96f32c3069af25d5183ef7f4d50c154f94bb2fb4ffbc3f155cd4f92a042217a3

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240419-en
resource tags

arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system
submitted
28/04/2024, 04:44

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General

Target

2024-04-28_91a0811ee0fc3e402d14ff185739305d_cryptolocker.exe
Size

40KB
MD5

91a0811ee0fc3e402d14ff185739305d
SHA1

d835d2d94ad8afc38b2efab6738b72814c5ce36b
SHA256

96f32c3069af25d5183ef7f4d50c154f94bb2fb4ffbc3f155cd4f92a042217a3
SHA512

281841dc34705778a255310de20a9c9da5510658e556f175268c1183e71994b42bb12206d94251100d7014d63e475cbcc9d4c0e436f614abc17cebc4a541b232
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunKzH15U/Etx:btB9g/WItCSsAGjX7e9N0hunKLYUx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000b000000023b92-12.dat	CryptoLocker_rule2

Checks computer location settings 2 TTPs 1 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-1-5-21-17203666-93769886-2545153620-1000\Control Panel\International\Geo\Nation	2024-04-28_91a0811ee0fc3e402d14ff185739305d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4928	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 3752 wrote to memory of 4928	3752	2024-04-28_91a0811ee0fc3e402d14ff185739305d_cryptolocker.exe	83
PID 3752 wrote to memory of 4928	3752	2024-04-28_91a0811ee0fc3e402d14ff185739305d_cryptolocker.exe	83
PID 3752 wrote to memory of 4928	3752	2024-04-28_91a0811ee0fc3e402d14ff185739305d_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-04-28_91a0811ee0fc3e402d14ff185739305d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_91a0811ee0fc3e402d14ff185739305d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3752
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  PID:4928

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
40KB

MD5
61d76ca0adcdc4c88970fa6d4d525f11

SHA1
bdecf654b0bad41de4760a518cccfe52f1af2912

SHA256
9ff73ffeed17623464df9bbc5790f44ce535267ad05835d591772ebca3f8c8c1

SHA512
144a2297064e65b314f50150eec5ee361eb2307c4ecc72bc61f4f915542069e438088a7ee8fab2a1e71b5239c452133d3b9674b60b8e0dc2da90540a5362fa57

Download Submit
memory/3752-0-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download
memory/3752-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3752-8-0x00000000020B0000-0x00000000020B6000-memory.dmp

Filesize
24KB

Download
memory/4928-25-0x0000000002150000-0x0000000002156000-memory.dmp

Filesize
24KB

Download