asyncrat | b3b271156a06d73e592fae8212649f18d252d2afc06383a02a6adea960e05064

General

Target

RFQ 20212210_091001-0010020010.exe
Size

715KB
MD5

b04e8b626ce57af3135058c7375409d2
SHA1

494acdaf1d6dec1c52660a865f859a4178b06660
SHA256

b3b271156a06d73e592fae8212649f18d252d2afc06383a02a6adea960e05064
SHA512

ff70a3167c738dcf2040fb117ef5f753848d5e4f33cbc9b3e88f4812863c05207763ea032418ace37241e433fe8dadcfd8704c9e3865fd0e9717b2df7460bec6

Score

10^/10

asyncrat default evasion rat suricata trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

cigdem5.duckdns.org:6606

cigdem5.duckdns.org:7707

cigdem5.duckdns.org:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

anti_vm
false
bsod
false
delay
3
install
false
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112
Windows security bypass 2 TTPs
evasion trojan

Disabling Security Tools
T1089

Modify Registry
T1112
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/2680-127-0x00000000061E0000-0x00000000061EB000-memory.dmp	asyncrat

Windows security modification 2 TTPs 3 IoCs

evasion trojan

Disabling Security Tools

T1089

Modify Registry

T1112

Processes:

RFQ 20212210_091001-0010020010.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths	RFQ 20212210_091001-0010020010.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions	RFQ 20212210_091001-0010020010.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows Defender\Exclusions\Paths\C:\Users\Admin\AppData\Local\Temp\RFQ 20212210_091001-0010020010.exe = "0"	RFQ 20212210_091001-0010020010.exe

Checks whether UAC is enabled 1 TTPs 2 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

RFQ 20212210_091001-0010020010.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	RFQ 20212210_091001-0010020010.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RFQ 20212210_091001-0010020010.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 3 IoCs

Processes:

powershell.exe

pid process

3932 powershell.exe
3932 powershell.exe
3932 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RFQ 20212210_091001-0010020010.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2680 RFQ 20212210_091001-0010020010.exe
Token: SeDebugPrivilege 3932 powershell.exe

pid	process
3932	powershell.exe
3932	powershell.exe
3932	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2680	RFQ 20212210_091001-0010020010.exe
Token: SeDebugPrivilege	3932	powershell.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

RFQ 20212210_091001-0010020010.exe

description	pid	process	target process
PID 2680 wrote to memory of 3932	2680	RFQ 20212210_091001-0010020010.exe	powershell.exe
PID 2680 wrote to memory of 3932	2680	RFQ 20212210_091001-0010020010.exe	powershell.exe
PID 2680 wrote to memory of 3932	2680	RFQ 20212210_091001-0010020010.exe	powershell.exe

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

Processes:

RFQ 20212210_091001-0010020010.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	RFQ 20212210_091001-0010020010.exe

C:\Users\Admin\AppData\Local\Temp\RFQ 20212210_091001-0010020010.exe
"C:\Users\Admin\AppData\Local\Temp\RFQ 20212210_091001-0010020010.exe"
1⤵
- Windows security modification
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
- System policy modification
PID:2680

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\RFQ 20212210_091001-0010020010.exe" -Force
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3932

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Bypass User Account Control

1

T1088

Defense Evasion

Bypass User Account Control

1

T1088

Disabling Security Tools

3

T1089

Modify Registry

4

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/2680-127-0x00000000061E0000-0x00000000061EB000-memory.dmp

Filesize
44KB

Download
memory/2680-117-0x0000000002D80000-0x0000000002D81000-memory.dmp

Filesize
4KB

Download
memory/2680-118-0x00000000054F0000-0x00000000054F1000-memory.dmp

Filesize
4KB

Download
memory/2680-119-0x0000000002D90000-0x0000000002D93000-memory.dmp

Filesize
12KB

Download
memory/2680-123-0x0000000006100000-0x0000000006157000-memory.dmp

Filesize
348KB

Download
memory/2680-124-0x0000000006660000-0x0000000006661000-memory.dmp

Filesize
4KB

Download
memory/2680-125-0x0000000006260000-0x0000000006261000-memory.dmp

Filesize
4KB

Download
memory/2680-115-0x0000000000B80000-0x0000000000B81000-memory.dmp

Filesize
4KB

Download
memory/3932-132-0x0000000006EA0000-0x0000000006EA1000-memory.dmp

Filesize
4KB

Download
memory/3932-138-0x0000000007B30000-0x0000000007B31000-memory.dmp

Filesize
4KB

Download
memory/3932-128-0x0000000003120000-0x0000000003121000-memory.dmp

Filesize
4KB

Download
memory/3932-130-0x0000000004A00000-0x0000000004A01000-memory.dmp

Filesize
4KB

Download
memory/3932-131-0x00000000074E0000-0x00000000074E1000-memory.dmp

Filesize
4KB

Download
memory/3932-133-0x0000000006EA2000-0x0000000006EA3000-memory.dmp

Filesize
4KB

Download
memory/3932-126-0x0000000000000000-mapping.dmp

Download
memory/3932-134-0x0000000007470000-0x0000000007471000-memory.dmp

Filesize
4KB

Download
memory/3932-135-0x0000000007B80000-0x0000000007B81000-memory.dmp

Filesize
4KB

Download
memory/3932-136-0x0000000007CF0000-0x0000000007CF1000-memory.dmp

Filesize
4KB

Download
memory/3932-137-0x0000000007D70000-0x0000000007D71000-memory.dmp

Filesize
4KB

Download
memory/3932-129-0x0000000003120000-0x0000000003121000-memory.dmp

Filesize
4KB

Download
memory/3932-139-0x0000000008590000-0x0000000008591000-memory.dmp

Filesize
4KB

Download
memory/3932-140-0x00000000085E0000-0x00000000085E1000-memory.dmp

Filesize
4KB

Download
memory/3932-142-0x0000000003120000-0x0000000003121000-memory.dmp

Filesize
4KB

Download
memory/3932-149-0x00000000094B0000-0x00000000094E3000-memory.dmp

Filesize
204KB

Download
memory/3932-156-0x00000000087B0000-0x00000000087B1000-memory.dmp

Filesize
4KB

Download
memory/3932-161-0x00000000095E0000-0x00000000095E1000-memory.dmp

Filesize
4KB

Download
memory/3932-162-0x000000007FA00000-0x000000007FA01000-memory.dmp

Filesize
4KB

Download
memory/3932-163-0x0000000006EA3000-0x0000000006EA4000-memory.dmp

Filesize
4KB

Download
memory/3932-164-0x00000000097F0000-0x00000000097F1000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads