78c9974c24e83870d0c30aeef3ec1a4a65ec61f61230f88c2c97d800b3bcffec

Analysis

max time kernel
148s
max time network
154s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/04/2024, 07:26

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General

Target

2024-04-09_27e5ce51cfb96ef6efe3531e285df54b_cryptolocker.exe
Size

34KB
MD5

27e5ce51cfb96ef6efe3531e285df54b
SHA1

04429a1bbb0605d46329e4f33266724cf64c42c7
SHA256

78c9974c24e83870d0c30aeef3ec1a4a65ec61f61230f88c2c97d800b3bcffec
SHA512

026f3cb65360d9bb9a4dfa79344480eea9b6ed8ebcd2c118ebbfe46f54afac48b7cec226e17cfa6a5f1471b87bfe817fa415b2fbc71e6074fb6ebfe4130cb451
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qPp:btB9g/WItCSsAGjX7r3BTPp

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000002322e-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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-04-09_27e5ce51cfb96ef6efe3531e285df54b_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4608	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 3508 wrote to memory of 4608	3508	2024-04-09_27e5ce51cfb96ef6efe3531e285df54b_cryptolocker.exe	87
PID 3508 wrote to memory of 4608	3508	2024-04-09_27e5ce51cfb96ef6efe3531e285df54b_cryptolocker.exe	87
PID 3508 wrote to memory of 4608	3508	2024-04-09_27e5ce51cfb96ef6efe3531e285df54b_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-09_27e5ce51cfb96ef6efe3531e285df54b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-09_27e5ce51cfb96ef6efe3531e285df54b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3508
- 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:4608

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
34KB

MD5
3707f20efe16c367bcc4ea67e2194377

SHA1
274974bc54cabf0a566a78e554f31dc641ad1e30

SHA256
73f6efd4f93d76dadcff6042c09481a8c912ac3219ce3bf7a1ebd8a1a3c0ae9f

SHA512
01737f417aa458168b504b4633c1ae0abc382d7d79040915298a4d213005b7195ac3bd681a8facddb2349b2ead12599f25d239a3e57229775f682dc39285351a

Download Submit
memory/3508-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3508-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/3508-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4608-20-0x0000000002020000-0x0000000002026000-memory.dmp

Filesize
24KB

Download