5a27ef1b7387af087a7d66adc012ca649706fa858ff6aec2fed962d1fe39ffff

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 08:03

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General

Target

2024-02-20_6cb04e6e268da64f8500c0144b9ea164_cryptolocker.exe
Size

44KB
MD5

6cb04e6e268da64f8500c0144b9ea164
SHA1

26a39df35cf86bae264e282b8c58d2a5cfd717c6
SHA256

5a27ef1b7387af087a7d66adc012ca649706fa858ff6aec2fed962d1fe39ffff
SHA512

eae3282eb8f3f8158869a4b71d15c2583be17668ad62a3c7606dcf7329d87ec05e123ee93fe460d839096208124656077e881aa043834ec4dcdb1ac541aed5cb
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphedg:bc/y2lkF0+Bef

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023175-12.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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-02-20_6cb04e6e268da64f8500c0144b9ea164_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4924	rewok.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 4776 wrote to memory of 4924	4776	2024-02-20_6cb04e6e268da64f8500c0144b9ea164_cryptolocker.exe	85
PID 4776 wrote to memory of 4924	4776	2024-02-20_6cb04e6e268da64f8500c0144b9ea164_cryptolocker.exe	85
PID 4776 wrote to memory of 4924	4776	2024-02-20_6cb04e6e268da64f8500c0144b9ea164_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-20_6cb04e6e268da64f8500c0144b9ea164_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_6cb04e6e268da64f8500c0144b9ea164_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4776
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4924

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\rewok.exe

Filesize
44KB

MD5
7f5f0f8a2a97acb5e44c5d8db5f234e1

SHA1
bc2da27f0e54cf79fcb112771c768d27aef5cd27

SHA256
c32e3152f6cf462bfa75c50809353365532815a53fc9732356599401dcb1a528

SHA512
3019048d02143bc4f59c0dd0e9913658e2c4778faefede73a18c8aee0a85e16f5502d18b7ece85fdf24d2d9ad4b9f5e6c16cc058899cb03bb2807ab5c8d5f427

Download Submit
memory/4776-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4776-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/4776-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4924-25-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download