87945097592a7625f5761cf9b5233c1b69e9d480ccf2592b35c0b07615ea6f2f

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
12/05/2024, 19:12

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General

Target

2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe
Size

37KB
MD5

04585406894e53deeafd0dda8d3c5c31
SHA1

5e1f287765bfa301c7af90933ba7020b4e6aa631
SHA256

87945097592a7625f5761cf9b5233c1b69e9d480ccf2592b35c0b07615ea6f2f
SHA512

dac8f268ccc7b5629bf8a2b0be50d56fd9a07d688285817764994265ef34df78996d1ef2025dd79f4b92ffd28c05584288b84d2fb23b3459074d6bdf273b7fac
SSDEEP

768:qUmnjFom/kLyMro2GtOOtEvwDpjeMLam5axK3uO:qUmnpomddpMOtEvwDpjjaYaQuO

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d0000000144e9-11.dat	CryptoLocker_rule2
behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d0000000144e9-11.dat	CryptoLocker_set1
behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000d0000000144e9-11.dat	UPX
behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2496	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2160	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000d0000000144e9-11.dat	upx
behavioral1/memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2496-26-0x0000000000500000-0x000000000050F000-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 2160 wrote to memory of 2496	2160	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe	28
PID 2160 wrote to memory of 2496	2160	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe	28
PID 2160 wrote to memory of 2496	2160	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe	28
PID 2160 wrote to memory of 2496	2160	2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_04585406894e53deeafd0dda8d3c5c31_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2496

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
37KB

MD5
2dcb6ef4b880c285d7994feaf1fa9922

SHA1
73cffa6192fc9ed72f53a597845164a98a5feefe

SHA256
975de1415c01ce16a574c53422db799edda485aade0af61ff8fdd0c1cbdc6152

SHA512
c14072fa54bce88b1f63a9b8318393bbb47a68702e0d0c8b6aaef0077a39c2861416a2bbcb0c39a33f8c74880eb87322a53a8eec0e2353986cf61ed067cec8ae

Download Submit
memory/2160-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2160-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2160-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2160-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2160-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2496-18-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download
memory/2496-25-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2496-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download