f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093

Resubmissions

19/11/2020, 14:39

201119-59epbrqadx 10

19/11/2020, 14:22

201119-ff99dc42e6 10

19/11/2020, 14:16

201119-298y5e8ncj 9

Analysis

max time kernel
135s
max time network
137s
platform
windows7_x64
resource
win7v20201028
submitted
19/11/2020, 14:16

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General

Target

f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe
Size

1.8MB
MD5

10d7151b9ee53b8da8ee6f85001ffb20
SHA1

76d33ef58ea7b012342d975d871db64840da9675
SHA256

f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093
SHA512

1c6d2d7f509b462b5d48db61817ee42a7204d10141c59394eb190d0dba733b831a6344bb85197dfac358939379e640c9f38732d376e28f92e187806ca574d10f

Score

9^/10

persistence ransomware

Malware Config

Signatures

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

File Deletion
T1107

Inhibit System Recovery
T1490
Grants admin privileges 1 TTPs
Uses net.exe to modify the user's privileges.

Account Manipulation
T1098

Modifies extensions of user files 3 IoCs

Ransomware generally changes the extension on encrypted files.

ransomware

description	ioc	Process
File created	C:\Users\Admin\Pictures\UseInstall.tif.REDROMAN	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe
File opened for modification	C:\Users\Admin\Pictures\BlockSave.tiff	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe
File created	C:\Users\Admin\Pictures\BlockSave.tiff.REDROMAN	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe

Drops startup file 1 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\OPENTHIS.html	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.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\Shadow Copy Optimization Writer	vssvc.exe
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

Interacts with shadow copies 2 TTPs 2 IoCs

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

ransomware

File Deletion

T1107

Inhibit System Recovery

T1490

pid	Process
1168	vssadmin.exe
2516	vssadmin.exe

Runs net.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1492	powershell.exe
580	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	powershell.exe
Token: SeDebugPrivilege	580	powershell.exe
Token: SeBackupPrivilege	2392	vssvc.exe
Token: SeRestorePrivilege	2392	vssvc.exe
Token: SeAuditPrivilege	2392	vssvc.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 756 wrote to memory of 1492	756	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe	26
PID 756 wrote to memory of 1492	756	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe	26
PID 756 wrote to memory of 1492	756	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe	26
PID 756 wrote to memory of 580	756	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe	32
PID 756 wrote to memory of 580	756	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe	32
PID 756 wrote to memory of 580	756	f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe	32
PID 580 wrote to memory of 768	580	powershell.exe	34
PID 580 wrote to memory of 768	580	powershell.exe	34
PID 580 wrote to memory of 768	580	powershell.exe	34
PID 768 wrote to memory of 1168	768	cmd.exe	36
PID 768 wrote to memory of 1168	768	cmd.exe	36
PID 768 wrote to memory of 1168	768	cmd.exe	36
PID 768 wrote to memory of 2516	768	cmd.exe	40
PID 768 wrote to memory of 2516	768	cmd.exe	40
PID 768 wrote to memory of 2516	768	cmd.exe	40
PID 768 wrote to memory of 2548	768	cmd.exe	41
PID 768 wrote to memory of 2548	768	cmd.exe	41
PID 768 wrote to memory of 2548	768	cmd.exe	41
PID 2548 wrote to memory of 2560	2548	net.exe	42
PID 2548 wrote to memory of 2560	2548	net.exe	42
PID 2548 wrote to memory of 2560	2548	net.exe	42
PID 768 wrote to memory of 2588	768	cmd.exe	43
PID 768 wrote to memory of 2588	768	cmd.exe	43
PID 768 wrote to memory of 2588	768	cmd.exe	43
PID 2588 wrote to memory of 2600	2588	net.exe	44
PID 2588 wrote to memory of 2600	2588	net.exe	44
PID 2588 wrote to memory of 2600	2588	net.exe	44

C:\Users\Admin\AppData\Local\Temp\f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe
"C:\Users\Admin\AppData\Local\Temp\f0fbd0654d4bf299c08f1f83e7b6c3a1f332b49c24b3cf0b9b87757b8c13f093.bin.sample.exe"
1⤵
- Modifies extensions of user files
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:756
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" -WindowStyle Hidden get-wmiobject win32_computersystem | "fl model"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1492
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell" Start-Process C:\ProgramData\amdkey.bat -Verb runas
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:580
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C "C:\ProgramData\amdkey.bat"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:768
  - - C:\Windows\system32\vssadmin.exe
      vssadmin.exe Delete Shadows /All /Quiet
      4⤵
      Interacts with shadow copies
      PID:1168
  - - C:\Windows\system32\vssadmin.exe
      vssadmin.exe Resize ShadowStorage /For=C: /On=C: /MaxSize=320MB
      4⤵
      Interacts with shadow copies
      PID:2516
  - - C:\Windows\system32\net.exe
      net user /add RedROMAN p4zzaub71h
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2548
    - - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 user /add RedROMAN p4zzaub71h
        5⤵
        
        PID:2560
  - - C:\Windows\system32\net.exe
      net localgroup administrators RedROMAN /add
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2588
    - - C:\Windows\system32\net1.exe
        
        C:\Windows\system32\net1 localgroup administrators RedROMAN /add
        5⤵
        
        PID:2600

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Modifies service
- Suspicious use of AdjustPrivilegeToken
PID:2392

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Account Manipulation

T1098

Modify Existing Service

T1031

Privilege Escalation

Defense Evasion

File Deletion

T1107

Modify Registry

T1112

Credential Access

Account Manipulation

T1098

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

T1490

Replay Monitor

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Downloads

memory/580-12-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/580-14-0x0000000002440000-0x0000000002441000-memory.dmp

Filesize
4KB

Download
memory/580-17-0x000000001BC40000-0x000000001BC41000-memory.dmp

Filesize
4KB

Download
memory/580-15-0x0000000002510000-0x0000000002511000-memory.dmp

Filesize
4KB

Download
memory/580-13-0x000000001AE40000-0x000000001AE41000-memory.dmp

Filesize
4KB

Download
memory/580-11-0x000007FEF5F30000-0x000007FEF691C000-memory.dmp

Filesize
9.9MB

Download
memory/756-0-0x000000013F8A0000-0x000000013FA71000-memory.dmp

Filesize
1.8MB

Download
memory/1492-4-0x000000001AC60000-0x000000001AC61000-memory.dmp

Filesize
4KB

Download
memory/1492-6-0x00000000027B0000-0x00000000027B1000-memory.dmp

Filesize
4KB

Download
memory/1492-2-0x000007FEF5FA0000-0x000007FEF698C000-memory.dmp

Filesize
9.9MB

Download
memory/1492-5-0x00000000024A0000-0x00000000024A1000-memory.dmp

Filesize
4KB

Download
memory/1492-3-0x0000000002270000-0x0000000002271000-memory.dmp

Filesize
4KB

Download
memory/1492-7-0x000000001B6C0000-0x000000001B6C1000-memory.dmp

Filesize
4KB

Download
memory/1492-8-0x000000001C4F0000-0x000000001C4F1000-memory.dmp

Filesize
4KB

Download