amadey | 929afe073d4068f4269719a986b03cdd85b7cc1da969d7ac65e6b2f711e616c2

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	birge.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	CG9W5XQk.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\ACPI\DSDT\VBOX__	WlndowsDraiver-Ver5.7.2.0.exe

Downloads MZ/PE file

Executes dropped EXE 13 IoCs

pid	Process
5040	Player31.exe
2324	birge.exe
1348	ly.exe
2584	nbveek.exe
1532	ly.exe
1344	pb1111.exe
3672	random.exe
2360	random.exe
2212	CG9W5XQk.exe
2744	9o37RBZj.exe
752	nbveek.exe
4252	nbveek.exe
4232	WlndowsDraiver-Ver5.7.2.0.exe

VMProtect packed file 3 IoCs

Detects executables packed with VMProtect commercial packer.

vmprotect

resource	yara_rule
behavioral2/files/0x0006000000023163-160.dat	vmprotect
behavioral2/files/0x0006000000023163-161.dat	vmprotect
behavioral2/memory/1344-162-0x0000000140000000-0x000000014061E000-memory.dmp	vmprotect

Checks BIOS information in registry 2 TTPs 6 IoCs

BIOS 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\SystemBiosVersion	birge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	birge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	CG9W5XQk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	CG9W5XQk.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	WlndowsDraiver-Ver5.7.2.0.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\VideoBiosVersion	WlndowsDraiver-Ver5.7.2.0.exe

Checks computer location settings 2 TTPs 7 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	nbveek.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	ly.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	random.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	birge.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	CG9W5XQk.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	file.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	Player31.exe

Loads dropped DLL 7 IoCs

pid	Process
4888	rundll32.exe
4580	rundll32.exe
2324	birge.exe
2324	birge.exe
2324	birge.exe
1504	rundll32.exe
4428	rundll32.exe

Modifies file permissions 1 TTPs 3 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
2136	icacls.exe
3528	icacls.exe
4384	icacls.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Themida packer 20 IoCs

Detects Themida, an advanced Windows software protection system.

themida

resource	yara_rule
behavioral2/files/0x0008000000023184-185.dat	themida
behavioral2/files/0x0008000000023184-186.dat	themida
behavioral2/memory/2212-187-0x00007FF607D20000-0x00007FF608F92000-memory.dmp	themida
behavioral2/memory/2212-188-0x00007FF607D20000-0x00007FF608F92000-memory.dmp	themida
behavioral2/memory/2212-195-0x00007FF607D20000-0x00007FF608F92000-memory.dmp	themida
behavioral2/memory/2212-196-0x00007FF607D20000-0x00007FF608F92000-memory.dmp	themida
behavioral2/memory/2212-197-0x00007FF607D20000-0x00007FF608F92000-memory.dmp	themida
behavioral2/memory/2212-201-0x00007FF607D20000-0x00007FF608F92000-memory.dmp	themida
behavioral2/files/0x0008000000023182-211.dat	themida
behavioral2/memory/2212-212-0x00007FF607D20000-0x00007FF608F92000-memory.dmp	themida
behavioral2/files/0x0008000000023182-214.dat	themida
behavioral2/memory/4232-215-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-216-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-217-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-219-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-220-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-221-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-222-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-223-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida
behavioral2/memory/4232-224-0x00007FF6E2370000-0x00007FF6E35E2000-memory.dmp	themida

Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
spyware

Data from Local System
T1005

Credentials in Files
T1081
Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 3 IoCs

evasion trojan

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	birge.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	CG9W5XQk.exe
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	WlndowsDraiver-Ver5.7.2.0.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs

pid	Process
2324	birge.exe

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

System Information Discovery
T1082

Program crash 3 IoCs

pid	pid_target	Process	procid_target
4120	4888	WerFault.exe	102
4260	4580	WerFault.exe	112
4920	4428	WerFault.exe	126

Creates scheduled task(s) 1 TTPs 2 IoCs

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

persistence

Scheduled Task

pid	Process
216	schtasks.exe
736	schtasks.exe

Script User-Agent 2 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	8	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)
HTTP User-Agent header	29	Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5)

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2324	birge.exe
2324	birge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1460 wrote to memory of 5040	1460	file.exe	81
PID 1460 wrote to memory of 5040	1460	file.exe	81
PID 1460 wrote to memory of 5040	1460	file.exe	81
PID 1460 wrote to memory of 2324	1460	file.exe	82
PID 1460 wrote to memory of 2324	1460	file.exe	82
PID 1460 wrote to memory of 2324	1460	file.exe	82
PID 1460 wrote to memory of 1348	1460	file.exe	83
PID 1460 wrote to memory of 1348	1460	file.exe	83
PID 1460 wrote to memory of 1348	1460	file.exe	83
PID 5040 wrote to memory of 2584	5040	Player31.exe	85
PID 5040 wrote to memory of 2584	5040	Player31.exe	85
PID 5040 wrote to memory of 2584	5040	Player31.exe	85
PID 2584 wrote to memory of 216	2584	nbveek.exe	86
PID 2584 wrote to memory of 216	2584	nbveek.exe	86
PID 2584 wrote to memory of 216	2584	nbveek.exe	86
PID 1348 wrote to memory of 1532	1348	ly.exe	87
PID 1348 wrote to memory of 1532	1348	ly.exe	87
PID 1348 wrote to memory of 1532	1348	ly.exe	87
PID 2584 wrote to memory of 3208	2584	nbveek.exe	89
PID 2584 wrote to memory of 3208	2584	nbveek.exe	89
PID 2584 wrote to memory of 3208	2584	nbveek.exe	89
PID 3208 wrote to memory of 812	3208	cmd.exe	92
PID 3208 wrote to memory of 812	3208	cmd.exe	92
PID 3208 wrote to memory of 812	3208	cmd.exe	92
PID 3208 wrote to memory of 4444	3208	cmd.exe	93
PID 3208 wrote to memory of 4444	3208	cmd.exe	93
PID 3208 wrote to memory of 4444	3208	cmd.exe	93
PID 3208 wrote to memory of 3696	3208	cmd.exe	94
PID 3208 wrote to memory of 3696	3208	cmd.exe	94
PID 3208 wrote to memory of 3696	3208	cmd.exe	94
PID 3208 wrote to memory of 3924	3208	cmd.exe	95
PID 3208 wrote to memory of 3924	3208	cmd.exe	95
PID 3208 wrote to memory of 3924	3208	cmd.exe	95
PID 3208 wrote to memory of 1840	3208	cmd.exe	96
PID 3208 wrote to memory of 1840	3208	cmd.exe	96
PID 3208 wrote to memory of 1840	3208	cmd.exe	96
PID 3208 wrote to memory of 4556	3208	cmd.exe	97
PID 3208 wrote to memory of 4556	3208	cmd.exe	97
PID 3208 wrote to memory of 4556	3208	cmd.exe	97
PID 2584 wrote to memory of 1344	2584	nbveek.exe	98
PID 2584 wrote to memory of 1344	2584	nbveek.exe	98
PID 3112 wrote to memory of 4888	3112	rundll32.exe	102
PID 3112 wrote to memory of 4888	3112	rundll32.exe	102
PID 3112 wrote to memory of 4888	3112	rundll32.exe	102
PID 2584 wrote to memory of 3672	2584	nbveek.exe	106
PID 2584 wrote to memory of 3672	2584	nbveek.exe	106
PID 2584 wrote to memory of 3672	2584	nbveek.exe	106
PID 3672 wrote to memory of 2360	3672	random.exe	108
PID 3672 wrote to memory of 2360	3672	random.exe	108
PID 3672 wrote to memory of 2360	3672	random.exe	108
PID 4928 wrote to memory of 4580	4928	rundll32.exe	112
PID 4928 wrote to memory of 4580	4928	rundll32.exe	112
PID 4928 wrote to memory of 4580	4928	rundll32.exe	112
PID 2324 wrote to memory of 2212	2324	birge.exe	118
PID 2324 wrote to memory of 2212	2324	birge.exe	118
PID 2324 wrote to memory of 2744	2324	birge.exe	119
PID 2324 wrote to memory of 2744	2324	birge.exe	119
PID 2744 wrote to memory of 4304	2744	9o37RBZj.exe	120
PID 2744 wrote to memory of 4304	2744	9o37RBZj.exe	120
PID 4304 wrote to memory of 864	4304	cmd.exe	121
PID 4304 wrote to memory of 864	4304	cmd.exe	121
PID 2212 wrote to memory of 736	2212	CG9W5XQk.exe	122
PID 2212 wrote to memory of 736	2212	CG9W5XQk.exe	122
PID 2584 wrote to memory of 1504	2584	nbveek.exe	125

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1460
- C:\Users\Admin\AppData\Local\Temp\Player31.exe
  "C:\Users\Admin\AppData\Local\Temp\Player31.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:5040
- - C:\Users\Admin\AppData\Local\Temp\16de06bfb4\nbveek.exe
    "C:\Users\Admin\AppData\Local\Temp\16de06bfb4\nbveek.exe"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Suspicious use of WriteProcessMemory
    PID:2584
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 1 /TN nbveek.exe /TR "C:\Users\Admin\AppData\Local\Temp\16de06bfb4\nbveek.exe" /F
      4⤵
      Creates scheduled task(s)
      PID:216
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k echo Y|CACLS "nbveek.exe" /P "Admin:N"&&CACLS "nbveek.exe" /P "Admin:R" /E&&echo Y|CACLS "..\16de06bfb4" /P "Admin:N"&&CACLS "..\16de06bfb4" /P "Admin:R" /E&&Exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3208
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo Y"
        5⤵
        
        PID:812
    - - C:\Windows\SysWOW64\cacls.exe
        
        CACLS "nbveek.exe" /P "Admin:N"
        5⤵
        
        PID:4444
    - - C:\Windows\SysWOW64\cacls.exe
        
        CACLS "nbveek.exe" /P "Admin:R" /E
        5⤵
        
        PID:3696
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /S /D /c" echo Y"
        5⤵
        
        PID:3924
    - - C:\Windows\SysWOW64\cacls.exe
        
        CACLS "..\16de06bfb4" /P "Admin:N"
        5⤵
        
        PID:1840
    - - C:\Windows\SysWOW64\cacls.exe
        
        CACLS "..\16de06bfb4" /P "Admin:R" /E
        5⤵
        
        PID:4556
  - - C:\Users\Admin\AppData\Local\Temp\1000058001\pb1111.exe
      "C:\Users\Admin\AppData\Local\Temp\1000058001\pb1111.exe"
      4⤵
      Executes dropped EXE
      PID:1344
  - - C:\Users\Admin\AppData\Local\Temp\1000060001\random.exe
      "C:\Users\Admin\AppData\Local\Temp\1000060001\random.exe"
      4⤵
      Executes dropped EXE
      Checks computer location settings
      Suspicious use of WriteProcessMemory
      PID:3672
    - - C:\Users\Admin\AppData\Local\Temp\1000060001\random.exe
        
        "C:\Users\Admin\AppData\Local\Temp\1000060001\random.exe" -h
        5⤵
        Executes dropped EXE
        
        PID:2360
  - - C:\Windows\SysWOW64\rundll32.exe
      "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\07c6bc37dc5087\cred64.dll, Main
      4⤵
      Loads dropped DLL
      PID:1504
    - - C:\Windows\system32\rundll32.exe
        
        "C:\Windows\System32\rundll32.exe" C:\Users\Admin\AppData\Roaming\07c6bc37dc5087\cred64.dll, Main
        5⤵
        Loads dropped DLL
        
        PID:4428
      - C:\Windows\system32\WerFault.exe
        
        C:\Windows\system32\WerFault.exe -u -p 4428 -s 680
        6⤵
        Program crash
        
        PID:4920
- C:\Users\Admin\AppData\Local\Temp\birge.exe
  "C:\Users\Admin\AppData\Local\Temp\birge.exe"
  2⤵
  - Identifies VirtualBox via ACPI registry values (likely anti-VM)
  - Executes dropped EXE
  - Checks BIOS information in registry
  - Checks computer location settings
  - Loads dropped DLL
  - Checks whether UAC is enabled
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2324
- - C:\Users\Admin\AppData\Roaming\CG9W5XQk.exe
    "C:\Users\Admin\AppData\Roaming\CG9W5XQk.exe"
    3⤵
    - Identifies VirtualBox via ACPI registry values (likely anti-VM)
    - Executes dropped EXE
    - Checks BIOS information in registry
    - Checks computer location settings
    - Checks whether UAC is enabled
    - Suspicious use of WriteProcessMemory
    PID:2212
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /CREATE /TN "5.7.2.Microsoft.NET\AgentActivationRuntime5.7.2.\IntelPalnt5.7.2." /TR "C:\ProgramData\Mslprojector\WlndowsDraiver-Ver5.7.2.0.exe" /SC MINUTE
      4⤵
      Creates scheduled task(s)
      PID:736
  - - C:\Windows\System32\icacls.exe
      "C:\Windows\System32\icacls.exe" "C:\ProgramData\Mslprojector" /inheritance:e /deny "*S-1-1-0:(R,REA,RA,RD)"
      4⤵
      Modifies file permissions
      PID:4384
  - - C:\Windows\System32\icacls.exe
      "C:\Windows\System32\icacls.exe" "C:\ProgramData\Mslprojector" /inheritance:e /deny "*S-1-5-7:(R,REA,RA,RD)"
      4⤵
      Modifies file permissions
      PID:2136
  - - C:\Windows\System32\icacls.exe
      "C:\Windows\System32\icacls.exe" "C:\ProgramData\Mslprojector" /inheritance:e /deny "admin:(R,REA,RA,RD)"
      4⤵
      Modifies file permissions
      PID:3528
- - C:\Users\Admin\AppData\Roaming\9o37RBZj.exe
    "C:\Users\Admin\AppData\Roaming\9o37RBZj.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of WriteProcessMemory
    PID:2744
  - - C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /C choice /C Y /N /D Y /T 0 &Del C:\Users\Admin\AppData\Roaming\9o37RBZj.exe
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4304
    - - C:\Windows\system32\choice.exe
        
        choice /C Y /N /D Y /T 0
        5⤵
        
        PID:864
- C:\Users\Admin\AppData\Local\Temp\ly.exe
  "C:\Users\Admin\AppData\Local\Temp\ly.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1348
- - C:\Users\Admin\AppData\Local\Temp\ly.exe
    "C:\Users\Admin\AppData\Local\Temp\ly.exe" -h
    3⤵
    - Executes dropped EXE
    PID:1532

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:3112
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
  2⤵
  - Loads dropped DLL
  PID:4888
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4888 -s 608
    3⤵
    - Program crash
    PID:4120

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4888 -ip 4888
1⤵
PID:1944

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Local\Temp\db.dll",open
  2⤵
  - Loads dropped DLL
  PID:4580
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4580 -s 608
    3⤵
    - Program crash
    PID:4260

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 4580 -ip 4580
1⤵
PID:4844

C:\Users\Admin\AppData\Local\Temp\16de06bfb4\nbveek.exe
C:\Users\Admin\AppData\Local\Temp\16de06bfb4\nbveek.exe
1⤵
- Executes dropped EXE
PID:752

C:\Windows\system32\WerFault.exe
C:\Windows\system32\WerFault.exe -pss -s 548 -p 4428 -ip 4428
1⤵
PID:1348

C:\Users\Admin\AppData\Local\Temp\16de06bfb4\nbveek.exe
C:\Users\Admin\AppData\Local\Temp\16de06bfb4\nbveek.exe
1⤵
- Executes dropped EXE
PID:4252

C:\ProgramData\Mslprojector\WlndowsDraiver-Ver5.7.2.0.exe
C:\ProgramData\Mslprojector\WlndowsDraiver-Ver5.7.2.0.exe
1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Executes dropped EXE
- Checks BIOS information in registry
- Checks whether UAC is enabled
PID:4232

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

Persistence

Scheduled Task

Privilege Escalation

Scheduled Task

Defense Evasion

File and Directory Permissions Modification

T1222

Virtualization/Sandbox Evasion

T1497

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

System Information Discovery