wastedlocker | 905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7v20210410
submitted
26/07/2021, 12:42

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General

Target

905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe
Size

1.2MB
MD5

2cc4534b0dd0e1c8d5b89644274a10c1
SHA1

735ee2c15c0b7172f65d39f0fd33b9186ee69653
SHA256

905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a
SHA512

a842b2d171aa6efa1b391d5d0f84663e78021b485555e2bf10a5e589d8652057f5abbd88e1a5ec628b714692ec5d63c3172894aa7846d5897e87d99dad67e2b8

Score

10^/10

wastedlocker cryptone discovery exploit packer ransomware

Malware Config

Signatures

WastedLocker
Ransomware family seen in the wild since May 2020.
ransomware wastedlocker

CryptOne packer 4 IoCs

Detects CryptOne packer defined in NCC blogpost.

cryptone packer

resource	yara_rule
behavioral1/files/0x00040000000130df-66.dat	cryptone
behavioral1/files/0x00040000000130df-70.dat	cryptone
behavioral1/files/0x0005000000005668-72.dat	cryptone
behavioral1/files/0x0005000000005668-74.dat	cryptone

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

File Deletion
T1107

Inhibit System Recovery
T1490

Executes dropped EXE 2 IoCs

pid	Process
1272	Options:bin
752	Options.exe

Modifies extensions of user files 12 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File opened for modification	C:\Users\Admin\Pictures\BackupClear.crw.garminwasted	Options.exe
File created	C:\Users\Admin\Pictures\RedoTest.tif.garminwasted_info	Options.exe
File opened for modification	C:\Users\Admin\Pictures\RedoTest.tif.garminwasted	Options.exe
File created	C:\Users\Admin\Pictures\SelectOpen.crw.garminwasted_info	Options.exe
File renamed	C:\Users\Admin\Pictures\SelectOpen.crw => C:\Users\Admin\Pictures\SelectOpen.crw.garminwasted	Options.exe
File opened for modification	C:\Users\Admin\Pictures\SelectOpen.crw.garminwasted	Options.exe
File created	C:\Users\Admin\Pictures\BackupClear.crw.garminwasted_info	Options.exe
File renamed	C:\Users\Admin\Pictures\BackupClear.crw => C:\Users\Admin\Pictures\BackupClear.crw.garminwasted	Options.exe
File renamed	C:\Users\Admin\Pictures\RedoTest.tif => C:\Users\Admin\Pictures\RedoTest.tif.garminwasted	Options.exe
File created	C:\Users\Admin\Pictures\SendMove.tif.garminwasted_info	Options.exe
File renamed	C:\Users\Admin\Pictures\SendMove.tif => C:\Users\Admin\Pictures\SendMove.tif.garminwasted	Options.exe
File opened for modification	C:\Users\Admin\Pictures\SendMove.tif.garminwasted	Options.exe

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
1660	takeown.exe
1700	icacls.exe

Deletes itself 1 IoCs

pid	Process
1324	cmd.exe

Loads dropped DLL 2 IoCs

pid	Process
1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe
1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
1660	takeown.exe
1700	icacls.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Options.exe	Options:bin
File opened for modification	C:\Windows\SysWOW64\Options.exe	attrib.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
1424	vssadmin.exe

NTFS ADS 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Options:bin	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeBackupPrivilege	1788	vssvc.exe
Token: SeRestorePrivilege	1788	vssvc.exe
Token: SeAuditPrivilege	1788	vssvc.exe

Suspicious use of WriteProcessMemory 52 IoCs

description	pid	Process	procid_target
PID 1044 wrote to memory of 1272	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	26
PID 1044 wrote to memory of 1272	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	26
PID 1044 wrote to memory of 1272	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	26
PID 1044 wrote to memory of 1272	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	26
PID 1272 wrote to memory of 1424	1272	Options:bin	27
PID 1272 wrote to memory of 1424	1272	Options:bin	27
PID 1272 wrote to memory of 1424	1272	Options:bin	27
PID 1272 wrote to memory of 1424	1272	Options:bin	27
PID 1272 wrote to memory of 1660	1272	Options:bin	31
PID 1272 wrote to memory of 1660	1272	Options:bin	31
PID 1272 wrote to memory of 1660	1272	Options:bin	31
PID 1272 wrote to memory of 1660	1272	Options:bin	31
PID 1272 wrote to memory of 1700	1272	Options:bin	33
PID 1272 wrote to memory of 1700	1272	Options:bin	33
PID 1272 wrote to memory of 1700	1272	Options:bin	33
PID 1272 wrote to memory of 1700	1272	Options:bin	33
PID 752 wrote to memory of 1048	752	Options.exe	37
PID 752 wrote to memory of 1048	752	Options.exe	37
PID 752 wrote to memory of 1048	752	Options.exe	37
PID 752 wrote to memory of 1048	752	Options.exe	37
PID 1048 wrote to memory of 932	1048	cmd.exe	39
PID 1048 wrote to memory of 932	1048	cmd.exe	39
PID 1048 wrote to memory of 932	1048	cmd.exe	39
PID 1048 wrote to memory of 932	1048	cmd.exe	39
PID 1272 wrote to memory of 1820	1272	Options:bin	42
PID 1272 wrote to memory of 1820	1272	Options:bin	42
PID 1272 wrote to memory of 1820	1272	Options:bin	42
PID 1272 wrote to memory of 1820	1272	Options:bin	42
PID 1044 wrote to memory of 1324	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	43
PID 1044 wrote to memory of 1324	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	43
PID 1044 wrote to memory of 1324	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	43
PID 1044 wrote to memory of 1324	1044	905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe	43
PID 1820 wrote to memory of 844	1820	cmd.exe	47
PID 1820 wrote to memory of 844	1820	cmd.exe	47
PID 1820 wrote to memory of 844	1820	cmd.exe	47
PID 1820 wrote to memory of 844	1820	cmd.exe	47
PID 1324 wrote to memory of 1712	1324	cmd.exe	48
PID 1324 wrote to memory of 1712	1324	cmd.exe	48
PID 1324 wrote to memory of 1712	1324	cmd.exe	48
PID 1324 wrote to memory of 1712	1324	cmd.exe	48
PID 1048 wrote to memory of 1348	1048	cmd.exe	49
PID 1048 wrote to memory of 1348	1048	cmd.exe	49
PID 1048 wrote to memory of 1348	1048	cmd.exe	49
PID 1048 wrote to memory of 1348	1048	cmd.exe	49
PID 1820 wrote to memory of 1692	1820	cmd.exe	51
PID 1820 wrote to memory of 1692	1820	cmd.exe	51
PID 1820 wrote to memory of 1692	1820	cmd.exe	51
PID 1820 wrote to memory of 1692	1820	cmd.exe	51
PID 1324 wrote to memory of 208	1324	cmd.exe	50
PID 1324 wrote to memory of 208	1324	cmd.exe	50
PID 1324 wrote to memory of 208	1324	cmd.exe	50
PID 1324 wrote to memory of 208	1324	cmd.exe	50

Views/modifies file attributes 1 TTPs 3 IoCs

evasion

Hidden Files and Directories

T1158

pid	Process
1348	attrib.exe
208	attrib.exe
1692	attrib.exe

C:\Users\Admin\AppData\Local\Temp\905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe
"C:\Users\Admin\AppData\Local\Temp\905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe"
1⤵
- Loads dropped DLL
- NTFS ADS
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Users\Admin\AppData\Roaming\Options:bin
  C:\Users\Admin\AppData\Roaming\Options:bin -r
  2⤵
  - Executes dropped EXE
  - Drops file in System32 directory
  - Suspicious use of WriteProcessMemory
  PID:1272
- - C:\Windows\system32\vssadmin.exe
    C:\Windows\system32\vssadmin.exe Delete Shadows /All /Quiet
    3⤵
    - Interacts with shadow copies
    PID:1424
- - C:\Windows\SysWOW64\takeown.exe
    C:\Windows\system32\takeown.exe /F C:\Windows\system32\Options.exe
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1660
- - C:\Windows\SysWOW64\icacls.exe
    C:\Windows\system32\icacls.exe C:\Windows\system32\Options.exe /reset
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:1700
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Roaming\Options" & del "C:\Users\Admin\AppData\Roaming\Options"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1820
  - - C:\Windows\SysWOW64\choice.exe
      choice /t 10 /d y
      4⤵
      PID:844
  - - C:\Windows\SysWOW64\attrib.exe
      attrib -h "C:\Users\Admin\AppData\Roaming\Options"
      4⤵
      Views/modifies file attributes
      PID:1692
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Users\Admin\AppData\Local\Temp\905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe" & del "C:\Users\Admin\AppData\Local\Temp\905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe"
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1324
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:1712
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Users\Admin\AppData\Local\Temp\905ea119ad8d3e54cd228c458a1b5681abc1f35df782977a23812ec4efa0288a.sample.exe"
    3⤵
    - Views/modifies file attributes
    PID:208

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1788

C:\Windows\SysWOW64\Options.exe
C:\Windows\SysWOW64\Options.exe -s
1⤵
- Executes dropped EXE
- Modifies extensions of user files
- Suspicious use of WriteProcessMemory
PID:752
- C:\Windows\SysWOW64\cmd.exe
  cmd /c choice /t 10 /d y & attrib -h "C:\Windows\SysWOW64\Options.exe" & del "C:\Windows\SysWOW64\Options.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1048
- - C:\Windows\SysWOW64\choice.exe
    choice /t 10 /d y
    3⤵
    PID:932
- - C:\Windows\SysWOW64\attrib.exe
    attrib -h "C:\Windows\SysWOW64\Options.exe"
    3⤵
    - Drops file in System32 directory
    - Views/modifies file attributes
    PID:1348

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Hidden Files and Directories

T1158

Privilege Escalation

Defense Evasion

File Deletion

T1107

File and Directory Permissions Modification

T1222

Hidden Files and Directories

T1158

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

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Downloads

memory/752-76-0x0000000000400000-0x0000000000534000-memory.dmp

Filesize
1.2MB

Download
memory/1044-60-0x0000000075721000-0x0000000075723000-memory.dmp

Filesize
8KB

Download
memory/1044-62-0x0000000000400000-0x0000000000534000-memory.dmp

Filesize
1.2MB

Download
memory/1044-61-0x0000000000220000-0x0000000000230000-memory.dmp

Filesize
64KB

Download
memory/1272-69-0x0000000000400000-0x0000000000534000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads