c1dc972a7ce79be04cc93308489f0e1e20608bf4cbee40a0cdd075d8c9399c7e

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
13/06/2024, 06:26

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General

Target

2024-06-13_3b9f73c31b4046361e586a1898b5b593_cryptolocker.exe
Size

70KB
MD5

3b9f73c31b4046361e586a1898b5b593
SHA1

975d7cfe600ebb117179d7850aeab60566599356
SHA256

c1dc972a7ce79be04cc93308489f0e1e20608bf4cbee40a0cdd075d8c9399c7e
SHA512

a4b9aad6e8c0aba9e63f881baa4e00f140d7ed624fe9a80fdc6c6668b4a957f540607cf23531ca2b7acad7e3ee60eca40f48fa53cdb5fb5c0b8a5e0303c1adba
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/dZ:i5nkFGMOtEvwDpjNbwQEI8UZDj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023276-13.dat	CryptoLocker_rule2
behavioral2/memory/1168-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4268-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/1168-18-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4268-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x0007000000023276-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1168-18-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4268-26-0x0000000000500000-0x000000000050F000-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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-06-13_3b9f73c31b4046361e586a1898b5b593_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4268	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 1168 wrote to memory of 4268	1168	2024-06-13_3b9f73c31b4046361e586a1898b5b593_cryptolocker.exe	82
PID 1168 wrote to memory of 4268	1168	2024-06-13_3b9f73c31b4046361e586a1898b5b593_cryptolocker.exe	82
PID 1168 wrote to memory of 4268	1168	2024-06-13_3b9f73c31b4046361e586a1898b5b593_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-13_3b9f73c31b4046361e586a1898b5b593_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-13_3b9f73c31b4046361e586a1898b5b593_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1168
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4268

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
70KB

MD5
49d193a0dbddcdff10b9f1cbf70d3220

SHA1
899d8d9f52fe8edfbc119cea43e531a059b565d4

SHA256
f3986b4e95361a44977fd6a182a0c589084214e6c33eb87c9142f9307ba6bb43

SHA512
d0745e726cff87b4de2bc7dd1b9a5f085a460cfb5b0d4f9c09e2c94b8fbd9a3a00bae347ec1416b630a1e7a5fa25c44cac8fb2f8a12c8f3d2f41e564ad6e4b69

Download Submit
memory/1168-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1168-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1168-2-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1168-9-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1168-18-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4268-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download