6741218d1cbf5f8cf6626e79c7437fbe8e5bf55be6899dd9ded82f9c06f96106

Analysis

max time kernel
142s
max time network
146s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/01/2024, 22:26

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General

Target

2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe
Size

33KB
MD5

1224efdae504c2e1980f0ba97c27379e
SHA1

9764414cd69abb29bbab93616eee854c7687e79c
SHA256

6741218d1cbf5f8cf6626e79c7437fbe8e5bf55be6899dd9ded82f9c06f96106
SHA512

0a3250cbffecdf560e21c2292e56ddc7123cf486ea1791945e9002c3e654cf68e880b661f0b6ae2a3f10bdc18556f4fef7d1b70ea2599847d4062532c5de405a
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmo/bj:qmbhXDmjr5MOtEvwDpj5cD/H

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012264-11.dat	CryptoLocker_rule2
behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2372-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2372-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2372-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2372-25-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000012264-11.dat	UPX
behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2372-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2372-25-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2372	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1680	2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe

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 1680 wrote to memory of 2372	1680	2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe	28
PID 1680 wrote to memory of 2372	1680	2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe	28
PID 1680 wrote to memory of 2372	1680	2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe	28
PID 1680 wrote to memory of 2372	1680	2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_1224efdae504c2e1980f0ba97c27379e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2372

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
33KB

MD5
94cad0bb193bbc1f025bf94fc034b4d5

SHA1
76346fe78a56e5f57f89f0015fb444d083a5b2d8

SHA256
1069e6a9ce14b9dd1e494f6d60d008c95cb6930bfad4c596df5d9ae31d59409b

SHA512
8e5c33b00bfec1f4a2794f76d949f3944672c6f5990d6ce996b8ca20093856ab61260f5f667652083d2194b9cd0bbef404038965675094cf66151bee009ddab9

Download Submit
memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1680-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1680-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/1680-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2372-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2372-18-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2372-25-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download