906bcf226f132a7c1692f2abfa57a1c30faca7a840169f0cc57b168e6f8af8f8

Analysis

max time kernel
126s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
26-01-2024 21:24

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General

Target

2024-01-26_7032c9e6d9c898b169750c425f5ef426_cryptolocker.exe
Size

59KB
MD5

7032c9e6d9c898b169750c425f5ef426
SHA1

4fdbc509b8e6607f46c050f5930640b0be34da63
SHA256

906bcf226f132a7c1692f2abfa57a1c30faca7a840169f0cc57b168e6f8af8f8
SHA512

a24f18b62bd968260b0215363e43c63e089364c920c73f073d0d11685d13b65b08f51727a9c8a1df8e88e181ebcedd3121b47fd6cb79106b6aacd4029b747d5c
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHxe:btng54SMLr+/AO/kIhfoKMHd1

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002320b-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-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	2024-01-26_7032c9e6d9c898b169750c425f5ef426_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1232405761-1209240240-3206092754-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
4048	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 5004 wrote to memory of 4048	5004	2024-01-26_7032c9e6d9c898b169750c425f5ef426_cryptolocker.exe	89
PID 5004 wrote to memory of 4048	5004	2024-01-26_7032c9e6d9c898b169750c425f5ef426_cryptolocker.exe	89
PID 5004 wrote to memory of 4048	5004	2024-01-26_7032c9e6d9c898b169750c425f5ef426_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-01-26_7032c9e6d9c898b169750c425f5ef426_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_7032c9e6d9c898b169750c425f5ef426_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5004
- 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:4048

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\gewos.exe

Filesize
59KB

MD5
c64465cfd137aa9910af0eeb9df1fa50

SHA1
da6a18a4ad3e4b5a6f8c990271fb1b6cb7da366d

SHA256
d2e5c530d8eb43deb227d22e8fe68f58755b44b1d19034c6ff307c6fcf6177a3

SHA512
a6b08da44b34a698cbca578ba83eea427dc1137dbb8c456667ae3b75dfac51464d849d7aacb59a835c5fce8540fac66a86315955a0b7b3c111d47bc1451e27fb

Download Submit
memory/4048-21-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/5004-0-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/5004-1-0x0000000002120000-0x0000000002126000-memory.dmp

Filesize
24KB

Download
memory/5004-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download