ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4

General

Target
ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe
Size 2.0MB
Sample260822-tkfplawejd
SHA256 ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4
MD5 6c86b379d319eb7c4a11dd1e7b1d1764
SHA1 e9bbdc39ee29a697a1480d9ec659de555dab395b
SHA512 d81aec22daaf9d81b14cd85f9a1c382c110b288f507e5c3e657a33c3fca9471523494a1687b57a01932d08c81d99eb2b296d2449729c59024e9b7e278ff25743
SSDEEP 24576:ATJhrtEG78k19P3wf248kE9tsoIW6+YGPVS1ADUUcqbSmW1LaCwmUjK9Xq1sUGRc:ATJT78UC3UcqLoSK9NUt
TLSH
T16EA56B23E84258A1C455377136BA173EB9735B204D30DB63EF98FE7A3D726A34A1A10D
MD5 SHA1 SHA512 SSDEEP TLSH

Score

8^/10

defense_evasion discovery execution persistence

Malware Config

Signatures

Sets service image path in registry 3 TTPs 2 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\Nr7F9\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\Nr7F9.sys"	HOo2S.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\6qtD6\ImagePath = "\\??\\C:\\Users\\Admin\\AppData\\Local\\Temp\\6qtD6.sys"	HOo2S.exe

Executes dropped EXE 1 IoCs

pid	Process
3480	HOo2S.exe

Executes a command shell one-liner 1 TTPs 5 IoCs

Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

execution

Windows Command Shell

T1059.003

pid	Process
4952	cmd.exe
3376	cmd.exe
2676	cmd.exe
4400	cmd.exe
1020	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 10 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	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	taskkill.exe

Kills process with taskkill 4 IoCs

defense_evasion

pid	Process
5140	taskkill.exe
4764	taskkill.exe
6136	taskkill.exe
8	taskkill.exe

Suspicious behavior: LoadsDriver 1 IoCs

pid	Process
3480	HOo2S.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeLoadDriverPrivilege	3480	HOo2S.exe
Token: SeDebugPrivilege	6136	taskkill.exe
Token: SeDebugPrivilege	8	taskkill.exe
Token: SeDebugPrivilege	5140	taskkill.exe
Token: SeDebugPrivilege	4764	taskkill.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
3680	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe
3680	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3680 wrote to memory of 3376	3680	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe	89
PID 3376 wrote to memory of 3480	3376	cmd.exe	91
PID 3680 wrote to memory of 2676	3680	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe	92
PID 3680 wrote to memory of 4952	3680	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe	93
PID 3680 wrote to memory of 1020	3680	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe	94
PID 3680 wrote to memory of 4400	3680	ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe	95
PID 4952 wrote to memory of 4764	4952	cmd.exe	100
PID 4400 wrote to memory of 5140	4400	cmd.exe	101
PID 1020 wrote to memory of 6136	1020	cmd.exe	102
PID 2676 wrote to memory of 8	2676	cmd.exe	103

C:\Users\Admin\AppData\Local\Temp\ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe
"C:\Users\Admin\AppData\Local\Temp\ad88c242b3530ea795adf6e4ae6ad1cf17c350280c5afdf23bfcbb797aa8ecb4.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3680
- C:\Windows\SysWOW64\cmd.exe
  cmd /k C: & cd C:\Users\Admin\AppData\Local\Temp\&HOo2S.exe 6qtD6.sys Nr7F9.sys&exit
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3376
- - C:\Users\Admin\AppData\Local\Temp\HOo2S.exe
    HOo2S.exe 6qtD6.sys Nr7F9.sys
    3⤵
    - Sets service image path in registry
    - Executes dropped EXE
    - Suspicious behavior: LoadsDriver
    - Suspicious use of AdjustPrivilegeToken
    PID:3480
- C:\Windows\SysWOW64\cmd.exe
  cmd /k C: & taskkill /F /IM WmiPrvSE.exe
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2676
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:8
- C:\Windows\SysWOW64\cmd.exe
  cmd /k C: & taskkill /F /IM WmiPrvSE.exe
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4952
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4764
- C:\Windows\SysWOW64\cmd.exe
  cmd /k C: & taskkill /F /IM WmiPrvSE.exe
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1020
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:6136
- C:\Windows\SysWOW64\cmd.exe
  cmd /k C: & taskkill /F /IM WmiPrvSE.exe
  2⤵
  - Executes a command shell one-liner
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4400
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /F /IM WmiPrvSE.exe
    3⤵
    - System Location Discovery: System Language Discovery
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:5140

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

Windows Command Shell

1

T1059.003

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

HOo2S.exe

Path C:\Users\Admin\AppData\Local\Temp\HOo2S.exe
Size 19KB
SHA256 9dd7c4d245afd85ca1fbaf786d629e1a941616c6f6fb8cb55300d3fa5cacdb79
MD5 5a553b1c9a9dd4a03331d9b33951adad
SHA1 c26e3652ef52539924d873631295a0bd74f4791f
SHA512 f02709fb20e4646e8b7342983d3ba9428f824cde84d9223d55be300d74e8a2d60388ee603eb25e52f92a412e0467d6cc9ff603f3b506afb1fb286e391d82a567
SSDEEP 192:iG6ETVvDoPrBerUrNEkZfv4+xWu95+2GP5A+7iVYIE97Tf1oM7Fdq8c6f3b0BFnP:iVEJEPGUrNJhxWuPwP5AJqbxxinRmW
TLSH
T17592081313F9515DF0B69B7A8FFA89136632BD122231DAAE31C1C1AE1CB2A815534B33
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/3680-0-0x00000000004EB000-0x00000000004EC000-memory.dmp

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memory/3680-4-0x0000000000400000-0x0000000000647000-memory.dmp

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memory/3680-7-0x0000000000400000-0x0000000000647000-memory.dmp

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memory/3680-8-0x0000000000400000-0x0000000000647000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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