56f0c52d2ea6064ac0a35e275bfb4f6349f3bc0d65ec8536191292436e1f0ed2

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 04:00

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General

Target

2024-04-10_e58279fcc8e9246456ac55d2627b1a49_cryptolocker.exe
Size

42KB
MD5

e58279fcc8e9246456ac55d2627b1a49
SHA1

e0d6ccbe4bb201dc548d9575c3f38209116d927a
SHA256

56f0c52d2ea6064ac0a35e275bfb4f6349f3bc0d65ec8536191292436e1f0ed2
SHA512

247d9fdc66b518bc9db3c894c95ff9c2301a6155c508c966749de256df65a96561169ebae87d86139df8ffcf59e2d8c1bc7862a64d6ceb876e0889c38f53474a
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphql:bc/y2lkF0+Beql

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00030000000227e7-12.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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-10_e58279fcc8e9246456ac55d2627b1a49_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4392	rewok.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 536 wrote to memory of 4392	536	2024-04-10_e58279fcc8e9246456ac55d2627b1a49_cryptolocker.exe	94
PID 536 wrote to memory of 4392	536	2024-04-10_e58279fcc8e9246456ac55d2627b1a49_cryptolocker.exe	94
PID 536 wrote to memory of 4392	536	2024-04-10_e58279fcc8e9246456ac55d2627b1a49_cryptolocker.exe	94

C:\Users\Admin\AppData\Local\Temp\2024-04-10_e58279fcc8e9246456ac55d2627b1a49_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_e58279fcc8e9246456ac55d2627b1a49_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:536
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  PID:4392

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3804 --field-trial-handle=2264,i,15001568551143786084,90255922961447677,262144 --variations-seed-version /prefetch:8
1⤵
PID:5012

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\rewok.exe

Filesize
42KB

MD5
875be7586537442160f55fd10dfffcf0

SHA1
c5b42e1721d57499eb932749eea4c79bb463b065

SHA256
126964668c20ec74dd29a2d3d4339df226c3d55f07a58da9a1791b29e95e1779

SHA512
71a29594ac33ac827d2d6b63492be1e800d79f2d1c06dbeaee01a12d00998edfd5171c47cbeb2ac4368d93e4ecacfe5bd9e429f9622e6319434af46bd75b8087

Download Submit
memory/536-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/536-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/536-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4392-20-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download