071165a2122c9b03ee606c7e72dcb6e6f0632a1ff2a6fd6ed3493fd0ce7a85fc

Analysis

max time kernel
146s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 12:38

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General

Target

2024-04-19_699a61ce52dfd297f0d6de546e3a3d38_cryptolocker.exe
Size

67KB
MD5

699a61ce52dfd297f0d6de546e3a3d38
SHA1

194a1cd9d4f485e0e431bd14fd131fa5f1f1abaf
SHA256

071165a2122c9b03ee606c7e72dcb6e6f0632a1ff2a6fd6ed3493fd0ce7a85fc
SHA512

f16167522156fa28cde50ebefacfae110701987ba71f89fefa3da6cbfad82eeaa88c1b5b53d37462876e3b342d30ab7260f7e60838a23da33c9a5fd7eed13115
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUNsYD/6:i5nkFGMOtEvwDpjNbwQEI8UZDC

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/3252-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000d000000021dd1-13.dat	CryptoLocker_rule2
behavioral2/memory/3252-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4944-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/3252-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4944-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/3252-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000d000000021dd1-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/3252-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4944-26-0x0000000000500000-0x000000000050F000-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-1-5-21-3198953144-1466794930-246379610-1000\Control Panel\International\Geo\Nation	2024-04-19_699a61ce52dfd297f0d6de546e3a3d38_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4944	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 3252 wrote to memory of 4944	3252	2024-04-19_699a61ce52dfd297f0d6de546e3a3d38_cryptolocker.exe	85
PID 3252 wrote to memory of 4944	3252	2024-04-19_699a61ce52dfd297f0d6de546e3a3d38_cryptolocker.exe	85
PID 3252 wrote to memory of 4944	3252	2024-04-19_699a61ce52dfd297f0d6de546e3a3d38_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-19_699a61ce52dfd297f0d6de546e3a3d38_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_699a61ce52dfd297f0d6de546e3a3d38_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3252
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4944

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\misid.exe

Filesize
67KB

MD5
aba3634f5a1f266cd2741ad4ab174cf4

SHA1
15a8bef2bc6f4f9d90c7e9d86e7cc8256c988b4b

SHA256
16490404c2055293573edae2fddbb1659dfccbef8b33c692b617409aed385aba

SHA512
0a60346019e70ab5290ccc6ecacc5b81821ee60f25dd6d1f03d898469b7f17a45d55e2f7bbb65e7d59aab80cb8c17631352d2f3c07cf87177903fc791a2e921b

Download Submit
memory/3252-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3252-2-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3252-1-0x0000000000560000-0x0000000000566000-memory.dmp

Filesize
24KB

Download
memory/3252-3-0x00000000020E0000-0x00000000020E6000-memory.dmp

Filesize
24KB

Download
memory/3252-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4944-19-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/4944-20-0x0000000000730000-0x0000000000736000-memory.dmp

Filesize
24KB

Download
memory/4944-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download