d3b3c461fc83d6ddf044ce16c579e7f98a978b3a8e22ea5882bf789bcfc31269

Analysis

max time kernel
93s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13-05-2024 15:52

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General

Target

2024-05-13_702434aebe2c32471bcdc7ed1ec4e1d6_cryptolocker.exe
Size

64KB
MD5

702434aebe2c32471bcdc7ed1ec4e1d6
SHA1

8b4451756fb17f60ee2a82af343747a9b3d8ee3a
SHA256

d3b3c461fc83d6ddf044ce16c579e7f98a978b3a8e22ea5882bf789bcfc31269
SHA512

fd06f3a21d4d9c1b8cf253df8e5829661513e6c5821fabf1e756dba13c904ab9816375174898435a97fbb677df11ac81df72b46f3cd90ec98d62d75bf2d0965d
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHaxzh:btng54SMLr+/AO/kIhfoKMHdP9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000022f51-12.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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	2024-05-13_702434aebe2c32471bcdc7ed1ec4e1d6_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
532	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 4520 wrote to memory of 532	4520	2024-05-13_702434aebe2c32471bcdc7ed1ec4e1d6_cryptolocker.exe	82
PID 4520 wrote to memory of 532	4520	2024-05-13_702434aebe2c32471bcdc7ed1ec4e1d6_cryptolocker.exe	82
PID 4520 wrote to memory of 532	4520	2024-05-13_702434aebe2c32471bcdc7ed1ec4e1d6_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-13_702434aebe2c32471bcdc7ed1ec4e1d6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_702434aebe2c32471bcdc7ed1ec4e1d6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4520
- 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:532

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
64KB

MD5
6356b705a9ee611c0ead51e16e42743c

SHA1
7fbec5b1420f2004d3552061f8a4bea30dad2afe

SHA256
d6583912b3d4a9a2c1c6c4cf56424686e42b6d07413fbe09616fd422654e03a1

SHA512
17a305114c129f6015fa887b6462db8939ff881664794a25ea095d77ede09e7c9f9f23cf45efc988a07a3c1fea507dbb7fe4a7e488310a6925ab5b5c1bb8e268

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
9c250a38cfa831297400fcbfa47a90b3

SHA1
75ba1e2c9f9e43532197911cb1ce0dabba7d1cb8

SHA256
0d6608cc76eac64c7d3403b231d79156dceab8f7b4823ddf1677afee51b426ed

SHA512
7cba8ef65790228f45e69b2adfe82b9e10c2712c81e4c435682a3affd3049fcbb973ae731b8cc51bcd1e92a1921cf97a714cae9c14fc18814de12d5011b0e1a9

Download Submit
memory/4520-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4520-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4520-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download