288e800b2d6e82ef6db7fd8bee35c5e0c1e6e002a50efb31ed21ab8bce11a6eb

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
17-02-2024 20:45

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General

Target

2024-02-17_cf2deb4077b8442466c7c43918a82694_cryptolocker.exe
Size

85KB
MD5

cf2deb4077b8442466c7c43918a82694
SHA1

a955ea23e94d68920f813155ca7f6f3b9b461220
SHA256

288e800b2d6e82ef6db7fd8bee35c5e0c1e6e002a50efb31ed21ab8bce11a6eb
SHA512

a6c6c7fe7d87241f3cf4bb59d7a80f2a55085306f4431252b88a5a02d79c38e49c5c5f5194e0d8ced09239c1a1d8a61a80820901e38f70b09a417163a45bbf76
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvx5/x:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8R

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4004-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x00070000000231f4-13.dat	CryptoLocker_rule2
behavioral2/memory/4004-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/4740-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/4004-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/4740-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4004-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x00070000000231f4-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4004-17-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4740-26-0x0000000000500000-0x000000000050F000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation	2024-02-17_cf2deb4077b8442466c7c43918a82694_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4740	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 4004 wrote to memory of 4740	4004	2024-02-17_cf2deb4077b8442466c7c43918a82694_cryptolocker.exe	84
PID 4004 wrote to memory of 4740	4004	2024-02-17_cf2deb4077b8442466c7c43918a82694_cryptolocker.exe	84
PID 4004 wrote to memory of 4740	4004	2024-02-17_cf2deb4077b8442466c7c43918a82694_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-17_cf2deb4077b8442466c7c43918a82694_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-17_cf2deb4077b8442466c7c43918a82694_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4004
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4740

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
85KB

MD5
e88ad93bd69f738051c259ecf9742070

SHA1
fabc7a78cd989da006aca0d20fb60ab02a5b14bd

SHA256
88a9a69910d99adb8f67d12e0745cdce5ee130c2a8c0bb69f74cbbda2deee0e2

SHA512
f1be47b9f63ce31f55384ff99739084e583008b4bfc9d23221c622340792034a8c91ef92a9a06c295911c982a70debd2e53b289da2f43003fd979b121a970b41

Download Submit
memory/4004-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4004-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4004-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/4004-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4004-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4740-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/4740-23-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/4740-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download