a5d425977168e024e63fd262e5f32cf320af82cecca1aef7647ec552e2841050

Analysis

max time kernel
117s
max time network
118s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 00:31

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General

Target

2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe
Size

64KB
MD5

21a29e9083bbe49286141bc81d2a441d
SHA1

29f0b2a37d07d559662c66ae68e63762fa6706e1
SHA256

a5d425977168e024e63fd262e5f32cf320af82cecca1aef7647ec552e2841050
SHA512

231da1b80c241e6922a3a8a99ab878a3f34a6d5125009ef8c2a34cd0cf5c58a7c2e1a5571b1835657b924b8e745638ffb999c8a9165c4ce4972f69b1f860f2a0
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHaxi:btng54SMLr+/AO/kIhfoKMHdPi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012342-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2216	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	2024-05-01_21a29e9083bbe49286141bc81d2a441d_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
1704	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe
2216	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2216	1704	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe	28
PID 1704 wrote to memory of 2216	1704	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe	28
PID 1704 wrote to memory of 2216	1704	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe	28
PID 1704 wrote to memory of 2216	1704	2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_21a29e9083bbe49286141bc81d2a441d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1704
- 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:2216

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
64KB

MD5
a1daeb4cb0c05b792819036f0f967ff6

SHA1
7ab0dd8448e9ddcbf56fcc7ce4dd2fc6d97d41bd

SHA256
a76fe8169df039f62473cdfb2d8e24bd27273e8a95e3c60676d5284d68412d05

SHA512
e06c917e7c5922d20ef118ce350b3131117d19d0f96c68a9f2888a396e863181c62f9093d77f1ce40dcbcbef9191f48a8d0dfc1a82632ae0c23fada5d1257fdf

Download Submit
memory/1704-0-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1704-8-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1704-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2216-23-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download