36a759f40a499c83c1f133e880e4c3bc101ac01ab22ca9bb45f924812e86cac9

Analysis

max time kernel
121s
max time network
122s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
03/05/2024, 02:32

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General

Target

2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe
Size

35KB
MD5

f34bbc5a223544d1122e2d1078d3fcc1
SHA1

c277124dd88218163418fc3a3c7cf0ec892c0dbf
SHA256

36a759f40a499c83c1f133e880e4c3bc101ac01ab22ca9bb45f924812e86cac9
SHA512

bf9bec8323c7b72dfa5becf7fbdfbfd328b25d79d930065abb5ef8df83ecb0bac7471385044ab0be90c49720fcb905edabe91f27fa20e4d1d69cf5efc043f26e
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qZ59:btB9g/WItCSsAGjX7r3BTZ59

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000015d59-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2716	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2852	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2852	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe
2716	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2716	2852	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe	28
PID 2852 wrote to memory of 2716	2852	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe	28
PID 2852 wrote to memory of 2716	2852	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe	28
PID 2852 wrote to memory of 2716	2852	2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_f34bbc5a223544d1122e2d1078d3fcc1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2852
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2716

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\gewos.exe

Filesize
36KB

MD5
0042c0d54eccd714b0a92891c922598c

SHA1
bd994ec266df6fb2389d20070f83d4bcd4882c7f

SHA256
f0c5e6f7fb2b48a807fe3e2cd6b6eebd66319afc68bcb2fc2b0882da17342b44

SHA512
7934d7bb91585e22d8bd7c09a22a4f2f1f4cff54bb7dc503e4c43b921a17e5aa5cbb974b5a9acbf3f52b7747f3ad0971a673e1c309677cc9e3f6868204ee7249

Download Submit
memory/2852-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2852-8-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2852-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download