c7f19c3065147385854e982529248a54acac3f21441a169e0def98d1bcdde721

Analysis

max time kernel
143s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
22-04-2024 01:49

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General

Target

2024-04-22_9cfc90535c988f75fd011dfb4fecaebd_cryptolocker.exe
Size

35KB
MD5

9cfc90535c988f75fd011dfb4fecaebd
SHA1

2a7b7ff32d1d4a32f038e85ebecf8cc4c3e84db0
SHA256

c7f19c3065147385854e982529248a54acac3f21441a169e0def98d1bcdde721
SHA512

ee9c644476eed974a0c9314bfa2cbdd5cd195bf8d2f16185b45ca588d2a6ba4e0863dfebfedec206e5de1af94f71ddc0c85ba6f91b330b0c511a4d5423c08e56
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4l8tFFxE2B0qU:btB9g/WItCSsAGjX7r3BTU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x001c00000001e97e-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	2024-04-22_9cfc90535c988f75fd011dfb4fecaebd_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
5004	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 592 wrote to memory of 5004	592	2024-04-22_9cfc90535c988f75fd011dfb4fecaebd_cryptolocker.exe	87
PID 592 wrote to memory of 5004	592	2024-04-22_9cfc90535c988f75fd011dfb4fecaebd_cryptolocker.exe	87
PID 592 wrote to memory of 5004	592	2024-04-22_9cfc90535c988f75fd011dfb4fecaebd_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-04-22_9cfc90535c988f75fd011dfb4fecaebd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-22_9cfc90535c988f75fd011dfb4fecaebd_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:592
- 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:5004

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
f1c5afba91bfc2b3a595ba086830505e

SHA1
2cfbc21fbde4f358c638d8858f7faf10d8bc0981

SHA256
e8e3ca4b8c211aab3524a1630deaaf09f7387baa1fc45034bdfc61a2e370dcac

SHA512
538c92fb46ab398b4e130a70a23e1e6499e458b183f6374a0841e261da1a38863cc469fa2fac5d19de826cc9a538715ecb8b9c195fce53e08d7513757766ad12

Download Submit
memory/592-0-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/592-1-0x0000000002E90000-0x0000000002E96000-memory.dmp

Filesize
24KB

Download
memory/592-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5004-20-0x0000000002D50000-0x0000000002D56000-memory.dmp

Filesize
24KB

Download