b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274

Analysis

max time kernel
172s
max time network
194s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
26-11-2022 22:45

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General

Target

b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe
Size

252KB
MD5

3ee7f6f8ecc7aa5eebec6e2768183f74
SHA1

cc7a374f855db0fddf3b0059363c13725613d1ba
SHA256

b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274
SHA512

350a1a6e99ef758ed08f7d01c16a50a9b627b6fb55c246664c15b44704fa8168c7d2d3aae1ca155a07722efea7f46465eca106750b698753c38df2427f2e9e76
SSDEEP

6144:i8bRwCxWXAS8ewZ2c5+BDTzmT8qNTqhnokgI5h:r1nxWQS8eHg+QbtqSk

Score

4^/10

Malware Config

Signatures

Drops file in Windows directory 1 IoCs

Processes:

dw20.exe

description ioc process

File created C:\Windows\AppCompat\Programs\Amcache.hve.tmp dw20.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File created	C:\Windows\AppCompat\Programs\Amcache.hve.tmp	dw20.exe

Checks processor information in registry 2 TTPs 3 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

dw20.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exedw20.exe

description	pid	process
Token: SeDebugPrivilege	4028	b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe
Token: SeRestorePrivilege	1396	dw20.exe
Token: SeBackupPrivilege	1396	dw20.exe
Token: SeBackupPrivilege	1396	dw20.exe
Token: SeBackupPrivilege	1396	dw20.exe
Token: SeBackupPrivilege	1396	dw20.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe

description	pid	process	target process
PID 4028 wrote to memory of 1396	4028	b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe	dw20.exe
PID 4028 wrote to memory of 1396	4028	b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe	dw20.exe
PID 4028 wrote to memory of 1396	4028	b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe
"C:\Users\Admin\AppData\Local\Temp\b54707455a020020585ad3a0ba361b5ec5d1d52fc82fe7130186a716887f1274.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4028

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 992
2⤵
- Drops file in Windows directory
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:1396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1396-134-0x0000000000000000-mapping.dmp

Download
memory/4028-132-0x00000000751C0000-0x0000000075771000-memory.dmp

Filesize
5.7MB

Download
memory/4028-133-0x00000000751C0000-0x0000000075771000-memory.dmp

Filesize
5.7MB

Download
memory/4028-135-0x00000000751C0000-0x0000000075771000-memory.dmp

Filesize
5.7MB

Download