5997ba721b3977f9b2dc870d55282d1a7ffe99cf1c5611eca597126b5083323e

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
20/04/2024, 15:50

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General

Target

2024-04-20_e86b226625db1b3bc7df3bd544c118d7_cryptolocker.exe
Size

95KB
MD5

e86b226625db1b3bc7df3bd544c118d7
SHA1

78753795b1b32f049e307a1298cb8c753ab8004c
SHA256

5997ba721b3977f9b2dc870d55282d1a7ffe99cf1c5611eca597126b5083323e
SHA512

3820fae2e70071a5d618efb07b5f6c114fccfb06587fbb2a0090434546b0243c637ae5d7f6e89f0486c90af8576ed3fe888ea1dbcb2248d550bd2fb77e22de66
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp0l:V6a+pOtEvwDpjtzN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e97a-12.dat	CryptoLocker_set1

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	2024-04-20_e86b226625db1b3bc7df3bd544c118d7_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3300	asih.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 852 wrote to memory of 3300	852	2024-04-20_e86b226625db1b3bc7df3bd544c118d7_cryptolocker.exe	85
PID 852 wrote to memory of 3300	852	2024-04-20_e86b226625db1b3bc7df3bd544c118d7_cryptolocker.exe	85
PID 852 wrote to memory of 3300	852	2024-04-20_e86b226625db1b3bc7df3bd544c118d7_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-20_e86b226625db1b3bc7df3bd544c118d7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-20_e86b226625db1b3bc7df3bd544c118d7_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:852
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3300

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\asih.exe

Filesize
95KB

MD5
a5e53d5bd74217d6b4348f7de507de25

SHA1
cd3f4f1964857833e352ca69a432a9eb4adba25c

SHA256
7524b240169b0e496466f1cbd0a579a7d44befe49d625f147bdb1fb05720c6bb

SHA512
10e50851c816e8d2d3ba809d6f8710ca9f7c74d5b63123eee565a158898f95145e2e2a82bdd17734aeac4524999e445c971c5027e9696246392c9a7fe99dbc0f

Download Submit
memory/852-0-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/852-1-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/852-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/3300-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/3300-20-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download