b6cf5375b58ae154cb03750c6a9bfa6a16c21167f042c034192df25f180ed99d

Analysis

max time kernel
148s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
25/02/2024, 01:34

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General

Target

2024-02-25_9e1151507dcc842418d9c781734872bf_cryptolocker.exe
Size

54KB
MD5

9e1151507dcc842418d9c781734872bf
SHA1

a916164d6d58a06b6a3cbdbee7a17ddfb9159291
SHA256

b6cf5375b58ae154cb03750c6a9bfa6a16c21167f042c034192df25f180ed99d
SHA512

8e2727a56c1f1a7316fff891cadc1ae95962509fbe6ffd6d930baffd7c7d48b4b68aecc4b147292e518f6ecc55fedf8dd000f3811f1e257c613d8239e8235b15
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbP/MMaQ:xj+VGMOtEvwDpjubXMMaQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral2/memory/3388-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002325f-13.dat	CryptoLocker_rule2
behavioral2/memory/3388-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4256-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4256-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral2/memory/3388-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002325f-13.dat	CryptoLocker_set1
behavioral2/memory/3388-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4256-18-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4256-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 5 IoCs

resource	yara_rule
behavioral2/memory/3388-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000900000002325f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3388-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4256-18-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4256-27-0x0000000000500000-0x0000000000510000-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-1-5-21-910440534-423636034-2318342392-1000\Control Panel\International\Geo\Nation	2024-02-25_9e1151507dcc842418d9c781734872bf_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4256	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 3388 wrote to memory of 4256	3388	2024-02-25_9e1151507dcc842418d9c781734872bf_cryptolocker.exe	85
PID 3388 wrote to memory of 4256	3388	2024-02-25_9e1151507dcc842418d9c781734872bf_cryptolocker.exe	85
PID 3388 wrote to memory of 4256	3388	2024-02-25_9e1151507dcc842418d9c781734872bf_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-02-25_9e1151507dcc842418d9c781734872bf_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_9e1151507dcc842418d9c781734872bf_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3388
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4256

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
55KB

MD5
a065884691ba30520e9110dfdf7533e4

SHA1
989c310b9fff1a803eb4982b959a551165a2b7be

SHA256
4ad6e4d24502c0d2bbfcffa5c09854017ad79f0cdedeba68b6edd4ff1bc80316

SHA512
abe6d47af9baef00fa5a4e184864489b2f9d357dfca399facb59d5da3200180ea894878326cd7cb6435041b02c9b671b8362c64111e74baba8f183348299f0f4

Download Submit
memory/3388-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3388-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3388-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/3388-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/3388-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4256-18-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4256-20-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download
memory/4256-22-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4256-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download