60f71dac266aac344b5e383345180522bbdff49a90469d1c945bb1eb913b2fba

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 07:32

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General

Target

2024-04-24_f783ef5c0e3585efff10a6590ca1cf79_cryptolocker.exe
Size

42KB
MD5

f783ef5c0e3585efff10a6590ca1cf79
SHA1

f7ed40c707b6d1e915bceaf9130465b249c589e8
SHA256

60f71dac266aac344b5e383345180522bbdff49a90469d1c945bb1eb913b2fba
SHA512

ed628b3f44f2932bb4e9b631961b94910ba2857dd1e998b6803d924efddec61edb03180e3f5adcf04f7a669b170871748aad8d7cba30d212aead25e3afc09dec
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAN:b/pYayGig5HjS3NPAN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000001db0e-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-1-5-21-1132431369-515282257-1998160155-1000\Control Panel\International\Geo\Nation	2024-04-24_f783ef5c0e3585efff10a6590ca1cf79_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2260	retln.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 716 wrote to memory of 2260	716	2024-04-24_f783ef5c0e3585efff10a6590ca1cf79_cryptolocker.exe	84
PID 716 wrote to memory of 2260	716	2024-04-24_f783ef5c0e3585efff10a6590ca1cf79_cryptolocker.exe	84
PID 716 wrote to memory of 2260	716	2024-04-24_f783ef5c0e3585efff10a6590ca1cf79_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-24_f783ef5c0e3585efff10a6590ca1cf79_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_f783ef5c0e3585efff10a6590ca1cf79_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:716
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:2260

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\retln.exe

Filesize
42KB

MD5
395e351ac0c2224f74f5af059006944d

SHA1
061743bc965c8b6a45099332557c55cfc6b17512

SHA256
9f1fd0f69d69e137fdab193d0d8e35a8774b41efbdb0ad600918570d00bccfd0

SHA512
595d8204ba82bf6b6e90ad73676d6a59c8695dd164ab9da309f6181c68330efffb2e233469cc129498efb699245f4aa5aa7b7158fc08a0e3a95ebff92e1c0dbd

Download Submit
memory/716-0-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/716-1-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/716-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2260-20-0x0000000000700000-0x0000000000706000-memory.dmp

Filesize
24KB

Download