da10546d8b0d4140e09b1c5e4f665423436a7826d19a077250dad6a8769ed567

Analysis

max time kernel
89s
max time network
125s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-03-2024 03:44

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General

Target

2024-03-26_6c312f5047ee55b5366a89dae91a4ae3_cryptolocker.exe
Size

37KB
MD5

6c312f5047ee55b5366a89dae91a4ae3
SHA1

6156e83b66d17c1d4835888da1a13b12d11f9799
SHA256

da10546d8b0d4140e09b1c5e4f665423436a7826d19a077250dad6a8769ed567
SHA512

c7f44442a84f8f0a574b258948a53ef06dba35fed1f338a958d4f9456bd1d36cacf6d26150c70c3521fffbaa43c0d0bab1b983409a90efa772a4d5e9acd513ed
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2BodcAOjbQ36ttTa:btB9g/WItCSsAGjX7r3BGubmR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c00000002314f-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	gewos.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-26_6c312f5047ee55b5366a89dae91a4ae3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2804	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 4116 wrote to memory of 2804	4116	2024-03-26_6c312f5047ee55b5366a89dae91a4ae3_cryptolocker.exe	85
PID 4116 wrote to memory of 2804	4116	2024-03-26_6c312f5047ee55b5366a89dae91a4ae3_cryptolocker.exe	85
PID 4116 wrote to memory of 2804	4116	2024-03-26_6c312f5047ee55b5366a89dae91a4ae3_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-03-26_6c312f5047ee55b5366a89dae91a4ae3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_6c312f5047ee55b5366a89dae91a4ae3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4116
- 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:2804

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
37KB

MD5
8c25a863998453306342a34ddc159bc4

SHA1
7714c151c493bbb5c719702ee9225274e05d7497

SHA256
7ff87bdc51c62107a8b8700af46ed5e55e8ecc80c16e3d6a068ff3b27797a324

SHA512
a6c5fedd6474bd8e1d48cfe56712199fa14a50e10808eb9c33fa1dcf66e4d445977e2be9f757a5ab89a3a5a01adedbbec73e2f42820d321902525cba63e19f0c

Download Submit
memory/2804-21-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/4116-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4116-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4116-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download