40957064367f36cdb50d807f12d02fa95ab9a3f00614ecc77498e70276476154

Analysis

max time kernel
149s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10-04-2024 05:47

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General

Target

2024-04-10_d75c2e9c982ade70e54908c4f0de8f59_cryptolocker.exe
Size

37KB
MD5

d75c2e9c982ade70e54908c4f0de8f59
SHA1

56106f58a92d49884417c9ac9781e90f6f77bfa7
SHA256

40957064367f36cdb50d807f12d02fa95ab9a3f00614ecc77498e70276476154
SHA512

1d9fda3d8f6e01290b3a2e0b05e4ca337d5209ad12e7a00885e6c1410dbc31ef974645c1b091450d27b2795fcfefd07363468a6eabcf285e9aad893255e8decd
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2BodcAOjbQ36ttTl:btB9g/WItCSsAGjX7r3BGubmv+

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0011000000023134-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-04-10_d75c2e9c982ade70e54908c4f0de8f59_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4396	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 4888 wrote to memory of 4396	4888	2024-04-10_d75c2e9c982ade70e54908c4f0de8f59_cryptolocker.exe	87
PID 4888 wrote to memory of 4396	4888	2024-04-10_d75c2e9c982ade70e54908c4f0de8f59_cryptolocker.exe	87
PID 4888 wrote to memory of 4396	4888	2024-04-10_d75c2e9c982ade70e54908c4f0de8f59_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-10_d75c2e9c982ade70e54908c4f0de8f59_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_d75c2e9c982ade70e54908c4f0de8f59_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4888
- 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:4396

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
37KB

MD5
1bd1519f862ade9297eaf0ec2ea25466

SHA1
4cb5f689ac2b5cea7ca630065eff053553f751d0

SHA256
9ce12c4d1094a71ff5b6a38d95885c6fdc0aa80913f12e71557711f25c63d48a

SHA512
17bc3fe56dc369edfe268c9a4d8964f23ac227da52ea773413e0aec3e935b8ce162cd8cdab50f54d12297ad5e31c600f0ea9c40f723a111fd03af4e8817eca86

Download Submit
memory/4396-25-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/4888-0-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/4888-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/4888-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download