dc83b0aa03f0479647b5c5eb59355878cf54bc82ce95d1e66f300da61140cbbe

Analysis

max time kernel
118s
max time network
129s
platform
windows7_x64
resource
win7-20240319-en
resource tags

arch:x64arch:x86image:win7-20240319-enlocale:en-usos:windows7-x64system
submitted
11-04-2024 02:33

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General

Target

2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe
Size

39KB
MD5

64029503c8a95687fb84525a6453eab1
SHA1

e6b80050e99b51162a559baa9c560bfaf7be070e
SHA256

dc83b0aa03f0479647b5c5eb59355878cf54bc82ce95d1e66f300da61140cbbe
SHA512

d505d9ced3db6b526b9a90560a4d84fdd15bab1af2eeea0b3bb8a853d90c5fe70a76af72c43580b5d02d5cbf0b2f408103a44c569c3e2f5b3280b93f7448ccc5
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/Ec:btB9g/WItCSsAGjX7e9N0hunKLYP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000121c5-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2868	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2092	2024-04-11_64029503c8a95687fb84525a6453eab1_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
2092	2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe
2868	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 2868	2092	2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe	28
PID 2092 wrote to memory of 2868	2092	2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe	28
PID 2092 wrote to memory of 2868	2092	2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe	28
PID 2092 wrote to memory of 2868	2092	2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_64029503c8a95687fb84525a6453eab1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2092
- 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:2868

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
39KB

MD5
b8824c1e650ab2bcee32a9ea3196a4e6

SHA1
6d0c42510cc9294f4eac80a174fb23d5d7066ea7

SHA256
39791ef2852e5aee8a7b40ef7ad580f0fd87751e7fbdda9600711460206885e0

SHA512
d36939d99a6e531639dcd07bfeff31d97959f22c54db792094dab012477ab68ecc9b5ffdc1e6f48479ce1397f28c3d84664b28c55cd904276999ca3c776ef774

Download Submit
memory/2092-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2092-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2092-7-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2868-23-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download