30d17c665801b2bc713301552d45bad970be0e0ca90f09769a6ad385128ff12d

Analysis

max time kernel
149s
max time network
123s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
10/03/2024, 23:47

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General

Target

bf46c0f10ddd3a16518cdd366c48830b.exe
Size

344KB
MD5

bf46c0f10ddd3a16518cdd366c48830b
SHA1

1e5a63266a0fcfdcad8517e439f109977fbba0bc
SHA256

30d17c665801b2bc713301552d45bad970be0e0ca90f09769a6ad385128ff12d
SHA512

f35487040480142cbdb6be99b099471655d5f629c908607aaa988aecb99803b4a4119f5c4ab1c9754379cd372e355a91e202022590e9b677ceec3b9f7341e6a7
SSDEEP

6144:9Hxi2fmOCRXHK4Ms/sjZfHyVZbGMGRC6xs/uZJkBYkRdTZCYGkoS:bJskj5SVoLRCBuEWkRdTEYGkoS

Score

10^/10

evasion persistence upx

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 8 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

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\List	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\SmallerDARK.exe = "C:\\Users\\Admin\\AppData\\Roaming\\SmallerDARK.exe:*:Enabled:Windows Messanger"	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
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List	reg.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\Admin\AppData\Roaming\%NON%\small.exe = "C:\\Users\\Admin\\AppData\\Roaming\\%NON%\\small.exe:*:Enabled:Windows Messanger"	reg.exe

Executes dropped EXE 3 IoCs

pid	Process
2736	small.exe
2644	small.exe
2420	small.exe

Loads dropped DLL 7 IoCs

pid	Process
2460	bf46c0f10ddd3a16518cdd366c48830b.exe
2460	bf46c0f10ddd3a16518cdd366c48830b.exe
2460	bf46c0f10ddd3a16518cdd366c48830b.exe
2460	bf46c0f10ddd3a16518cdd366c48830b.exe
2460	bf46c0f10ddd3a16518cdd366c48830b.exe
2736	small.exe
2736	small.exe

UPX packed file 22 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2460-0-0x0000000000400000-0x0000000000777000-memory.dmp	upx
behavioral1/files/0x000c00000001315b-24.dat	upx
behavioral1/memory/2460-36-0x0000000000400000-0x0000000000777000-memory.dmp	upx
behavioral1/memory/2736-40-0x0000000000400000-0x0000000000777000-memory.dmp	upx
behavioral1/memory/2736-45-0x0000000002B60000-0x0000000002ED7000-memory.dmp	upx
behavioral1/memory/2644-51-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2420-50-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2644-49-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2420-55-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2644-44-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2420-58-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2736-61-0x0000000000400000-0x0000000000777000-memory.dmp	upx
behavioral1/memory/2644-66-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2420-67-0x0000000000400000-0x0000000000409000-memory.dmp	upx
behavioral1/memory/2644-68-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2644-69-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2644-74-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2644-76-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2644-79-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2644-88-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2644-90-0x0000000000400000-0x0000000000473000-memory.dmp	upx
behavioral1/memory/2644-93-0x0000000000400000-0x0000000000473000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\Software\Microsoft\Windows\CurrentVersion\Run\mrecss = "C:\\Users\\Admin\\AppData\\Roaming\\\\small.exe"	reg.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 2644	2736	small.exe	32
PID 2736 set thread context of 2420	2736	small.exe	33

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

System Information Discovery
T1082

Modifies registry key 1 TTPs 4 IoCs

Modify Registry

T1112

pid	Process
2624	reg.exe
2448	reg.exe
1256	reg.exe
2668	reg.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	2420	small.exe
Token: 1	2644	small.exe
Token: SeCreateTokenPrivilege	2644	small.exe
Token: SeAssignPrimaryTokenPrivilege	2644	small.exe
Token: SeLockMemoryPrivilege	2644	small.exe
Token: SeIncreaseQuotaPrivilege	2644	small.exe
Token: SeMachineAccountPrivilege	2644	small.exe
Token: SeTcbPrivilege	2644	small.exe
Token: SeSecurityPrivilege	2644	small.exe
Token: SeTakeOwnershipPrivilege	2644	small.exe
Token: SeLoadDriverPrivilege	2644	small.exe
Token: SeSystemProfilePrivilege	2644	small.exe
Token: SeSystemtimePrivilege	2644	small.exe
Token: SeProfSingleProcessPrivilege	2644	small.exe
Token: SeIncBasePriorityPrivilege	2644	small.exe
Token: SeCreatePagefilePrivilege	2644	small.exe
Token: SeCreatePermanentPrivilege	2644	small.exe
Token: SeBackupPrivilege	2644	small.exe
Token: SeRestorePrivilege	2644	small.exe
Token: SeShutdownPrivilege	2644	small.exe
Token: SeDebugPrivilege	2644	small.exe
Token: SeAuditPrivilege	2644	small.exe
Token: SeSystemEnvironmentPrivilege	2644	small.exe
Token: SeChangeNotifyPrivilege	2644	small.exe
Token: SeRemoteShutdownPrivilege	2644	small.exe
Token: SeUndockPrivilege	2644	small.exe
Token: SeSyncAgentPrivilege	2644	small.exe
Token: SeEnableDelegationPrivilege	2644	small.exe
Token: SeManageVolumePrivilege	2644	small.exe
Token: SeImpersonatePrivilege	2644	small.exe
Token: SeCreateGlobalPrivilege	2644	small.exe
Token: 31	2644	small.exe
Token: 32	2644	small.exe
Token: 33	2644	small.exe
Token: 34	2644	small.exe
Token: 35	2644	small.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
2460	bf46c0f10ddd3a16518cdd366c48830b.exe
2736	small.exe
2644	small.exe
2420	small.exe
2644	small.exe
2644	small.exe

Suspicious use of WriteProcessMemory 62 IoCs

description	pid	Process	procid_target
PID 2460 wrote to memory of 2520	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	28
PID 2460 wrote to memory of 2520	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	28
PID 2460 wrote to memory of 2520	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	28
PID 2460 wrote to memory of 2520	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	28
PID 2520 wrote to memory of 2572	2520	cmd.exe	30
PID 2520 wrote to memory of 2572	2520	cmd.exe	30
PID 2520 wrote to memory of 2572	2520	cmd.exe	30
PID 2520 wrote to memory of 2572	2520	cmd.exe	30
PID 2460 wrote to memory of 2736	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	31
PID 2460 wrote to memory of 2736	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	31
PID 2460 wrote to memory of 2736	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	31
PID 2460 wrote to memory of 2736	2460	bf46c0f10ddd3a16518cdd366c48830b.exe	31
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2644	2736	small.exe	32
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2736 wrote to memory of 2420	2736	small.exe	33
PID 2644 wrote to memory of 2428	2644	small.exe	34
PID 2644 wrote to memory of 2428	2644	small.exe	34
PID 2644 wrote to memory of 2428	2644	small.exe	34
PID 2644 wrote to memory of 2428	2644	small.exe	34
PID 2644 wrote to memory of 2816	2644	small.exe	35
PID 2644 wrote to memory of 2816	2644	small.exe	35
PID 2644 wrote to memory of 2816	2644	small.exe	35
PID 2644 wrote to memory of 2816	2644	small.exe	35
PID 2644 wrote to memory of 3048	2644	small.exe	36
PID 2644 wrote to memory of 3048	2644	small.exe	36
PID 2644 wrote to memory of 3048	2644	small.exe	36
PID 2644 wrote to memory of 3048	2644	small.exe	36
PID 2644 wrote to memory of 2824	2644	small.exe	37
PID 2644 wrote to memory of 2824	2644	small.exe	37
PID 2644 wrote to memory of 2824	2644	small.exe	37
PID 2644 wrote to memory of 2824	2644	small.exe	37
PID 2816 wrote to memory of 1256	2816	cmd.exe	42
PID 2816 wrote to memory of 1256	2816	cmd.exe	42
PID 2816 wrote to memory of 1256	2816	cmd.exe	42
PID 2816 wrote to memory of 1256	2816	cmd.exe	42
PID 3048 wrote to memory of 2448	3048	cmd.exe	43
PID 3048 wrote to memory of 2448	3048	cmd.exe	43
PID 3048 wrote to memory of 2448	3048	cmd.exe	43
PID 3048 wrote to memory of 2448	3048	cmd.exe	43
PID 2428 wrote to memory of 2624	2428	cmd.exe	44
PID 2428 wrote to memory of 2624	2428	cmd.exe	44
PID 2428 wrote to memory of 2624	2428	cmd.exe	44
PID 2428 wrote to memory of 2624	2428	cmd.exe	44
PID 2824 wrote to memory of 2668	2824	cmd.exe	45
PID 2824 wrote to memory of 2668	2824	cmd.exe	45
PID 2824 wrote to memory of 2668	2824	cmd.exe	45
PID 2824 wrote to memory of 2668	2824	cmd.exe	45

C:\Users\Admin\AppData\Local\Temp\bf46c0f10ddd3a16518cdd366c48830b.exe
"C:\Users\Admin\AppData\Local\Temp\bf46c0f10ddd3a16518cdd366c48830b.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2460
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\GWsBQ.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2520
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "mrecss" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\\small.exe" /f
    3⤵
    - Adds Run key to start application
    PID:2572
- C:\Users\Admin\AppData\Roaming\%NON%\small.exe
  "C:\Users\Admin\AppData\Roaming\%NON%\small.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Users\Admin\AppData\Roaming\%NON%\small.exe
    False
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2644
  - - 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:2428
    - - 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:2624
  - - 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\%NON%\small.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\%NON%\small.exe:*:Enabled:Windows Messanger" /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2816
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\%NON%\small.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\%NON%\small.exe:*:Enabled:Windows Messanger" /f
        5⤵
        Modifies firewall policy service
        Modifies registry key
        
        PID:1256
  - - 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:3048
    - - 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:2448
  - - 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\SmallerDARK.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\SmallerDARK.exe:*:Enabled:Windows Messanger" /f
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2824
    - - C:\Windows\SysWOW64\reg.exe
        
        REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\SmallerDARK.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\SmallerDARK.exe:*:Enabled:Windows Messanger" /f
        5⤵
        Modifies firewall policy service
        Modifies registry key
        
        PID:2668
- - C:\Users\Admin\AppData\Roaming\%NON%\small.exe
    False
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:2420

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
137B

MD5
b60a6d7bd543c2827d9ed1979606fcd6

SHA1
de48b503245a05dff5f67e3035e2f512dea8aaf1

SHA256
82ab509a50b5e03deee267ec940ea65c3588d54baf2986d08a90cd1a5f98dd71

SHA512
c8d654632362862f1a8484c4e7fbc779c73f2f9cd554ee890326865c81eea89142df743a573c00ed08e8a37190871d1c1f33d31e8721f10a036246e2e0113cd0

Download Submit
C:\Users\Admin\AppData\Roaming\%NON%\small.exe

Filesize
344KB

MD5
bf46c0f10ddd3a16518cdd366c48830b

SHA1
1e5a63266a0fcfdcad8517e439f109977fbba0bc

SHA256
30d17c665801b2bc713301552d45bad970be0e0ca90f09769a6ad385128ff12d

SHA512
f35487040480142cbdb6be99b099471655d5f629c908607aaa988aecb99803b4a4119f5c4ab1c9754379cd372e355a91e202022590e9b677ceec3b9f7341e6a7

Download Submit
memory/2420-67-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2420-55-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2420-58-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2420-50-0x0000000000400000-0x0000000000409000-memory.dmp

Filesize
36KB

Download
memory/2460-36-0x0000000000400000-0x0000000000777000-memory.dmp

Filesize
3.5MB

Download
memory/2460-37-0x0000000003A00000-0x0000000003D77000-memory.dmp

Filesize
3.5MB

Download
memory/2460-39-0x0000000003A00000-0x0000000003D77000-memory.dmp

Filesize
3.5MB

Download
memory/2460-0-0x0000000000400000-0x0000000000777000-memory.dmp

Filesize
3.5MB

Download
memory/2460-35-0x0000000003A00000-0x0000000003D77000-memory.dmp

Filesize
3.5MB

Download
memory/2644-79-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-88-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-93-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-51-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-49-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-44-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-66-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-90-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-68-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-69-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-74-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2644-76-0x0000000000400000-0x0000000000473000-memory.dmp

Filesize
460KB

Download
memory/2736-61-0x0000000000400000-0x0000000000777000-memory.dmp

Filesize
3.5MB

Download
memory/2736-40-0x0000000000400000-0x0000000000777000-memory.dmp

Filesize
3.5MB

Download
memory/2736-45-0x0000000002B60000-0x0000000002ED7000-memory.dmp

Filesize
3.5MB

Download
memory/2736-52-0x0000000002B60000-0x0000000002ED7000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads