crypvault | 2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7

Analysis

max time kernel
115s
max time network
135s
platform
windows10_x64
resource
win10v20210408
submitted
26-04-2021 15:07

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General

Target

2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe
Size

464KB
MD5

fe7bc3cd6512f31d48a58caf3e558fee
SHA1

5b2e6e541ea6f47e369291396a5d91564ece2eb8
SHA256

2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7
SHA512

26e5d85f46afcf1434ccce85836014a5adf11728a609e79a8d19d2e6da6f84588eb4b650b5b5184b66bd255cb8d4b0a19bbfad65dc7f058928c7e5bc88f1730b

Score

10^/10

crypvault pony discovery evasion ransomware rat spyware stealer upx

Malware Config

Signatures

CrypVault
Ransomware family which makes encrypted files look like they have been quarantined by AV.
ransomware crypvault
Pony,Fareit
Pony is a Remote Access Trojan application that steals information.
rat spyware stealer pony

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

description	pid	pid_target	Process	procid_target
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	2132	1800	cmd.exe	87

Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
ransomware

File Deletion
T1107

Inhibit System Recovery
T1490

Modifies boot configuration data using bcdedit 1 TTPs 2 IoCs

ransomware evasion

Inhibit System Recovery

T1490

pid	Process
3292	bcdedit.exe
796	bcdedit.exe

Executes dropped EXE 3 IoCs

pid	Process
576	7za.exe
844	6D00D3EF97.exe
3428	6D00D3EF97.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3428-125-0x0000000000400000-0x0000000000E28000-memory.dmp	upx
behavioral2/memory/3428-129-0x0000000000400000-0x000000000041A000-memory.dmp	upx

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VAULT.hta	6D00D3EF97.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\VAULT.hta	6D00D3EF97.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
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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 844 set thread context of 3428	844	6D00D3EF97.exe	83

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

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

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Interacts with shadow copies 2 TTPs 1 IoCs

Shadow copies are often targeted by ransomware to inhibit system recovery.

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1544	vssadmin.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe
Key created	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000_Classes\Local Settings	6D00D3EF97.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
3168	WINWORD.EXE
3168	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
844	6D00D3EF97.exe
844	6D00D3EF97.exe
3428	6D00D3EF97.exe
3428	6D00D3EF97.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeImpersonatePrivilege	3428	6D00D3EF97.exe
Token: SeTcbPrivilege	3428	6D00D3EF97.exe
Token: SeChangeNotifyPrivilege	3428	6D00D3EF97.exe
Token: SeCreateTokenPrivilege	3428	6D00D3EF97.exe
Token: SeBackupPrivilege	3428	6D00D3EF97.exe
Token: SeRestorePrivilege	3428	6D00D3EF97.exe
Token: SeIncreaseQuotaPrivilege	3428	6D00D3EF97.exe
Token: SeAssignPrimaryTokenPrivilege	3428	6D00D3EF97.exe
Token: SeIncreaseQuotaPrivilege	1188	WMIC.exe
Token: SeSecurityPrivilege	1188	WMIC.exe
Token: SeTakeOwnershipPrivilege	1188	WMIC.exe
Token: SeLoadDriverPrivilege	1188	WMIC.exe
Token: SeSystemProfilePrivilege	1188	WMIC.exe
Token: SeSystemtimePrivilege	1188	WMIC.exe
Token: SeProfSingleProcessPrivilege	1188	WMIC.exe
Token: SeIncBasePriorityPrivilege	1188	WMIC.exe
Token: SeCreatePagefilePrivilege	1188	WMIC.exe
Token: SeBackupPrivilege	1188	WMIC.exe
Token: SeRestorePrivilege	1188	WMIC.exe
Token: SeShutdownPrivilege	1188	WMIC.exe
Token: SeDebugPrivilege	1188	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1188	WMIC.exe
Token: SeRemoteShutdownPrivilege	1188	WMIC.exe
Token: SeUndockPrivilege	1188	WMIC.exe
Token: SeManageVolumePrivilege	1188	WMIC.exe
Token: 33	1188	WMIC.exe
Token: 34	1188	WMIC.exe
Token: 35	1188	WMIC.exe
Token: 36	1188	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1188	WMIC.exe
Token: SeSecurityPrivilege	1188	WMIC.exe
Token: SeTakeOwnershipPrivilege	1188	WMIC.exe
Token: SeLoadDriverPrivilege	1188	WMIC.exe
Token: SeSystemProfilePrivilege	1188	WMIC.exe
Token: SeSystemtimePrivilege	1188	WMIC.exe
Token: SeProfSingleProcessPrivilege	1188	WMIC.exe
Token: SeIncBasePriorityPrivilege	1188	WMIC.exe
Token: SeCreatePagefilePrivilege	1188	WMIC.exe
Token: SeBackupPrivilege	1188	WMIC.exe
Token: SeRestorePrivilege	1188	WMIC.exe
Token: SeShutdownPrivilege	1188	WMIC.exe
Token: SeDebugPrivilege	1188	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1188	WMIC.exe
Token: SeRemoteShutdownPrivilege	1188	WMIC.exe
Token: SeUndockPrivilege	1188	WMIC.exe
Token: SeManageVolumePrivilege	1188	WMIC.exe
Token: 33	1188	WMIC.exe
Token: 34	1188	WMIC.exe
Token: 35	1188	WMIC.exe
Token: 36	1188	WMIC.exe
Token: SeBackupPrivilege	2136	vssvc.exe
Token: SeRestorePrivilege	2136	vssvc.exe
Token: SeAuditPrivilege	2136	vssvc.exe
Token: SeImpersonatePrivilege	3428	6D00D3EF97.exe
Token: SeTcbPrivilege	3428	6D00D3EF97.exe
Token: SeChangeNotifyPrivilege	3428	6D00D3EF97.exe
Token: SeCreateTokenPrivilege	3428	6D00D3EF97.exe
Token: SeBackupPrivilege	3428	6D00D3EF97.exe
Token: SeRestorePrivilege	3428	6D00D3EF97.exe
Token: SeIncreaseQuotaPrivilege	3428	6D00D3EF97.exe
Token: SeAssignPrimaryTokenPrivilege	3428	6D00D3EF97.exe
Token: SeImpersonatePrivilege	3428	6D00D3EF97.exe
Token: SeTcbPrivilege	3428	6D00D3EF97.exe
Token: SeChangeNotifyPrivilege	3428	6D00D3EF97.exe

Suspicious use of SetWindowsHookEx 6 IoCs

pid	Process
844	6D00D3EF97.exe
844	6D00D3EF97.exe
3168	WINWORD.EXE
3168	WINWORD.EXE
3168	WINWORD.EXE
3168	WINWORD.EXE

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1456 wrote to memory of 3220	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	75
PID 1456 wrote to memory of 3220	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	75
PID 1456 wrote to memory of 3220	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	75
PID 1456 wrote to memory of 1220	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	77
PID 1456 wrote to memory of 1220	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	77
PID 1456 wrote to memory of 1220	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	77
PID 1456 wrote to memory of 576	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	79
PID 1456 wrote to memory of 576	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	79
PID 1456 wrote to memory of 576	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	79
PID 1456 wrote to memory of 3168	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	81
PID 1456 wrote to memory of 3168	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	81
PID 1456 wrote to memory of 844	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	82
PID 1456 wrote to memory of 844	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	82
PID 1456 wrote to memory of 844	1456	2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe	82
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 844 wrote to memory of 3428	844	6D00D3EF97.exe	83
PID 3428 wrote to memory of 1128	3428	6D00D3EF97.exe	84
PID 3428 wrote to memory of 1128	3428	6D00D3EF97.exe	84
PID 3428 wrote to memory of 1128	3428	6D00D3EF97.exe	84
PID 3428 wrote to memory of 1188	3428	6D00D3EF97.exe	85
PID 3428 wrote to memory of 1188	3428	6D00D3EF97.exe	85
PID 3428 wrote to memory of 1188	3428	6D00D3EF97.exe	85
PID 2132 wrote to memory of 1544	2132	cmd.exe	91
PID 2132 wrote to memory of 1544	2132	cmd.exe	91
PID 2132 wrote to memory of 3292	2132	cmd.exe	94
PID 2132 wrote to memory of 3292	2132	cmd.exe	94
PID 2132 wrote to memory of 796	2132	cmd.exe	95
PID 2132 wrote to memory of 796	2132	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe
"C:\Users\Admin\AppData\Local\Temp\2fdb9fa88fa2082583d32914c3863521604dd32218c26a0f35e0141ba35408b7.exe"
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1456
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c echo 75BB576D00D3EF97
  2⤵
  PID:3220
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c ren "C:\Users\Admin\AppData\Local\Temp\75BB57" 7za.exe
  2⤵
  PID:1220
- C:\Users\Admin\AppData\Local\Temp\7za.exe
  "C:\Users\Admin\AppData\Local\Temp\7za.exe" e "C:\Users\Admin\AppData\Local\Temp\6D00D3EF97" -y -p6D00D3EF97
  2⤵
  - Executes dropped EXE
  PID:576
- C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
  "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\6D00D3EF97.doc" /o ""
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:3168
- C:\Users\Admin\AppData\Local\Temp\6D00D3EF97.exe
  "C:\Users\Admin\AppData\Local\Temp\6D00D3EF97.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:844
- - C:\Users\Admin\AppData\Local\Temp\6D00D3EF97.exe
    C:\Users\Admin\AppData\Local\Temp\6D00D3EF97.exe
    3⤵
    - Executes dropped EXE
    - Drops startup file
    - Modifies registry class
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3428
  - - C:\Windows\SysWOW64\mshta.exe
      "C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\Desktop\VAULT.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
      4⤵
      PID:1128
  - - C:\Windows\SysWOW64\wbem\WMIC.exe
      "C:\Windows\System32\wbem\WMIC.exe" process call create "cmd.exe /c vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures"
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1188

C:\Windows\system32\cmd.exe
cmd.exe /c vssadmin.exe delete shadows /all /quiet & bcdedit.exe /set {default} recoveryenabled no & bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
1⤵
- Process spawned unexpected child process
- Suspicious use of WriteProcessMemory
PID:2132
- C:\Windows\system32\vssadmin.exe
  vssadmin.exe delete shadows /all /quiet
  2⤵
  - Interacts with shadow copies
  PID:1544
- C:\Windows\system32\bcdedit.exe
  bcdedit.exe /set {default} recoveryenabled no
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:3292
- C:\Windows\system32\bcdedit.exe
  bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures
  2⤵
  - Modifies boot configuration data using bcdedit
  PID:796

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2136

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

T1107

Credential Access

Credentials in Files

T1081

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/844-128-0x00000000009E0000-0x00000000009E5000-memory.dmp

Filesize
20KB

Download
memory/3168-134-0x00007FF8A3000000-0x00007FF8A5B23000-memory.dmp

Filesize
43.1MB

Download
memory/3168-132-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/3168-133-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/3168-135-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/3168-130-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/3168-143-0x00007FF89BB20000-0x00007FF89DA15000-memory.dmp

Filesize
31.0MB

Download
memory/3168-131-0x00007FF882460000-0x00007FF882470000-memory.dmp

Filesize
64KB

Download
memory/3168-141-0x00007FF89DD70000-0x00007FF89EE5E000-memory.dmp

Filesize
16.9MB

Download
memory/3428-125-0x0000000000400000-0x0000000000E28000-memory.dmp

Filesize
10.2MB

Download
memory/3428-129-0x0000000000400000-0x000000000041A000-memory.dmp

Filesize
104KB

Download