76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd

Analysis

max time kernel
150s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
21/10/2022, 04:09

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General

Target

76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe
Size

267KB
MD5

4a403aedeb9ca02f9f7aba6923161e60
SHA1

cf2a4032ed5e7c141467b8b6c8b915de75309633
SHA256

76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd
SHA512

3706b48ed7bd58402ded18e55b64a81404831e538e55b943cc31b30d5a50e57ba9e4f09af571668bf88efada49b3e07f79a6376adfb4dc43a8035f66e1cbdce2
SSDEEP

6144:XbfO3SlNyTkyhlx0kRujRYO4VYAtHJ3DFLjxIE++/gAxcbibMoS2:LfIST8kk0kMlCPTvXxKXoS2

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 10 IoCs

evasion

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\darkeye-nosttingspersistent2.exe = "C:\\Users\\Admin\\AppData\\Roaming\\darkeye-nosttingspersistent2.exe:*:Enabled:Windows Messanger"	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	reg.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DoNotAllowExceptions = "0"	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\winlogon.exe = "C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe:*:Enabled:Windows Messanger"	reg.exe

Executes dropped EXE 3 IoCs

pid	Process
1924	winlogon.exe
3572	winlogon.exe
2884	winlogon.exe

UPX packed file 18 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
	upx
behavioral2/memory/5020-134-0x0000000000400000-0x000000000057E000-memory.dmp	upx
behavioral2/files/0x0003000000022e30-139.dat	upx
behavioral2/files/0x0003000000022e30-140.dat	upx
behavioral2/memory/5020-141-0x0000000000400000-0x000000000057E000-memory.dmp	upx
behavioral2/memory/3572-145-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/files/0x0003000000022e30-146.dat	upx
behavioral2/memory/3572-148-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/memory/3572-149-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/memory/1924-153-0x0000000000400000-0x000000000057E000-memory.dmp	upx
behavioral2/memory/2884-154-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/3572-155-0x0000000000400000-0x000000000045D000-memory.dmp	upx
behavioral2/files/0x0003000000022e30-157.dat	upx
behavioral2/memory/1924-163-0x0000000000400000-0x000000000057E000-memory.dmp	upx
behavioral2/memory/2884-161-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2884-159-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/2884-172-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral2/memory/3572-173-0x0000000000400000-0x000000000045D000-memory.dmp	upx

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	reg.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Winlogon = "C:\\Users\\Admin\\AppData\\Roaming\\winlogon.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 1924 set thread context of 3572	1924	winlogon.exe	88
PID 1924 set thread context of 2884	1924	winlogon.exe	89

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 4 IoCs

Modify Registry

T1112

pid	Process
4560	reg.exe
2420	reg.exe
4816	reg.exe
692	reg.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: 1	3572	winlogon.exe
Token: SeCreateTokenPrivilege	3572	winlogon.exe
Token: SeAssignPrimaryTokenPrivilege	3572	winlogon.exe
Token: SeLockMemoryPrivilege	3572	winlogon.exe
Token: SeIncreaseQuotaPrivilege	3572	winlogon.exe
Token: SeMachineAccountPrivilege	3572	winlogon.exe
Token: SeTcbPrivilege	3572	winlogon.exe
Token: SeSecurityPrivilege	3572	winlogon.exe
Token: SeTakeOwnershipPrivilege	3572	winlogon.exe
Token: SeLoadDriverPrivilege	3572	winlogon.exe
Token: SeSystemProfilePrivilege	3572	winlogon.exe
Token: SeSystemtimePrivilege	3572	winlogon.exe
Token: SeProfSingleProcessPrivilege	3572	winlogon.exe
Token: SeIncBasePriorityPrivilege	3572	winlogon.exe
Token: SeCreatePagefilePrivilege	3572	winlogon.exe
Token: SeCreatePermanentPrivilege	3572	winlogon.exe
Token: SeBackupPrivilege	3572	winlogon.exe
Token: SeRestorePrivilege	3572	winlogon.exe
Token: SeShutdownPrivilege	3572	winlogon.exe
Token: SeDebugPrivilege	3572	winlogon.exe
Token: SeAuditPrivilege	3572	winlogon.exe
Token: SeSystemEnvironmentPrivilege	3572	winlogon.exe
Token: SeChangeNotifyPrivilege	3572	winlogon.exe
Token: SeRemoteShutdownPrivilege	3572	winlogon.exe
Token: SeUndockPrivilege	3572	winlogon.exe
Token: SeSyncAgentPrivilege	3572	winlogon.exe
Token: SeEnableDelegationPrivilege	3572	winlogon.exe
Token: SeManageVolumePrivilege	3572	winlogon.exe
Token: SeImpersonatePrivilege	3572	winlogon.exe
Token: SeCreateGlobalPrivilege	3572	winlogon.exe
Token: 31	3572	winlogon.exe
Token: 32	3572	winlogon.exe
Token: 33	3572	winlogon.exe
Token: 34	3572	winlogon.exe
Token: 35	3572	winlogon.exe
Token: SeDebugPrivilege	2884	winlogon.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
5020	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe
1924	winlogon.exe
3572	winlogon.exe
3572	winlogon.exe
2884	winlogon.exe
3572	winlogon.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 5020 wrote to memory of 4940	5020	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe	83
PID 5020 wrote to memory of 4940	5020	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe	83
PID 5020 wrote to memory of 4940	5020	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe	83
PID 4940 wrote to memory of 2240	4940	cmd.exe	86
PID 4940 wrote to memory of 2240	4940	cmd.exe	86
PID 4940 wrote to memory of 2240	4940	cmd.exe	86
PID 5020 wrote to memory of 1924	5020	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe	87
PID 5020 wrote to memory of 1924	5020	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe	87
PID 5020 wrote to memory of 1924	5020	76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe	87
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 3572	1924	winlogon.exe	88
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 1924 wrote to memory of 2884	1924	winlogon.exe	89
PID 3572 wrote to memory of 4636	3572	winlogon.exe	90
PID 3572 wrote to memory of 4636	3572	winlogon.exe	90
PID 3572 wrote to memory of 4636	3572	winlogon.exe	90
PID 3572 wrote to memory of 5096	3572	winlogon.exe	91
PID 3572 wrote to memory of 5096	3572	winlogon.exe	91
PID 3572 wrote to memory of 5096	3572	winlogon.exe	91
PID 3572 wrote to memory of 4512	3572	winlogon.exe	92
PID 3572 wrote to memory of 4512	3572	winlogon.exe	92
PID 3572 wrote to memory of 4512	3572	winlogon.exe	92
PID 3572 wrote to memory of 3088	3572	winlogon.exe	96
PID 3572 wrote to memory of 3088	3572	winlogon.exe	96
PID 3572 wrote to memory of 3088	3572	winlogon.exe	96
PID 4636 wrote to memory of 4560	4636	cmd.exe	98
PID 4636 wrote to memory of 4560	4636	cmd.exe	98
PID 4636 wrote to memory of 4560	4636	cmd.exe	98
PID 4512 wrote to memory of 4816	4512	cmd.exe	100
PID 4512 wrote to memory of 4816	4512	cmd.exe	100
PID 4512 wrote to memory of 4816	4512	cmd.exe	100
PID 3088 wrote to memory of 2420	3088	cmd.exe	99
PID 3088 wrote to memory of 2420	3088	cmd.exe	99
PID 3088 wrote to memory of 2420	3088	cmd.exe	99
PID 5096 wrote to memory of 692	5096	cmd.exe	101
PID 5096 wrote to memory of 692	5096	cmd.exe	101
PID 5096 wrote to memory of 692	5096	cmd.exe	101

C:\Users\Admin\AppData\Local\Temp\76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe
"C:\Users\Admin\AppData\Local\Temp\76b17a0ee47091052bbe9ba3a0ec780c54c927b7f7c6dc5995d3631e7b973afd.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5020
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\MHVQy.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4940
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Winlogon" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\winlogon.exe" /f
    3⤵
    - Adds Run key to start application
    PID:2240
- C:\Users\Admin\AppData\Roaming\winlogon.exe
  "C:\Users\Admin\AppData\Roaming\winlogon.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1924
- - C:\Users\Admin\AppData\Roaming\winlogon.exe
    winlogon.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3572
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4636
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
        5⤵
        Modifies firewall policy service
        Modifies registry key
        
        PID:4560
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\winlogon.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\winlogon.exe:*:Enabled:Windows Messanger" /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:5096
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\winlogon.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\winlogon.exe:*:Enabled:Windows Messanger" /f
        5⤵
        Modifies firewall policy service
        Modifies registry key
        
        PID:692
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:4512
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
        5⤵
        Modifies firewall policy service
        Modifies registry key
        
        PID:4816
  - - C:\Windows\SysWOW64\cmd.exe
      cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\darkeye-nosttingspersistent2.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\darkeye-nosttingspersistent2.exe:*:Enabled:Windows Messanger" /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3088
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\darkeye-nosttingspersistent2.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\darkeye-nosttingspersistent2.exe:*:Enabled:Windows Messanger" /f
        5⤵
        Modifies firewall policy service
        Modifies registry key
        
        PID:2420
- - C:\Users\Admin\AppData\Roaming\winlogon.exe
    C:\Users\Admin\AppData\Roaming\winlogon.exe
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2884

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\MHVQy.bat

Filesize
138B

MD5
4da6717f2c70f4bd32ad33a227a2ff47

SHA1
3d7f7159e1f695bd469287d1ad4ffa0841b407a8

SHA256
a12bb2e5d2fb0b3c400ce311fae72995a00b57a97d23e4b9effec47cff189d07

SHA512
6765314054ad9bf2164058248f3d3a17775176925abbe4376aec030dca3a5e59be8b9e96139941fec2b2e1a9bff38f87abdb29ea09a299d8ab7e23ecec4083df

Download Submit
C:\Users\Admin\AppData\Roaming\winlogon.exe

Filesize
267KB

MD5
109020c53570bf56b0c032b9daf26ff9

SHA1
0cd525d4f4b6c8686871a300cc90ff7086d9d5f2

SHA256
5e5f82e0ecd437008cf56f002a008786066b15996e4646efc916488d7ca766c1

SHA512
5c4f4038fb4d34fbd7a73e0253d395abcab7bd0f53701ba5b7363b6f1e354e9b14d42e0ed606fd23330928f9ee0905b42b04c31208d6172340f02da38b119b21

Download Submit
C:\Users\Admin\AppData\Roaming\winlogon.exe

Filesize
267KB

MD5
109020c53570bf56b0c032b9daf26ff9

SHA1
0cd525d4f4b6c8686871a300cc90ff7086d9d5f2

SHA256
5e5f82e0ecd437008cf56f002a008786066b15996e4646efc916488d7ca766c1

SHA512
5c4f4038fb4d34fbd7a73e0253d395abcab7bd0f53701ba5b7363b6f1e354e9b14d42e0ed606fd23330928f9ee0905b42b04c31208d6172340f02da38b119b21

Download Submit
C:\Users\Admin\AppData\Roaming\winlogon.exe

Filesize
267KB

MD5
109020c53570bf56b0c032b9daf26ff9

SHA1
0cd525d4f4b6c8686871a300cc90ff7086d9d5f2

SHA256
5e5f82e0ecd437008cf56f002a008786066b15996e4646efc916488d7ca766c1

SHA512
5c4f4038fb4d34fbd7a73e0253d395abcab7bd0f53701ba5b7363b6f1e354e9b14d42e0ed606fd23330928f9ee0905b42b04c31208d6172340f02da38b119b21

Download Submit
C:\Users\Admin\AppData\Roaming\winlogon.exe

Filesize
267KB

MD5
109020c53570bf56b0c032b9daf26ff9

SHA1
0cd525d4f4b6c8686871a300cc90ff7086d9d5f2

SHA256
5e5f82e0ecd437008cf56f002a008786066b15996e4646efc916488d7ca766c1

SHA512
5c4f4038fb4d34fbd7a73e0253d395abcab7bd0f53701ba5b7363b6f1e354e9b14d42e0ed606fd23330928f9ee0905b42b04c31208d6172340f02da38b119b21

Download Submit
memory/1924-153-0x0000000000400000-0x000000000057E000-memory.dmp

Filesize
1.5MB

Download
memory/1924-163-0x0000000000400000-0x000000000057E000-memory.dmp

Filesize
1.5MB

Download
memory/2884-154-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2884-172-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2884-159-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2884-161-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/3572-145-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3572-149-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3572-155-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3572-173-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/3572-148-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/5020-141-0x0000000000400000-0x000000000057E000-memory.dmp

Filesize
1.5MB

Download
memory/5020-134-0x0000000000400000-0x000000000057E000-memory.dmp

Filesize
1.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads