hawkeye | a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs

collection

Email Collection

T1114

description	ioc	Process
Key opened	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts	vbc.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
21	whatismyipaddress.com
23	whatismyipaddress.com

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 4740 set thread context of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4680 set thread context of 4504	4680	RegAsm.exe	93
PID 4680 set thread context of 3588	4680	RegAsm.exe	94

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	dw20.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dw20.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

pid	Process
3640	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3588	vbc.exe
3588	vbc.exe
4680	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4680	RegAsm.exe
Token: SeRestorePrivilege	4272	dw20.exe
Token: SeBackupPrivilege	4272	dw20.exe
Token: SeBackupPrivilege	4272	dw20.exe
Token: SeBackupPrivilege	4272	dw20.exe
Token: SeBackupPrivilege	4272	dw20.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4680	RegAsm.exe

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 4740 wrote to memory of 3640	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	87
PID 4740 wrote to memory of 3640	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	87
PID 4740 wrote to memory of 3640	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	87
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4740 wrote to memory of 4680	4740	a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe	90
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 4504	4680	RegAsm.exe	93
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 3588	4680	RegAsm.exe	94
PID 4680 wrote to memory of 4272	4680	RegAsm.exe	97
PID 4680 wrote to memory of 4272	4680	RegAsm.exe	97
PID 4680 wrote to memory of 4272	4680	RegAsm.exe	97

C:\Users\Admin\AppData\Local\Temp\a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe
"C:\Users\Admin\AppData\Local\Temp\a255f84c37ae5dfa20453a9dafdc540f8bde56059e630399ce4bc5c1502a5296.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4740
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Update\VDFFSHBXCTFGHDNMBGKZXDDXNVMNCCXBGBNXJNCJM" /XML "C:\Users\Admin\AppData\Local\Temp\z998"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:3640
- C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v2.0.50727\RegAsm.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4680
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holdermail.txt"
    3⤵
    - Accesses Microsoft Outlook accounts
    - System Location Discovery: System Language Discovery
    PID:4504
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe
    C:\Windows\Microsoft.NET\Framework\v2.0.50727\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\holderwb.txt"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    PID:3588
- - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
    dw20.exe -x -s 2628
    3⤵
    - Drops file in Windows directory
    - System Location Discovery: System Language Discovery
    - Checks processor information in registry
    - Enumerates system info in registry
    - Suspicious use of AdjustPrivilegeToken
    PID:4272

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

Scheduled Task/Job

T1053

Scheduled Task

Persistence

Scheduled Task/Job

T1053

Scheduled Task

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery