610cd01e51e9ff15e4e4e8a9235c52ee3894afa9c26704282de596759329ae36

Analysis

max time kernel
97s
max time network
128s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 16:24

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General

Target

2024-04-08_36d3932a7e3a32d1cf64d4b2c0a21acf_cryptolocker.exe
Size

44KB
MD5

36d3932a7e3a32d1cf64d4b2c0a21acf
SHA1

03733d4a58404f34e717c560a354005d3f74e527
SHA256

610cd01e51e9ff15e4e4e8a9235c52ee3894afa9c26704282de596759329ae36
SHA512

7c8e92fe574f50e330cfa1b86b604e119c885ca9021925672e288352629f3798375d8ad452588575bca744ff2af27a412d4873a84b0c1fc7b492a6d679d04377
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHoc/QQJ1RD4i:btB9g/xtCSKfxLIc/bRDh

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002304c-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-08_36d3932a7e3a32d1cf64d4b2c0a21acf_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4708	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 2648 wrote to memory of 4708	2648	2024-04-08_36d3932a7e3a32d1cf64d4b2c0a21acf_cryptolocker.exe	87
PID 2648 wrote to memory of 4708	2648	2024-04-08_36d3932a7e3a32d1cf64d4b2c0a21acf_cryptolocker.exe	87
PID 2648 wrote to memory of 4708	2648	2024-04-08_36d3932a7e3a32d1cf64d4b2c0a21acf_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-08_36d3932a7e3a32d1cf64d4b2c0a21acf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-08_36d3932a7e3a32d1cf64d4b2c0a21acf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2648
- 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:4708

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
45KB

MD5
9f2a82c7fba6a2fd1c6650d348e964c4

SHA1
6c34316057c08140da53d0eb8f0a4a7f49ec8555

SHA256
723edebf00788e247887248c34f4a2662a025c7160a97dc9991792a689825c65

SHA512
84ded1cbce323aea5464f669aba8aabb6b89d4ec1d146cbea7ad32582e92c8055ea9229821866be591fc646b24ac751e63ee6c6aacdc822e166f33d2601897f2

Download Submit
memory/2648-0-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/2648-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2648-1-0x00000000022C0000-0x00000000022C6000-memory.dmp

Filesize
24KB

Download
memory/4708-20-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download