33e9d8a7b9fe4fc3072e13e89438f95decb90d9eb458a7d13f2b48e1f1536323

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 14:35

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General

Target

2024-02-20_497f5fb29cec2da8bec29dafb65da883_cryptolocker.exe
Size

64KB
MD5

497f5fb29cec2da8bec29dafb65da883
SHA1

09911fc2a94f14fbf9db6f5a3c426ece4ced8eec
SHA256

33e9d8a7b9fe4fc3072e13e89438f95decb90d9eb458a7d13f2b48e1f1536323
SHA512

ed52d9d3ef2378b00f6b6f8ee03f69b035cd729f488bc00478c341fc27495aa0fc6ae41601ead470eb003a61efa57eed61000932c4a4b87a7ac3cb1caaa62e35
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUIX:i5nkFGMOtEvwDpjNbwQEI8UO

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1620-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000700000002321e-13.dat	CryptoLocker_rule2
behavioral2/memory/1620-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2384-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1620-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2384-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1620-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000700000002321e-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1620-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2384-26-0x0000000000500000-0x000000000050F000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-20_497f5fb29cec2da8bec29dafb65da883_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2384	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 1620 wrote to memory of 2384	1620	2024-02-20_497f5fb29cec2da8bec29dafb65da883_cryptolocker.exe	85
PID 1620 wrote to memory of 2384	1620	2024-02-20_497f5fb29cec2da8bec29dafb65da883_cryptolocker.exe	85
PID 1620 wrote to memory of 2384	1620	2024-02-20_497f5fb29cec2da8bec29dafb65da883_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-20_497f5fb29cec2da8bec29dafb65da883_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_497f5fb29cec2da8bec29dafb65da883_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2384

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
64KB

MD5
35374aca902205d78eb038ed2ea35223

SHA1
20b53317fff4b93a3d5c1eee516d2b1b7b9faf3a

SHA256
8deb3e85e881f1c91e78c0b0c5e55eb3057862afe128fd7ea871f744443838dc

SHA512
f0b0c9eb8d1d9e1f4d1687c0407fc02e408449d810bae7f473bbf30cca818132e8393b451ed94d451ffe65425b5f3159d87a83afaa8c56843357ab898707ca8c

Download Submit
memory/1620-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1620-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/1620-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/1620-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/1620-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2384-19-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/2384-25-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/2384-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download