0e985c96bd3ca469fa79cebcabce706dd5d49f714f534908e44ef4bf0ffb5f31

Analysis

max time kernel
147s
max time network
148s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 04:44

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General

Target

2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe
Size

68KB
MD5

8d405d3a444a66914e75d0fa72b780ca
SHA1

b57952cf4082b723eac08029e33a66a25c05e058
SHA256

0e985c96bd3ca469fa79cebcabce706dd5d49f714f534908e44ef4bf0ffb5f31
SHA512

1fc6e48d296da55acfa8ed956f29bc2b6c4f7ad6780789eb4a6829ff1a23acd83db2ed417f8180c324cc3b0bb71e764e133f203af3d8169f3703d4a7ef48eaec
SSDEEP

768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1Pm:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAm

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001450b-24.dat	CryptoLocker_rule2
behavioral1/memory/2940-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2944-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2940-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001450b-24.dat	CryptoLocker_set1
behavioral1/memory/2940-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2944-8-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2940-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001450b-24.dat	UPX
behavioral1/memory/2940-16-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2944-8-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2940-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2940	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2944	2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000c00000001450b-24.dat	upx
behavioral1/memory/2940-16-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2944-8-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2940-26-0x0000000000500000-0x000000000050F000-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 2944 wrote to memory of 2940	2944	2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe	28
PID 2944 wrote to memory of 2940	2944	2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe	28
PID 2944 wrote to memory of 2940	2944	2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe	28
PID 2944 wrote to memory of 2940	2944	2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_8d405d3a444a66914e75d0fa72b780ca_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2940

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
68KB

MD5
c7417c391bd5703b1a86742789429904

SHA1
1b7b3fef291d49f917ede0db66d34c257b6f5b7a

SHA256
1b459b6ae5dae646d5692d9fd28acf3b191200bfd06adc45225373cfd791cc85

SHA512
414c3d9b1e217d882f0f7f0129f109ba1355ce04bb02e3adcda24d679123e9bcc4291b90831790d9080ada59b4b46ae7189bad064a91f10df18b13441b32c568

Download Submit
memory/2940-25-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2940-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2940-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2940-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2944-9-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2944-8-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2944-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2944-0-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download