6381b428dde45f874dd3699882a3b6dbf6a1f7fc8a1acd0206a89631d6084741

Analysis

max time kernel
150s
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
14-03-2024 06:45

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General

Target

2024-03-14_1c5497bb1aa23fc78002c58a80841557_cryptolocker.exe
Size

44KB
MD5

1c5497bb1aa23fc78002c58a80841557
SHA1

e257e006e0030eb3485c422059b3bb6560129829
SHA256

6381b428dde45f874dd3699882a3b6dbf6a1f7fc8a1acd0206a89631d6084741
SHA512

f64a19394f813ce8594d44c82c1bbeb3d36285664624f0729e107c08e291fb6a05bcba0611cd811423c67c523317d8868d8b287cf2ab0089e46b119e29fbf408
SSDEEP

768:btB9g/WItCSsAGjX7r3BPOMHocM4vUUOmJ+96egDc:btB9g/xtCSKfxLIcMzUw96nc

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	2024-03-14_1c5497bb1aa23fc78002c58a80841557_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
2432	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 1548 wrote to memory of 2432	1548	2024-03-14_1c5497bb1aa23fc78002c58a80841557_cryptolocker.exe	90
PID 1548 wrote to memory of 2432	1548	2024-03-14_1c5497bb1aa23fc78002c58a80841557_cryptolocker.exe	90
PID 1548 wrote to memory of 2432	1548	2024-03-14_1c5497bb1aa23fc78002c58a80841557_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-03-14_1c5497bb1aa23fc78002c58a80841557_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_1c5497bb1aa23fc78002c58a80841557_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1548
- 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:2432

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
44KB

MD5
58671f25de4c50eb2188ccd39a862a99

SHA1
94dabbc3ff71966970a21dd24fcf1a8436543c10

SHA256
9db878762874ee84411ac5cd3bbabaa141835bd976738d64b5ed5c2c3e939788

SHA512
0a17b538b8f1916a497801b2df48958c42b679db6d95bf64e3871e823a30be8debf47a254dcb666c9b0185d828f29cf2594dceb4cffb0010879d1c66655610ac

Download Submit
memory/1548-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/1548-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/1548-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2432-21-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download