27920cb2680d5082d7538de3f47f902abd0a525c7e62e54220aec5c945984f67

Analysis

max time kernel
148s
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
07-03-2024 00:47

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General

Target

2024-03-07_5e98b3705356690bcc45e313a9b3f64d_cryptolocker.exe
Size

94KB
MD5

5e98b3705356690bcc45e313a9b3f64d
SHA1

6f79229e7ab439eabb1f0bc38143674f7b6b22bf
SHA256

27920cb2680d5082d7538de3f47f902abd0a525c7e62e54220aec5c945984f67
SHA512

5401c9284434c38f1bc76c13505f7a80aff6a0e153f05d511014308d948465a8637ea26380cae93f5cd38d28a0df2592d0654ee05a4c59474aa49a07c33a905c
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJBQ8:xj+VGMOtEvwDpjubwQEIiVmke8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3684-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_rule2
behavioral2/memory/3684-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/2816-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/3684-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e9a0-13.dat	CryptoLocker_set1
behavioral2/memory/3684-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/2816-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3684-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000300000001e9a0-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3684-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/2816-26-0x0000000000500000-0x0000000000510000-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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-07_5e98b3705356690bcc45e313a9b3f64d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2816	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 3684 wrote to memory of 2816	3684	2024-03-07_5e98b3705356690bcc45e313a9b3f64d_cryptolocker.exe	88
PID 3684 wrote to memory of 2816	3684	2024-03-07_5e98b3705356690bcc45e313a9b3f64d_cryptolocker.exe	88
PID 3684 wrote to memory of 2816	3684	2024-03-07_5e98b3705356690bcc45e313a9b3f64d_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-07_5e98b3705356690bcc45e313a9b3f64d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_5e98b3705356690bcc45e313a9b3f64d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3684
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2816

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
94KB

MD5
7525daeb6e004f62cf63e9f7aed57ad5

SHA1
a710ed4e99d6211836210d4f730df42d01ffc954

SHA256
6b1a5cb8041be408174b14aa99e9e8f030703eef13b1b625ef507905121ce7fd

SHA512
76938f85eb5b09362cfb29e1c8e5994b91055bc14febe6fe5342dd320475dc33b16bb9e89318fc0e973ff79cb46141434d740e75ce58f6e946f8bd2d5cf7df9c

Download Submit
memory/2816-19-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/2816-25-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2816-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3684-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3684-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3684-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3684-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/3684-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download