f66ae50dcd251e0b8f60c42ebfd9cb485220f07d016ec99b779786e715da8deb

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01-06-2024 15:45

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General

Target

2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe
Size

37KB
MD5

26c88534e3bc028f949378425e179fe2
SHA1

e53ad3b9eaae1650ab5c763841ead48195965eb1
SHA256

f66ae50dcd251e0b8f60c42ebfd9cb485220f07d016ec99b779786e715da8deb
SHA512

ca083cfb6ad5565c330925d7dc51a51c9a30094e14cd8f81d0f135efead2bc38a2b2a1de9dae1384f4994ec5bba30e578616cfecd74174e9e790534508b5b197
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qvoLUZ61VSl3x:btB9g/WItCSsAGjX7r3BTmUQ1Vmx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014909-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2560	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1656	2024-06-01_26c88534e3bc028f949378425e179fe2_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
1656	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe
2560	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2560	1656	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe	28
PID 1656 wrote to memory of 2560	1656	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe	28
PID 1656 wrote to memory of 2560	1656	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe	28
PID 1656 wrote to memory of 2560	1656	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1656
- 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:2560

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
ac48576ca9b36a3a7531d3ae2e912b04

SHA1
bfe09c27dc477887cf7a1231080f292ce2a12d46

SHA256
afa560fcd2a3d2b32282311b042ef65c51efff2793dd8e3741d1f395a1dc44c9

SHA512
f988926642864153abf6883eb529aee52465fac7ce038e39d8e153b1566912dcecbabd7a1be2f1c725eb995691f1c152e4ec995cfe4e265d5dfc6445b5f79ce3

Download Submit
memory/1656-0-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1656-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1656-1-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2560-23-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download