4624aae5c3cd4d994d8dc3f800df640d667fbc3e88742874e0f21f4c3620bac9

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
21/05/2024, 15:42

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General

Target

2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe
Size

68KB
MD5

534003edc0cf10464fcaa6b66b8b8036
SHA1

cd29699d53c6b16ada8fac25198472e411d8b214
SHA256

4624aae5c3cd4d994d8dc3f800df640d667fbc3e88742874e0f21f4c3620bac9
SHA512

6e322f107e5607b9f6d44ce262c8c7eea552741be4d14a0a824c9b63da63c752e5bfd95c01202635becc2e06e74d941fb605ac55a279731768e5ca0e537618f5
SSDEEP

1536:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAek:78SEOtEvwDpjWYvQd2Px

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2992-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001226b-11.dat	CryptoLocker_rule2
behavioral1/memory/804-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2992-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/804-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2992-1-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001226b-11.dat	CryptoLocker_set1
behavioral1/memory/804-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2992-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/804-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2992-1-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000d00000001226b-11.dat	UPX
behavioral1/memory/804-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2992-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/804-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
804	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2992	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2992-1-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000d00000001226b-11.dat	upx
behavioral1/memory/804-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2992-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/804-27-0x0000000000500000-0x000000000050F000-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 2992 wrote to memory of 804	2992	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe	28
PID 2992 wrote to memory of 804	2992	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe	28
PID 2992 wrote to memory of 804	2992	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe	28
PID 2992 wrote to memory of 804	2992	2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_534003edc0cf10464fcaa6b66b8b8036_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2992
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:804

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
69KB

MD5
024a143e0a8e33d9bdf886a873ea1204

SHA1
a364edfae8b5abb17118fedda508646b9afc498b

SHA256
7db8093b625868e1f13a768e74735a6d1106b1ed28ed8ae93be8db6bf7af1e06

SHA512
dd8f4e264f7effc75016f07cec9ace71844e035d430af785206791793bae0c9f9ba94d0b5050852233e32d76a095839312d7e12f4b0653863ce1f02a7b6ec417

Download Submit
memory/804-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/804-19-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/804-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/804-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2992-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2992-1-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2992-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2992-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2992-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download