asyncrat | a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 20:02

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General

Target

a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe
Size

1.2MB
MD5

0841d5feacdedbb69053d11dd55db16e
SHA1

bf0d19adec40e2bae9a23712811704c3f93eac10
SHA256

a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c
SHA512

95363a965835ca1a20bce0126c1c7f31219550d1c027355f841fdd359d0ef838496f5faff99f3706a546482013feaf2c6324f45246ba9118204143417d44ef8a
SSDEEP

24576:B/3X77uS/bDqWASwX2OpgSEhCgGlEb6zl7OXP3+CJZQxKIF7U+tXZ:B/3XPLXq7SIgB1P6NF7VX

Score

10^/10

asyncrat discovery rat

Malware Config

Signatures

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

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\ArgCount.vbs	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 5088 set thread context of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100

System Location Discovery: System Language Discovery 1 TTPs 2 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	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe
Token: SeDebugPrivilege	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe
Token: SeDebugPrivilege	1524	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100
PID 5088 wrote to memory of 1524	5088	a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe	100

C:\Users\Admin\AppData\Local\Temp\a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe
"C:\Users\Admin\AppData\Local\Temp\a87c8cf8a1169689cb55e2184119bb021974842c8e38355dd3cf830fc98ae98c.exe"
1⤵
- Drops startup file
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5088
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1524

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1524-1194-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download
memory/1524-1196-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/1524-1197-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/1524-1198-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/1524-1199-0x0000000003090000-0x000000000309A000-memory.dmp

Filesize
40KB

Download
memory/1524-1201-0x0000000005B80000-0x0000000005BE6000-memory.dmp

Filesize
408KB

Download
memory/1524-1200-0x0000000005AE0000-0x0000000005B7C000-memory.dmp

Filesize
624KB

Download
memory/5088-19-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-9-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-4-0x00000000059D0000-0x00000000059DA000-memory.dmp

Filesize
40KB

Download
memory/5088-5-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/5088-6-0x0000000005CA0000-0x0000000005D8C000-memory.dmp

Filesize
944KB

Download
memory/5088-7-0x0000000005D90000-0x0000000005E7E000-memory.dmp

Filesize
952KB

Download
memory/5088-11-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-23-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-49-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-47-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-45-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-43-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-41-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-39-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-37-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-35-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-33-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-29-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-27-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-25-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-21-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-2-0x0000000005F40000-0x00000000064E4000-memory.dmp

Filesize
5.6MB

Download
memory/5088-17-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-15-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-13-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-3-0x0000000005A30000-0x0000000005AC2000-memory.dmp

Filesize
584KB

Download
memory/5088-31-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-8-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-63-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-71-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-70-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-67-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-65-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-61-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-59-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-57-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-53-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-51-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-55-0x0000000005D90000-0x0000000005E78000-memory.dmp

Filesize
928KB

Download
memory/5088-1184-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/5088-1185-0x0000000005ED0000-0x0000000005F2E000-memory.dmp

Filesize
376KB

Download
memory/5088-1186-0x00000000065F0000-0x000000000663C000-memory.dmp

Filesize
304KB

Download
memory/5088-1-0x0000000000E90000-0x0000000000FBE000-memory.dmp

Filesize
1.2MB

Download
memory/5088-0-0x000000007523E000-0x000000007523F000-memory.dmp

Filesize
4KB

Download
memory/5088-1187-0x000000007523E000-0x000000007523F000-memory.dmp

Filesize
4KB

Download
memory/5088-1188-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/5088-1189-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download
memory/5088-1190-0x0000000006920000-0x0000000006974000-memory.dmp

Filesize
336KB

Download
memory/5088-1195-0x0000000075230000-0x00000000759E0000-memory.dmp

Filesize
7.7MB

Download