ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9

General

Target

ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
Size

554KB
MD5

eae7974d820bd517495222b9a616a5c5
SHA1

ed1344541be0cce3e93177ac577f56fa0b06b9f4
SHA256

ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9
SHA512

2cc45bdb0b359d65246b731f9b009de68c625fc667bcd5f19d8e5846a7b627af65cb78665f86d9913f398cf734fe00a65480612b4d3c083f6d661434f581c679

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
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\egalusiw = "\"C:\\Windows\\yhegakyw.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exeae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe

description	pid	process	target process
PID 1808 set thread context of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1632 set thread context of 1944	1632	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

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

808 vssadmin.exe

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

pid	process
808	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:

ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe

pid process

1808 ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1740 vssvc.exe
Token: SeRestorePrivilege 1740 vssvc.exe
Token: SeAuditPrivilege 1740 vssvc.exe

pid	process
1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe

description	pid	process
Token: SeBackupPrivilege	1740	vssvc.exe
Token: SeRestorePrivilege	1740	vssvc.exe
Token: SeAuditPrivilege	1740	vssvc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exeae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exeexplorer.exe

description	pid	process	target process
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1808 wrote to memory of 1632	1808	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
PID 1632 wrote to memory of 1944	1632	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	explorer.exe
PID 1632 wrote to memory of 1944	1632	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	explorer.exe
PID 1632 wrote to memory of 1944	1632	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	explorer.exe
PID 1632 wrote to memory of 1944	1632	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	explorer.exe
PID 1632 wrote to memory of 1944	1632	ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe	explorer.exe
PID 1944 wrote to memory of 808	1944	explorer.exe	vssadmin.exe
PID 1944 wrote to memory of 808	1944	explorer.exe	vssadmin.exe
PID 1944 wrote to memory of 808	1944	explorer.exe	vssadmin.exe
PID 1944 wrote to memory of 808	1944	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
"C:\Users\Admin\AppData\Local\Temp\ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1808

C:\Users\Admin\AppData\Local\Temp\ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe
"C:\Users\Admin\AppData\Local\Temp\ae25dc288f5ef1ecfe4f7d6728a1814020813d2958434a06011778c206f575c9.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1632

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:1944

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:808

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1740

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
c5601e89f4bfe5cd379c8ab61f1f6097

SHA1
cd94af1f1e85fac5c8d49e237d9520c04f484187

SHA256
ad96e48c1f59a3e104ef8f313b6892b7a6d7791098ddc2f995c9169a29cd1052

SHA512
c1609e27ca5c415503d41942762c1ec4daf558150e1b1cfddbe4463bac922b4908e4a83ac4b389bf8902ce860d17a29031d61f90b9b221e02664e9d0d92b9e90

Download Submit
memory/808-79-0x0000000000000000-mapping.dmp

Download
memory/1632-66-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-77-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-61-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-62-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-64-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-65-0x000000000040A61E-mapping.dmp

Download
memory/1632-55-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-68-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-60-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1632-58-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1808-54-0x0000000075BD1000-0x0000000075BD3000-memory.dmp

Filesize
8KB

Download
memory/1944-73-0x00000000000EA160-mapping.dmp

Download
memory/1944-75-0x0000000074751000-0x0000000074753000-memory.dmp

Filesize
8KB

Download
memory/1944-71-0x00000000000D0000-0x000000000010C000-memory.dmp

Filesize
240KB

Download
memory/1944-69-0x00000000000D0000-0x000000000010C000-memory.dmp

Filesize
240KB

Download
memory/1944-78-0x00000000000D0000-0x000000000010C000-memory.dmp

Filesize
240KB

Download
memory/1944-80-0x0000000072201000-0x0000000072203000-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