fcba8cfb486c838536da27fd70d55fb9bb6f71ef3867c219d637ee233b6a1abc

Analysis

max time kernel
120s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 03:42

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe
Size

36KB
MD5

3f2a5034789c16c6822168654690a477
SHA1

4a97383a73917a74ac50ae6644b283c23f1440eb
SHA256

fcba8cfb486c838536da27fd70d55fb9bb6f71ef3867c219d637ee233b6a1abc
SHA512

95f06cff164de7ca9b6c428b342b61f66f1e86ba6ce9cd4dbf60132d6b35b3dcd4e6089388adb4b20cac394bb8cde94ae696e5f7cfb9a01c1903a1c8187a3850
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRCO:btB9g/WItCSsAGjX7e9N0hunRCO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f9-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4612	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 4932 wrote to memory of 4612	4932	2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe	85
PID 4932 wrote to memory of 4612	4932	2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe	85
PID 4932 wrote to memory of 4612	4932	2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_3f2a5034789c16c6822168654690a477_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4932
- 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:4612

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

Loading Replay Monitor...

Downloads

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

Filesize
36KB

MD5
a7d5fc3ab38c4f9b4c9e9fecb035d099

SHA1
09dd8940462cc8c6a8cdc4087690defa1fadcd1a

SHA256
846c340fde78a531c223090689d153fe610dcd45caabcd33aa0667c0a562ab15

SHA512
ecd318a9e52972cdec021849ecbdbdb45d9ccffc0f9866dcd79082082321bf13e5cb273490f56dcd90f80e1f1ece1747630380c70b4f838555aff79479033100

Download Submit
memory/4612-25-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/4932-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4932-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4932-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download