b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2022 15:50

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General

Target

b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe
Size

86KB
MD5

486350a25af411ac10d3ed6ff36310b0
SHA1

fa486916634919089786018a1e968be09c001fb1
SHA256

b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa
SHA512

e7b96abc991a18ae22e11cd5fdc64a4e95ecfb91027347bf6b709222271e165288082b75905ce41745e92d9489acd3ef3923e9bda0590954c0efca07e817790e
SSDEEP

768:K6wKiqe569LNZQcEbDxH1Ar/kUBlefkjv7yCjeLxyH6Pq5wIEQOx7EhuSwj/Z/0S:K6wVcLNe/ViMclCNCjeeoq5EQOHr9x

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:

b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe

Maps connected drives based on registry 3 TTPs 2 IoCs

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

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

Processes:

b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe

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

System Information Discovery
T1082
Enumerates processes with tasklist 1 TTPs 1 IoCs

Process Discovery
T1057

Processes:

tasklist.exe

pid process

2556 tasklist.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

tasklist.exe

description pid process

Token: SeDebugPrivilege 2556 tasklist.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe

pid process

676 b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe

pid	process
2556	tasklist.exe

description	pid	process
Token: SeDebugPrivilege	2556	tasklist.exe

pid	process
676	b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.execmd.exe

description	pid	process	target process
PID 676 wrote to memory of 5060	676	b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe	cmd.exe
PID 676 wrote to memory of 5060	676	b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe	cmd.exe
PID 676 wrote to memory of 5060	676	b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe	cmd.exe
PID 5060 wrote to memory of 2556	5060	cmd.exe	tasklist.exe
PID 5060 wrote to memory of 2556	5060	cmd.exe	tasklist.exe
PID 5060 wrote to memory of 2556	5060	cmd.exe	tasklist.exe

C:\Users\Admin\AppData\Local\Temp\b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe
"C:\Users\Admin\AppData\Local\Temp\b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe"
1⤵
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:676

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c tasklist&&del b3b844d7458fa6608ee2c89e8cef9752bcae65be7e83d1656c945355892b61aa.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:5060

C:\Windows\SysWOW64\tasklist.exe
tasklist
3⤵
- Enumerates processes with tasklist
- Suspicious use of AdjustPrivilegeToken
PID:2556

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

Peripheral Device Discovery

T1120

Process Discovery

T1057

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/2556-135-0x0000000000000000-mapping.dmp

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memory/5060-134-0x0000000000000000-mapping.dmp

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