5549336d56bf2447f54f805da2332f3c7025d51e85b0fa94dec3344a774d5845

Analysis

max time kernel
118s
max time network
119s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 03:51

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General

Target

2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe
Size

36KB
MD5

23a20cb6979845d55614ad98e60b39c0
SHA1

d0d64e255ad929ee755e67ad26ec78cdff98e3c1
SHA256

5549336d56bf2447f54f805da2332f3c7025d51e85b0fa94dec3344a774d5845
SHA512

41aa4e94481b43e0126acf4ff7358db491c358b3d6d25836815f0dada4eaa9403079bedbfab318b97f5c36713b40c670fb5b541eda754f1ded205bf187447193
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXuni8v:btB9g/WItCSsAGjX7e9N0hunv

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00070000000122c9-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2824	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2428	2024-02-03_23a20cb6979845d55614ad98e60b39c0_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
2428	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe
2824	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2428 wrote to memory of 2824	2428	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe	27
PID 2428 wrote to memory of 2824	2428	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe	27
PID 2428 wrote to memory of 2824	2428	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe	27
PID 2428 wrote to memory of 2824	2428	2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe	27

C:\Users\Admin\AppData\Local\Temp\2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_23a20cb6979845d55614ad98e60b39c0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2428
- 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:2824

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
f683ed827ecb18903056599edd27e009

SHA1
66585bfdd49bfdac61df040f912726a86c31a3e5

SHA256
2ffd26a1761f9f9b05920eedb59b07812455fd15e428641ae68cc5a929f90dab

SHA512
5fac3bcf7250f49ac580a67dd4328d778c187974cc80485d967e52b2b641e8e55493a4b881e4a28c77ce16f0e78d77a95bdcdd737930330d10271ea53eb276a3

Download Submit
memory/2428-0-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2428-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2428-8-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/2824-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download