f0b5281a6d583ad04085085f720c5f5b39b7e38cdc42c89b3e2a6b4ad65ab16d

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07/03/2024, 22:26

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General

Target

2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe
Size

90KB
MD5

35cdab0a341549d97eea832136aa8515
SHA1

c681d59cef385bc836e8c1d8f4e3ce61650e41f7
SHA256

f0b5281a6d583ad04085085f720c5f5b39b7e38cdc42c89b3e2a6b4ad65ab16d
SHA512

7f3562c155d01d9bfd777831beb8f82029f66585a51b93b39d8910250f00f38f85d81041b61f3167ee685cb63b21831007a784a77e7e05e0827dc7c972f1a011
SSDEEP

1536:vj+jsMQMOtEvwDpj5H8u8rBN6nqEZNi1OkQNpAi:vCjsIOtEvwDpj5H8zPsT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224f-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224f-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1688	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
1288	2024-03-07_35cdab0a341549d97eea832136aa8515_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 1288 wrote to memory of 1688	1288	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe	28
PID 1288 wrote to memory of 1688	1288	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe	28
PID 1288 wrote to memory of 1688	1288	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe	28
PID 1288 wrote to memory of 1688	1288	2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-07_35cdab0a341549d97eea832136aa8515_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1688

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\misid.exe

Filesize
90KB

MD5
11019863186ac24dbf6c52dddfcfe99b

SHA1
e50c4f7a2c5e9b90266fd1c697629b14ca193f7b

SHA256
af1e2355a93d496204e66d1750e5773c2bed521648e2b48596c7610fb161e517

SHA512
346fc96b6287f3384b0c08ed3ff0c18f5bbba19fcad40cf20c7928e27bfca387238510db84a9a0e3fa8fe62dd0fa7a8fcb45c432527f80c495c40ce032afd4b4

Download Submit
memory/1288-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1288-1-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1288-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1688-15-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/1688-16-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download