f52252d9a810bedf5b21415424c35e364866788bb00b5a4859a6c5026bc81a18

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
25/03/2024, 12:49

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General

Target

2024-03-25_8578ed8c5b9db8cb7b91705a4f83ea19_cryptolocker.exe
Size

35KB
MD5

8578ed8c5b9db8cb7b91705a4f83ea19
SHA1

1eac9d0125f992df20d7eaf080fac2b817f1fb10
SHA256

f52252d9a810bedf5b21415424c35e364866788bb00b5a4859a6c5026bc81a18
SHA512

2443c308da1f86796227d27a5a07d6dca88d1841e676420b3cb0f22dca9bc486f45f73df49b2fcf3c6bd025a006db800ca9276dc90883b75c693791b7db1aa15
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qPk:btB9g/WItCSsAGjX7r3BT8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9a0-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-25_8578ed8c5b9db8cb7b91705a4f83ea19_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4088	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 2176 wrote to memory of 4088	2176	2024-03-25_8578ed8c5b9db8cb7b91705a4f83ea19_cryptolocker.exe	89
PID 2176 wrote to memory of 4088	2176	2024-03-25_8578ed8c5b9db8cb7b91705a4f83ea19_cryptolocker.exe	89
PID 2176 wrote to memory of 4088	2176	2024-03-25_8578ed8c5b9db8cb7b91705a4f83ea19_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-25_8578ed8c5b9db8cb7b91705a4f83ea19_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-25_8578ed8c5b9db8cb7b91705a4f83ea19_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2176
- 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:4088

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
12b57f2edf34ad3df1e84273c58ec321

SHA1
9122d4c381e5aa7d945be41207650e6d6d67873c

SHA256
9e3831503e5f4cb3fb4d3a16284f697bbd7e209efb2b39836bf202ca41ffbac1

SHA512
d2f37c29ffb5cf3d1ac71074590704e304856738728c997cdcc7413667eb87b6fa8225cc31d0842c59c4e63c7a5dbabd43f15edb25bd41463555c4a2121c81e1

Download Submit
memory/2176-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2176-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/2176-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4088-21-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download