ac7bab240c329a45b202befa2c433245781d942187a1b0c8f56baae9560ed9be

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/02/2024, 07:37

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-29_779df08fea9dcc3f9cdb86eb2f8ca8b5_cryptolocker.exe
Size

39KB
MD5

779df08fea9dcc3f9cdb86eb2f8ca8b5
SHA1

d0d395d3ae9e84df77b381707c147405f9ac819b
SHA256

ac7bab240c329a45b202befa2c433245781d942187a1b0c8f56baae9560ed9be
SHA512

db2d8b4f1ffe06e9b174e289a8b91a1019048562fe9ab65cdaf1a4976c70cf7215b61a132d59c4e4ae6fb8b6dcc69a3ebd4cbb5a9a1c39052736d52935899e2e
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwI+YQ7U:btB9g/WItCSsAGjX7e9N0hunrkko

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001000000002313b-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-02-29_779df08fea9dcc3f9cdb86eb2f8ca8b5_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2776	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 2928 wrote to memory of 2776	2928	2024-02-29_779df08fea9dcc3f9cdb86eb2f8ca8b5_cryptolocker.exe	88
PID 2928 wrote to memory of 2776	2928	2024-02-29_779df08fea9dcc3f9cdb86eb2f8ca8b5_cryptolocker.exe	88
PID 2928 wrote to memory of 2776	2928	2024-02-29_779df08fea9dcc3f9cdb86eb2f8ca8b5_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-29_779df08fea9dcc3f9cdb86eb2f8ca8b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_779df08fea9dcc3f9cdb86eb2f8ca8b5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2928
- 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:2776

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

Loading Replay Monitor...

Downloads

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

Filesize
39KB

MD5
9776640dab4ac3ca08b0e3aea34f6b37

SHA1
ea11b764d964e0fc1c60937538fa1db90bde0d37

SHA256
41eb74d50a000d12a818e5b2f48623b81591d13733cb2bb5f9ede1fbe206fe98

SHA512
48435ff2ed066ee43516b2fd5d134ba68411b27f694a32b9e7671f7c5a32f20638138955641c0e11732cd90f2f7b1bca8fda7eac887e29a58361b83939379b01

Download Submit
memory/2776-25-0x0000000001FA0000-0x0000000001FA6000-memory.dmp

Filesize
24KB

Download
memory/2928-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2928-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/2928-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download