a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64

General

Target

a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
Size

554KB
MD5

6359a6e05434a09f9cdfac39c7a8e070
SHA1

adbb3616b04e52e95eb5628193ef6f544e60c830
SHA256

a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64
SHA512

474aa3e2f8bfd35b3870ed95fbd84a3cf779317ad16e0eeced2b857a3b79f1d62c2d98d3fcb0f7fa5342f4ccf865115065380fe789fae49a33e9afc615c0e0eb

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\aqometyv = "\"C:\\Windows\\ozoxidpv.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exea941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe

description	pid	process	target process
PID 1352 set thread context of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1768 set thread context of 1112	1768	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

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

1744 vssadmin.exe

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

pid	process
1744	vssadmin.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 3 IoCs

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	explorer.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV9 = "0"	explorer.exe
Key created	\REGISTRY\USER\S-1-5-21-790309383-526510583-3802439154-1000\Software\Microsoft\Internet Explorer\PhishingFilter	explorer.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe

pid process

1352 a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1216 vssvc.exe
Token: SeRestorePrivilege 1216 vssvc.exe
Token: SeAuditPrivilege 1216 vssvc.exe

pid	process
1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe

description	pid	process
Token: SeBackupPrivilege	1216	vssvc.exe
Token: SeRestorePrivilege	1216	vssvc.exe
Token: SeAuditPrivilege	1216	vssvc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exea941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exeexplorer.exe

description	pid	process	target process
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1352 wrote to memory of 1768	1352	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
PID 1768 wrote to memory of 1112	1768	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	explorer.exe
PID 1768 wrote to memory of 1112	1768	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	explorer.exe
PID 1768 wrote to memory of 1112	1768	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	explorer.exe
PID 1768 wrote to memory of 1112	1768	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	explorer.exe
PID 1768 wrote to memory of 1112	1768	a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe	explorer.exe
PID 1112 wrote to memory of 1744	1112	explorer.exe	vssadmin.exe
PID 1112 wrote to memory of 1744	1112	explorer.exe	vssadmin.exe
PID 1112 wrote to memory of 1744	1112	explorer.exe	vssadmin.exe
PID 1112 wrote to memory of 1744	1112	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
"C:\Users\Admin\AppData\Local\Temp\a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1352

C:\Users\Admin\AppData\Local\Temp\a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe
"C:\Users\Admin\AppData\Local\Temp\a941b94ee56c5ac8a373463410c14e1e56d118662bfc743cd310c0c28c529e64.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1768

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:1112

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:1744

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1216

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
1722166acc6d0eb1c66d41433075e58e

SHA1
d6efdc997128d4b78885cccbdeec1be660c51a36

SHA256
699c5cce105290a658727f6a66208b2665f6142ccf80aa107bb930169849da04

SHA512
8c488999a7c038a7648ca69d63c96026d7f3f9eef860be56847fdac1cc869045fc15db3ec76e23ec84d0cbf1d1017f35b29018aa872db21183a20bf7124b7b6e

Download Submit
memory/1112-70-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1112-80-0x0000000072931000-0x0000000072933000-memory.dmp

Filesize
8KB

Download
memory/1112-78-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1112-76-0x0000000074DD1000-0x0000000074DD3000-memory.dmp

Filesize
8KB

Download
memory/1112-74-0x000000000009A160-mapping.dmp

Download
memory/1112-72-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/1352-54-0x0000000076241000-0x0000000076243000-memory.dmp

Filesize
8KB

Download
memory/1744-79-0x0000000000000000-mapping.dmp

Download
memory/1768-61-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-69-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-68-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-66-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-65-0x000000000040A61E-mapping.dmp

Download
memory/1768-64-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-62-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-60-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-55-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1768-58-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads