f1603e63023e1ac347b0fa771cb0f9bf27bccb8bacc3b36a263c9d7935f436ac

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
06/03/2024, 13:52

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General

Target

2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe
Size

36KB
MD5

f9b3eb098b1446e6439c9c7b372def99
SHA1

583bfcc58374b73dcbf5dda9a1860bb8c7893784
SHA256

f1603e63023e1ac347b0fa771cb0f9bf27bccb8bacc3b36a263c9d7935f436ac
SHA512

1d14e52ce16defd472d0fe60a985822697bd0748018c1bbf3091216831d79e56739ef748e3081acce40f8cac1128ee6ac60f92d9294032c0582f44e5b9ac5177
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunop:btB9g/WItCSsAGjX7e9N0hunop

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000013a3f-13.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1712	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2068	2024-03-06_f9b3eb098b1446e6439c9c7b372def99_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
2068	2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe
1712	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2068 wrote to memory of 1712	2068	2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe	28
PID 2068 wrote to memory of 1712	2068	2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe	28
PID 2068 wrote to memory of 1712	2068	2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe	28
PID 2068 wrote to memory of 1712	2068	2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-06_f9b3eb098b1446e6439c9c7b372def99_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2068
- 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:1712

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
36KB

MD5
200c60dc4ce01925d5098574d4bcdb41

SHA1
43143b311a5442298b447e27ae9123bc7b30a205

SHA256
2a52abba2898b635c1471179ae035373ed9be998444e1d17b5728c2e7a8509cd

SHA512
aad46e73dee8b2e6931f1060c76820df195592d0d7d78cc87ce333b80807497afed198a4fc46e4dc42d55be65ba82e1c988bb36f205bcd493356a53ebceea187

Download Submit
memory/1712-17-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2068-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2068-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2068-8-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download