d1d4fc61f21f90fabf23f76237e266c29a39cd552dbfd2ede57c79b0818a8590

Analysis

max time kernel
150s
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
08/03/2024, 05:50

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General

Target

2024-03-08_63ed80a27dd6c4ebc70718043e290bd8_cryptolocker.exe
Size

39KB
MD5

63ed80a27dd6c4ebc70718043e290bd8
SHA1

33ec14afe02558ceae9822570c9a8bcc5e5667dc
SHA256

d1d4fc61f21f90fabf23f76237e266c29a39cd552dbfd2ede57c79b0818a8590
SHA512

8c8252d9a2e35560006be36f3321fbc8e044af811bae45dac98527bd3fd3bfed70d26ea8cc799cb18f6d30c204e1f462d5b56125c11c9210fa563fdf848a98a1
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunrkwI+YQ7bX:btB9g/WItCSsAGjX7e9N0hunrkk3

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001ebc7-12.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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-03-08_63ed80a27dd6c4ebc70718043e290bd8_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
5104	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 5040 wrote to memory of 5104	5040	2024-03-08_63ed80a27dd6c4ebc70718043e290bd8_cryptolocker.exe	89
PID 5040 wrote to memory of 5104	5040	2024-03-08_63ed80a27dd6c4ebc70718043e290bd8_cryptolocker.exe	89
PID 5040 wrote to memory of 5104	5040	2024-03-08_63ed80a27dd6c4ebc70718043e290bd8_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-08_63ed80a27dd6c4ebc70718043e290bd8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_63ed80a27dd6c4ebc70718043e290bd8_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5040
- 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:5104

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

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Downloads

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

Filesize
39KB

MD5
e555558024d392487ca059f8d55d4477

SHA1
17bdf79477aac438d5deb3539efeed1704c211eb

SHA256
50df339727b103196956893ede769bff16ca4879810c578cfb28604b0cb172c6

SHA512
042a4bd764978c1cd7c0daf976023fac08fae9db6df794e2d9861700103769e5f8aaf15d5d2fcadb7f078e3ca0105c5cb9d56207554c9b554849343eff7e32a4

Download Submit
memory/5040-0-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/5040-1-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/5040-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5104-20-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download