77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4

Analysis

max time kernel
140s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20230220-en
resource tags

arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
submitted
02-03-2023 08:13

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General

Target

77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe
Size

1.4MB
MD5

c9bac05e33c3be03dee25a062ac40a55
SHA1

8e23195dc420793092eb17201810e8a522065c52
SHA256

77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4
SHA512

388c5ba9530e5216cdf3639555389fbfa4f0ee8def369d29d876351c95d852bed28b8e9fe52cab4a8df90efc3a73edc128b84db53dd1a7aec4469594cf35fc12
SSDEEP

24576:gqLLdb+QD1dK+a5rprVe/tfA+zTQipSgMnTJm0ImIQXk1RkEHDDfZ+hXVg60BlU+:HLdb9D1dKHU17HpSlTJ9ImIck7VHXfZp

Score

7^/10

Malware Config

Signatures

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:

77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1529757233-3489015626-3409890339-1000\Control Panel\International\Geo\Nation	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe

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

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

4424 1528 WerFault.exe 77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe

pid	pid_target	process	target process
4424	1528	WerFault.exe	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe

Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe

pid	process
1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe
1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe
1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe
1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe
1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.execmd.exe

description	pid	process	target process
PID 1528 wrote to memory of 4484	1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe	cmd.exe
PID 1528 wrote to memory of 4484	1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe	cmd.exe
PID 1528 wrote to memory of 4484	1528	77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe	cmd.exe
PID 4484 wrote to memory of 2296	4484	cmd.exe	netsh.exe
PID 4484 wrote to memory of 2296	4484	cmd.exe	netsh.exe
PID 4484 wrote to memory of 2296	4484	cmd.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe
"C:\Users\Admin\AppData\Local\Temp\77a8f55f8d23e0d7f0b816e2433f4c8cd0f6f8bd5b954f8a4b0b5b6ed560b3e4.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1528

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\VistaTcpOpen.bat" "
2⤵
- Suspicious use of WriteProcessMemory
PID:4484

C:\Windows\SysWOW64\netsh.exe
netsh int tcp set global autotuninglevel=disable
3⤵
PID:2296

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1528 -s 2164
2⤵
- Program crash
PID:4424

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1528 -ip 1528
1⤵
PID:5076

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\VistaTcpOpen.bat
Filesize
50B

MD5
bce66c36a8152279a15d3a9bde66cb41

SHA1
a2df532be03fb049829ad7e0a9658f41663f07d9

SHA256
a0c9a1753c6459da695ffab12a8a4922566a664a1063f22c453313afe2bfddc5

SHA512
95d1d55c424de373c0e148c4ea98f62d0a7cd287bf166d3de1a1893aa2e89e473dcdee1e081c7501269ba0d690c6a0e0d148a59a825ec40c6294117da8a727ca

Download Submit
memory/1528-136-0x0000000009E40000-0x0000000009E41000-memory.dmp

Filesize
4KB

Download
memory/1528-137-0x000000000F440000-0x000000000F441000-memory.dmp

Filesize
4KB

Download
memory/1528-138-0x000000000FB60000-0x000000000FB61000-memory.dmp

Filesize
4KB

Download
memory/1528-139-0x000000000FB80000-0x000000000FB81000-memory.dmp

Filesize
4KB

Download
memory/1528-186-0x0000000000400000-0x0000000001400000-memory.dmp

Filesize
16.0MB

Download
memory/1528-187-0x0000000009E40000-0x0000000009E41000-memory.dmp

Filesize
4KB

Download
memory/1528-188-0x000000000F440000-0x000000000F441000-memory.dmp

Filesize
4KB

Download
memory/1528-189-0x000000000FB60000-0x000000000FB61000-memory.dmp

Filesize
4KB

Download
memory/1528-190-0x000000000FB80000-0x000000000FB81000-memory.dmp

Filesize
4KB

Download