suncrypt | 3090bff3d16b0b150444c3bfb196229ba0ab0b6b826fa306803de0192beddb80

General

Target

3090bff3d16b0b150444c3bfb196229ba0ab0b6b826fa306803de0192beddb80.ps1
Size

1.4MB
MD5

d87fcd8d2bf450b0056a151e9a116f72
SHA1

48cb6bdbe092e5a90c778114b2dda43ce3221c9f
SHA256

3090bff3d16b0b150444c3bfb196229ba0ab0b6b826fa306803de0192beddb80
SHA512

61a636aca3d224dcd2ed29ca000cf0ecf88f51ffd7cb5182ea4599c9e889cb74b78824d93c7383457bd6d591506202527d44c6a15c93a9ab9cfc8230faddd04b

Score

10^/10

spyware ransomware suncrypt persistence

Malware Config

Signatures

SunCrypt Ransomware
Family which threatens to leak data alongside encrypting files. Has claimed to be collaborating with the Maze ransomware group.
ransomware suncrypt

Blacklisted process makes network request 1 IoCs

flow	pid	Process
14	2532	powershell.exe

Modifies extensions of user files 2 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File renamed	C:\Users\Admin\Pictures\ExportSwitch.raw => C:\Users\Admin\Pictures\ExportSwitch.raw.158CEC0D79CF37B7394521618F4090D3B5DC69021D791D3EB327F4E76188A565	powershell.exe
File renamed	C:\Users\Admin\Pictures\SetSync.crw => C:\Users\Admin\Pictures\SetSync.crw.2DEE2C086857C4B8599A3A6B40FC1BAB53EF32A8CE889ED61914F467B59CE034	powershell.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Word\STARTUP\YOUR_FILES_ARE_ENCRYPTED.HTML	powershell.exe

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

Data from Local System
T1005

Credentials in Files
T1081

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\T:	powershell.exe
File opened (read-only)	\??\U:	powershell.exe
File opened (read-only)	\??\O:	powershell.exe
File opened (read-only)	\??\H:	powershell.exe
File opened (read-only)	\??\L:	powershell.exe
File opened (read-only)	\??\Z:	powershell.exe
File opened (read-only)	\??\V:	powershell.exe
File opened (read-only)	\??\W:	powershell.exe
File opened (read-only)	\??\N:	powershell.exe
File opened (read-only)	\??\X:	powershell.exe
File opened (read-only)	\??\B:	powershell.exe
File opened (read-only)	\??\S:	powershell.exe
File opened (read-only)	\??\E:	powershell.exe
File opened (read-only)	\??\R:	powershell.exe
File opened (read-only)	\??\I:	powershell.exe
File opened (read-only)	\??\P:	powershell.exe
File opened (read-only)	\??\F:	powershell.exe
File opened (read-only)	\??\J:	powershell.exe
File opened (read-only)	\??\M:	powershell.exe
File opened (read-only)	\??\Q:	powershell.exe
File opened (read-only)	\??\G:	powershell.exe
File opened (read-only)	\??\K:	powershell.exe
File opened (read-only)	\??\Y:	powershell.exe

Modifies service 2 TTPs 5 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\SwProvider_{b5946137-7b9f-4925-af80-51abd60b20d5}	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Registry Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\COM+ REGDB Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\ASR Writer	vssvc.exe
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\VSS\Diag\Shadow Copy Optimization Writer	vssvc.exe

Suspicious behavior: EnumeratesProcesses 7 IoCs

pid	Process
3996	powershell.exe
3996	powershell.exe
3996	powershell.exe
3996	powershell.exe
2532	powershell.exe
2532	powershell.exe
2532	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3996	powershell.exe
Token: SeDebugPrivilege	2532	powershell.exe
Token: SeBackupPrivilege	2104	vssvc.exe
Token: SeRestorePrivilege	2104	vssvc.exe
Token: SeAuditPrivilege	2104	vssvc.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 3996 wrote to memory of 2184	3996	powershell.exe	73
PID 3996 wrote to memory of 2184	3996	powershell.exe	73
PID 2184 wrote to memory of 2248	2184	csc.exe	74
PID 2184 wrote to memory of 2248	2184	csc.exe	74
PID 3996 wrote to memory of 2532	3996	powershell.exe	75
PID 3996 wrote to memory of 2532	3996	powershell.exe	75
PID 3996 wrote to memory of 2532	3996	powershell.exe	75
PID 2532 wrote to memory of 1096	2532	powershell.exe	79
PID 2532 wrote to memory of 1096	2532	powershell.exe	79
PID 2532 wrote to memory of 1096	2532	powershell.exe	79
PID 1096 wrote to memory of 2072	1096	csc.exe	80
PID 1096 wrote to memory of 2072	1096	csc.exe	80
PID 1096 wrote to memory of 2072	1096	csc.exe	80

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\3090bff3d16b0b150444c3bfb196229ba0ab0b6b826fa306803de0192beddb80.ps1
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3996
- C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
  "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\ifztqixr\ifztqixr.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
    C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES360A.tmp" "c:\Users\Admin\AppData\Local\Temp\ifztqixr\CSC1FC823D78392455D8B78955CB732B1E.TMP"
    3⤵
    PID:2248
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe" -ep bypass -file "C:\Users\Admin\AppData\Local\Temp\3090bff3d16b0b150444c3bfb196229ba0ab0b6b826fa306803de0192beddb80.ps1"
  2⤵
  - Blacklisted process makes network request
  - Modifies extensions of user files
  - Drops startup file
  - Enumerates connected drives
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2532
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\lwir04ki\lwir04ki.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1096
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
      C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RES4E54.tmp" "c:\Users\Admin\AppData\Local\Temp\lwir04ki\CSC68B5A671BEF34D0698E49930B30A116.TMP"
      4⤵
      PID:2072

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:2104

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Modify Existing Service

1

T1031

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/2532-16-0x0000000007D50000-0x0000000007D51000-memory.dmp

Filesize
4KB

Download
memory/2532-15-0x0000000007380000-0x0000000007381000-memory.dmp

Filesize
4KB

Download
memory/2532-18-0x0000000007E60000-0x0000000007E61000-memory.dmp

Filesize
4KB

Download
memory/2532-33-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2532-20-0x0000000007CD0000-0x0000000007CD1000-memory.dmp

Filesize
4KB

Download
memory/2532-21-0x0000000008270000-0x0000000008271000-memory.dmp

Filesize
4KB

Download
memory/2532-22-0x0000000008590000-0x0000000008591000-memory.dmp

Filesize
4KB

Download
memory/2532-23-0x000000000BD10000-0x000000000BD11000-memory.dmp

Filesize
4KB

Download
memory/2532-24-0x000000000B2C0000-0x000000000B2C1000-memory.dmp

Filesize
4KB

Download
memory/2532-17-0x0000000007DC0000-0x0000000007DC1000-memory.dmp

Filesize
4KB

Download
memory/2532-14-0x0000000007540000-0x0000000007541000-memory.dmp

Filesize
4KB

Download
memory/2532-13-0x0000000006E90000-0x0000000006E91000-memory.dmp

Filesize
4KB

Download
memory/2532-12-0x0000000072B00000-0x00000000731EE000-memory.dmp

Filesize
6.9MB

Download
memory/2532-32-0x000000000B2E0000-0x000000000B2E1000-memory.dmp

Filesize
4KB

Download
memory/3996-2-0x000002CC72C20000-0x000002CC72C21000-memory.dmp

Filesize
4KB

Download
memory/3996-10-0x000002CC70500000-0x000002CC70501000-memory.dmp

Filesize
4KB

Download
memory/3996-0-0x00007FF880C40000-0x00007FF88162C000-memory.dmp

Filesize
9.9MB

Download
memory/3996-1-0x000002CC704B0000-0x000002CC704B1000-memory.dmp

Filesize
4KB

Download

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