e2ded5e38ec2524abd39ef07696ea67e3811ab11030fdb027fe761f8fe86f6b4

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22/04/2024, 13:08

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General

Target

2024-04-22_bbbeec93df3e78ac9b2730ac1d410a52_cryptolocker.exe
Size

36KB
MD5

bbbeec93df3e78ac9b2730ac1d410a52
SHA1

c59ed94a6b816fbaa8e891fc24ec26ac9152d449
SHA256

e2ded5e38ec2524abd39ef07696ea67e3811ab11030fdb027fe761f8fe86f6b4
SHA512

98d3fd4b4ff4b1a9006fe34bf08411940feaebb9471d1fba433c9c66a16401afdbcdd75210e14f8d233cca5615049358b95576de28cb8fbe38390970067eacfb
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHC02ltAUACw:b/pYayGig5HC02gbCw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000600000002326f-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-1-5-21-2288054676-1871194608-3559553667-1000\Control Panel\International\Geo\Nation	2024-04-22_bbbeec93df3e78ac9b2730ac1d410a52_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1208	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 4656 wrote to memory of 1208	4656	2024-04-22_bbbeec93df3e78ac9b2730ac1d410a52_cryptolocker.exe	87
PID 4656 wrote to memory of 1208	4656	2024-04-22_bbbeec93df3e78ac9b2730ac1d410a52_cryptolocker.exe	87
PID 4656 wrote to memory of 1208	4656	2024-04-22_bbbeec93df3e78ac9b2730ac1d410a52_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-22_bbbeec93df3e78ac9b2730ac1d410a52_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_bbbeec93df3e78ac9b2730ac1d410a52_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4656
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:1208

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
36KB

MD5
62c66c18ead76a677ae39773387fef81

SHA1
cc0d788c894befdc8dbc82295870c79993a40251

SHA256
724d4aadfed8c2f6a2b1a344b4712ce6aebf32673872b242db94653f65885177

SHA512
88e6b4d4a0596a3a03a8ca5bff93df655b96fbc1bf1d1d0d1ac18771e32597a589b542d84a0d27de53e69502a940e9dac5f850ba43f0c3bb43a184996067d0cb

Download Submit
memory/1208-19-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4656-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4656-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/4656-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download