asyncrat | 4e75cb29be96283f4f05a840c4ed6ff23ed3ff24fcf32af2845a5b187261439d

General

Target

33dad047fbc03f81e8a9e63d99a7efe4.exe
Size

502KB
MD5

33dad047fbc03f81e8a9e63d99a7efe4
SHA1

6f3ae296412b498835b5ab3e9318062f9c7d7f2f
SHA256

4e75cb29be96283f4f05a840c4ed6ff23ed3ff24fcf32af2845a5b187261439d
SHA512

9b6237231d97b8b3988c0831cf91c74f1c52f2741c319076200159a3bf5db13a4ba0e977c0c45c5df25b5608470c3d482fce36951ab29d4103b4c6441b98e4e6

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

10.14.204.30:2022

10.14.204.30:2019

10.14.204.30:5631

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

Processes:

resource	yara_rule
behavioral2/memory/3956-142-0x0000000000400000-0x0000000000412000-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

Processes:

33dad047fbc03f81e8a9e63d99a7efe4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	33dad047fbc03f81e8a9e63d99a7efe4.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

33dad047fbc03f81e8a9e63d99a7efe4.exe

description pid process target process

PID 3116 set thread context of 3956 3116 33dad047fbc03f81e8a9e63d99a7efe4.exe 33dad047fbc03f81e8a9e63d99a7efe4.exe
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 4 IoCs

Processes:

powershell.exe33dad047fbc03f81e8a9e63d99a7efe4.exe

pid process

4268 powershell.exe
4268 powershell.exe
3116 33dad047fbc03f81e8a9e63d99a7efe4.exe
3116 33dad047fbc03f81e8a9e63d99a7efe4.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exe33dad047fbc03f81e8a9e63d99a7efe4.exe

description pid process

Token: SeDebugPrivilege 4268 powershell.exe
Token: SeDebugPrivilege 3116 33dad047fbc03f81e8a9e63d99a7efe4.exe

description	pid	process	target process
PID 3116 set thread context of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe

pid	process
4268	powershell.exe
4268	powershell.exe
3116	33dad047fbc03f81e8a9e63d99a7efe4.exe
3116	33dad047fbc03f81e8a9e63d99a7efe4.exe

description	pid	process
Token: SeDebugPrivilege	4268	powershell.exe
Token: SeDebugPrivilege	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

33dad047fbc03f81e8a9e63d99a7efe4.exe

description	pid	process	target process
PID 3116 wrote to memory of 4268	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	powershell.exe
PID 3116 wrote to memory of 4268	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	powershell.exe
PID 3116 wrote to memory of 4268	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	powershell.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe
PID 3116 wrote to memory of 3956	3116	33dad047fbc03f81e8a9e63d99a7efe4.exe	33dad047fbc03f81e8a9e63d99a7efe4.exe

C:\Users\Admin\AppData\Local\Temp\33dad047fbc03f81e8a9e63d99a7efe4.exe
"C:\Users\Admin\AppData\Local\Temp\33dad047fbc03f81e8a9e63d99a7efe4.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3116

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4268

C:\Users\Admin\AppData\Local\Temp\33dad047fbc03f81e8a9e63d99a7efe4.exe
C:\Users\Admin\AppData\Local\Temp\33dad047fbc03f81e8a9e63d99a7efe4.exe
2⤵
PID:3956

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\33dad047fbc03f81e8a9e63d99a7efe4.exe.log
Filesize
921B

MD5
cd1832602f786d9cd079570687242b7f

SHA1
c3efd7817536baa0400f8defd8bf72b94f3954b9

SHA256
67b172ef0e303ff3eaae46d2927e197b636772ab6a359d3e440c8209934f8022

SHA512
780150109ca3b56ee1ab94329f828be9cd79506c943cf0549028660541ce8674fd39ca603341504f9ac6e17493a771126a7eb8cfb6966413bd34d94d33ef71e3

Download Submit
memory/3116-130-0x0000000000770000-0x00000000007F4000-memory.dmp

Filesize
528KB

Download
memory/3116-140-0x0000000005CF0000-0x0000000005D82000-memory.dmp

Filesize
584KB

Download
memory/3956-142-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3956-141-0x0000000000000000-mapping.dmp

Download
memory/4268-136-0x0000000005D90000-0x0000000005DF6000-memory.dmp

Filesize
408KB

Download
memory/4268-135-0x0000000005CB0000-0x0000000005D16000-memory.dmp

Filesize
408KB

Download
memory/4268-137-0x0000000006250000-0x000000000626E000-memory.dmp

Filesize
120KB

Download
memory/4268-138-0x0000000007A90000-0x000000000810A000-memory.dmp

Filesize
6.5MB

Download
memory/4268-139-0x0000000006750000-0x000000000676A000-memory.dmp

Filesize
104KB

Download
memory/4268-134-0x0000000005AD0000-0x0000000005AF2000-memory.dmp

Filesize
136KB

Download
memory/4268-133-0x0000000005350000-0x0000000005978000-memory.dmp

Filesize
6.2MB

Download
memory/4268-132-0x0000000004CD0000-0x0000000004D06000-memory.dmp

Filesize
216KB

Download
memory/4268-131-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads