63dd44893caf0b2e9af3537ab130709ef48ffcfe32515b95991c31f2124f385f

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
24/02/2024, 22:22

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General

Target

2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe
Size

117KB
MD5

17b39258258bcf17e08b01ec09ebdfba
SHA1

3f1d3734520803e9b02de0b3f76a9442b64ee60b
SHA256

63dd44893caf0b2e9af3537ab130709ef48ffcfe32515b95991c31f2124f385f
SHA512

f3f826afedbdaa4d96a84a013869a559eb255a51cbefd9b3ea2603bbcbda2eaca7e3a747776a6185dcd6837113518eacca6642064acd86351b2ffb4bed3c2755
SSDEEP

1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01H:z6a+CdOOtEvwDpjczF

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000014ede-11.dat	CryptoLocker_rule2
behavioral1/memory/2536-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2612-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000a000000014ede-11.dat	CryptoLocker_set1
behavioral1/memory/2536-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2612-20-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000a000000014ede-11.dat	UPX
behavioral1/memory/2536-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2612-20-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2612	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2536	2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000a000000014ede-11.dat	upx
behavioral1/memory/2536-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2612-20-0x0000000000500000-0x0000000000510000-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 4 IoCs

description	pid	Process	procid_target
PID 2536 wrote to memory of 2612	2536	2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe	28
PID 2536 wrote to memory of 2612	2536	2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe	28
PID 2536 wrote to memory of 2612	2536	2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe	28
PID 2536 wrote to memory of 2612	2536	2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-24_17b39258258bcf17e08b01ec09ebdfba_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2536
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2612

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
117KB

MD5
b381efffc82f60ed245a8f6d548c24f1

SHA1
587f463e585964a6ca72087fe0145ea15aa55667

SHA256
fa552a26daa5ad7249165e6d104bb2b46ceba86322f28f8c2826d2db71fd91d1

SHA512
425550ca583bcd2577494f67359d0d6438b8515be6395a551baf1da75fbe7e86c911b119b60ae7222b2e011dd2fe299fe2ea53c795e6d2c862b73b702cf2b4e9

Download Submit
memory/2536-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2536-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2536-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2536-4-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2536-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2612-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2612-20-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2612-17-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download