636f0198735446ab2e6e522f29c87c03f91d08fcece3b7df6f44dbb8ed7522b7

Analysis

max time kernel
137s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
20/02/2024, 14:52

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General

Target

2024-02-20_a0b0149fb8c352722ca3732e499123e9_cryptolocker.exe
Size

58KB
MD5

a0b0149fb8c352722ca3732e499123e9
SHA1

094d891b90b7e37dd8643f1bd4706003a6ed8042
SHA256

636f0198735446ab2e6e522f29c87c03f91d08fcece3b7df6f44dbb8ed7522b7
SHA512

122f770bd669b48e7c9220cde75d0e5552995d47b490125b7b714c92f2cb05b1e93bbaa567a9d5653ff56515d275f3f1f153567f0479edb01fc29c3993896e7a
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHD:btng54SMLr+/AO/kIhfoKMHdu

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023127-12.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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-20_a0b0149fb8c352722ca3732e499123e9_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4184	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 792 wrote to memory of 4184	792	2024-02-20_a0b0149fb8c352722ca3732e499123e9_cryptolocker.exe	83
PID 792 wrote to memory of 4184	792	2024-02-20_a0b0149fb8c352722ca3732e499123e9_cryptolocker.exe	83
PID 792 wrote to memory of 4184	792	2024-02-20_a0b0149fb8c352722ca3732e499123e9_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-20_a0b0149fb8c352722ca3732e499123e9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_a0b0149fb8c352722ca3732e499123e9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:792
- 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:4184

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
58KB

MD5
5d54346356f4e6542cc8f4ccb19eb061

SHA1
7a8c19f9b4021faae15956cab6e088aae11256b4

SHA256
e2d62ba3570f35bc74bf55c6ad5e45ee5c5b32281b632057c527b07ccc5a400b

SHA512
29bf42ea48d97f9da56cf89e534ce69585069b9b51fd1f7190f41803dc1fdf71aa4c798f7a27d9dbde9b0e17b75bc0b4960325679269c3dfdd4d4f1929056546

Download Submit
memory/792-0-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/792-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/792-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4184-21-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download