a19f49bc321326c5361f10fc216789bb894f993ccbe9c8530a661d8711be0aa1

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
04-02-2024 14:27

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General

Target

2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe
Size

37KB
MD5

4d6be2cd723c8d005fcd8d011bcc27c8
SHA1

55e7cbe8ff59177b241af8983ab963b4f5b258ae
SHA256

a19f49bc321326c5361f10fc216789bb894f993ccbe9c8530a661d8711be0aa1
SHA512

69a3684d7b5340fec6dd366aac71f9efa8d00f36c329a6c31fdb563f24e5758f2e2ff939ba91080144d4478aab84af927c81df9b5ed60f314d78cf729ba20095
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXuni8LBEc:btB9g/WItCSsAGjX7e9N0hunLSc

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000012246-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2316	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2620	2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_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
2620	2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe
2316	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2620 wrote to memory of 2316	2620	2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe	28
PID 2620 wrote to memory of 2316	2620	2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe	28
PID 2620 wrote to memory of 2316	2620	2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe	28
PID 2620 wrote to memory of 2316	2620	2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-04_4d6be2cd723c8d005fcd8d011bcc27c8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2620
- 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:2316

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
37KB

MD5
6954f4f685e2f56fa2749c42ebe8cd30

SHA1
80035c1ea6f84771754ba3bd1bcb968e51cbdfde

SHA256
460cfc8580e0008385c87a6f3fe894c2effbcd644189c8b140199134e978736a

SHA512
33cbe9cf73dbe1f94cec72ad3bdb47b18b214596c7e51364d919bf6285a5c8bc8d992704269246bc7f82b364fc737fced7a4ca99e334411e0fe1a28bd344ccbd

Download Submit
memory/2316-16-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/2620-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2620-1-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2620-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download