4673a33f82a3dbe019a2e5980ca5c62d0c41db38ba07d67db19c1aaa09a39253

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 04:02

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General

Target

2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe
Size

62KB
MD5

f040f5df86115b058c12d728f6c537b0
SHA1

26dea2efd44151f919d29eb1cf56579ad66affac
SHA256

4673a33f82a3dbe019a2e5980ca5c62d0c41db38ba07d67db19c1aaa09a39253
SHA512

a93f32d8e219c2e6f6052febc6b420ca4bb62c9fb9109fe7c25776f40823d32a4e6164579735c916bae8e48d87392f0127dc25cdc82e0bb7852c9c17db312371
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUHa6:btng54SMLr+/AO/kIhfoKMHdQ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000f00000002313f-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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	gewos.exe

Executes dropped EXE 1 IoCs

pid	Process
2092	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 4676 wrote to memory of 2092	4676	2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe	88
PID 4676 wrote to memory of 2092	4676	2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe	88
PID 4676 wrote to memory of 2092	4676	2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_f040f5df86115b058c12d728f6c537b0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4676
- 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:2092

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
62KB

MD5
ab1267686e4a414ed015d9d5f7dd63da

SHA1
fd88f5f01827a11312a92c82d801dba37b4ce47a

SHA256
821d0997a1af74e401b308f7135dabef9988094fb79aafd8baac1122dc0a75e4

SHA512
a1681e9ac3d6d2308ea7a33f0e0f7ad4a2388c3c51c4ca45c509b95e8e7a8f0424a0f332ddb6be4305235089d82c661c0eaf407452786122f1dbf097dc77e156

Download Submit
memory/2092-21-0x0000000002010000-0x0000000002016000-memory.dmp

Filesize
24KB

Download
memory/4676-0-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4676-1-0x0000000002260000-0x0000000002266000-memory.dmp

Filesize
24KB

Download
memory/4676-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download