2d5b41d50324683683d2837e6cca249fc10299ef1bc1e9a2a067feff8107d500

Analysis

max time kernel
148s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09/09/2024, 10:41

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General

Target

2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe
Size

37KB
MD5

faf8e7d86157ecd867d558fc497a46bc
SHA1

5dfef99ea06c4cae67d93069605ccd4f7f6d9fef
SHA256

2d5b41d50324683683d2837e6cca249fc10299ef1bc1e9a2a067feff8107d500
SHA512

41f43f7bd391e326def85fcd3e1b8ceb66e026bb356967f340bc6f084c93383c1b5a572f1b951c69d593e66413f32a5e4f619c2e73aea099f15f1511cb36bc92
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMC:bc/y2lkF0+Bl

Score

7^/10

discovery

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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation	2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4796	rewok.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rewok.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4544 wrote to memory of 4796	4544	2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe	86
PID 4544 wrote to memory of 4796	4544	2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe	86
PID 4544 wrote to memory of 4796	4544	2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-09_faf8e7d86157ecd867d558fc497a46bc_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4544
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:4796

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
37KB

MD5
0b55c93064bf4159cc0054fca93cc8b7

SHA1
80be21a3f691eb56824b5a9b8b584140e08891ef

SHA256
bbb4a810275d544e39869e4eeb2fd3f20153898bc7e66c23ea19915f47c2239f

SHA512
e5a658f6b88ac1f99329c91a42b276fee6a20adeddb8591a778e0d2bdba8e3da6002a343a2196dd2248c3e39ea3b18a5382e6ec4bcd902ac2edffa43fbe0fc13

Download Submit
memory/4544-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4544-1-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/4544-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download