suncrypt | 875473b38732ac69e3ebaaae4f6f4f3cb12534d4175de132c4eeeb97ba64d226

Analysis

max time kernel
67s
max time network
70s
platform
windows7_x64
resource
win7v20201028
submitted
08-03-2021 08:36

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General

Target

load.ps1
Size

1.4MB
MD5

09a05a2212bd2c0fe0e2881401fbff17
SHA1

fbb6f8dae1753cd2a282ee161bc5496486cc06f7
SHA256

b41a303a4caa71fa260dd601a796033d8bfebcaa6bd9dfd7ad956fac5229a735
SHA512

8d0dd3a7d6adaa690a3f7625a573b8c50cfa9d40fa17836b7e8ab8a10bfe67f4eaf0720cedda0c1d2986e7e70770a097ad8af2a9e24ccd595514a0384cbc275f

Score

10^/10

suncrypt ransomware

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
8	744	powershell.exe
9	744	powershell.exe

Drops desktop.ini file(s) 35 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Videos\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Desktop\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Documents\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Pictures\Sample Pictures\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Contacts\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Desktop\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Downloads\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\X6969WXQ\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Music\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Saved Games\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Libraries\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Pictures\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Documents\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Favorites\Links\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Searches\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Recorded TV\Sample Media\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Windows Mail\Stationery\Desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Music\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Videos\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\5JH7AFHU\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Favorites\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Links\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Pictures\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Music\Sample Music\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Recorded TV\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\6O9TWDTA\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\AppData\Local\Microsoft\Feeds Cache\XHJ74TZW\desktop.ini	powershell.exe
File opened for modification	C:\Users\Admin\Favorites\Links for United States\desktop.ini	powershell.exe
File opened for modification	C:\Users\Default\AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Downloads\desktop.ini	powershell.exe
File opened for modification	C:\Users\Public\Videos\Sample Videos\desktop.ini	powershell.exe

Enumerates connected drives 3 TTPs 24 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)	\??\H:	powershell.exe
File opened (read-only)	\??\V:	powershell.exe
File opened (read-only)	\??\N:	powershell.exe
File opened (read-only)	\??\M:	powershell.exe
File opened (read-only)	\??\R:	powershell.exe
File opened (read-only)	\??\U:	powershell.exe
File opened (read-only)	\??\O:	powershell.exe
File opened (read-only)	\??\G:	powershell.exe
File opened (read-only)	\??\W:	powershell.exe
File opened (read-only)	\??\E:	powershell.exe
File opened (read-only)	\??\I:	powershell.exe
File opened (read-only)	\??\K:	powershell.exe
File opened (read-only)	\??\B:	powershell.exe
File opened (read-only)	\??\Q:	powershell.exe
File opened (read-only)	\??\T:	powershell.exe
File opened (read-only)	\??\S:	powershell.exe
File opened (read-only)	\??\X:	powershell.exe
File opened (read-only)	\??\J:	powershell.exe
File opened (read-only)	\??\L:	powershell.exe
File opened (read-only)	\??\Z:	powershell.exe
File opened (read-only)	\??\Y:	powershell.exe
File opened (read-only)	\??\P:	powershell.exe
File opened (read-only)	\??\A:	powershell.exe
File opened (read-only)	\??\F:	powershell.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1096	powershell.exe
1096	powershell.exe
744	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1096	powershell.exe
Token: SeDebugPrivilege	744	powershell.exe
Token: SeBackupPrivilege	1924	vssvc.exe
Token: SeRestorePrivilege	1924	vssvc.exe
Token: SeAuditPrivilege	1924	vssvc.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 1096 wrote to memory of 1352	1096	powershell.exe	30
PID 1096 wrote to memory of 1352	1096	powershell.exe	30
PID 1096 wrote to memory of 1352	1096	powershell.exe	30
PID 1352 wrote to memory of 292	1352	csc.exe	31
PID 1352 wrote to memory of 292	1352	csc.exe	31
PID 1352 wrote to memory of 292	1352	csc.exe	31
PID 1096 wrote to memory of 744	1096	powershell.exe	32
PID 1096 wrote to memory of 744	1096	powershell.exe	32
PID 1096 wrote to memory of 744	1096	powershell.exe	32
PID 1096 wrote to memory of 744	1096	powershell.exe	32
PID 744 wrote to memory of 1484	744	powershell.exe	34
PID 744 wrote to memory of 1484	744	powershell.exe	34
PID 744 wrote to memory of 1484	744	powershell.exe	34
PID 744 wrote to memory of 1484	744	powershell.exe	34
PID 1484 wrote to memory of 1088	1484	csc.exe	35
PID 1484 wrote to memory of 1088	1484	csc.exe	35
PID 1484 wrote to memory of 1088	1484	csc.exe	35
PID 1484 wrote to memory of 1088	1484	csc.exe	35

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\load.ps1
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1096
- 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\tv2e22er\tv2e22er.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1352
- - 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\RES4885.tmp" "c:\Users\Admin\AppData\Local\Temp\tv2e22er\CSC4116CAC65DD4A4F80A2EF608D84EE62.TMP"
    3⤵
    PID:292
- 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\load.ps1"
  2⤵
  - Blocklisted process makes network request
  - Drops desktop.ini file(s)
  - Enumerates connected drives
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:744
- - 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\nn2egaw5\nn2egaw5.cmdline"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1484
  - - 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\RES706F.tmp" "c:\Users\Admin\AppData\Local\Temp\nn2egaw5\CSC8EB3440E7CC4AE9993B85AB26CFDCE7.TMP"
      4⤵
      PID:1088

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1924

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/744-24-0x0000000002750000-0x0000000002751000-memory.dmp

Filesize
4KB

Download
memory/744-31-0x00000000061E0000-0x00000000061E1000-memory.dmp

Filesize
4KB

Download
memory/744-56-0x00000000068E0000-0x000000000690D000-memory.dmp

Filesize
180KB

Download
memory/744-55-0x00000000068A0000-0x00000000068A1000-memory.dmp

Filesize
4KB

Download
memory/744-54-0x00000000064A0000-0x00000000064A1000-memory.dmp

Filesize
4KB

Download
memory/744-20-0x00000000761F1000-0x00000000761F3000-memory.dmp

Filesize
8KB

Download
memory/744-21-0x00000000737E0000-0x0000000073ECE000-memory.dmp

Filesize
6.9MB

Download
memory/744-22-0x0000000000BE0000-0x0000000000BE1000-memory.dmp

Filesize
4KB

Download
memory/744-23-0x0000000004800000-0x0000000004801000-memory.dmp

Filesize
4KB

Download
memory/744-46-0x00000000065C0000-0x00000000065C1000-memory.dmp

Filesize
4KB

Download
memory/744-25-0x0000000002752000-0x0000000002753000-memory.dmp

Filesize
4KB

Download
memory/744-26-0x00000000026C0000-0x00000000026C1000-memory.dmp

Filesize
4KB

Download
memory/744-27-0x0000000005240000-0x0000000005241000-memory.dmp

Filesize
4KB

Download
memory/744-45-0x0000000006470000-0x0000000006471000-memory.dmp

Filesize
4KB

Download
memory/744-38-0x000000007EF20000-0x000000007EF21000-memory.dmp

Filesize
4KB

Download
memory/744-36-0x0000000006290000-0x0000000006291000-memory.dmp

Filesize
4KB

Download
memory/744-37-0x0000000006530000-0x0000000006531000-memory.dmp

Filesize
4KB

Download
memory/1096-3-0x000007FEF5DA0000-0x000007FEF678C000-memory.dmp

Filesize
9.9MB

Download
memory/1096-2-0x000007FEFC121000-0x000007FEFC123000-memory.dmp

Filesize
8KB

Download
memory/1096-8-0x00000000024C4000-0x00000000024C6000-memory.dmp

Filesize
8KB

Download
memory/1096-6-0x0000000002640000-0x0000000002641000-memory.dmp

Filesize
4KB

Download
memory/1096-7-0x00000000024C0000-0x00000000024C2000-memory.dmp

Filesize
8KB

Download
memory/1096-5-0x000000001AA60000-0x000000001AA61000-memory.dmp

Filesize
4KB

Download
memory/1096-4-0x0000000002480000-0x0000000002481000-memory.dmp

Filesize
4KB

Download
memory/1096-18-0x0000000002540000-0x0000000002541000-memory.dmp

Filesize
4KB

Download
memory/1096-9-0x00000000023E0000-0x00000000023E1000-memory.dmp

Filesize
4KB

Download
memory/1096-10-0x000000001B890000-0x000000001B891000-memory.dmp

Filesize
4KB

Download
memory/1596-57-0x000007FEF7AA0000-0x000007FEF7D1A000-memory.dmp

Filesize
2.5MB

Download