c4aa62e23f629d85366a52594e87b70dfafaa1b599b61a73eac23dfe621d22e5

Analysis

max time kernel
156s
max time network
168s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
08-03-2024 05:55

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General

Target

2024-03-08_7b9509732ba8c981827c67f25dbc9441_cryptolocker.exe
Size

95KB
MD5

7b9509732ba8c981827c67f25dbc9441
SHA1

158da51d067286ba46c25f08e637dba9986ac346
SHA256

c4aa62e23f629d85366a52594e87b70dfafaa1b599b61a73eac23dfe621d22e5
SHA512

302dccf7ae1d3a91abc2e324d464d5fad676c34d96dbcb0008288ee0d5cc0db13e74d60993b2623d431fee7154be73eccad9d257e64b11608383d584348bbf22
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJ3YU:xj+VGMOtEvwDpjubwQEIiVmkv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4572-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002326b-13.dat	CryptoLocker_rule2
behavioral2/memory/4572-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/512-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4572-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002326b-13.dat	CryptoLocker_set1
behavioral2/memory/4572-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/512-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4572-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000800000002326b-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4572-25-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/512-26-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

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	2024-03-08_7b9509732ba8c981827c67f25dbc9441_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
512	misid.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 4572 wrote to memory of 512	4572	2024-03-08_7b9509732ba8c981827c67f25dbc9441_cryptolocker.exe	98
PID 4572 wrote to memory of 512	4572	2024-03-08_7b9509732ba8c981827c67f25dbc9441_cryptolocker.exe	98
PID 4572 wrote to memory of 512	4572	2024-03-08_7b9509732ba8c981827c67f25dbc9441_cryptolocker.exe	98

C:\Users\Admin\AppData\Local\Temp\2024-03-08_7b9509732ba8c981827c67f25dbc9441_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_7b9509732ba8c981827c67f25dbc9441_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4572
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:512

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:2324

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\misid.exe

Filesize
95KB

MD5
5e99720fa19ba245b74cf1a68dead9b2

SHA1
351dbdca92dfe377c2bf289f1f3fd6e1c43d324b

SHA256
7b10166f068548a0ca5434e84e126d1a2604b877112e53208fec8b004afaf74e

SHA512
c13f7cf66f98b397659c90738c8ac0c886c605bfb2d7c2efdbb6b9de7eba93e8cac124ce349006baf3445aa6e8d20904cce7f1a30e7c90b27336a6319ad8d702

Download Submit
memory/512-18-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/512-20-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/512-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4572-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4572-1-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/4572-2-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/4572-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4572-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download