83d174b8e61792ebf45f7b530f86c7e0b04da27c03dcfd44352624d2d461bd71

Analysis

max time kernel
122s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/04/2024, 09:23

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General

Target

2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe
Size

60KB
MD5

5cf62fe707503ca3d2548ccd180f7aa0
SHA1

aa4830a974886aa6242f129f8c2b8cbfb7229a77
SHA256

83d174b8e61792ebf45f7b530f86c7e0b04da27c03dcfd44352624d2d461bd71
SHA512

a6e5d2e1f5892fc3da5668af8e3b111d00581676691ee67657f204a484875441be9b0096b7e4a44d274d598993bb8c009d67ba6920c8a34675016b962720c5b2
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHZp:btng54SMLr+/AO/kIhfoKMHdap

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001227e-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2512	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1948	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_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
1948	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe
2512	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1948 wrote to memory of 2512	1948	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe	28
PID 1948 wrote to memory of 2512	1948	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe	28
PID 1948 wrote to memory of 2512	1948	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe	28
PID 1948 wrote to memory of 2512	1948	2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_5cf62fe707503ca3d2548ccd180f7aa0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1948
- 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:2512

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
acf515a97aacd64a271508c1a93af02f

SHA1
d836f739dba290c2fc8d4c8bcbfda4a4a37bb51d

SHA256
03c30dd83ac37c01a093501289c51d3f521addceaaaf6a677d1f8d911a5cdb6b

SHA512
09a3cb3f52159a1728391165b5d508c0d747e7b3c438b364225a10d9299ed2115f691c2eee8516eadeca8cb801060c43c776d189d75fa8b3aa09ebe335217aef

Download Submit
memory/1948-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1948-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1948-1-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2512-18-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download