22240b86f52405d2d69523a3c74e5aa576e5251d72cccbf07e91273e4391a324

General

Target

RsEncP.exe
Size

195KB
MD5

1e8c10aca8b1af079d130d59585bbe87
SHA1

fffad47c0363a714ad2b1804ec98fd86e1577e88
SHA256

22240b86f52405d2d69523a3c74e5aa576e5251d72cccbf07e91273e4391a324
SHA512

cddd29afc17bca6324aaf422aa197fe2b2343f587aeadd40b3b5e13cddebf94a65bf46ab87ba66288562d899357fbb726df127ce316c2d4e930f8415cee09ef8

Score

3^/10

Malware Config

Signatures

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 25 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\GPU	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry\DontShowMeThisDialogAgain	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\CompatibilityFlags = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\IETld\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\LowRegistry\DOMStorage	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\PageSetup	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\AdminActive\{66803A21-5824-11EC-8EC9-6E0E796DF1A1} = "0"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MINIE	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Zoom	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main	IEXPLORE.EXE
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\BrowserEmulation\LowMic	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\IntelliForms	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\InternetRegistry	iexplore.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\FullScreen = "no"	iexplore.exe
Set value (data)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Main\Window_Placement = 2c0000000200000003000000ffffffffffffffffffffffffffffffff2400000024000000aa04000089020000	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\Recovery\PendingRecovery\AdminActive = "0"	iexplore.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000\Software\Microsoft\Internet Explorer\MINIE\TabBandWidth = "500"	iexplore.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000_CLASSES\Local Settings\Software\Microsoft\Windows\Shell\MuiCache	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2955169046-2371869340-1800780948-1000_Classes\Local Settings	rundll32.exe

Opens file in notepad (likely ransom note) 2 IoCs

ransomware

pid	Process
1748	NOTEPAD.EXE
1500	NOTEPAD.EXE

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1820	RsEncP.exe
1820	RsEncP.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1820	RsEncP.exe
Token: 33	1704	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1704	AUDIODG.EXE
Token: 33	1704	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1704	AUDIODG.EXE

Suspicious use of FindShellTrayWindow 1 IoCs

pid	Process
1556	iexplore.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1556	iexplore.exe
1556	iexplore.exe
1780	IEXPLORE.EXE
1780	IEXPLORE.EXE

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1820 wrote to memory of 1556	1820	RsEncP.exe	29
PID 1820 wrote to memory of 1556	1820	RsEncP.exe	29
PID 1820 wrote to memory of 1556	1820	RsEncP.exe	29
PID 1820 wrote to memory of 1556	1820	RsEncP.exe	29
PID 1556 wrote to memory of 1780	1556	iexplore.exe	31
PID 1556 wrote to memory of 1780	1556	iexplore.exe	31
PID 1556 wrote to memory of 1780	1556	iexplore.exe	31
PID 1556 wrote to memory of 1780	1556	iexplore.exe	31
PID 956 wrote to memory of 1748	956	rundll32.exe	37
PID 956 wrote to memory of 1748	956	rundll32.exe	37
PID 956 wrote to memory of 1748	956	rundll32.exe	37
PID 960 wrote to memory of 1500	960	rundll32.exe	39
PID 960 wrote to memory of 1500	960	rundll32.exe	39
PID 960 wrote to memory of 1500	960	rundll32.exe	39

C:\Users\Admin\AppData\Local\Temp\RsEncP.exe
"C:\Users\Admin\AppData\Local\Temp\RsEncP.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Program Files\Internet Explorer\iexplore.exe
  "C:\Program Files\Internet Explorer\iexplore.exe" https://116.123.119.125:50007//Pages/ResultCollect/Msg_Pop.aspx?strKey=dDcyZkNRSExEVGowSXhvOUM1QXJYamFsQUNYcHdXajExOE9tV0xqczNoST0=&p_encode=dkc3aTlVZTdLWE1MZkJWaHc4aXg0OWF6UWJGTGFYL2J6dmI3bEhVK0Z2QVJnaEtlSmdyTHZhdUJZZTgzWmdjZ1NYY0E1blcxZld6SDQzcGN0clE2UTV2NVEreUhza1pOOVV0cyt2Y2hDU1FOdk9XbkdkS3FSS01LeVdzeERQb3NFNm5uc3BaZ3VhUHZIWjBpTVZtaUpRPT0=&p_ip=175.196.87.251&p_host=175.196.87.251
  2⤵
  - Modifies Internet Explorer settings
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1556
- - C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
    "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1556 CREDAT:275457 /prefetch:2
    3⤵
    - Modifies Internet Explorer settings
    - Suspicious use of SetWindowsHookEx
    PID:1780

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x17c
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1704

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\fa46ac485979471c9b9e9780945712ee.Recon
1⤵
- Modifies registry class
PID:1824

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\806f3a7dc96a40089f5981991b698a39.Recon
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:956
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\806f3a7dc96a40089f5981991b698a39.Recon
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:1748

C:\Windows\system32\rundll32.exe
"C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\Desktop\01bcc0e224b94fef965a277dd0cfef88.Recon
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:960
- C:\Windows\system32\NOTEPAD.EXE
  "C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\Desktop\01bcc0e224b94fef965a277dd0cfef88.Recon
  2⤵
  - Opens file in notepad (likely ransom note)
  PID:1500

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1820-55-0x0000000000390000-0x0000000000391000-memory.dmp

Filesize
4KB

Download
memory/1820-57-0x00000000757E1000-0x00000000757E3000-memory.dmp

Filesize
8KB

Download
memory/1820-58-0x0000000004DB0000-0x0000000004DB1000-memory.dmp

Filesize
4KB

Download
memory/1820-59-0x0000000004DB5000-0x0000000004DC6000-memory.dmp

Filesize
68KB

Download
memory/1824-62-0x000007FEFBD61000-0x000007FEFBD63000-memory.dmp

Filesize
8KB

Download

Resubmissions

Analysis

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