asyncrat | 00bcbf44a3a8dfdd43324ad3dc7a868049bc1856237d97307cc1bbec2ce68ffe

General

Target

a67e24a8575521f3eb6601dd6c2de85f.exe
Size

1.1MB
MD5

a67e24a8575521f3eb6601dd6c2de85f
SHA1

4f7e56953e1e47397c277fd23487c3e29932ca55
SHA256

00bcbf44a3a8dfdd43324ad3dc7a868049bc1856237d97307cc1bbec2ce68ffe
SHA512

7ca3482f8ea42fc0554b23d21e277f0d7edaf44a0ba08606bf02af86328d5a1ad18917b47fa3f111c68ab2e267954eb8fccc9b404cf3c1433baf312a80a9c01c

Score

10^/10

asyncrat default persistence rat suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

luispereiralora09.con-ip.com:1990

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
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/364-141-0x0000000000400000-0x0000000000412000-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:

a67e24a8575521f3eb6601dd6c2de85f.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	a67e24a8575521f3eb6601dd6c2de85f.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

a67e24a8575521f3eb6601dd6c2de85f.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Pefyap = "\"C:\\Users\\Admin\\AppData\\Roaming\\Ajzyz\\Pefyap.exe\""	a67e24a8575521f3eb6601dd6c2de85f.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a67e24a8575521f3eb6601dd6c2de85f.exe

description pid process target process

PID 3264 set thread context of 364 3264 a67e24a8575521f3eb6601dd6c2de85f.exe InstallUtil.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.exea67e24a8575521f3eb6601dd6c2de85f.exe

pid process

916 powershell.exe
916 powershell.exe
3264 a67e24a8575521f3eb6601dd6c2de85f.exe
3264 a67e24a8575521f3eb6601dd6c2de85f.exe

description	pid	process	target process
PID 3264 set thread context of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe

pid	process
916	powershell.exe
916	powershell.exe
3264	a67e24a8575521f3eb6601dd6c2de85f.exe
3264	a67e24a8575521f3eb6601dd6c2de85f.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

a67e24a8575521f3eb6601dd6c2de85f.exepowershell.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	3264	a67e24a8575521f3eb6601dd6c2de85f.exe
Token: SeDebugPrivilege	916	powershell.exe
Token: SeDebugPrivilege	364	InstallUtil.exe

Suspicious use of WriteProcessMemory 11 IoCs

Processes:

a67e24a8575521f3eb6601dd6c2de85f.exe

description	pid	process	target process
PID 3264 wrote to memory of 916	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	powershell.exe
PID 3264 wrote to memory of 916	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	powershell.exe
PID 3264 wrote to memory of 916	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	powershell.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe
PID 3264 wrote to memory of 364	3264	a67e24a8575521f3eb6601dd6c2de85f.exe	InstallUtil.exe

C:\Users\Admin\AppData\Local\Temp\a67e24a8575521f3eb6601dd6c2de85f.exe
"C:\Users\Admin\AppData\Local\Temp\a67e24a8575521f3eb6601dd6c2de85f.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3264

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMgAwAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:916

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:364

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

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

memory/364-140-0x0000000000000000-mapping.dmp

Download
memory/364-143-0x0000000006250000-0x00000000067F4000-memory.dmp

Filesize
5.6MB

Download
memory/364-142-0x0000000005C00000-0x0000000005C9C000-memory.dmp

Filesize
624KB

Download
memory/364-141-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/916-136-0x00000000058F0000-0x0000000005956000-memory.dmp

Filesize
408KB

Download
memory/916-135-0x0000000005880000-0x00000000058E6000-memory.dmp

Filesize
408KB

Download
memory/916-137-0x0000000005700000-0x000000000571E000-memory.dmp

Filesize
120KB

Download
memory/916-138-0x0000000007440000-0x0000000007ABA000-memory.dmp

Filesize
6.5MB

Download
memory/916-139-0x00000000062A0000-0x00000000062BA000-memory.dmp

Filesize
104KB

Download
memory/916-134-0x0000000005780000-0x00000000057A2000-memory.dmp

Filesize
136KB

Download
memory/916-133-0x0000000004F70000-0x0000000005598000-memory.dmp

Filesize
6.2MB

Download
memory/916-132-0x0000000002840000-0x0000000002876000-memory.dmp

Filesize
216KB

Download
memory/916-131-0x0000000000000000-mapping.dmp

Download
memory/3264-130-0x0000000000BF0000-0x0000000000D18000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads