b7cee661ed2bbf92c53de025d019ec56fa7860de25458539e4ca75ac0d8c6bc8

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
13-02-2024 08:20

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General

Target

2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe
Size

45KB
MD5

ded73e00ecec6250b6558546158f00e6
SHA1

f9eb8caf151fb9e338234fe3c58adef28104e791
SHA256

b7cee661ed2bbf92c53de025d019ec56fa7860de25458539e4ca75ac0d8c6bc8
SHA512

a530e9ebead68685358a527f44ba2ac54bceb4da6d3e089fa3e18fd4be117d6d0963e9e4a73ee895943ec41d4fb23d6c3e2f11ca8754810991d4b329645334a7
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSS/hS:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2184-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012266-11.dat	CryptoLocker_rule2
behavioral1/memory/2184-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2184-12-0x0000000002800000-0x000000000280B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2184-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012266-11.dat	CryptoLocker_set1
behavioral1/memory/2184-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2184-12-0x0000000002800000-0x000000000280B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2344	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2184	2024-02-13_ded73e00ecec6250b6558546158f00e6_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 2184 wrote to memory of 2344	2184	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe	28
PID 2184 wrote to memory of 2344	2184	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe	28
PID 2184 wrote to memory of 2344	2184	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe	28
PID 2184 wrote to memory of 2344	2184	2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_ded73e00ecec6250b6558546158f00e6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2344

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
45KB

MD5
1409ef78797641a95977d75727f664ad

SHA1
fbad9a0aeaa29bff82c02ff498a151bf5eb7cd52

SHA256
ffac4704c31ececfe8921dea59abec8215281dc4f3f8aa2210fcbb436406f5bd

SHA512
279d17d38b2688c2cdd07b0456acbf1ae7247ce1190fca84909cdc33496123d4a2ccfcf94ca88e3b51f3c6f0e7dfdc83f930cb69d3569ad9eee0c4543e939c65

Download Submit
memory/2184-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2184-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2184-2-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2184-4-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2184-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2184-12-0x0000000002800000-0x000000000280B000-memory.dmp

Filesize
44KB

Download
memory/2344-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2344-21-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download