f66ae50dcd251e0b8f60c42ebfd9cb485220f07d016ec99b779786e715da8deb

Analysis

max time kernel
94s
max time network
123s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
01-06-2024 15:45

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General

Target

2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe
Size

37KB
MD5

26c88534e3bc028f949378425e179fe2
SHA1

e53ad3b9eaae1650ab5c763841ead48195965eb1
SHA256

f66ae50dcd251e0b8f60c42ebfd9cb485220f07d016ec99b779786e715da8deb
SHA512

ca083cfb6ad5565c330925d7dc51a51c9a30094e14cd8f81d0f135efead2bc38a2b2a1de9dae1384f4994ec5bba30e578616cfecd74174e9e790534508b5b197
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qvoLUZ61VSl3x:btB9g/WItCSsAGjX7r3BTmUQ1Vmx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000233c4-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4544	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 392 wrote to memory of 4544	392	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe	82
PID 392 wrote to memory of 4544	392	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe	82
PID 392 wrote to memory of 4544	392	2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-01_26c88534e3bc028f949378425e179fe2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:392
- 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:4544

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
37KB

MD5
ac48576ca9b36a3a7531d3ae2e912b04

SHA1
bfe09c27dc477887cf7a1231080f292ce2a12d46

SHA256
afa560fcd2a3d2b32282311b042ef65c51efff2793dd8e3741d1f395a1dc44c9

SHA512
f988926642864153abf6883eb529aee52465fac7ce038e39d8e153b1566912dcecbabd7a1be2f1c725eb995691f1c152e4ec995cfe4e265d5dfc6445b5f79ce3

Download Submit
C:\Users\Admin\AppData\Local\Temp\gewosik.exe

Filesize
185B

MD5
7c8a74e094edeba6e24b049663f3b0e3

SHA1
92b6e554c5d59971bc5d73716f5bc030e9cd77a9

SHA256
1451082985ca2ce44649c367d016950b55a6be4f03f786a9ff1bb15c7e77b0c1

SHA512
a96ab5d0c879e876f15f812e845897c7e84052bfd3ce0d662051d9bd5738bce93a55ec5792d0540f5959a2b832c308150131e8044b6f671f266d6e7395624b10

Download Submit
memory/392-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/392-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/392-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4544-25-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download