c8eefc92d1c94c7a0ef25a3c26be09b1534e57c453ce8f9901ab4db6419f373e

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
29/04/2024, 16:25

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General

Target

2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe
Size

60KB
MD5

88c43b9915fc1a7b2f67fc8aa9b014dc
SHA1

8a54db969a2f4f5971aa4e791d10a177c5b73cf2
SHA256

c8eefc92d1c94c7a0ef25a3c26be09b1534e57c453ce8f9901ab4db6419f373e
SHA512

0b0315c359ebcfc378c1e37cda60db182b9702f536929e2e3916fb71e86559495dd121ac94698f100d37e1ae119061d3bccdeef2d4b86a878c7417520133c765
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZnK:btng54SMLr+/AO/kIhfoKMHdaK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000122ee-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2636	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2148	2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_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
2148	2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe
2636	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2636	2148	2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe	28
PID 2148 wrote to memory of 2636	2148	2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe	28
PID 2148 wrote to memory of 2636	2148	2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe	28
PID 2148 wrote to memory of 2636	2148	2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-29_88c43b9915fc1a7b2f67fc8aa9b014dc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2148
- 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:2636

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
61KB

MD5
79222ea0ca1903191e7e95ad4a30761b

SHA1
166f3cdbbb78a56b263794536268058ad7de52f9

SHA256
3f50dbeecc57cacdef096b2419e368e78a1d0f8b9ad00557b5a49d069b952a72

SHA512
12acde3795eb63dd481f6d935d6f332d1aef3948fea148079608457758258e967d6d78f4e3c1e19cb15417d2b533e5d4f9710b1ac81e23536070eb02b80a9ff7

Download Submit
memory/2148-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2148-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2148-8-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2636-23-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download