a9a052d9d930b6d98498028c356059bc44975dc55486ba8d49530467f95e684e

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/02/2024, 17:57

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe
Size

35KB
MD5

db76e76906e8195e28ba589a38df98e9
SHA1

99dc096b0cf9c2637fe8ba0672a660c3eb7abf81
SHA256

a9a052d9d930b6d98498028c356059bc44975dc55486ba8d49530467f95e684e
SHA512

be4b66deda351054f8061b4c1eedca682af81375121760808ff76e2231334c4bf768fad52603f99e5522053a7cfabf2dc264f5c7bf94d3a4f05a8f92f72f35ed
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKQY:btB9g/WItCSsAGjX7e9N0hunKn

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000012248-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2644	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2112	2024-02-21_db76e76906e8195e28ba589a38df98e9_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
2112	2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe
2644	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2644	2112	2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe	28
PID 2112 wrote to memory of 2644	2112	2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe	28
PID 2112 wrote to memory of 2644	2112	2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe	28
PID 2112 wrote to memory of 2644	2112	2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_db76e76906e8195e28ba589a38df98e9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2112
- 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:2644

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
35KB

MD5
957f0df647cd2b2ebc0cc1166bb87ec1

SHA1
f4e22025c871377d9eeeaaf6d71fb2aac978580a

SHA256
e8a01984e5fc3bcfdecbff434853379be36bbc0f380230cf98d4e58a050438d8

SHA512
1f1d07cefad9fb4982ed05b83613428db9474bef80ab6d6c6283b8e5e7b677a137fe6bec861c9810b6d28ca2109a93c66c82aac8fd45ad4048837e38c52f3135

Download Submit
memory/2112-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2112-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2112-8-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/2644-20-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download