e70ccb4a2cbc12f4ca8a3031bb5511e15c8fcde3ac5d9cd133a212ff02622195

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
27-04-2024 18:27

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General

Target

2024-04-27_2419ca9af5e8c90edb7924544b2cc7ba_cryptolocker.exe
Size

74KB
MD5

2419ca9af5e8c90edb7924544b2cc7ba
SHA1

bf52bf6f9129cc3fae94998494af58e291cb15da
SHA256

e70ccb4a2cbc12f4ca8a3031bb5511e15c8fcde3ac5d9cd133a212ff02622195
SHA512

a2df12a30facb7ca2e0f44f2d962f74d79c1e6714cca481581cb1a0df4f75b32d2ee8ebe71c2b1759ef675a5aa7da06d9236bfc57f6d04900df2fff0ee6b52d5
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsw:X6a+SOtEvwDpjBZYvQd2f

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b56-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b56-12.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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-27_2419ca9af5e8c90edb7924544b2cc7ba_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2032	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 2756 wrote to memory of 2032	2756	2024-04-27_2419ca9af5e8c90edb7924544b2cc7ba_cryptolocker.exe	85
PID 2756 wrote to memory of 2032	2756	2024-04-27_2419ca9af5e8c90edb7924544b2cc7ba_cryptolocker.exe	85
PID 2756 wrote to memory of 2032	2756	2024-04-27_2419ca9af5e8c90edb7924544b2cc7ba_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-27_2419ca9af5e8c90edb7924544b2cc7ba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_2419ca9af5e8c90edb7924544b2cc7ba_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2756
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2032

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
74KB

MD5
3128fc8be68d7f376ce94d1e4488a378

SHA1
e55471182a067b64cd09f7bf4196e1585809ea2b

SHA256
dd65ca0668374997d1bfe626bed37a0807642a40a764e2e268673e6e84eb35f7

SHA512
dcee8c327a5274848d7b524555f4b1b26facfe8f36ba52cd6351243e3a0d1363faa8077aa81d55589126f5f5f1d8cd5b6ee9ce1172413e353e98c67eb001f468

Download Submit
memory/2032-17-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/2032-23-0x0000000000840000-0x0000000000846000-memory.dmp

Filesize
24KB

Download
memory/2756-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2756-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2756-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download