9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c

General

Target

9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
Size

399KB
MD5

5c1914a1d3b7ccaebcfe1a6f8e05bfcf
SHA1

21f033a91fc03a14b41490e2a17244f88bc336ba
SHA256

9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c
SHA512

927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b
SSDEEP

6144:WAZRkz3xBb+XflYP4ZJhjaYYXDMBL3cN8a0SF1TCqzR7FL:H7g3zqlYPsJhjEMBLm8AdN5

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

yxosjapc.exe

pid process

1276 yxosjapc.exe

pid	process
1276	yxosjapc.exe

Loads dropped DLL 2 IoCs

Processes:

9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe

pid	process
1552	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
1552	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

yxosjapc.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\NUMxOTE0QTFEM0I3Q0NBRU = "C:\\ProgramData\\yxosjapc.exe"	yxosjapc.exe

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

System Information Discovery
T1082

Checks processor information in registry 2 TTPs 4 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exeyxosjapc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	yxosjapc.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	yxosjapc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exeyxosjapc.exe

description	pid	process
Token: SeDebugPrivilege	1552	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
Token: SeDebugPrivilege	1276	yxosjapc.exe

Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

DllHost.exe

pid process

896 DllHost.exe

pid	process
896	DllHost.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe

description	pid	process	target process
PID 1552 wrote to memory of 1276	1552	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe	yxosjapc.exe
PID 1552 wrote to memory of 1276	1552	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe	yxosjapc.exe
PID 1552 wrote to memory of 1276	1552	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe	yxosjapc.exe
PID 1552 wrote to memory of 1276	1552	9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe	yxosjapc.exe

C:\Users\Admin\AppData\Local\Temp\9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe
"C:\Users\Admin\AppData\Local\Temp\9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c.exe"
1⤵
- Loads dropped DLL
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1552

C:\ProgramData\yxosjapc.exe
"C:\ProgramData\yxosjapc.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Checks processor information in registry
- Suspicious use of AdjustPrivilegeToken
PID:1276

C:\Windows\SysWOW64\DllHost.exe
C:\Windows\SysWOW64\DllHost.exe /Processid:{76D0CB12-7604-4048-B83C-1005C7DDC503}
1⤵
- Suspicious use of FindShellTrayWindow
PID:896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\yxosjapc.exe

Filesize
399KB

MD5
5c1914a1d3b7ccaebcfe1a6f8e05bfcf

SHA1
21f033a91fc03a14b41490e2a17244f88bc336ba

SHA256
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c

SHA512
927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b

Download Submit
C:\ProgramData\yxosjapc.exe

Filesize
399KB

MD5
5c1914a1d3b7ccaebcfe1a6f8e05bfcf

SHA1
21f033a91fc03a14b41490e2a17244f88bc336ba

SHA256
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c

SHA512
927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b

Download Submit
C:\Users\Admin\AppData\Roaming\10.jpg

Filesize
34KB

MD5
57fc2259285f11a3425a0e753b76c92a

SHA1
0301e5654c0c87b4a05def68fc4c03995b6fbb04

SHA256
7108556dc64b5f60303d1cdc8a10419be7ef5045cd90bf511ff86c515b4fd270

SHA512
7d30b68f91b803fc0b20ea90a8ab554d95ac6c478da5e10014d72d00c138e184f92182dc539ec215d013b6c15e64901f7791722295f96cdb3f97cb15f8daa043

Download Submit
\ProgramData\yxosjapc.exe

Filesize
399KB

MD5
5c1914a1d3b7ccaebcfe1a6f8e05bfcf

SHA1
21f033a91fc03a14b41490e2a17244f88bc336ba

SHA256
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c

SHA512
927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b

Download Submit
\ProgramData\yxosjapc.exe

Filesize
399KB

MD5
5c1914a1d3b7ccaebcfe1a6f8e05bfcf

SHA1
21f033a91fc03a14b41490e2a17244f88bc336ba

SHA256
9f51d6e43b7c3ce33ceb82caebcc5f7768afe7f987e78c4c3294612303fec83c

SHA512
927c8bf70ae806b7876558f17e1118dbcb1d1f7aa28ea478e276b871f80ae71239db6bbcaf67f6cebb35b84965bf56af58c3335d2bf896065e95d419fd89b59b

Download Submit
memory/1276-60-0x0000000000000000-mapping.dmp

Download
memory/1276-65-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1276-66-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1552-54-0x0000000075681000-0x0000000075683000-memory.dmp

Filesize
8KB

Download
memory/1552-55-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download
memory/1552-64-0x0000000074530000-0x0000000074ADB000-memory.dmp

Filesize
5.7MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads