61b6b3102c10aee6760b08344ae320df1056707bfdf4ccfbcb920f3e0feacfcc

Analysis

max time kernel
118s
max time network
121s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 16:31

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General

Target

2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe
Size

60KB
MD5

33987f8161b94c5b706db44eead0130d
SHA1

b91ecd3f298ff060d81d3c7b130838c05d90f640
SHA256

61b6b3102c10aee6760b08344ae320df1056707bfdf4ccfbcb920f3e0feacfcc
SHA512

37d633d254453c69f6f70c822ffadf515eb7d8365efd864c44ca10a9148417a17f25ae18038acbfb4f945527a00bdad80e74b0c3fd66d96787e1369aa12747ad
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHk:btng54SMLr+/AO/kIhfoKMHdd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012252-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1820	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
660	2024-02-18_33987f8161b94c5b706db44eead0130d_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
660	2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe
1820	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 660 wrote to memory of 1820	660	2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe	28
PID 660 wrote to memory of 1820	660	2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe	28
PID 660 wrote to memory of 1820	660	2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe	28
PID 660 wrote to memory of 1820	660	2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_33987f8161b94c5b706db44eead0130d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:660
- 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:1820

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
60KB

MD5
ed19a966336e93e26930ddf76959b3fe

SHA1
0ca5416788a325b685c72dafb8c37ef57912f779

SHA256
ce968b6489e6e328743cb5b519211407a105d9901b84db48ead91448ee7c6213

SHA512
51092c6ce5f1e01809f4be48ae6201a5f75a1893d9d6e62b043872131ebd23ffb0e6cf127ebe10bdbc989fcdf342ea77e229fc41e32466092dbda8a11babf2cb

Download Submit
memory/660-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/660-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/660-8-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/1820-18-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download