e4dbd88797078c022f7f3c7034cc6a9cfbfeb0cc9f57c80984fffe0ec50808a9

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
19/03/2024, 19:53

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General

Target

2024-03-19_b0d45047ec2b5a1e8e1f48039f700093_cryptolocker.exe
Size

36KB
MD5

b0d45047ec2b5a1e8e1f48039f700093
SHA1

bd62629839c26b86623a807dba170a9bab61c795
SHA256

e4dbd88797078c022f7f3c7034cc6a9cfbfeb0cc9f57c80984fffe0ec50808a9
SHA512

170d896fb6da871431fe8a421c307fe8ddc9b161641b3a817d56d94be1b39321b14e0a6f0d06b73eed51fe19465a8ae4780c9709dd65aa5d85035aa64adb9e70
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0q87Z:btB9g/WItCSsAGjX7r3BTi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-11.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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-19_b0d45047ec2b5a1e8e1f48039f700093_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
3568	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 5072 wrote to memory of 3568	5072	2024-03-19_b0d45047ec2b5a1e8e1f48039f700093_cryptolocker.exe	87
PID 5072 wrote to memory of 3568	5072	2024-03-19_b0d45047ec2b5a1e8e1f48039f700093_cryptolocker.exe	87
PID 5072 wrote to memory of 3568	5072	2024-03-19_b0d45047ec2b5a1e8e1f48039f700093_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-19_b0d45047ec2b5a1e8e1f48039f700093_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-19_b0d45047ec2b5a1e8e1f48039f700093_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5072
- 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:3568

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
102d7f342933f876261a150c0a9c5203

SHA1
e519f10934c355664fa608064b805fb5c165d8dc

SHA256
8f8a17cc08856199e9d68bd947a117d34708b277e457d9dcc144a6d4e5425933

SHA512
f09d8b571260f858994f9415fec68ba7adbe42cb40ec27e62230c85b0d8061cd278b8a5f9a4d65f70b4baf5fba6f5e652fe94226063c05d2b7531d0df5fd1285

Download Submit
memory/3568-20-0x0000000001F30000-0x0000000001F36000-memory.dmp

Filesize
24KB

Download
memory/5072-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/5072-1-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/5072-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download