efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81

Analysis

max time kernel
94s
max time network
125s
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 17:17

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General

Target

efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe
Size

20KB
MD5

43f060864e8357dfb5119efdfff65bb0
SHA1

7343a3b7e6cd0bb1e745ea5906cc08408c5a5926
SHA256

efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81
SHA512

c5b56c232ed9ef0c0b5782e32045c7f750f0cd32ee993b7c83774141d2a93dc2e9255d47834bdcc87681d6f1bb23964d784f83ab70787222c5e1b1ef866b1580
SSDEEP

384:GAdiizfZsDiM3PfsBhnRGjLbjnsJzmfmOAPaz1:GAd3f41ETKfm/PaR

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:

efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.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:

efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Disk\Enum	efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\disk\Enum\0	efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.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

4952 tasklist.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

tasklist.exe

description pid process

Token: SeDebugPrivilege 4952 tasklist.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe

pid process

3348 efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe

pid	process
4952	tasklist.exe

description	pid	process
Token: SeDebugPrivilege	4952	tasklist.exe

pid	process
3348	efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.execmd.exe

description	pid	process	target process
PID 3348 wrote to memory of 4992	3348	efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe	cmd.exe
PID 3348 wrote to memory of 4992	3348	efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe	cmd.exe
PID 3348 wrote to memory of 4992	3348	efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe	cmd.exe
PID 4992 wrote to memory of 4952	4992	cmd.exe	tasklist.exe
PID 4992 wrote to memory of 4952	4992	cmd.exe	tasklist.exe
PID 4992 wrote to memory of 4952	4992	cmd.exe	tasklist.exe

C:\Users\Admin\AppData\Local\Temp\efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe
"C:\Users\Admin\AppData\Local\Temp\efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe"
1⤵
- Checks computer location settings
- Maps connected drives based on registry
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3348

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c tasklist&&del efeffd6ecf186cc3b6d9b8687eadbd581f3e9fbffd447a0f4a02a07931698c81.exe
2⤵
- Suspicious use of WriteProcessMemory
PID:4992

C:\Windows\SysWOW64\tasklist.exe
tasklist
3⤵
- Enumerates processes with tasklist
- Suspicious use of AdjustPrivilegeToken
PID:4952

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Peripheral Device Discovery

T1120

Process Discovery

T1057

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/4952-135-0x0000000000000000-mapping.dmp

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memory/4992-134-0x0000000000000000-mapping.dmp

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