fb8ec63711aed81d81e846bbd2dd337e70cea667d6e220c1442122a91c905043

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
15/06/2024, 07:45

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General

Target

2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe
Size

59KB
MD5

ecce43abb051280b272162f99549bfd6
SHA1

ed247fc7adb77036a5fce8b7885b84673a41c332
SHA256

fb8ec63711aed81d81e846bbd2dd337e70cea667d6e220c1442122a91c905043
SHA512

0b8480d6afab109ac823f50c5da9ec42deea171a2a0701349321888128ee04f4c7081820cd002224f6aecddf645a5bbcfd71e41df101d93e437b4dee1278d3b5
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YMLam5ax+N8:z6QFElP6n+gKmddpMOtEvwDpj9aYaz

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000500000000b309-11.dat	CryptoLocker_rule2
behavioral1/memory/2456-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2708-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2708-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000500000000b309-11.dat	CryptoLocker_set1
behavioral1/memory/2456-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2708-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2708-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000500000000b309-11.dat	UPX
behavioral1/memory/2456-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2708-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2708-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2708	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2456	2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2456-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000500000000b309-11.dat	upx
behavioral1/memory/2456-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2708-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2708-26-0x0000000000500000-0x0000000000510000-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 2456 wrote to memory of 2708	2456	2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe	28
PID 2456 wrote to memory of 2708	2456	2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe	28
PID 2456 wrote to memory of 2708	2456	2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe	28
PID 2456 wrote to memory of 2708	2456	2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-15_ecce43abb051280b272162f99549bfd6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2708

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
59KB

MD5
b6b949b1b7f9178f7417d69c467725de

SHA1
77c13ccc710171077d58ed055b98e4c7c7f7696c

SHA256
8a970205b6d1f9569fe56e15513f7b96d6b3c12b9b44c96fd24cab8a9bdfce65

SHA512
619648d9bdcb21f52e43151dadd323520ebd89aa15f47a9eb94ebe6508c1fb55ce8845b27607b78b0066a8c9306bb1288c6e0e723b730776af273fdfa85f5fa8

Download Submit
memory/2456-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2456-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2456-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2456-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2456-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2708-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2708-18-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2708-25-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2708-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download