asyncrat | 70dc3a05f4d6138c0a26d6e05d85cadcfddef54db01d6cb48fcb2ff686de2f0a

General

Target

BLQuote_'PO#385995790.exe
Size

392KB
MD5

837f18b7850efc1d72e08b8296665951
SHA1

f8764fe781498410e66bde0aacb422cc46bd4dd5
SHA256

70dc3a05f4d6138c0a26d6e05d85cadcfddef54db01d6cb48fcb2ff686de2f0a
SHA512

ced510b32a57ff55448c4d8c82fe6fe344214b2477f61a771008cc4b92b4050c249619ff581156d3fb83ad6aded6025900704559d0dc1fadc9f7d04e2b225c99
SSDEEP

6144:1lpSV36ggqbX5FPKXfRKQ/UahtFu1KJSGtX/Ke4ERP68MjtriKFuMfl0oj6:1lpmlbX5xK0QMaLJ7n4aS8MjtDlt6

Score

10^/10

asyncrat default discovery evasion execution rat trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

69.174.100.131:6606

Mutex

abkZfsCYRZhk

Attributes

delay
10
install
false
install_file
order.exe
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

UAC bypass 3 TTPs 1 IoCs

evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	BLQuote_'PO#385995790.exe

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
2252	powershell.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	BLQuote_'PO#385995790.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	BLQuote_'PO#385995790.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1636 set thread context of 2820	1636	BLQuote_'PO#385995790.exe	31

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 1 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	installutil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2252	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	powershell.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 2252	1636	BLQuote_'PO#385995790.exe	29
PID 1636 wrote to memory of 2252	1636	BLQuote_'PO#385995790.exe	29
PID 1636 wrote to memory of 2252	1636	BLQuote_'PO#385995790.exe	29
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2820	1636	BLQuote_'PO#385995790.exe	31
PID 1636 wrote to memory of 2932	1636	BLQuote_'PO#385995790.exe	32
PID 1636 wrote to memory of 2932	1636	BLQuote_'PO#385995790.exe	32
PID 1636 wrote to memory of 2932	1636	BLQuote_'PO#385995790.exe	32

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	BLQuote_'PO#385995790.exe

C:\Users\Admin\AppData\Local\Temp\BLQuote_'PO#385995790.exe
"C:\Users\Admin\AppData\Local\Temp\BLQuote_'PO#385995790.exe"
1⤵
- UAC bypass
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1636
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\BLQuote_'PO#385995790.exe" -Force
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2252
- 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
  PID:2820
- C:\Windows\system32\WerFault.exe
  C:\Windows\system32\WerFault.exe -u -p 1636 -s 628
  2⤵
  PID:2932

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

1

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

2

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

memory/1636-1-0x0000000001160000-0x00000000011C6000-memory.dmp

Filesize
408KB

Download
memory/1636-2-0x0000000000290000-0x00000000002F4000-memory.dmp

Filesize
400KB

Download
memory/1636-3-0x00000000002F0000-0x0000000000354000-memory.dmp

Filesize
400KB

Download
memory/1636-4-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/1636-26-0x000007FEF5B00000-0x000007FEF64EC000-memory.dmp

Filesize
9.9MB

Download
memory/1636-25-0x000007FEF5B03000-0x000007FEF5B04000-memory.dmp

Filesize
4KB

Download
memory/1636-0-0x000007FEF5B03000-0x000007FEF5B04000-memory.dmp

Filesize
4KB

Download
memory/2252-22-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2252-24-0x0000000002D50000-0x0000000002DD0000-memory.dmp

Filesize
512KB

Download
memory/2252-19-0x0000000002D50000-0x0000000002DD0000-memory.dmp

Filesize
512KB

Download
memory/2252-23-0x0000000001F40000-0x0000000001F48000-memory.dmp

Filesize
32KB

Download
memory/2820-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2820-15-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2820-13-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2820-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2820-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2820-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2820-11-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2820-9-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads