f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1

General

Target

f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
Size

554KB
MD5

3ad90c3efdecc0984b6e4b6b411151e5
SHA1

422506ddf8fa1a1056173309e1c42343b2adebb7
SHA256

f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1
SHA512

f37f5110595f4e86e50671300567622e942648bb0f479529c0e15350d4b4fc58854fa54d1dea445569450828039d23d7c3e7221b2fc9a839c7e9e85e78ae6a2d

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\rpydulel = "\"C:\\Windows\\atykiboq.exe\""	explorer.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

Processes:

f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exef6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe

description	pid	process	target process
PID 784 set thread context of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 1880 set thread context of 2000	1880	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	explorer.exe

Drops file in Windows directory 2 IoCs

Processes:

explorer.exe

description ioc process

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

1944 vssadmin.exe

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

pid	process
1944	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:

f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe

pid process

784 f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vssvc.exe

description pid process

Token: SeBackupPrivilege 1648 vssvc.exe
Token: SeRestorePrivilege 1648 vssvc.exe
Token: SeAuditPrivilege 1648 vssvc.exe

pid	process
784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe

description	pid	process
Token: SeBackupPrivilege	1648	vssvc.exe
Token: SeRestorePrivilege	1648	vssvc.exe
Token: SeAuditPrivilege	1648	vssvc.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exef6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exeexplorer.exe

description	pid	process	target process
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 784 wrote to memory of 1880	784	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
PID 1880 wrote to memory of 2000	1880	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	explorer.exe
PID 1880 wrote to memory of 2000	1880	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	explorer.exe
PID 1880 wrote to memory of 2000	1880	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	explorer.exe
PID 1880 wrote to memory of 2000	1880	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	explorer.exe
PID 1880 wrote to memory of 2000	1880	f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe	explorer.exe
PID 2000 wrote to memory of 1944	2000	explorer.exe	vssadmin.exe
PID 2000 wrote to memory of 1944	2000	explorer.exe	vssadmin.exe
PID 2000 wrote to memory of 1944	2000	explorer.exe	vssadmin.exe
PID 2000 wrote to memory of 1944	2000	explorer.exe	vssadmin.exe

C:\Users\Admin\AppData\Local\Temp\f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
"C:\Users\Admin\AppData\Local\Temp\f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:784

C:\Users\Admin\AppData\Local\Temp\f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe
"C:\Users\Admin\AppData\Local\Temp\f6445d2ba81a1f1d34600fd9fe7df82dbcdf264f35c7c7b5d9d7f3cc1ac682f1.exe"
2⤵
- Checks whether UAC is enabled
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1880

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:2000

C:\Windows\SysWOW64\vssadmin.exe
vssadmin.exe Delete Shadows /All /Quiet
4⤵
- Interacts with shadow copies
PID:1944

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1648

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

File Deletion

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Inhibit System Recovery

2

T1490

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Downloads

C:\ProgramData\ywynugoxasijikec\01000000

Filesize
554KB

MD5
2d601ef3e9c58772c9f767ebad2f4822

SHA1
d6f4fa5f7707c09083f0f40797ab036ff885cbfb

SHA256
d06aaad109f8c4329bca028d0451bdbdd68eb8fdc1c0396843d75f9a88c52a45

SHA512
9c389a5f9971a98628e98ab6b33948ade3173c0f11a445493260f67f5eed571e47e57dfe888e06b7464bc3534c346a3e82e605290063c18eef7daa168d849fcd

Download Submit
memory/784-54-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download
memory/1880-66-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-77-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-61-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-62-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-65-0x000000000040A61E-mapping.dmp

Download
memory/1880-64-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-58-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-68-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-60-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1880-55-0x0000000000400000-0x000000000043A000-memory.dmp

Filesize
232KB

Download
memory/1944-78-0x0000000000000000-mapping.dmp

Download
memory/2000-73-0x000000000009A160-mapping.dmp

Download
memory/2000-75-0x0000000075051000-0x0000000075053000-memory.dmp

Filesize
8KB

Download
memory/2000-71-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/2000-69-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/2000-79-0x0000000000080000-0x00000000000BC000-memory.dmp

Filesize
240KB

Download
memory/2000-80-0x0000000072CA1000-0x0000000072CA3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads