8ebf5883421431e52676655efb36e2cfe72dbc94fb6c914822aed31bcbb2dde2

Analysis

max time kernel
146s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 16:29

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General

Target

2024-04-09_34bc08eceeab7fed032f5dacc9a90fbc_cryptolocker.exe
Size

38KB
MD5

34bc08eceeab7fed032f5dacc9a90fbc
SHA1

6b124e546aae2a1c5b5b69eb83c6de276103e9da
SHA256

8ebf5883421431e52676655efb36e2cfe72dbc94fb6c914822aed31bcbb2dde2
SHA512

a928e6da6c11417973b4bf094d2adf5030bdfec8f3b4988e0363315053ab17516d78c8684214fc628591907b03e88ef6a685e7143ade42377558090d7cb6029c
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/E2:btB9g/WItCSsAGjX7e9N0hunKLYJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f000000023124-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-04-09_34bc08eceeab7fed032f5dacc9a90fbc_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2920	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 3420 wrote to memory of 2920	3420	2024-04-09_34bc08eceeab7fed032f5dacc9a90fbc_cryptolocker.exe	85
PID 3420 wrote to memory of 2920	3420	2024-04-09_34bc08eceeab7fed032f5dacc9a90fbc_cryptolocker.exe	85
PID 3420 wrote to memory of 2920	3420	2024-04-09_34bc08eceeab7fed032f5dacc9a90fbc_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-09_34bc08eceeab7fed032f5dacc9a90fbc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_34bc08eceeab7fed032f5dacc9a90fbc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3420
- 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:2920

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

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Downloads

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

Filesize
39KB

MD5
bb54b085295059c7a31ea53fb88a2633

SHA1
a545c13bbfbaf6ecb7271d61ace083a06849fe86

SHA256
5d78202cc16dc8f34072578006aa1c456b655a6059944a9b82ec4a76a10d2917

SHA512
39f0cc1a2a096e7d68b7f1ea7ef7d41f1744acfd7eef6c0d42026bfb44b34996e092b763cc8812218d51a4fe3fb4991239ae2b50a90556bb397d4cd453915a6b

Download Submit
memory/2920-25-0x00000000006F0000-0x00000000006F6000-memory.dmp

Filesize
24KB

Download
memory/3420-0-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/3420-1-0x00000000022D0000-0x00000000022D6000-memory.dmp

Filesize
24KB

Download
memory/3420-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download