721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665

Analysis

max time kernel
188s
max time network
191s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 11:01

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General

Target

721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe
Size

6KB
MD5

36a69823e81c218129a6ae074f4c2b05
SHA1

62b814ed01766762a5e56119017cb578013540a9
SHA256

721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665
SHA512

c5211f5cd603fde24bc8db8689c033d99a387cb16164a926f8ef9486902572e3126a38db1331829b69dc9d49fc7d42a2d8fa5e4776b2e5234503e41d8aa48a0b
SSDEEP

96:0Qow/xZj5/MsgsaGdebQqiI+ItWZ5jJbzClitMLgar2aaUMOAll:0QPZtkswGwbQqiI+IsjJilUpn+A3

Score

8^/10

upx

Malware Config

Signatures

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral2/memory/400-132-0x00000000003E0000-0x000000000040B000-memory.dmp	upx
behavioral2/memory/400-134-0x00000000003E0000-0x000000000040B000-memory.dmp	upx

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:

721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4060001867-1434967833-2212371794-1000\Control Panel\International\Geo\Nation	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

Drops file in Windows directory 3 IoCs

Processes:

721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

description	ioc	process
File opened for modification	C:\Windows\system32.exe	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe
File opened for modification	C:\Windows\kernel32.exe	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe
File opened for modification	C:\Windows\win32.exe	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

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

System Information Discovery
T1082
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

description pid process

Token: SeIncBasePriorityPrivilege 400 721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

description	pid	process
Token: SeIncBasePriorityPrivilege	400	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe

description	pid	process	target process
PID 400 wrote to memory of 4552	400	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe	cmd.exe
PID 400 wrote to memory of 4552	400	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe	cmd.exe
PID 400 wrote to memory of 4552	400	721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe
"C:\Users\Admin\AppData\Local\Temp\721a31f1dfb5a884ef537a6ab7f28d34e9e065249691df11a2f82bcb0f720665.exe"
1⤵
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:400

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c del C:\Users\Admin\AppData\Local\Temp\721A31~1.EXE > nul
2⤵
PID:4552

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/400-132-0x00000000003E0000-0x000000000040B000-memory.dmp

Filesize
172KB

Download
memory/400-134-0x00000000003E0000-0x000000000040B000-memory.dmp

Filesize
172KB

Download
memory/4552-133-0x0000000000000000-mapping.dmp

Download