ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8

Analysis

max time kernel
148s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
02/12/2022, 21:07

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General

Target

ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe
Size

327KB
MD5

e838a1cd4129c077f601d806a268989b
SHA1

2f986cca1fe6bf189291717e58b287f046447e43
SHA256

ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8
SHA512

b5dc7d5849a07288e884e903e8591796c3cc7e7f73e172b0e3ae5d3e843d92f9c0c62fea69cda86d46d1082f2cea2944647515d3c9459ba0e684abefae5c781c
SSDEEP

6144:C3oPD7QO5H9Rea0tdqxgInOy8Hdu/hZJCLk7xWDNmrptKkJ:CQ7/dRhudupRgOhwixWhmrj

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies firewall policy service 2 TTPs 8 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	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\Local\Temp\temp_mwdHGYHrEN\vbc.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\temp_mwdHGYHrEN\\vbc.exe:*:Enabled:Windows Messanger"	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\XC3FIO8WK8.exe = "C:\\Users\\Admin\\AppData\\Roaming\\XC3FIO8WK8.exe:*:Enabled:Windows Messanger"	reg.exe

Executes dropped EXE 3 IoCs

pid	Process
1552	tmpF3E.tmp.exe
860	tmpF3E.tmp.exe
320	vbc.exe

Loads dropped DLL 3 IoCs

pid	Process
1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe
1552	tmpF3E.tmp.exe
1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Software\Microsoft\Windows\CurrentVersion\Run\wuauclt.exe = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tmpF3E.tmp.exe\""	tmpF3E.tmp.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1388 set thread context of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29

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
1744	reg.exe
692	reg.exe
2008	reg.exe
1620	reg.exe

Suspicious use of AdjustPrivilegeToken 39 IoCs

description	pid	Process
Token: SeDebugPrivilege	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe
Token: SeDebugPrivilege	1552	tmpF3E.tmp.exe
Token: SeDebugPrivilege	860	tmpF3E.tmp.exe
Token: 1	320	vbc.exe
Token: SeCreateTokenPrivilege	320	vbc.exe
Token: SeAssignPrimaryTokenPrivilege	320	vbc.exe
Token: SeLockMemoryPrivilege	320	vbc.exe
Token: SeIncreaseQuotaPrivilege	320	vbc.exe
Token: SeMachineAccountPrivilege	320	vbc.exe
Token: SeTcbPrivilege	320	vbc.exe
Token: SeSecurityPrivilege	320	vbc.exe
Token: SeTakeOwnershipPrivilege	320	vbc.exe
Token: SeLoadDriverPrivilege	320	vbc.exe
Token: SeSystemProfilePrivilege	320	vbc.exe
Token: SeSystemtimePrivilege	320	vbc.exe
Token: SeProfSingleProcessPrivilege	320	vbc.exe
Token: SeIncBasePriorityPrivilege	320	vbc.exe
Token: SeCreatePagefilePrivilege	320	vbc.exe
Token: SeCreatePermanentPrivilege	320	vbc.exe
Token: SeBackupPrivilege	320	vbc.exe
Token: SeRestorePrivilege	320	vbc.exe
Token: SeShutdownPrivilege	320	vbc.exe
Token: SeDebugPrivilege	320	vbc.exe
Token: SeAuditPrivilege	320	vbc.exe
Token: SeSystemEnvironmentPrivilege	320	vbc.exe
Token: SeChangeNotifyPrivilege	320	vbc.exe
Token: SeRemoteShutdownPrivilege	320	vbc.exe
Token: SeUndockPrivilege	320	vbc.exe
Token: SeSyncAgentPrivilege	320	vbc.exe
Token: SeEnableDelegationPrivilege	320	vbc.exe
Token: SeManageVolumePrivilege	320	vbc.exe
Token: SeImpersonatePrivilege	320	vbc.exe
Token: SeCreateGlobalPrivilege	320	vbc.exe
Token: 31	320	vbc.exe
Token: 32	320	vbc.exe
Token: 33	320	vbc.exe
Token: 34	320	vbc.exe
Token: 35	320	vbc.exe
Token: SeDebugPrivilege	320	vbc.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
320	vbc.exe
320	vbc.exe
320	vbc.exe
320	vbc.exe

Suspicious use of WriteProcessMemory 48 IoCs

description	pid	Process	procid_target
PID 1388 wrote to memory of 1552	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	27
PID 1388 wrote to memory of 1552	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	27
PID 1388 wrote to memory of 1552	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	27
PID 1388 wrote to memory of 1552	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	27
PID 1552 wrote to memory of 860	1552	tmpF3E.tmp.exe	28
PID 1552 wrote to memory of 860	1552	tmpF3E.tmp.exe	28
PID 1552 wrote to memory of 860	1552	tmpF3E.tmp.exe	28
PID 1552 wrote to memory of 860	1552	tmpF3E.tmp.exe	28
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 1388 wrote to memory of 320	1388	ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe	29
PID 320 wrote to memory of 280	320	vbc.exe	30
PID 320 wrote to memory of 280	320	vbc.exe	30
PID 320 wrote to memory of 280	320	vbc.exe	30
PID 320 wrote to memory of 280	320	vbc.exe	30
PID 320 wrote to memory of 1716	320	vbc.exe	32
PID 320 wrote to memory of 1716	320	vbc.exe	32
PID 320 wrote to memory of 1716	320	vbc.exe	32
PID 320 wrote to memory of 1716	320	vbc.exe	32
PID 320 wrote to memory of 1332	320	vbc.exe	34
PID 320 wrote to memory of 1332	320	vbc.exe	34
PID 320 wrote to memory of 1332	320	vbc.exe	34
PID 320 wrote to memory of 1332	320	vbc.exe	34
PID 320 wrote to memory of 1548	320	vbc.exe	36
PID 320 wrote to memory of 1548	320	vbc.exe	36
PID 320 wrote to memory of 1548	320	vbc.exe	36
PID 320 wrote to memory of 1548	320	vbc.exe	36
PID 1716 wrote to memory of 1744	1716	cmd.exe	38
PID 1716 wrote to memory of 1744	1716	cmd.exe	38
PID 1716 wrote to memory of 1744	1716	cmd.exe	38
PID 1716 wrote to memory of 1744	1716	cmd.exe	38
PID 280 wrote to memory of 2008	280	cmd.exe	40
PID 280 wrote to memory of 2008	280	cmd.exe	40
PID 280 wrote to memory of 2008	280	cmd.exe	40
PID 280 wrote to memory of 2008	280	cmd.exe	40
PID 1332 wrote to memory of 692	1332	cmd.exe	39
PID 1332 wrote to memory of 692	1332	cmd.exe	39
PID 1332 wrote to memory of 692	1332	cmd.exe	39
PID 1332 wrote to memory of 692	1332	cmd.exe	39
PID 1548 wrote to memory of 1620	1548	cmd.exe	41
PID 1548 wrote to memory of 1620	1548	cmd.exe	41
PID 1548 wrote to memory of 1620	1548	cmd.exe	41
PID 1548 wrote to memory of 1620	1548	cmd.exe	41

C:\Users\Admin\AppData\Local\Temp\ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe
"C:\Users\Admin\AppData\Local\Temp\ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1388
- C:\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe" /pq
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1552
- - C:\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe" /px
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:860
- C:\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe
  "C:\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:320
- - 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
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:280
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
      4⤵
      Modifies firewall policy service
      Modifies registry key
      PID:2008
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe:*:Enabled:Windows Messanger" /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1716
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe:*:Enabled:Windows Messanger" /f
      4⤵
      Modifies firewall policy service
      Modifies registry key
      PID:1744
- - 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
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1332
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
      4⤵
      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\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\XC3FIO8WK8.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\XC3FIO8WK8.exe:*:Enabled:Windows Messanger" /f
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1548
  - - C:\Windows\SysWOW64\reg.exe
      REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "C:\Users\Admin\AppData\Roaming\XC3FIO8WK8.exe" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\XC3FIO8WK8.exe:*:Enabled:Windows Messanger" /f
      4⤵
      Modifies firewall policy service
      Modifies registry key
      PID:1620

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scripting

T1064

Persistence

Modify Existing Service

T1031

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

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\temp_mwdHGYHrEN\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe

Filesize
327KB

MD5
e838a1cd4129c077f601d806a268989b

SHA1
2f986cca1fe6bf189291717e58b287f046447e43

SHA256
ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8

SHA512
b5dc7d5849a07288e884e903e8591796c3cc7e7f73e172b0e3ae5d3e843d92f9c0c62fea69cda86d46d1082f2cea2944647515d3c9459ba0e684abefae5c781c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe

Filesize
327KB

MD5
e838a1cd4129c077f601d806a268989b

SHA1
2f986cca1fe6bf189291717e58b287f046447e43

SHA256
ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8

SHA512
b5dc7d5849a07288e884e903e8591796c3cc7e7f73e172b0e3ae5d3e843d92f9c0c62fea69cda86d46d1082f2cea2944647515d3c9459ba0e684abefae5c781c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe

Filesize
327KB

MD5
e838a1cd4129c077f601d806a268989b

SHA1
2f986cca1fe6bf189291717e58b287f046447e43

SHA256
ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8

SHA512
b5dc7d5849a07288e884e903e8591796c3cc7e7f73e172b0e3ae5d3e843d92f9c0c62fea69cda86d46d1082f2cea2944647515d3c9459ba0e684abefae5c781c

Download Submit
\Users\Admin\AppData\Local\Temp\temp_mwdHGYHrEN\vbc.exe

Filesize
1.1MB

MD5
34aa912defa18c2c129f1e09d75c1d7e

SHA1
9c3046324657505a30ecd9b1fdb46c05bde7d470

SHA256
6df94b7fa33f1b87142adc39b3db0613fc520d9e7a5fd6a5301dd7f51f8d0386

SHA512
d1ea9368f5d7166180612fd763c87afb647d088498887961f5e7fb0a10f4a808bd5928e8a3666d70ff794093c51ecca8816f75dd47652fd4eb23dce7f9aa1f98

Download Submit
\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe

Filesize
327KB

MD5
e838a1cd4129c077f601d806a268989b

SHA1
2f986cca1fe6bf189291717e58b287f046447e43

SHA256
ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8

SHA512
b5dc7d5849a07288e884e903e8591796c3cc7e7f73e172b0e3ae5d3e843d92f9c0c62fea69cda86d46d1082f2cea2944647515d3c9459ba0e684abefae5c781c

Download Submit
\Users\Admin\AppData\Local\Temp\tmpF3E.tmp.exe

Filesize
327KB

MD5
e838a1cd4129c077f601d806a268989b

SHA1
2f986cca1fe6bf189291717e58b287f046447e43

SHA256
ffea8e77c2fd8eac3dd3fa9e0bf1429a00a2f60ad1133ba12eb0e2cf118e0ae8

SHA512
b5dc7d5849a07288e884e903e8591796c3cc7e7f73e172b0e3ae5d3e843d92f9c0c62fea69cda86d46d1082f2cea2944647515d3c9459ba0e684abefae5c781c

Download Submit
memory/320-90-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/320-91-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/320-68-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/320-69-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/320-71-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/320-72-0x0000000000400000-0x0000000000478000-memory.dmp

Filesize
480KB

Download
memory/860-66-0x0000000074940000-0x0000000074EEB000-memory.dmp

Filesize
5.7MB

Download
memory/1388-76-0x0000000074940000-0x0000000074EEB000-memory.dmp

Filesize
5.7MB

Download
memory/1388-54-0x0000000075E11000-0x0000000075E13000-memory.dmp

Filesize
8KB

Download
memory/1388-55-0x0000000074940000-0x0000000074EEB000-memory.dmp

Filesize
5.7MB

Download
memory/1552-65-0x0000000074940000-0x0000000074EEB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads