asyncrat | da5eb5bceeb347021b50d99bbc43ded3e72f4ede42ee3133f9070a1bc2403581

General

Target

915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe
Size

550KB
MD5

a47355c5131e669569fd038d40ec3b30
SHA1

5c8069a1ee5a606b8c8614606e63c73abaf9d20b
SHA256

915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6
SHA512

6bad6ee4e622273fd67d369a27e8f25cffbc5e38587345cb93597ade4c58225de8245d31cf30edd6a17616b75d5d05c6e8497d4687e0a5d1ea647568bfc81a0f
SSDEEP

12288:Is7nq0Xp2iNUWgMlSYtz8L6guw4YXxtaXryOxRNAeINEFgvMIr:31bfoL342xta3N6

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

192.3.193.136:2023

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/1872-145-0x0000000000400000-0x0000000000412000-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-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4948 set thread context of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe
4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe
4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe
4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe
2104	powershell.exe
2104	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe
Token: SeDebugPrivilege	2104	powershell.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 2104	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	89
PID 4948 wrote to memory of 2104	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	89
PID 4948 wrote to memory of 2104	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	89
PID 4948 wrote to memory of 1416	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	91
PID 4948 wrote to memory of 1416	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	91
PID 4948 wrote to memory of 1416	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	91
PID 4948 wrote to memory of 3944	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	93
PID 4948 wrote to memory of 3944	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	93
PID 4948 wrote to memory of 3944	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	93
PID 4948 wrote to memory of 4072	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	95
PID 4948 wrote to memory of 4072	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	95
PID 4948 wrote to memory of 4072	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	95
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94
PID 4948 wrote to memory of 1872	4948	915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe	94

C:\Users\Admin\AppData\Local\Temp\915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe
"C:\Users\Admin\AppData\Local\Temp\915218971d799dd8d84bcf104a727d40f5bea6456ea20d93d97bcd9e771dabf6.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FOIDdkTkLgtC.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2104
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FOIDdkTkLgtC" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2DF5.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1416
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:3944
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:1872
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
  2⤵
  PID:4072

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp2DF5.tmp

Filesize
1KB

MD5
061588fc539e4cd70f6de82e20577997

SHA1
4fcc7d287c35a56ede0d25cfd4fc488d9539d5c3

SHA256
a1428a659d704806e28e4cb2652bce5c6f5f3c04a5532c458d17e56212c832b1

SHA512
6768a3e8c4d474ed8e5c8fd235a6ee8d83c6c8ee0df481f2d38d2592f9ad9d63fa5f759516cda681e95f33448123b5c7d2f59a795ec5aabf374dc647632b2529

Download Submit
memory/1872-145-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2104-146-0x0000000004CB0000-0x0000000004CD2000-memory.dmp

Filesize
136KB

Download
memory/2104-152-0x00000000062B0000-0x00000000062CE000-memory.dmp

Filesize
120KB

Download
memory/2104-159-0x0000000007330000-0x0000000007338000-memory.dmp

Filesize
32KB

Download
memory/2104-139-0x00000000046B0000-0x00000000046E6000-memory.dmp

Filesize
216KB

Download
memory/2104-158-0x0000000007350000-0x000000000736A000-memory.dmp

Filesize
104KB

Download
memory/2104-142-0x0000000004D70000-0x0000000005398000-memory.dmp

Filesize
6.2MB

Download
memory/2104-157-0x0000000007240000-0x000000000724E000-memory.dmp

Filesize
56KB

Download
memory/2104-156-0x0000000007290000-0x0000000007326000-memory.dmp

Filesize
600KB

Download
memory/2104-155-0x0000000007080000-0x000000000708A000-memory.dmp

Filesize
40KB

Download
memory/2104-154-0x0000000007010000-0x000000000702A000-memory.dmp

Filesize
104KB

Download
memory/2104-153-0x0000000007650000-0x0000000007CCA000-memory.dmp

Filesize
6.5MB

Download
memory/2104-147-0x0000000005590000-0x00000000055F6000-memory.dmp

Filesize
408KB

Download
memory/2104-148-0x0000000005670000-0x00000000056D6000-memory.dmp

Filesize
408KB

Download
memory/2104-149-0x0000000005D00000-0x0000000005D1E000-memory.dmp

Filesize
120KB

Download
memory/2104-150-0x00000000062D0000-0x0000000006302000-memory.dmp

Filesize
200KB

Download
memory/2104-151-0x0000000071490000-0x00000000714DC000-memory.dmp

Filesize
304KB

Download
memory/4948-132-0x0000000000170000-0x0000000000200000-memory.dmp

Filesize
576KB

Download
memory/4948-133-0x0000000005210000-0x00000000057B4000-memory.dmp

Filesize
5.6MB

Download
memory/4948-134-0x0000000004B90000-0x0000000004C22000-memory.dmp

Filesize
584KB

Download
memory/4948-135-0x0000000005070000-0x000000000507A000-memory.dmp

Filesize
40KB

Download
memory/4948-136-0x0000000008B90000-0x0000000008C2C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads