c6c9b61924c93f084479bcd3f7e80f474cfe6aa57b3572905ea1fcaa6e6487a6

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
05/06/2024, 04:53

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General

Target

2024-06-05_e3b7b10a9b26d844e6a2078269bbd3d9_cryptolocker.exe
Size

37KB
MD5

e3b7b10a9b26d844e6a2078269bbd3d9
SHA1

54ddb2f1fe7b2de154288bac8b3ef4be6b38a040
SHA256

c6c9b61924c93f084479bcd3f7e80f474cfe6aa57b3572905ea1fcaa6e6487a6
SHA512

02c077b188d9f661aa92d557eaf10614b1d87bb1a838021b6e23a1792f331fcd457dac9761e557a3b2e2a33d575c59e60586aef8791256c8333cf87f6e636e58
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRSyz:btB9g/WItCSsAGjX7e9N0hunRvz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233f5-17.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	2024-06-05_e3b7b10a9b26d844e6a2078269bbd3d9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2300	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 4872 wrote to memory of 2300	4872	2024-06-05_e3b7b10a9b26d844e6a2078269bbd3d9_cryptolocker.exe	81
PID 4872 wrote to memory of 2300	4872	2024-06-05_e3b7b10a9b26d844e6a2078269bbd3d9_cryptolocker.exe	81
PID 4872 wrote to memory of 2300	4872	2024-06-05_e3b7b10a9b26d844e6a2078269bbd3d9_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-05_e3b7b10a9b26d844e6a2078269bbd3d9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-05_e3b7b10a9b26d844e6a2078269bbd3d9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4872
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:2300

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
d43fea8e24b76adfeeb4b26a4d51c412

SHA1
9b6c8ef1eea11e0777aff0f1185bc8fb3d598f5f

SHA256
a7fa76603eb9ac89a23183c31820bf0bee0c02f3255de952bd8d308f463794d5

SHA512
48ceba322881535a7d9a24770c71b5c084799fdcf387b31e8c50f1a49b47906c1fdc2aad2bfaf1f99fd73d326d7fa3c98f964c4198173f4e4236d2257bbba2cb

Download Submit
memory/2300-25-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4872-8-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/4872-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4872-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download