEEP

12288:keq4E6mfJiLl9fWcbQkpClS+j80IlSgaFguAGszwTPXC2l93dvp1p7Cph8p:dEkD9pClC3ogaFgrRzwVdvp1pVp

Score

10^/10

asyncrat default discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

ergsea.ydns.eu:7393

Mutex

0Yn3xzTdlCbn

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2796	powershell.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1120 set thread context of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2632	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2796	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	2684	vbc.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1120 wrote to memory of 2796	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	28
PID 1120 wrote to memory of 2796	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	28
PID 1120 wrote to memory of 2796	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	28
PID 1120 wrote to memory of 2796	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	28
PID 1120 wrote to memory of 2632	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	30
PID 1120 wrote to memory of 2632	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	30
PID 1120 wrote to memory of 2632	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	30
PID 1120 wrote to memory of 2632	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	30
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32
PID 1120 wrote to memory of 2684	1120	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	32

C:\Users\Admin\AppData\Local\Temp\PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe
"C:\Users\Admin\AppData\Local\Temp\PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1120
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\DpmrYeeDGcj.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2796
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DpmrYeeDGcj" /XML "C:\Users\Admin\AppData\Local\Temp\tmp89A9.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2632
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab9C51.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp89A9.tmp

Filesize
1KB

MD5
151e8705fac8628641a112f56c340095

SHA1
60f9f74a2734a5c4c5ed549351ef0c55aabe660a

SHA256
21a3723e7ebfa8d273b05f87d6b129b23be4c6d1c5294061c17ef9477b618505

SHA512
01c2c7e57b38ea68abee0a175c1aaa3877c839860b2f5b0bd12b4a9ba3def4cbdc44cf8bb0e5c1374e7ab3273842a80694af1334cc4e85803a874af89cebc206

Download Submit
memory/1120-27-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/1120-1-0x0000000000350000-0x00000000003EE000-memory.dmp

Filesize
632KB

Download
memory/1120-2-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/1120-3-0x0000000000780000-0x000000000079C000-memory.dmp

Filesize
112KB

Download
memory/1120-4-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/1120-5-0x0000000074730000-0x0000000074E1E000-memory.dmp

Filesize
6.9MB

Download
memory/1120-6-0x00000000022F0000-0x0000000002346000-memory.dmp

Filesize
344KB

Download
memory/1120-0-0x000000007473E000-0x000000007473F000-memory.dmp

Filesize
4KB

Download
memory/2684-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2684-24-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2684-26-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2684-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2684-22-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2684-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2684-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2684-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads