dd051cb48a59143da834d8a5316c79f425320fc44eca0c194bfa5250fa9cdc89

Analysis

max time kernel
149s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01/06/2024, 08:07

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General

Target

2024-06-01_c312e187df9305ee5bd2d6a816679124_cryptolocker.exe
Size

40KB
MD5

c312e187df9305ee5bd2d6a816679124
SHA1

dad398b7c8136668d7a5e1bb2db2547976208f25
SHA256

dd051cb48a59143da834d8a5316c79f425320fc44eca0c194bfa5250fa9cdc89
SHA512

bf071f43cd23cfbd8f68abbe3de8146c17ebd8c04485cde0f11c07f39a7556f4f20d969d1262ea27b84c2ebc5fba7bb4ed035bb61bd44a1b5277812b0326666a
SSDEEP

768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYo:qDdFJy3QMOtEvwDpjjWMl7TV

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/4864-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000800000002328e-13.dat	CryptoLocker_rule2
behavioral2/memory/4864-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/4864-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000800000002328e-13.dat	CryptoLocker_set1
behavioral2/memory/4864-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral2/memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/4864-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/files/0x000800000002328e-13.dat	UPX
behavioral2/memory/4864-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral2/memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-06-01_c312e187df9305ee5bd2d6a816679124_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1404	asih.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/4864-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/files/0x000800000002328e-13.dat	upx
behavioral2/memory/4864-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral2/memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp	upx

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 4864 wrote to memory of 1404	4864	2024-06-01_c312e187df9305ee5bd2d6a816679124_cryptolocker.exe	83
PID 4864 wrote to memory of 1404	4864	2024-06-01_c312e187df9305ee5bd2d6a816679124_cryptolocker.exe	83
PID 4864 wrote to memory of 1404	4864	2024-06-01_c312e187df9305ee5bd2d6a816679124_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-01_c312e187df9305ee5bd2d6a816679124_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_c312e187df9305ee5bd2d6a816679124_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1404

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\asih.exe

Filesize
40KB

MD5
4c51c7786cea4c84688d6044d8f27f09

SHA1
9a2dc43a92e0b48b38e449cd02f624cd9ff19436

SHA256
30584aa760f65f1a9df890bb8d7a0785b506cebae11f4f587e3ea71c52671484

SHA512
28be9c21d4ac11f8622c285a3517d0a2a1ecde24cc3e92cd64c8c50785e79e588cadbf204bd973208223ba133cfa90db3d65b0aaa3c9435c4b81b228bb69518b

Download Submit
memory/1404-19-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1404-25-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1404-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4864-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/4864-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4864-2-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/4864-3-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/4864-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download