4e91e37043345d8bbe6def9738af5d98de4ccca354d639476044083711e89c36

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
07-06-2024 00:39

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General

Target

2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe
Size

63KB
MD5

f4e258df240fd9182fd7c7af8f8258c5
SHA1

84d0f24c66ed3ff8aff7afc71f6d75d622ce553f
SHA256

4e91e37043345d8bbe6def9738af5d98de4ccca354d639476044083711e89c36
SHA512

591eb241238ae533b1803768082c921a53d87e8f2dd14eee4ffe882cb005704be3453030916655dbf421716b5597c1db25ff22a09ba5ebbd4f36e9b1ce85a5ee
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnF7H8:btng54SMLr+/AO/kIhfoKMHdae

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012272-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2356	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1260	2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_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
1260	2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe
2356	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1260 wrote to memory of 2356	1260	2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe	28
PID 1260 wrote to memory of 2356	1260	2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe	28
PID 1260 wrote to memory of 2356	1260	2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe	28
PID 1260 wrote to memory of 2356	1260	2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_f4e258df240fd9182fd7c7af8f8258c5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1260
- 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:2356

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
63KB

MD5
71841c0d0bdc9ecbbf864a7c4dc566f9

SHA1
7c97f5b6fc8a0d2479804b212df16c2c592f2d84

SHA256
2d57ed7df3af79b8e5b7a9c9dd02491da6ff07c5c9b8aa199f5f540805561f54

SHA512
51a317f0399f236facf24d40cda374335f948e6a75dbb490d8c3542388725f12109d1c3feaddd263ad0532b5c1b212140156125069ef24ee447b0afb30e073ee

Download Submit
memory/1260-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1260-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1260-8-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2356-23-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download