03a77acdd6f0cd598666d61f69f25abeb7e1b69f95abca06c7dac4ee868fd75e

Analysis

max time kernel
7s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
24/04/2024, 19:40

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General

Target

2024-04-24_7340919c28d7420a5a4ed1854598192c_cryptolocker.exe
Size

42KB
MD5

7340919c28d7420a5a4ed1854598192c
SHA1

24e0b88ae6d0fff7199a0d28feda9dab7ecc95af
SHA256

03a77acdd6f0cd598666d61f69f25abeb7e1b69f95abca06c7dac4ee868fd75e
SHA512

032b98c765a67cbeef41f7c474ef3c1f48a7dae4deaad24a9c783e644d97d832279dfab9a20936ee42b96e6eea54765cfc3a5ce9e19192b1505def8d6ab7b248
SSDEEP

768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/CtXabMS:6j+1NMOtEvwDpjrR2XabMS

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4764-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000900000002325f-13.dat	CryptoLocker_rule2
behavioral2/memory/4764-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4764-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000900000002325f-13.dat	CryptoLocker_set1
behavioral2/memory/4764-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 3 IoCs

resource	yara_rule
behavioral2/memory/4764-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000900000002325f-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4764-17-0x0000000000500000-0x000000000050F000-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-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	2024-04-24_7340919c28d7420a5a4ed1854598192c_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4876	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 4764 wrote to memory of 4876	4764	2024-04-24_7340919c28d7420a5a4ed1854598192c_cryptolocker.exe	91
PID 4764 wrote to memory of 4876	4764	2024-04-24_7340919c28d7420a5a4ed1854598192c_cryptolocker.exe	91
PID 4764 wrote to memory of 4876	4764	2024-04-24_7340919c28d7420a5a4ed1854598192c_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-04-24_7340919c28d7420a5a4ed1854598192c_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_7340919c28d7420a5a4ed1854598192c_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:4876

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
42KB

MD5
0c3262c8db04e574b55cfe17bc20a30e

SHA1
932157a7d41e4c9127e16000b0ea2c0436c75174

SHA256
8a174b38fa2d4590d69eb158e878f0a5c73c6bdc39e137dd84faf177d90952b5

SHA512
d7c5d843023c0fe03ad912bfc3491aa8ab27de9636d2595e1da1c2ff8592f28ee9d38115044cedb2f3f0348e6c925467ffe6c64b68fc371e09ff8cd49babce14

Download Submit
memory/4764-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4764-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4764-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4764-3-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4764-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download