951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8

Analysis

max time kernel
143s
max time network
158s
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 01:57

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General

Target

951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exe
Size

196KB
MD5

2798ffe8ecee2781804dc2db89e6d965
SHA1

97f415892e99d53f19d013893cd18e96c0d3698d
SHA256

951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8
SHA512

d349f8370a6018187d1a272597465529a7938df28c7971d4142e9447c3266d1f8ca6bb7d39996deb6869b1a4e375c26ebbc4770744f4f63669c9ff44e2c8ce98
SSDEEP

3072:6DeIb32lxEo16cc9fjw8hD5z0llx2VtJxBVhLJ:ab3kEo1BWj/hx078V9d

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

Processes:

server1.exe

pid process

4320 server1.exe

pid	process
4320	server1.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.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 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 value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

dw20.exe

description	pid	process
Token: SeRestorePrivilege	3516	dw20.exe
Token: SeBackupPrivilege	3516	dw20.exe
Token: SeBackupPrivilege	3516	dw20.exe
Token: SeBackupPrivilege	3516	dw20.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exeserver1.exe

description	pid	process	target process
PID 3008 wrote to memory of 4320	3008	951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exe	server1.exe
PID 3008 wrote to memory of 4320	3008	951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exe	server1.exe
PID 3008 wrote to memory of 4320	3008	951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exe	server1.exe
PID 4320 wrote to memory of 3516	4320	server1.exe	dw20.exe
PID 4320 wrote to memory of 3516	4320	server1.exe	dw20.exe
PID 4320 wrote to memory of 3516	4320	server1.exe	dw20.exe

C:\Users\Admin\AppData\Local\Temp\951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exe
"C:\Users\Admin\AppData\Local\Temp\951c352653556f4a856e327db94c359cc82b452ab36660a0e27c7f9428f8a4c8.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3008

C:\Users\Admin\AppData\Local\Temp\server1.exe
"C:\Users\Admin\AppData\Local\Temp\server1.exe"
2⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
PID:4320

C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
dw20.exe -x -s 824
3⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious use of AdjustPrivilegeToken
PID:3516

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

C:\Users\Admin\AppData\Local\Temp\server1.exe
Filesize
184KB

MD5
4fdc515c5f0a3106099e39e4edc3c370

SHA1
e1687d6d272e037bfd510a678fbcf347c5bd62fa

SHA256
8dc21b1e601ed3e915a5c9388e5ec0a5163b1ca37a4c826571be98229c230bf8

SHA512
c66926e060ed86048a5d794c42be237fcba035654fbb7c8184b8ee0aad5639e5c3278a62d827848b28646f052d4c25eec28d49ba599f3a3729f7d65e70eb86cd

Download Submit
C:\Users\Admin\AppData\Local\Temp\server1.exe
Filesize
184KB

MD5
4fdc515c5f0a3106099e39e4edc3c370

SHA1
e1687d6d272e037bfd510a678fbcf347c5bd62fa

SHA256
8dc21b1e601ed3e915a5c9388e5ec0a5163b1ca37a4c826571be98229c230bf8

SHA512
c66926e060ed86048a5d794c42be237fcba035654fbb7c8184b8ee0aad5639e5c3278a62d827848b28646f052d4c25eec28d49ba599f3a3729f7d65e70eb86cd

Download Submit
memory/3516-136-0x0000000000000000-mapping.dmp

Download
memory/4320-132-0x0000000000000000-mapping.dmp

Download
memory/4320-135-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4320-137-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download
memory/4320-138-0x0000000075310000-0x00000000758C1000-memory.dmp

Filesize
5.7MB

Download