262fe3fe546ab4321c8660bde7da9c1811f801b7cbfb41db74672dfda1afdebd

Analysis

max time kernel
146s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28/03/2024, 09:44

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General

Target

2024-03-28_7b73b71d70ab81fee787bb709eccec9f_cryptolocker.exe
Size

58KB
MD5

7b73b71d70ab81fee787bb709eccec9f
SHA1

6bf0e531fa8ebcc12fc4951885598e4ed4ea1d4a
SHA256

262fe3fe546ab4321c8660bde7da9c1811f801b7cbfb41db74672dfda1afdebd
SHA512

dc197714c39b227ae8009de5ba84639aded2c6b8a9b49a5bc14583f2bee6ec18a40c97232eb2c08257355837ab7d1da27c81b1e655f7902964f2ee9a89fdca47
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHTf:btng54SMLr+/AO/kIhfoKMHdu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023213-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 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-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	2024-03-28_7b73b71d70ab81fee787bb709eccec9f_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-557049126-2506969350-2798870634-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4624	gewos.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 2708 wrote to memory of 4624	2708	2024-03-28_7b73b71d70ab81fee787bb709eccec9f_cryptolocker.exe	87
PID 2708 wrote to memory of 4624	2708	2024-03-28_7b73b71d70ab81fee787bb709eccec9f_cryptolocker.exe	87
PID 2708 wrote to memory of 4624	2708	2024-03-28_7b73b71d70ab81fee787bb709eccec9f_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-28_7b73b71d70ab81fee787bb709eccec9f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_7b73b71d70ab81fee787bb709eccec9f_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2708
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:4624

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
58KB

MD5
e4571e950ba235132ca6fb375089950e

SHA1
ace970860902bef13c2e5b99ac1a9e7a4ac66c76

SHA256
7adb7e73b02ac9f2f4830420464d20f407ce70c8ac7a1d32a3eb619eb7ef5e5c

SHA512
10003f59d27d25362ca0a74e53dd5b212cb1efbfb69df37c9baf1c9a1ca0aa04190665c6579b0b312103a3ab7bdaa55baf202b6f0ffb4cf1f8ca9b00940e394c

Download Submit
memory/2708-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/2708-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/2708-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4624-20-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download