101a267cdd66cbf2025b1ee8a5eecfb8ca6b174625f589003d42aa779427fd20

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
04/06/2024, 23:23

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General

Target

2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe
Size

64KB
MD5

161654073bc83b812696413247e09469
SHA1

b1d106cd316da8ed823843c10b83f84fd2621fa4
SHA256

101a267cdd66cbf2025b1ee8a5eecfb8ca6b174625f589003d42aa779427fd20
SHA512

36246a6a543158b5231857403fd96ec8a6767d0762c2db3481f36c8b98e34ac69c9105a95b80f8921aea17be2d44d4afc58a7c508f61789d36e939b667009f03
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYMWR93:1nK6a+qdOOtEvwDpj4

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1784-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000015a2d-15.dat	CryptoLocker_rule2
behavioral1/memory/1784-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2936-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2936-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1784-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000015a2d-15.dat	CryptoLocker_set1
behavioral1/memory/1784-14-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2936-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2936-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1784-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000c000000015a2d-15.dat	UPX
behavioral1/memory/1784-14-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2936-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2936-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2936	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1784	2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1784-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000c000000015a2d-15.dat	upx
behavioral1/memory/1784-14-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2936-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2936-26-0x0000000000500000-0x000000000050F311-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 1784 wrote to memory of 2936	1784	2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe	28
PID 1784 wrote to memory of 2936	1784	2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe	28
PID 1784 wrote to memory of 2936	1784	2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe	28
PID 1784 wrote to memory of 2936	1784	2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-04_161654073bc83b812696413247e09469_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1784
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2936

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

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

Filesize
65KB

MD5
69b117f07376bac1ad478f6b9a1760ec

SHA1
6114389c76099ecb02acdb509155d48a121e0c64

SHA256
9a4b360ae2c128e459602054d4671c27af566c93442086f5c5e2e446d9cfc1e6

SHA512
3f6cf24cc77d840e8f93cd4d310394cc4cb63e702dc415e33c60d9e518b401cc0d15ea9b68a5fbe5eb969001d289f010f0ab9824c06ced9a6a9ee4999ad0bb6a

Download Submit
memory/1784-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1784-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1784-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1784-2-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/1784-14-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2936-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2936-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2936-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2936-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download