2766813a90c1d74cf0b008c103a44111bf49544549c88ba613d09c18f7937d5d

Analysis

max time kernel
79s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 23:33

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General

Target

2024-01-18_f2998e92997201f3ce380ee140bda3ee_cryptolocker.exe
Size

38KB
MD5

f2998e92997201f3ce380ee140bda3ee
SHA1

97773fee6bc70518222693f56de5d847238f3dc8
SHA256

2766813a90c1d74cf0b008c103a44111bf49544549c88ba613d09c18f7937d5d
SHA512

6f0fec693412b93da77eb36334a56f26e5faba880d1de8605d626ac866a902b917296cfadf36b595d999dea1d8256d87806c2f6c02d410fe72dad1e66ff8654b
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAk:b/pYayGig5HjS3NPAk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023236-12.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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-01-18_f2998e92997201f3ce380ee140bda3ee_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4160	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 2296 wrote to memory of 4160	2296	2024-01-18_f2998e92997201f3ce380ee140bda3ee_cryptolocker.exe	91
PID 2296 wrote to memory of 4160	2296	2024-01-18_f2998e92997201f3ce380ee140bda3ee_cryptolocker.exe	91
PID 2296 wrote to memory of 4160	2296	2024-01-18_f2998e92997201f3ce380ee140bda3ee_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-01-18_f2998e92997201f3ce380ee140bda3ee_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_f2998e92997201f3ce380ee140bda3ee_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4160

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
39KB

MD5
59b735fc0601f2585c25960c9eca2e21

SHA1
6d30d2e2eea1b016133105146a4e80abcd2a9cc1

SHA256
9d8e331e3fa6cd4088a7908b6bc0b821465c8da53bedf81f9f0d285b529e48c9

SHA512
b68e37d84c4463b0699003bf130a0f60f08e6d422fc3e37a2ced1dff017ff1d2102799d2015cf78ee8736d88f32ebdfe175bb298c49fff9c7bacd0e01075070c

Download Submit
memory/2296-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2296-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/2296-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4160-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download