a7e359ff2252b3ec9268876f4154690ef52619e0238ff0542540bf9b3883ae62

Analysis

max time kernel
93s
max time network
96s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 03:50

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General

Target

2024-04-28_c0bb7de9ce856c58c51e50c2ab2caf8d_cryptolocker.exe
Size

35KB
MD5

c0bb7de9ce856c58c51e50c2ab2caf8d
SHA1

1822dacf84660b9085121c3f206b6083e5d79069
SHA256

a7e359ff2252b3ec9268876f4154690ef52619e0238ff0542540bf9b3883ae62
SHA512

e7f49edd054fd175780f5956e9299cf6b8b2649066d947848dec093f0ee36928d9c31a6c002a0a506cc4b8f42afe702b0aae4420a429eda550ab99f48c02adf9
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qZ9:btB9g/WItCSsAGjX7r3BTZ9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000023400-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-04-28_c0bb7de9ce856c58c51e50c2ab2caf8d_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2160	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 4520 wrote to memory of 2160	4520	2024-04-28_c0bb7de9ce856c58c51e50c2ab2caf8d_cryptolocker.exe	84
PID 4520 wrote to memory of 2160	4520	2024-04-28_c0bb7de9ce856c58c51e50c2ab2caf8d_cryptolocker.exe	84
PID 4520 wrote to memory of 2160	4520	2024-04-28_c0bb7de9ce856c58c51e50c2ab2caf8d_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-28_c0bb7de9ce856c58c51e50c2ab2caf8d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_c0bb7de9ce856c58c51e50c2ab2caf8d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4520
- 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:2160

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
35KB

MD5
93bd80f7fcced6ab7b908e41c3139787

SHA1
f183341ab27e1dcf2541e30203614d1e1f2756a1

SHA256
2fba5528e107799e68110e417f2852b50cb1859ee90a5f7691ee888f40162b78

SHA512
881d266d661d599aee9950c59347300482e0a55bcca1a0c3c51c1396ff49b67edfa899db554ee3c8673f0736736023d1c0fc7bc9c53838c6d4b4518980536a44

Download Submit
memory/2160-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4520-0-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download
memory/4520-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4520-8-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download