7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1

General

Target
7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe
Size 4.5MB
Sample260528-n3emcset2p
SHA256 7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1
MD5 285ee38278fad50fac72ea93b75d7f7c
SHA1 5d643facb6cd42d96be4dc47901d218f41b0aba6
SHA512 694b5e29684013237faa554873b439b5400ba487bd52967eec65b57bb6703622ce2fa9f193b62faa3c939fd9102733948f2db8569c5a2a327938e8bf89ac0cec
SSDEEP 98304:rGQvyLxP/7a54mElrpeYLoHRC9sIxrV7owtzMY8usKXbnFp8yeWhrenWSc5v:OLt/vnl9ZoxC9soRlzMY8usKXbFp8y3h
TLSH
T1D0261242B2D240F5D516163008BB973AFA75BE864F15CB9B93A4DD2DAE33280BD33395
MD5 SHA1 SHA512 SSDEEP TLSH

Score

10^/10

defense_evasion discovery execution persistence trojan

Malware Config

Signatures

UAC bypass 3 TTPs 1 IoCs

defense_evasion trojan

Bypass User Account Control

T1548.002

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	reg.exe

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File created	C:\Windows\System32\Drivers\Hard5-6.sys	XRnb.exe
File opened for modification	C:\Windows\System32\Drivers\Hard5-6.sys	XRnb.exe

Sets service image path in registry 3 TTPs 1 IoCs

This determines the executable launched when a service starts. It can be used to establish persistence.

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Hard5-6\ImagePath = "\\??\\C:\\Windows\\System32\\Drivers\\Hard5-6.sys"	XRnb.exe

Executes dropped EXE 1 IoCs

pid	Process
3096	XRnb.exe

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Power Settings 1 TTPs 2 IoCs

powercfg controls all configurable power system settings on a Windows system and can be abused to prevent an infected host from locking or shutting down.

persistence

Power Settings

T1653

pid	Process
3596	cmd.exe
2660	powercfg.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\Xr\XRnb.exe	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe

Launches sc.exe 1 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
488	sc.exe

System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powercfg.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
3740	cmd.exe
1816	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
1816	PING.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3096	XRnb.exe
3096	XRnb.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3096	XRnb.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe
Token: SeDebugPrivilege	2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe
Token: SeLoadDriverPrivilege	3096	XRnb.exe
Token: SeShutdownPrivilege	2660	powercfg.exe
Token: SeCreatePagefilePrivilege	2660	powercfg.exe
Token: SeShutdownPrivilege	2660	powercfg.exe
Token: SeCreatePagefilePrivilege	2660	powercfg.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe
2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 804	2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe	80
PID 804 wrote to memory of 488	804	cmd.exe	82
PID 2528 wrote to memory of 3096	2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe	83
PID 2528 wrote to memory of 4872	2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe	84
PID 2528 wrote to memory of 1932	2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe	86
PID 2528 wrote to memory of 3596	2528	7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe	88
PID 3596 wrote to memory of 2660	3596	cmd.exe	90
PID 3096 wrote to memory of 3740	3096	XRnb.exe	91
PID 3740 wrote to memory of 1816	3740	cmd.exe	93

C:\Users\Admin\AppData\Local\Temp\7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe
"C:\Users\Admin\AppData\Local\Temp\7aa9385824375695027c13aad85048ae0c85d24b42dbfc565aeca0022bb148a1.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c sc delete mss1
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:804
- - C:\Windows\SysWOW64\sc.exe
    sc delete mss1
    3⤵
    - Launches sc.exe
    - System Location Discovery: System Language Discovery
    PID:488
- C:\Windows\Xr\XRnb.exe
  C:\Windows\Xr\XRnb.exe
  2⤵
  - Drops file in Drivers directory
  - Sets service image path in registry
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: LoadsDriver
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3096
- - C:\Windows\SYSTEM32\cmd.exe
    cmd /c ping 127.0.0.1 -n 2 > nul & del /f /q "C:\Windows\Xr\XRnb.exe"
    3⤵
    - System Network Configuration Discovery: Internet Connection Discovery
    - Suspicious use of WriteProcessMemory
    PID:3740
  - - C:\Windows\system32\PING.EXE
      ping 127.0.0.1 -n 2
      4⤵
      System Network Configuration Discovery: Internet Connection Discovery
      Runs ping.exe
      PID:1816
- C:\Windows\SysWOW64\reg.exe
  reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v EnableLUA /t REG_DWORD /d 0 /f
  2⤵
  - UAC bypass
  - System Location Discovery: System Language Discovery
  PID:4872
- C:\Windows\SysWOW64\reg.exe
  reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System" /v FilterAdministratorToken /t REG_DWORD /d 0 /f
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1932
- C:\Windows\SysWOW64\cmd.exe
  cmd.exe /c powercfg /h off
  2⤵
  - Power Settings
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3596
- - C:\Windows\SysWOW64\powercfg.exe
    powercfg /h off
    3⤵
    - Power Settings
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2660

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

Power Settings

Privilege Escalation

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

1

T1548

Bypass User Account Control

1

T1548.002

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

Remote System Discovery

1

T1018

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1

T1489

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Downloads

XRnb.exe

Path C:\Windows\Xr\XRnb.exe
Size 3.4MB
SHA256 40e1e75cda60b2b296dd6002e1e56837ef6bf34623a5c93167c6e4d64713545d
MD5 a499fafd506ac8d904cb4062c83346f8
SHA1 4208984bfb96d0291885f75c0acacf4ba270f8ce
SHA512 6afeba6e7cc3519a0b83856864f199c415089e008e8505994c2146ed133a835f3fbe239fda96ae0a91ea9ed9fe8251a3568cdddb0fd74969814ad65cd9949e63
SSDEEP 98304:Ya54mElrpeYLoHRC9sIxrV7owtzMY8usKXbnFp8yeWhrenWSc:wnl9ZoxC9soRlzMY8usKXbFp8y3hrenl
TLSH
T1C1F533E4D64344F9C01BC3B69D85486C70A63BE9DC590CA2B3EEAA1C5DB39BDCCE2541
MD5 SHA1 SHA512 SSDEEP TLSH

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memory/3096-6-0x00007FF899E90000-0x00007FF899E92000-memory.dmp

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memory/3096-5-0x00007FF733E60000-0x00007FF734462000-memory.dmp

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memory/3096-4-0x00007FF733F6E000-0x00007FF7340FF000-memory.dmp

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memory/3096-7-0x00007FF733E60000-0x00007FF734462000-memory.dmp

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memory/3096-8-0x00007FF733E60000-0x00007FF734462000-memory.dmp

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memory/3096-14-0x00007FF733E60000-0x00007FF734462000-memory.dmp

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memory/3096-15-0x00007FF733F6E000-0x00007FF7340FF000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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