c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689

General

Target

c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
Size

554KB
MD5

4f46d2cdc301f49467c127c86590605d
SHA1

0ba75a266db9818aa2d9c557b400c83c34e39cd9
SHA256

c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689
SHA512

d7bb4d71ff64a283f3262e7df53f0879bc7c3e72cd55ab09615da73a73614cc7d2f3f91918c4fede161db50fcdf4e984d96a94c50226baf8c0d970a7890e733c

Score

9^/10

evasion persistence ransomware trojan

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\uwyfyvus = "\"C:\\Windows\\ynupagew.exe\""	explorer.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exec417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe

description	pid	process	target process
PID 1936 set thread context of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1144 set thread context of 1980	1144	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Windows\ynupagew.exe explorer.exe
File created C:\Windows\ynupagew.exe explorer.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

Processes:

vssadmin.exe

pid process

952 vssadmin.exe

description	ioc	process
File opened for modification	C:\Windows\ynupagew.exe	explorer.exe
File created	C:\Windows\ynupagew.exe	explorer.exe

pid	process
952	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-1819626980-2277161760-1023733287-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe

pid process

1936 c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 280 vssvc.exe
Token: SeRestorePrivilege 280 vssvc.exe
Token: SeAuditPrivilege 280 vssvc.exe

pid	process
1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe

description	pid	process
Token: SeBackupPrivilege	280	vssvc.exe
Token: SeRestorePrivilege	280	vssvc.exe
Token: SeAuditPrivilege	280	vssvc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exec417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exeexplorer.exe

description	pid	process	target process
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1936 wrote to memory of 1144	1936	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
PID 1144 wrote to memory of 1980	1144	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	explorer.exe
PID 1144 wrote to memory of 1980	1144	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	explorer.exe
PID 1144 wrote to memory of 1980	1144	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	explorer.exe
PID 1144 wrote to memory of 1980	1144	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	explorer.exe
PID 1144 wrote to memory of 1980	1144	c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe	explorer.exe
PID 1980 wrote to memory of 952	1980	explorer.exe	vssadmin.exe
PID 1980 wrote to memory of 952	1980	explorer.exe	vssadmin.exe
PID 1980 wrote to memory of 952	1980	explorer.exe	vssadmin.exe
PID 1980 wrote to memory of 952	1980	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
"C:\Users\Admin\AppData\Local\Temp\c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1936

C:\Users\Admin\AppData\Local\Temp\c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe
"C:\Users\Admin\AppData\Local\Temp\c417e54393fc1fec30c21e58ff1850668daaf93803915fe7f9dc18debd86e689.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1144

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\system32\explorer.exe"
3⤵
- Adds Run key to start application
- Drops file in Windows directory
- Modifies Internet Explorer Phishing Filter
- Suspicious use of WriteProcessMemory
PID:1980

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:952

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:280

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

2

T1107

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\ywynugoxasijikec\01000000
Filesize
554KB

MD5
7aee994242c227ad796c2becc2659eee

SHA1
f96ec4ab9cf5582ae9fc20583e79fef7c1e124a4

SHA256
de6b780c7f20f23bce1fdf210a6e92b94e55726bf1327ab3c34a326f7c6ff547

SHA512
119632825ffca029bf0aad06c337bf31e1981726e4b493180f2d8a91c997f50ea44fbd6bd7bb70c8432fd8d420274771c510b8a3e02fbed8c0b9b23493c80168

Download Submit
memory/952-78-0x0000000000000000-mapping.dmp

Download
memory/1144-66-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-77-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-62-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-55-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-64-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-65-0x000000000040A61E-mapping.dmp

Download
memory/1144-58-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-68-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-61-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1144-60-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1936-54-0x00000000757C1000-0x00000000757C3000-memory.dmp

Filesize
8KB

Download
memory/1980-73-0x000000000009A160-mapping.dmp

Download
memory/1980-75-0x00000000745A1000-0x00000000745A3000-memory.dmp

Filesize
8KB

Download
memory/1980-71-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1980-69-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1980-79-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1980-80-0x0000000072141000-0x0000000072143000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads