bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

General

Target

bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe
Size

348KB
MD5

93130ffbb52ddd551dc5b0204792696e
SHA1

6423ca9fcdaf040656de35fcc20b939ec9531964
SHA256

bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e
SHA512

5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94
SSDEEP

6144:6dNafzK0YNeIbBsM/LD/DnEH52bCFDMWFM1Y7FYG/rHz/HxiZM:lQeiGUwH8WDMWF9FYc//ROM

Score

8^/10

bootkit persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

DirectX11_update.exe

pid process

988 DirectX11_update.exe
Deletes itself 1 IoCs

Processes:

DirectX11_update.exe

pid process

988 DirectX11_update.exe

pid	process
988	DirectX11_update.exe

pid	process
988	DirectX11_update.exe

Loads dropped DLL 6 IoCs

Processes:

bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exeDirectX11_update.exe

pid	process
1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe
1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe
1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe
988	DirectX11_update.exe
988	DirectX11_update.exe
988	DirectX11_update.exe

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
bootkit persistence

Bootkit
T1067

Processes:

DirectX11_update.exe

description ioc process

File opened for modification \??\PhysicalDrive0 DirectX11_update.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Suspicious behavior: RenamesItself 1 IoCs

Processes:

bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe

pid process

1884 bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe

description	ioc	process
File opened for modification	\??\PhysicalDrive0	DirectX11_update.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe

description	pid	process	target process
PID 1884 wrote to memory of 988	1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe	DirectX11_update.exe
PID 1884 wrote to memory of 988	1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe	DirectX11_update.exe
PID 1884 wrote to memory of 988	1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe	DirectX11_update.exe
PID 1884 wrote to memory of 988	1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe	DirectX11_update.exe
PID 1884 wrote to memory of 988	1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe	DirectX11_update.exe
PID 1884 wrote to memory of 988	1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe	DirectX11_update.exe
PID 1884 wrote to memory of 988	1884	bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe	DirectX11_update.exe

C:\Users\Admin\AppData\Local\Temp\bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe
"C:\Users\Admin\AppData\Local\Temp\bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e.exe"
1⤵
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:1884

C:\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
"C:\Users\Admin\AppData\Local\Temp\DirectX11_update.exe" C:\Users\Admin\AppData\Local\Temp\43F4.tmp
2⤵
- Executes dropped EXE
- Deletes itself
- Loads dropped DLL
- Writes to the Master Boot Record (MBR)
PID:988

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Bootkit

1

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
C:\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
\Users\Admin\AppData\Local\Temp\DirectX11_update.exe
Filesize
348KB

MD5
93130ffbb52ddd551dc5b0204792696e

SHA1
6423ca9fcdaf040656de35fcc20b939ec9531964

SHA256
bc5e603aab67cbd702053ef1fe0304e17e3d7dfce410909f62884e29f02fea6e

SHA512
5127828a56e8841e40b27626dc965b3511ca587060f9f82bd5d7138c8a3ea9d012bffd685acff7375090c401ff28a298afb4d82234fe12c10542b9bbc99cad94

Download Submit
memory/988-59-0x0000000000000000-mapping.dmp

Download
memory/988-66-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/988-69-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/988-70-0x0000000000230000-0x00000000002B3000-memory.dmp

Filesize
524KB

Download
memory/988-71-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1884-55-0x0000000075E31000-0x0000000075E33000-memory.dmp

Filesize
8KB

Download
memory/1884-54-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download
memory/1884-67-0x0000000000490000-0x00000000004DF000-memory.dmp

Filesize
316KB

Download
memory/1884-68-0x0000000000400000-0x0000000000483000-memory.dmp

Filesize
524KB

Download

Analysis

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