c77d278a04d1aee1cd22f5d5bb9d81bdae00939fe9c7d3e71c4420f22afc6a3d

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240221-en
resource tags

arch:x64arch:x86image:win10v2004-20240221-enlocale:en-usos:windows10-2004-x64system
submitted
22/02/2024, 12:43

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General

Target

2024-02-22_6f655890239577db47466ca7d538d22e_cryptolocker.exe
Size

36KB
MD5

6f655890239577db47466ca7d538d22e
SHA1

22f5b959e535d891c687ecd193701340ec508333
SHA256

c77d278a04d1aee1cd22f5d5bb9d81bdae00939fe9c7d3e71c4420f22afc6a3d
SHA512

c91077b7738f013ec4bd5a8ae52bebbf761cc7f91a25b45e9810e0ec691668dff26a95f8b0097ea252fcda1cfaa17d765b528b87a7a41621c5817dd38a50002d
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2BodcAOjbQ36ttTW:btB9g/WItCSsAGjX7r3BGubEL

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023212-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	2024-02-22_6f655890239577db47466ca7d538d22e_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1790404759-2178872477-2616469472-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
1616	gewos.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5044 wrote to memory of 1616	5044	2024-02-22_6f655890239577db47466ca7d538d22e_cryptolocker.exe	87
PID 5044 wrote to memory of 1616	5044	2024-02-22_6f655890239577db47466ca7d538d22e_cryptolocker.exe	87
PID 5044 wrote to memory of 1616	5044	2024-02-22_6f655890239577db47466ca7d538d22e_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-02-22_6f655890239577db47466ca7d538d22e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-22_6f655890239577db47466ca7d538d22e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5044
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  PID:1616

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
36KB

MD5
cbb328a8f024b2463fb35969d22514a4

SHA1
c4c3c565aacca88777b846efbad9c8ae3073cd37

SHA256
4d58e3ac35b7e7173d2e944767fba2b849c97fc41832d7e33dbcfcdcc21e7e09

SHA512
53581705e90d243b9e97e02cd8b5000abed6804865027fb1c53c2b92a57723b0b14a7cbc8820c01b704d2d5854537cf697d4ae0eb742d82ca53926a1c8633fff

Download Submit
memory/1616-20-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/5044-0-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5044-1-0x0000000002350000-0x0000000002356000-memory.dmp

Filesize
24KB

Download
memory/5044-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download