e2e41269722810e8b0f2f66f5987e726077c781d83f11ba3e9edfd671d118d80

Analysis

max time kernel
150s
max time network
166s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
28/01/2024, 21:22

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General

Target

2024-01-28_02eab072ed063619c99325392e9dae2a_cryptolocker.exe
Size

38KB
MD5

02eab072ed063619c99325392e9dae2a
SHA1

f8d219b8abe3f127b8fc2548d21bbfe5f6a2dcb5
SHA256

e2e41269722810e8b0f2f66f5987e726077c781d83f11ba3e9edfd671d118d80
SHA512

980e3865bc69a6a5b175a8847ce6876e28d086e2d8ee53f603f98088ba06c7696a3526063720c8a4557c113eec32ac0a42097c84166fa225a2b1bf3f0acf8291
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxuQs6:b/yC4GyNM01GuQMNXw2PSjHPbSuYlM6

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000231f3-12.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-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation	2024-01-28_02eab072ed063619c99325392e9dae2a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3808	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 908 wrote to memory of 3808	908	2024-01-28_02eab072ed063619c99325392e9dae2a_cryptolocker.exe	84
PID 908 wrote to memory of 3808	908	2024-01-28_02eab072ed063619c99325392e9dae2a_cryptolocker.exe	84
PID 908 wrote to memory of 3808	908	2024-01-28_02eab072ed063619c99325392e9dae2a_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-01-28_02eab072ed063619c99325392e9dae2a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_02eab072ed063619c99325392e9dae2a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:908
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:3808

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
38KB

MD5
a8c19021c5f7658f2ba8e39fec03cd5b

SHA1
c498b84287ac3ec860f05d79b1b5aee0549b4c42

SHA256
7efadb578ba872aed0846f1c33e3f59cb11c9e6ef56b6bda2f08dd7df6c4f3f1

SHA512
954ff20c6bf4766f1e34aae88428c19c1ac8da4c7dca36c39013cadae6c1b0fc26672531bf49cce53ce93e4a8bbb826725bbf6de24227410b344c8d44747b664

Download Submit
memory/908-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/908-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/908-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3808-20-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download