73228fbd28718de5bc86b02cbd0e745ec0024c28e02bd64873cbccacb271fc96

Analysis

max time kernel
120s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
24/01/2024, 00:52

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General

Target

2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe
Size

40KB
MD5

eb523e627938667346053c87931ed523
SHA1

c07a35844ecef93b5a2e84b85a1f8448e5805616
SHA256

73228fbd28718de5bc86b02cbd0e745ec0024c28e02bd64873cbccacb271fc96
SHA512

4c16aa28ab7649e42ec527c6228b1d3e1dbeba493246520ca290056e780bbe6bbb0e50ac15b471f683ed62ed64d6c3cf1f7bfad85f001bf349a3bf4a352c526e
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwIxZWQpj:btB9g/WItCSsAGjX7e9N0hunrknlj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001224e-22.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2076	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1340	2024-01-24_eb523e627938667346053c87931ed523_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
1340	2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe
2076	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1340 wrote to memory of 2076	1340	2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe	28
PID 1340 wrote to memory of 2076	1340	2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe	28
PID 1340 wrote to memory of 2076	1340	2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe	28
PID 1340 wrote to memory of 2076	1340	2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-24_eb523e627938667346053c87931ed523_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1340
- 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:2076

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

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
40KB

MD5
af31ce04cccafcde8e82c28b10c5681e

SHA1
e6534d0a885437ff528645ddb4c88f54aa140b4d

SHA256
cbc15952ad1c5ab712d2eaabb4ceb484e6f790fb3e2224e679274fdf82f0731b

SHA512
ed57a0bf4c8e0d30ce55b7bd99975adb80213e2002a5bf1b6cf943018ea256e609079fc2f562afe7e57482c07881f8dd7302da38f5ef7ba8eaae37682c4b6e53

Download Submit
memory/1340-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1340-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1340-8-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2076-23-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download