c4bf1f3e07b7a88b828b2a5e6dc2607df81426814698c3fd1b8578ae06ec90ad

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 20:54

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General

Target

2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
Size

63KB
MD5

dcca372632b971aa18ab6086f57f12c1
SHA1

e9a75dd10328322b30eb0894ced189c23c750f9c
SHA256

c4bf1f3e07b7a88b828b2a5e6dc2607df81426814698c3fd1b8578ae06ec90ad
SHA512

4574100e39f2c5b5b80f8a19b1a99ebe664e43b0a7926af13887669e82fdf019e2d54030cddec560ebb2a4aeb03a61dc5b2bfcafbec51c9f0851b6cd0ea34334
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnx9:btng54SMLr+/AO/kIhfoKMHdaL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012286-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1272	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2580	2024-05-31_dcca372632b971aa18ab6086f57f12c1_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
2580	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
1272	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2580 wrote to memory of 1272	2580	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe	28
PID 2580 wrote to memory of 1272	2580	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe	28
PID 2580 wrote to memory of 1272	2580	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe	28
PID 2580 wrote to memory of 1272	2580	2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_dcca372632b971aa18ab6086f57f12c1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2580
- 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:1272

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
63KB

MD5
5f9b896c72bffaf037e0201d2f6399bf

SHA1
b04d50b06b02b8d89807e9b809299a993299131e

SHA256
80148aae380ad888ba992ab311400b44627dd65abe7a8ed71458282595bdd1f3

SHA512
74dfb1878157ec453c0eefd0c5798c14f2ab9fb5454b0fb8353924254864bf00e784fa11a88c2ccd15da2f5857d9bfd0ea25b90562621053db73a5bc954e1745

Download Submit
memory/1272-23-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2580-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2580-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2580-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download