e8e6e9ad2b7e0cc842b54090a1470809f9db022c8e23835f3e581a9c3f0ab952

Analysis

max time kernel
148s
max time network
157s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 23:33

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General

Target

2024-03-28_9778065d1d4ceca8fcbe70dcd8383f76_cryptolocker.exe
Size

97KB
MD5

9778065d1d4ceca8fcbe70dcd8383f76
SHA1

d0a495d095dc39fb74eb78326e058ad8747fa268
SHA256

e8e6e9ad2b7e0cc842b54090a1470809f9db022c8e23835f3e581a9c3f0ab952
SHA512

f8381c3b8b712d2ea2e2f3f41bffb37929f47581a423010b7a5e9bf9b195836d3e65678ee30b2051aca2ccdff9c77754769c3db4bcd29c3ec1242ff6e70351f8
SSDEEP

768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJvfT35g:xj+VGMOtEvwDpjubwQEIiVmkfa

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4288-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0008000000023214-13.dat	CryptoLocker_rule2
behavioral2/memory/4288-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1836-58-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4288-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0008000000023214-13.dat	CryptoLocker_set1
behavioral2/memory/4288-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1836-58-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4288-0-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0008000000023214-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4288-17-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1836-58-0x0000000000500000-0x0000000000510000-memory.dmp	INDICATOR_EXE_Packed_MPress

Checks computer location settings 2 TTPs 2 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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-03-28_9778065d1d4ceca8fcbe70dcd8383f76_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	misid.exe

Executes dropped EXE 1 IoCs

pid	Process
1836	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 4288 wrote to memory of 1836	4288	2024-03-28_9778065d1d4ceca8fcbe70dcd8383f76_cryptolocker.exe	87
PID 4288 wrote to memory of 1836	4288	2024-03-28_9778065d1d4ceca8fcbe70dcd8383f76_cryptolocker.exe	87
PID 4288 wrote to memory of 1836	4288	2024-03-28_9778065d1d4ceca8fcbe70dcd8383f76_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-28_9778065d1d4ceca8fcbe70dcd8383f76_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_9778065d1d4ceca8fcbe70dcd8383f76_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4288
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1836

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
97KB

MD5
abaf9cd92274f13212cf1ffc7957ba7e

SHA1
6ce6a725b0fd0740b0c4f64b483855d230a459d3

SHA256
77f72094bf44a4c75b5c74d4fcb9e0ec78d3718be36150fffb6f30ecceaa80c6

SHA512
655a04ba4dd8c76cc3636e39f05926249403cd2960ac45e94b8e65edbc667fab6aedd348ab2742e78327b5997c5c56798cf7b5952f4493eaae74ffb7cc156d99

Download Submit
memory/1836-19-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download
memory/1836-25-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1836-58-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4288-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4288-1-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4288-2-0x0000000002310000-0x0000000002316000-memory.dmp

Filesize
24KB

Download
memory/4288-3-0x00000000021A0000-0x00000000021A6000-memory.dmp

Filesize
24KB

Download
memory/4288-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download